BSC6910 Configuration Principle(Global)(V100R015C00_07)(PDF)-En

SRAN8.0&GBSS15.0&RAN15.0 BSC6910

Configuration Principle (Global) Issue

07

Date

2014-09-12

HUAWEI TECHNOLOGIES CO., LTD.

Copyright © Huawei Technologies Co., Ltd. 2014. All rights reserved. No part of this document may be reproduced or transmitted in any form or by any means without prior written consent of Huawei Technologies Co., Ltd.

Trademarks and Permissions and other Huawei trademarks are trademarks of Huawei Technologies Co., Ltd. All other trademarks and trade names mentioned in this document are the property of their respective holders.

Notice The purchased products, services and features are stipulated by the contract made between Huawei and the customer. All or part of the products, services and features described in this document may not be within the purchase scope or the usage scope. Unless otherwise specified in the contract, all statements, information, and recommendations in this document are provided "AS IS" without warranties, guarantees or representations of any kind, either express or implied. The information in this document is subject to change without notice. Every effort has been made in the preparation of this document to ensure accuracy of the contents, but all statements, information, and recommendations in this document do not constitute a warranty of any kind, express or implied.

Huawei Technologies Co., Ltd. Address:

Huawei Industrial Base Bantian, Longgang Shenzhen 518129 People's Republic of China

Website:

http://www.huawei.com

Email:

[email protected]

Issue 07 (2014-09-12)

Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd.

i

SRAN8.0&GBSS15.0&RAN15.0 BSC6910 Configuration Principle (Global)

Contents

Contents 1 Change History..............................................................................................................................1 2 Introduction....................................................................................................................................7 2.1 Overview........................................................................................................................................................................7 2.2 Version Difference.........................................................................................................................................................7

3 Application Overview................................................................................................................10 4 Product Configurations..............................................................................................................13 4.1 BSC6910 UMTS Configurations..................................................................................................................................14 4.1.1 Cabinet Configurations..............................................................................................................................................14 4.1.2 Subrack Configurations.............................................................................................................................................15 4.1.3 Impact of the Traffic Model on Configurations........................................................................................................18 4.1.4 Hardware Capacity License Configurations..............................................................................................................20 4.1.5 Service Processing Modules......................................................................................................................................22 4.1.6 Interface Boards.........................................................................................................................................................27 4.1.7 Configuration Principles of Interface Boards and Service Boards............................................................................34 4.1.8 Board Redundancy Types..........................................................................................................................................34 4.1.9 Auxiliary Material Configurations............................................................................................................................36 4.1.10 Description of Restrictions on Inter-Subrack Switching.........................................................................................37 4.2 BSC6910 GSM Configurations....................................................................................................................................37 4.2.1 Cabinet Configurations..............................................................................................................................................37 4.2.2 Subrack Configurations.............................................................................................................................................38 4.2.3 Hardware Capacity License Configurations and Product Specifications..................................................................42 4.2.4 Service Boards...........................................................................................................................................................43 4.2.5 Interface Boards.........................................................................................................................................................47 4.2.6 General Principles for Slot Configurations...............................................................................................................50 4.2.7 Auxiliary Material Configurations............................................................................................................................51 4.3 BSC6910 GU Product Configurations.........................................................................................................................52 4.4 Examples of Typical Configurations............................................................................................................................52 4.4.1 BSC6910 UMTS Examples of Typical Configurations............................................................................................52 4.4.2 BSC6910 GSM Examples of Typical Configurations...............................................................................................59

5 Expansion and Upgrade Configurations.................................................................................63 5.1 BSC6910 UMTS Expansion and Upgrade Configurations..........................................................................................63 Issue 07 (2014-09-12)


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Contents

5.1.1 Hardware Expansion and Upgrade Configurations...................................................................................................63 5.1.2 Examples of Hardware Expansion............................................................................................................................64 5.2 BSC6910 GSM Expansion and Upgrade Configurations.............................................................................................65 5.2.1 Precautions.................................................................................................................................................................65 5.2.2 Hardware Capacity License Expansion.....................................................................................................................70 5.2.3 Examples of Hardware Expansion............................................................................................................................71

6 Appendix.......................................................................................................................................73 6.1 Traffic Model................................................................................................................................................................73 6.1.1 UMTS Traffic Model.................................................................................................................................................73 6.1.2 GSM Traffic Model...................................................................................................................................................76 6.2 Hardware Specifications...............................................................................................................................................77 6.2.1 UMTS Hardware Specifications................................................................................................................................77 6.2.2 GSM Hardware Specifications..................................................................................................................................84

7 Acronyms and Abbreviations...................................................................................................86

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1 Change History

1

Change History

This chapter provides information about the changes in different versions of SRAN9.0&GBSS15.0&RAN15.0 BSC6910 Configuration Principle (Global). 07 (2014-09-12) This is the seventh commercial release of V100R015C00. Compared with Issue 06 (2014-06-09) of V100R015C00, this issue does not include any new topics. Compared with Issue 06 (2014-06-09) of V100R015C00, this issue incorporates the following changes. Content

Change Description

4.1.6 Interface Boards

l Changed the uplink or downlink throughput of EXOUa IUPS from 10 Gbit/s to 9.5 Gbit/s. l Changed the uplink or downlink throughput of EXOUa IUB from 10 Gbit/s to 8 Gbit/s.


Added restrictions imposed on the calculation of backplane bandwidth for POUc boards.

4.1.2 Subrack Configurations

Added the description that only one ESAUa board is delivered by default for GU or UMTS.

4.1.5 Service Processing Modules 5.2.1 Precautions

Modified the formula for calculating the number of EGPUa boards.

Compared with Issue 06 (2014-06-09) of V100R015C00, this issue does not exclude any topics. 06 (2014-06-09) This is the sixth commercial release of V100R015C00. Issue 07 (2014-09-12)


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1 Change History

Compared with Issue 05 (2014-04-30) of V100R015C00, this issue does not include any new topics. Compared with Issue 05 (2014-04-30) of V100R015C00, this issue incorporates the following changes. Content

Change Description

5.2.1 Precautions

Modified the method of calculating the number EGPUa boards.

Compared with Issue 05 (2014-04-30) of V100R015C00, this issue does not exclude any topics. 05 (2014-04-30) This is the fifth commercial release of V100R015C00. Compared with Issue 04 (2014-03-28) of V100R015C00, this issue does not include any new topics. Compared with Issue 04 (2014-03-28) of V100R015C00, this issue incorporates the following changes. Content

Change Description


Modified the method of estimating the number of EXOUa boards.

4.4.1 BSC6910 UMTS Examples of Typical Configurations

Compared with Issue 04 (2014-03-28) of V100R015C00, this issue does not exclude any topics. 04 (2014-03-28) This is the fourth commercial release of V100R015C00. Compared with Issue 03 (2014-01-20) of V100R015C00, this issue does not include any new topics. Compared with Issue 03 (2014-01-20) of V100R015C00, this issue incorporates the following changes. Content

Change Description

4.1.1 Cabinet Configurations

Changed "fan assembly" to "fan box" and modified power consumption of fan boxes.

4.1.3 Impact of the Traffic Model on Configurations

Modified some descriptions.

4.4.1 BSC6910 UMTS Examples of Typical Configurations Issue 07 (2014-09-12)


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1 Change History

Content

Change Description


Modified the method of estimating the number of EGPUa UP boards.

4.1.5 Service Processing Modules 4.1.3 Impact of the Traffic Model on Configurations

Modified the method of estimating the number of EXOUa boards.

4.1.6 Interface Boards 4.1.5 Service Processing Modules 6.2.1 UMTS Hardware Specifications

l Added the description that EGPUa CP and UP specifications are designed for EGPUa CP only boards and EGPUa UP only boards, respectively. l Added the method of calculating the specifications of EGPUa CP&UP boards.

6.1.1 UMTS Traffic Model

l Updated the definition of the smartphone model. l Changed the parameter value types to integers for all models. l Added "PS channel switch times". l Updated the RNC capacity for the smartphone model.

Compared with Issue 03 (2014-01-20) of V100R015C00, this issue does not exclude any topics. 03 (2014-01-20) This is the third commercial release of V100R015C00. Compared with Issue 02 (2013-06-16) of V100R015C00, this issue does not include any new topics. Compared with Issue 02 (2013-06-16) of V100R015C00, this issue incorporates the following changes.

Issue 07 (2014-09-12)

Content

Change Description

3 Application Overview

Extended the maximum number of NodeBs or cells per cabinet to 10000/20000 for UMTS.


Changed the default number of ESAUa boards to be configured from 1 to 0 (4 slots are reserved for ESAU.)


3


1 Change History

Content

Change Description


l Added descriptions about how to calculate connection capabilities of IUPS interface boards for UMTS. l Added Iur interface board specifications for UMTS. Corrected the reference error.

4.1.5 Service Processing Modules

Corrected the formula for calculating N_ EGPUa_Iub_License.


Modified the method of calculating the number of active users carried on EGPUa CP, EGPUa UP, and interface boards.

4.1.6 Interface Boards 6.1.1 UMTS Traffic Model

l Modified the smartphone traffic model and the capacity under this traffic model. l Added the RRC capacity under each traffic mode.

Compared with Issue 02 (2013-06-16) of V100R015C00, this issue does not exclude any topics. 02 (2013-06-16) This is the second commercial release of V100R015C00. Compared with Issue 01 (2013-02-20) of V100R015C00, this issue includes the following new topics: l

Configuration principles for POUc in Abis IP over E1/T1 for GSM

l

Configuration principles for GSM when the Abis, A, and Gb interfaces use the same board

l

Calculation of the numbers of Iur interface boards and their ports for UMTS when Iur interface boards use different ports.

Compared with issue 01 (2013-02-20) of V100R015C00, this issue incorporates the following changes.

Issue 07 (2014-09-12)

Content

Change Description


Added the description that the UMTS BHCA capacity is based on smartphone traffic model and the UMTS PS throughput capacity is based on high-PS traffic model.


Added pps specifications for interface boards and the relationship between pps specifications and bps specifications.


Added the description that the coefficient is applicable only to IP interface boards.


4


1 Change History

Content

Change Description

6.1.1 UMTS Traffic Model

Add the number of active users for UMTS under typical traffic model.


Updated the configuration principles for SAU boards for UMTS and GSM.

4.2.2 Subrack Configurations 4.1.6 Interface Boards 6.2.1 UMTS Hardware Specifications

Added the numbers of Iur interface boards and their ports for UMTS when Iur interface boards use different ports.

4.2.4 Service Boards

Updated the configuration principles for GMCP boards for GSM.


l Added the configuration principles for POUc boards for GSM in Abis IP over E1/T1 mode. l Added the configuration principles applied when the Abis, A, and Gb interface uses the same interface board.


Remove the coefficient used for calculating the bps capabilities of GOUc/FG2c boards for GSM, so that the calculation is in the same manner as that for the BSC6900.


Added the description that a maximum of two ESAUa boards are configured for UMTS and accordingly updated the principles for arranging slots in the MPS and the method of calculating the number of EPSs.

4.2.6 General Principles for Slot Configurations

Added the description that two slots are reserved for ESAUa boards for GSM.

Compared with Issue 01 (2013-02-20) of V100R015C00, this issue excludes the following topics. l

Coefficient used for calculating GOUc/FG2c boards

l

NASP boards for UMTS and GU

01 (2013-02-20) This is the first commercial release of V100R015C00. Compared with Draft A (2012-06-26) of V100R015C00, this issue includes the following new topics: l

EXPUa boards

l

ENIUa hardware license

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1 Change History

l

Descriptions about license usage for the BSC6910: In the event of network swapping, the BSC6900 license is invalid for the BSC6910 and must be quoted again, while the existing BTS licenses are still valid and can be reused by the BSC6910.

l

Recommendation that an independent Iur-P interface board be configured in the basic subrack.

l

Principles for configuring RNC in Pool.

Compared with Draft A (2012-06-26) of V100R015C00, this issue incorporates the following changes. Content

Change Description


Detailed the configuration principles for EGPUa and EXPUa boards.

4.1.1 Cabinet Configurations

Updated the formula for calculating cabinet power consumption.

4.1 BSC6910 UMTS Configurations

Updated the coefficients used for calculating UMTS EGPUa boards and interface boards at different data rates.


Changed the formula N_EGPUa_UP = MAX(a' b', c', n') to N_EGPUa_UP = MAX(a'+b', c', n').

Compared with Draft A (2013-02-16), this issue excludes the following topics: l

GCUb, GCGb, and TNUb boards

l

Limitation that POUc boards can be configured only in 10 GE slots

Draft A (2012-06-26) This is a draft for V100R015C00.

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2 Introduction

2

Introduction

2.1 Overview This document describes product specifications, configuration principles, upgrade, and capacity expansion for BSC6910 V100R015C00. To meet requirements in different scenarios, the BSC6910 can work in the following modes: l

BSC6910 GSM: The BSC6910 works in GSM Only (GO) mode and functions as the base station controller (BSC).

l

BSC6910 UMTS: The BSC6910 works in UMTS Only (UO) mode and functions as the radio network controller (RNC).

l

BSC6910 GU: The BSC6910 works in GSM&UMTS (GU) mode and functions as both the BSC and RNC.

2.2 Version Difference The hardware configuration for the BSC6910 UMTS is as follows: l

Minimum: one cabinet with a main processing subrack (MPS)

l

Maximum: two cabinets with an MPS and five extended processing subracks (EPSs)

The hardware configuration for the BSC6910 GSM is as follows: l

Minimum: one cabinet with a main processing subrack (MPS)

l

Maximum: one cabinet with an MPS and two extended processing subracks (EPSs)

The mobile broadband network is experiencing an exponential growth of traffic volume, with urgent requirement of intense coordination among different services and pacing evolution toward cloud computing system for wireless network equipment (NE). To meet this challenge, Huawei launches its new network controller product, the BSC6910. It uses a hardware structure based on HW6910 R15 and a new BSC6900-based software structure. In the UMTS network, an RNC pool can be configured by using BSC6910s alone or BSC6910s and BSC6900s if the RNC In Pool feature is activated. RNCs within an RNC pool work in node redundancy and resource sharing modes. Issue 07 (2014-09-12)


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2 Introduction

Table 2-1 HW6910 R15 hardware Part Number

Name

Description

Function Description

Application Scenario

QM1D00 EGPU00

EGPUa

Evolved General Processing Unit

l Manages user plane and signaling plane resource pools.

GSM & UMTS

l Processes BSC and RNC signaling plane and user plane services. QM1D00 EXPU00

EXPUa

Evolved Extensible Processing Unit

l Manages BSC user plane and signaling plane resource pools.

GSM

l Processes BSC and RNC signaling plane and user plane services. QM1D00 EOMU00

EOMUa

Evolved Operation and Maintenance Unit

Performs configuration management, performance management, fault management, security management, and loading management.

GSM & UMTS

QM1D00 ESAU00

ESAUa

Evolved Service Aware Unit

Collects data about the call history record (CHR) and preprocesses the collected data.

GSM & UMTS

QM1D00 EXOU00

EXOUa

Evolved 10GE Optical interface Unit

l Provides two channels over 10 Gbit/s optical ports.

GSM & UMTS

l Supports IP over GE. l Used for Iu/Iub/Iur

Issue 07 (2014-09-12)

QM1D00 ENIU00

ENIUa

Evolved Network Intelligence Unit

Provides intelligent service identification.

GSM & UMTS

WP1D000 SCU01

SCUb

GE Switching network and Control Unit

Provides MAC/GE switching and enables the convergence of ATM and IP networks.

GSM & UMTS

WP1D000 FG201

FG2c

IP Interface Unit (12 FE/4 GE, Electric)

IP: A/Abis/Lb/Gb/Iur-g

GSM & UMTS

WP1D000 GOU01

GOUc

IP Interface Unit (4 GE, Optical)


IP: Iu/Iub/Iur/Iur-g

IP: Iu/Iub/Iur/Iur-g


GSM & UMTS

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2 Introduction

Part Number

Name

Description


Application Scenario

WP1D000 AOU01

AOUc

ATM Interface Unit (4 STM-1, Channelized)

ATM: Iub

UMTS

WP1D000 UOI01

UOIc

ATM Interface Unit (8 STM-1, Unchannelized)

ATM: Iu/Iub/Iur

UMTS

WP1D000 POU01

POUc

TDM or IP Interface Unit (4 STM-1, Channelized)

TDM: Abis

GSM

WP1D000 GCU01

GCUa

General Clock Unit

Obtains the system clock source, performs the functions of phase-lock and holdover, and provides clock signals.

GSM & UMTS

QW1D000 GCG01

GCGa

GPS&Clock Processing Unit

l Obtains the system clock source, performs the functions of phase-lock and holdover, and provides clock signals.

GSM & UMTS

IP over STM-1: Abis

l Unlike the GCUa board, the GCGa board can receive and process GPS signals. QM1B0P BCDP00

N/A

Assembly Cabinet

N/A

GSM & UMTS

QM1K00P BCS00

N/A

Backplane Subrack, PARCb

N/A

GSM & UMTS

NOTICE The BSC6900 cannot be upgraded to the BSC6910 by upgrading the software.

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3

Application Overview

The hardware platform of the BSC6910 is characterized by high integration, high performance, and modular structure. These characteristics enable the BSC6910 to meet networking requirements in different scenarios and provide operators with a high-quality network at a low cost. Figure 3-1 shows the exterior of a BSC6910 cabinet (N68E-22). Figure 3-1 Exterior of a BSC6910 cabinet (N68E-22)

Figure 3-2 shows the front view and rear view of a BSC6910 cabinet.

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Figure 3-2 Front view and rear view of a BSC6910 cabinet

Table1 describes technical specifications of the BSC6910. Table 3-1 Technical specifications of the BSC6910 Performance Specifications

BSC6910 UMTS

When two cabinets are configured, the specifications are as follows: 10,000 NodeBs, 20,000 cells, 64,000,000 BHCA, 120 Gbit/s PS throughput or 250,000 CS traffic (Erl) When one cabinet is configured, the specifications are as follows: 10000 NodeB, 20,000 cells, 32,000,000 BHCA, 60 Gbit/s PS throughput or 125,000 CS traffic (Erl)

BSC6910 GSM

Issue 07 (2014-09-12)

Per cabinet: 8000 BTSs, 8000 cells, 24,000 TRXs, 150,000 traffic (Erl), 96,000 PDCHs, 150,000 Erl, 52,000,000 integrated BHCA, 8 Gbit/s PS throughput


11


BSC6910 GU


When two cabinets are configured, the specifications for a BSC6910 working in different modes are as follows: l UMTS (5 subracks: 1 MPS and 4 EPSs): 10000 NodeBs, 20000 cells, 53,300,000 BHCA, 99.8 Gbit/s PS throughput or 208,000 CS traffic (Erl) l GSM (3 subracks that can be configured across cabinets: 2 EPSs): 8000 BTSs, 8000 cells, 24,000 TRXs, 150,000 Erl, 96,000 PDCHs, 5,200,000 integrated BHCA, 8 Gbit/s PS throughput When one cabinet is configured, the specifications for a BSC6910 working in different modes are as follows: l UMTS (2 subracks: 1 MPS and 1 EPS): 3330 NodeBs, 6660 cells, 21,300,000 BHCA, 39.3 Gbit/ s PS throughput or 82,000 CS traffic (Erl) l GSM (1 EPS): 8000 BTSs, 8000 cells, 8000 TRXs, 50000 Erl, 32000 PDCHs, 17300000 integrated BHCA, 3 Gbit/s PS throughput

N68E-22 dimensions (H x W x D): 2200 mm x 600 mm x 800 mm (86.61 in. x 23.62 in. x 31.50 in.)

Size and Weight

Cabinet weight ≤ 350 kg Equipment room floor load-bearing capacity ≥ 450 kg/m2 Power Supply

–48 V DC input Input voltage: –40 V DC to –57 V DC Each subrack requires four 60 A inputs.

Power Consumption

7100 W per cabinet

NOTE

l The BSC specifications cannot be accumulated by the specifications of boards. l The BSC specifications are designed based on customers' requirements and the product plan. During product specification design, business factors and technical factors, such as system load and board quantity limitations, are taken into consideration to define an equivalent system specification. l The definition of BHCA in GSM is different from that in UMTS. The BHCA defined in UMTS is the number of call attempts and the BHCA capability varies with the traffic model. The BHCA defined in GSM is the maximum number of equivalent BHCA under Huawei traffic model. All user activities, including CS location updates, CS handovers, PS TBF setups, PS TBF releases, and PS pagings, can be converted into equivalent BHCA. This better reflects the impact of the traffic-model change on system performance. In full configuration, when the BHCA reaches the maximum, the system reaches the designed maximum processing capability if the average GCP CPU usage does not exceed 75% of the average flow control threshold. l The UMTS BHCA capacity is based on Smartphone traffic model, the UMTS PS throughput capacity IS based on High-PS traffic model, which are defined in 6.1.1 UMTS Traffic Model.

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4 Product Configurations

4

Product Configurations

The configurations of the BSC6910 can be divided as follows: l

Configurations of hardware, including the cabinets, subracks, general processing units, operation and maintenance units, network intelligent units, interface boards, and clock boards

l

Configurations of hardware capacity licenses, including licenses for "Iub Total Throughput", "Active User" and "Evolved Network Intelligence Throughput".

This chapter describes how to configure these hardware components and calculate the required licenses.

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4.1 BSC6910 UMTS Configurations This section describes how to configure hardware and calculate the number of required licenses when the BSC6910 works in the UMTS mode. The main hardware components of the BSC6910 UMTS are service processing units, interface boards, clock boards, subracks, and cabinets. The following sections describe the hardware configuration scenarios and configuration methods. The capacity of UMTS BSC6910 depends on the number and the power consumption of EGPUa boards and the hardware actual processing capacity in the traffic model. A maximum of 128 EGPUa boards can be configured on the UMTS BSC6910 with two cabinets, excluding the pair of EGPUa boards fixed for resource management. The EGPUa board can process services on the control plane (CP) and user plane (UP) at one time. In Huawei Smartphone traffic model, a maximum of 64,000,000 BHCA can be achieved on the control plane. In Huawei heavy PS traffic model, the maximum BHCA throughput reaches 120 Gbit/s on the user plane. However the control and user plane cannot reach the maximum value at one time. The maximum traffic volumes on the control and user planes are closely related to the traffic model. The following figure shows the relationship between the BHCA and the PS throughput. Figure 4-1 Relationship between capacity of control plane and use plane

4.1.1 Cabinet Configurations The following table lists the cabinet configuration. Table 4-1 Cabinet configuration

Issue 07 (2014-09-12)

Part Number

Description

Remarks

QM1B0PBCDP00

Cabinet

N/A


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Configuration principle: A BSC6910 can be configured with a maximum of two cabinets. A maximum of three subracks can be configured in each cabinet. The number of cabinets required is calculated as follows: 1.

For a new site Number of cabinets_1 = ROUNDUP [(Number of MPSs + Number of EPSs)/3] The number of MPSs is 1. Number of cabinets_2 = ROUNDUP [SUM(Power consumption of all boards + power consumption of fan assemblies)/7100] The power consumption of a single subrack on the BSC6910 is 4000 W. The maximum power consumption of a single cabinet on the BSC6910 is 7100 W. Item

Pavg (W)

Subarck (Two assemblies)

200

EXOUa/EGPUa/ENIUa/ EOMUa/ ESAUa

102

GOUc/FG2c/UOIc/ AOUc/ SCUb

80

GCGa/GCUa

20

Number of cabinets = MAX (Number of cabinets_1, Number of cabinets_2) NOTE

l Average power consumption (Pavg) is the estimated value in a typical operating environment. The maximum power consumption mentioned in hardware description is obtained when all devices on boards are full-loaded. This maximum power consumption cannot be obtained under the actual system running conditions. Therefore, Pavg is provided for power consumption calculation. l Maximum subrack power consumption is 4000 W (including the power consumption of fans) which is obtained when all slots of the subrack are configured with boards. It is recommended that power distribution be configured as 4000 W per subrack. This can save power distribution adjustment upon future capacity expansion. l Maximum cabinet power consumption is 7100 W which is the upper limit of the heat dissipation capability in the equipment room and obtained based on survey and research. Therefore, the maximum cabinet power consumption is not 12,000 W.

2.

For capacity expansion Number of cabinets = Number of cabinets required after capacity expansion – Number of cabinets configured before capacity expansion

4.1.2 Subrack Configurations The following table lists the subrack configuration.

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Table 4-2 Subrack configuration Part Number

Name

Description


QM1K00PBCS00

Subrack

Unified service architecture basic subrack

Processes basic services.

The MPS and EPS of the BSC6910 have the same physical structure; that is, they both use the PARCb subrack. The difference is that the MPS houses the EOMUa, GCUa, GCGa, and EGPUa boards (used for resource management), which are not housed in the EPS. MPS configuration principle: A BSC6910 must be equipped with one MPS only. The MPS configurations are as follows: 1.

Slot assignment: l 8–9: EGPUa (Fixed) l 10–13: EOMUa (recommended) l 14–15: GCUa or GCGa (Fixed) l 20–21: SCUb (Fixed) l Reserve a pair of slots for the EOMUa board.

2.

If the GPS clock is not required, each BSC6910 is configured with two GCUa boards, working in 1+1 redundancy mode. If the GPS clock is required, each BSC6910 is configured with two GCGa boards, working in 1+1 redundancy mode.

3.

The default number of ESAUa board is one for EBC. If the customer has purchased and used Huawei Nastar or other OSS feature such as SON, one or two ESAUa boards need to be configured in the MPS of the BSC6900. The number of ESAUa boards is up to OSS. It is recommend ESAUa boards are configured in fixed slots(0,1,2,3) in MPS.

4.

The EGPUa/ENIUa boards can be inserted in any vacant slots excepting fixed slots. An MPS can provide 14 slots for the EGPUa/ENIUa board.

5.

Interface boards can be inserted only in slots 16 to 19 and slots 22 to 27. It is not advised that EGPUa and ENIUa be inserted into these slots.

6.

AOUc, UOIc, GOUc, FG2c, and EXOUa are interface boards. The EXOUa board can be inserted only in slots 16 to 19 and slots 22 to 25. AOUc, UOIc, GOUc and FG2c board can be inserted only in slots 16 to 19 and slots 22 to 27. Among them, slots 16 to 19 and 22 to 25 are preferred. An MPS provides 8 slots for EXOUa boards and 10 slots for AOUc, UOIc, GOUc and FG2c boards.

7.

Number of interface board slots provided by the MPS: 8 slots for EXOUa boards and 10 for AOUc/UOIc/GOUc/FG2c boards.

8.

An MPS provides 14 universal slots.

9.

It is recommended that the Iur-P interface board be configured in the MPS.

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The EPS configurations are as follows: 1.

Slots 20 and 21 are reserved for the SCUb board.

2.

The EGPUa/ENIUa boards can be inserted in any vacant slots excepting fixed slots; that is, the EPS can provide 26 slots for the EGPUa/ ENIUa board.

3.

Interface boards can be inserted only in slots 14 to 19 and slots 22 to 27. It is not advised that EGPUa and ENIUa be inserted into these slots.

4.

AOUc, UOIc, GOUc, FG2c, and EXOUa are interface boards. For the EXOUa board, only slots 16 to 19 and slots 22 to 25 are available. For the AOUc, UOIc, GOUc, and FG2c board, slots 14 to 19 and slots 22 to 27 are all available. And slots 16 to 19 and slots 22 to 25 are preferred. An EPS provides 8 slots for EXOUa boards and 12 slots for AOUc, UOIc, GOUc and FG2c boards.

5.

Number of interface board slots provided by the EPS: 8 slots for EXOUa boards and 12 for AOUc/UOIc/GOUc/FG2c boards.

6.

An EPS provides 26 universal slots.

The number of required EPSs is calculated as follows: Issue 07 (2014-09-12)


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l


For a new site – Number of required EPSs_1 = ROUNDUP [(Number of required EXOUa boards – Number of EXOUa boards that can be housed in an MPS)/Number of EXOUa boards that can be housed in an EPS] If the number of required EXOUa boards is smaller than that can be housed in an MPS, the number of required EPSs is 0. The MPS provides a maximum of 14 EGPUa boards. The EPS provides a maximum of 26 EGPUa boards. – Number of required EPSs_2 = ROUNDUP [(Number of required interface boards – Number of interface boards that can be housed in an MPS)/Number of interface boards that can be housed in an EPS] If the number of required interface boards is smaller than that can be housed in an MPS, the number of required EPSs_2 is 0. The EPS provides a maximum of 8 EXOUa boards.

l

Number of required EPSs_3 = ROUNDUP [(Number of required EGPUa boards + Number of required interface boards – Number of universal slots provided by the MPS)/Number of universal slots provided by one EPS] If the number of required EGPUa boards and interface boards is smaller than the number of universal slots provided by the MPS, the number of required EPSs_3 is 0. The EPS provides a maximum of 10 interface boards. The EPS provides a maximum of 12 interface boards.

l

Number of required EPSs_4 = ROUNDUP [(Number of required EGPUa boards + Number of required interface boards + Number of required ENIUa boards - Number of universal slots provided by the MPS)/Number of universal slots provided by one EPS] If (Number of required EGPUa boards + Number of required interface boards) < Number of universal slots provided by the MPS, the Number of required EPSs_4 is 0. NOTE

Number of required EGPUa boards does not include the number of the fixed EGPUa boards in the main subrack for resource management.

The MPS provides a maximum of 18 universal slots. The EPS provides a maximum of 26 universal slots. l

Number of EPSs = MAX (Number of required EPSs_1, Number of required EPSs_2, Number of required EPSs_3)

l

For capacity expansion Number of required EPSs = Number of EPSs required after capacity expansion – Number of EPSs configured before capacity expansion

4.1.3 Impact of the Traffic Model on Configurations Technical specifications of the BSC6910 are subject to the traffic model. Specifications of the BSC6910 are subject to the traffic model. 1.

On the user plane The CPU overload threshold of the BSC6910 is 70%.

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The capabilities of the EGPUa (on the user plane) and ENIUa are calculated in the traffic model when the CPU usage reaches 70% and the PS RAB uplink/downlink rate is 64/384 kbit/s, which is the average rate of PS services and is independent from specific bearer type. In this case, the PS throughput of the EGPUa is 2000 Mbit/s. 2000Mbit/s is also the maximum design specification,. But in the real commercial networks, as the rapid growth up of smart phone penetration, user plane is characterized by numerous small packets, which leads the real throughput capacity of EGPUa cannot reach 2000Mbit/s, but decreases with the decrement of PS RAB mean data rate in active state, as shown in Figure 4-2. Figure 4-2 Relationship between Throughput Capacity of EGPUa UP only board and mean data rate

PS RAB mean data rate in active state(UL+DL) = PS throughput per subscriber in BH *3600/( PS call per sub per BH * mean hold time in Cell_DCH&Cell_FACH per PS call). Table 4-3 Some typical PS RAB mean data rates in active state and corresponding PS Throughput supported by EGPUa UP only board Mean data rate (UL/DL kbps)

8/8

8/32

32/32

64/64

64/128

64/384

Throughput Capacity of EGPUa UP board(Mbps)

222

610

800

1250

1540

2000

If PS RAB Mean data rate in active state (UL+DL)(kbps) ranges [0, 16], PS Throughput Capacity per EGPUa UP(Mbps) = PS RAB Mean data rate * 13.75. If PS RAB Mean data rate in active state (UL+DL)(kbps) ranges [16, 40], PS Throughput Capacity per EGPUa UP (Mbps) = 220+(PS RAB Mean data rate –16)* 16.67. If PS RAB Mean data rate in active state (UL+DL)(kbps) ranges [40, 64], PS Throughput Capacity per EGPUa UP (Mbps) =620 + (PS RAB Mean data rate – 40) * 5.83. If PS RAB Mean data rate in active state (UL+DL)(kbps) ranges [64, 128], PS Throughput Capacity per EGPUa UP (Mbps) = 760 + (PS RAB Mean data rate – 64) * 5.63. If PS RAB Mean data rate in active state (UL+DL)(kbps) ranges [128, 196], PS Throughput Capacity per EGPUa UP (Mbps) = 1120 + (PS RAB Mean data rate – 128) * 5.88. Issue 07 (2014-09-12)


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If PS RAB Mean data rate in active state (UL+DL)(kbps) ranges [196, 448], PS Throughput Capacity per EGPUa UP (Mbps) = 1520 + (PS RAB Mean data rate – 128) * 1. If PS RAB Mean data rate in active state (UL+DL)(kbps) ranges [448, ∞], PS Throughput Capacity per EGPUa UP (Mbps) = 2000. 2.

Transmission and forwarding capacity of interface boards For EXOUa, Data forwarding capacity (unit: bit/s) is measured by the throughput. The throughput depends on the average packet length and packet forwarding capacity (unit: packet per second, pps) in the following formula: Throughput (bit/s) = Average packet length x Packet forwarding capacity (pps) The board packet forwarding capacity is fixed as follows: EXPUa: 8400000 pps Generally, the throughput decreases with the decrement of packet length. However the packet length is uncertain when you plan pre-sale configurations. We provide some typical capacity in real commercial networks as follows for reference: The typical transmission packet length of Iub interface is 150Bytes. The typical transmission packet length of Iu-PS interface is 750Bytes. EXOUa Iub interface board throughput (Gbps)= Min(The typical transmission packet length of Iub interface * pps * transmission efficiency, 10) = Min (150*8*8400000*0.8/1000000000, 10) = 8 (Gbps) EXOUa IuPS interface board throughput (Gbps)= Min(The typical transmission packet length of Iub interface * pps * transmission efficiency, 10) = Min (750*8*8400000*0.8/1000000000, 10) = 10 (Gbps)

3.

On the control plane The CPU overload threshold of the BSC6910 is 70% and base load is 10%. BHCA supported by an EGPUa (for the control plane) board = (70% – 10%)/CPU usage consumed by a call The CPU usage consumed by a single call is associated with the traffic model. When the traffic model is changed, the available CPU usage of one EGPUa (for the control plane) board remains unchanged (60%), but the CPU usage consumed by a single call changes. Therefore, the BHCA supported by an EGPUa (for the control plane) board varies according to the traffic model. The traffic model on a live network changes with time and user equipment (UE) behavior. Therefore, the system may be congested because of limited control plane processing resources, even when the traffic in the network does not reach the claimed capacity (Erl or throughput). When the traffic model changes, it is necessary to recalculate the control plane processing resources required by the network. Then, necessary processing modules and interface boards must be added according to the requirements.

4.1.4 Hardware Capacity License Configurations The BSC6910 V100R015C00 supports the licenses for the following control items: l

"Iub Total Throughput" (including CS and PS traffic)

l

"Active User" (including users whose status is CELL_DCH or CELL_FACH)

l

"Evolved Network Intelligence Throughput"

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Table 4-4 Service boards and license control items Service Board & License Control Item


Specifications

EGPUa

Processes services and allocates resources on the user plane and control plane.

All resource of the EGPUa board used for user plane: 2000 Mbit/s (PS throughput, based on Huawei High PS traffic model) or 10,050 CS traffic (Erl), 1400 cells, and 35,000 active users, 70000 Online Users All resource of the EGPUa board used for control plane: 1,668,000 BHCA (based on Huawei's Smartphone traffic model), 700 NodeBs or 1400 cells, and 28,000 active users, 70000 Online Users EGPUa board is always used as CP&UP sharing board, the real specifications of one EGPUa board should be calculted by the ratio of CP/UP.

Iub Total Throughput

Hardware capacity license: Controls the Iub interface throughput.

Max: 120 Gbit/s; Step: 50 Mbit/s

Active User

Hardware capacity license: Controls the number of active users.

Max: 1,000,000; Step: 1000

ENIUa


PS throughput: 8000 Mbit/s

Network Intelligence Throughput License

Evolved Network Intelligence Throughput License

Maximum160 Evolved Network Intelligence Throughput License, one license: 50 Mbit/s.

l

Iub Total Throughput The control item "Iub Total Throughput" covers both the CS and PS service traffic with a step of 50 Mbit/s. The value of this control item is determined by the number of EGPUa (for the user plane) boards. With this control item, the throughput processing capabilities of the existing hardware are improved at a step of 50 Mbit/s.

l

Active User The control item "Active User" refers to the number of users whose status is CELL_DCH or CELL_FACH. The step is 1000. The value of this control item is determined by the number of EGPUa (for the control plane) boards. With this control item, the number of active users supported by the existing hardware is increased at a step of 1000.

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l


Network Intelligence Throughput License This license can be configured for a network intelligence unit ENIUa(QM1D00ENIU00) to increase the SA(Service Awareness) processing capability. Maximum of 160 network intelligence throughput licenses can be configured for one ENIUa. Network intelligence throughput licenses can be shared among the ENIUa boards of a single BSC6910 UMTS. That is, evolved network intelligence throughput licenses form a resource pool and are not bound to specific boards. In RAN15.0, each ENIUa provides a maximum PS throughput of 8000 Mbit/s. Evolved Network intelligence throughput licenses are not automatically moved with hardware. For example, when an ENIUa is moved from one BSC6910 UMTS to another, its evolved network intelligence throughput licenses are not moved.

4.1.5 Service Processing Modules The following table lists the specifications of service processing modules. Table 4-5 Specifications of service processing modules

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Name

Description

Function

Specifications

Remarks

EGPUa

Evolved General Processing Unit (for the user plane)

Processes services and allocates resources on the user plane and control plane.

All resource of the EGPUa board used f or user plane: 2000 Mbit/s (PS throughput, based on High-PS traffic model) or 10,050 CS traffic (Erl), 1400 cells, and 28,000 active users

PS throughput is calculated based on the UL/DL rate 64/384 kbit/s.

All resource of the EGPUa board used f or control plane: 1,668,000 BHCA (based on Smartphone traffic model), 700 NodeBs or 1400 cells, 35,000 active users

The BHCA is calculated based on Huawei's Smartphone traffic model.


22


Name

Description


Function

Specifications

Remarks

When control plane and user plane sharing one EGPUa board, the real capacity of EGPUa board should be calculation by the ratio of CP/ UP subsystem in this board. Eg. Ratio of CP subsystem in the EGPUa board is p%, PS Throughput:2000Mbps * (1-p%) (based on High-PS traffic model) or 10,050 CS Erlang * (1-p%); Cell: Min{1400*p%, 1400*(1-p%)}; NodeB: Min{700*p%, 700*(1-p%)}; Active User: Min{35000*p%, 28000*(1-p %)}; Online User: 70,000 * p%. ENIUa


Provides intelligent service identification.


NOTE

Active User refers to users whose status is CELL_DCH or CELL_FACH.

The EGPUa board can process services on both the user plane and control plane. You can calculate the number of EGPUa boards required by the control plane and that required by the user plane, and then add the two numbers to obtain the total number of required EGPUa boards. l

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Configuring EGPUa Boards Required by the User Plane and Hardware Capacity License


23



Item

Descripti on

Value Format

Prerequisites

Calculatio n of the Board Quantity

Iub PS through put

PS throughpu t over the

a Mbit/s

PS RAB mean data rate in active state(UL+DL) = PS throughput per subscriber in BH *3600/( PS call per sub per BH * mean hold time in Cell_DCH&Cell_FACH per PS call).

a' = a Mbps/ Throughput Capacity

If PS RAB Mean data rate in active state (UL+DL)(kbps) ranges [0, 16], PS Throughput Capacity per EGPUa UP (Mbps) = PS RAB Mean data rate * 13.75. If PS RAB Mean data rate in active state (UL+DL)(kbps) ranges [16, 40], PS Throughput Capacity per EGPUa UP (Mbps) = 220+(PS RAB Mean data rate –16)* 16.67. If PS RAB Mean data rate in active state (UL+DL)(kbps) ranges [40, 64], PS Throughput Capacity per EGPUa UP (Mbps) =620 + (PS RAB Mean data rate – 40) * 5.83. If PS RAB Mean data rate in active state (UL+DL)(kbps) ranges [64, 128], PS Throughput Capacity per EGPUa UP (Mbps) = 760 + (PS RAB Mean data rate – 64) * 5.63. If PS RAB Mean data rate in active state (UL+DL)(kbps) ranges [128, 196], PS Throughput Capacity per EGPUa UP (Mbps) = 1120 + (PS RAB Mean data rate – 128) * 5.88. If PS RAB Mean data rate in active state (UL+DL)(kbps) ranges [196, 448], PS

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Item


Descripti on

Value Format

Iub interface

Prerequisites

Calculatio n of the Board Quantity

Throughput Capacity per EGPUa UP (Mbps) = 1520 + (PS RAB Mean data rate – 128) * 1.

per EGPUa UP(Mbps)

If PS RAB Mean data rate in active state (UL+DL)(kbps) ranges [448, ∞], PS Throughput Capacity per EGPUa UP (Mbps) = 2000. Iub CS traffic

CS traffic over the Iub interface

b Erl

N/A

b' = b/ 10,050

Active users

Number of active users

n

N/A

n' = n/ 28,000

Cell number

Number of cells managed by the RNC

c

N/A

c' = c/1400

It is determined based on the network plan.

The number of EGPUa boards required for the user plane is calculated using the following formula: N_EGPUa_UP = max(a' + b', c', n') The number of licenses required for "Iub Total Throughput" is calculated using the following formula: N_EGPUa_Iub_License = ROUNDUP[(a+ b *24.4/1000)/50 Mbit/s] l

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Configuring EGPUa Boards Required by the Control Plane and Hardware Capacity License Item

Description

Value Format

Prerequisites

BHCA requirement

BHCA required by the network

b

Assume that the b' = b/x BHCA in this traffic model is x.

It is calculated based on the number of users and traffic model.


Calculation of the Board Quantity

25



Item

Description

Value Format

Active users

Number of active users

n

NodeB number

Number of NodeBs managed by the RNC

nb

Cell number


c

Prerequisites

Calculation of the Board Quantity n' = n/35,000

It is calculated based on the number of users and traffic model. nb' = nb/700

(It is determined based on the network plan.) c' = c/1400

(It is determined based on the network plan.)

The number of EGPUa boards required for the control plane is calculated using the following formula: N_EGPUa_CP = max(b', n', nb', c') N_EGPUa = ROUNDUP(N_EGPUa_CP + N_EGPUa_UP) The number of hardware capacity licenses required for "Active User" is calculated using the following formula: N_EGPUa_ActiveUser_License = ROUNDUP (n/1000) l

Redundancy Configurations for Service Processing Modules: The EGPUa board can process services on both the control plane and user plane. All the EGPUa boards (for both the user plane and control plane) form a resource pool and work in the N+1 redundancy mode.

l

Configuring ENIUa Boards Required by the User Plane and Hardware Capacity License Item

Descriptio n

Value Format

Iub PS throughput

PS throughput over the Iub interface

a Mbit/s

Prerequisites

Calculation of the Board Quantity a' = a/8000

If the SA(Service Awareness) function needs to be provided, ENIUa must be configured. The number of ENIUa boards required: Issue 07 (2014-09-12)


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N_ NIUa = ROUNDUP (a/8000) ; Evolved Network Intelligence Throughput License = ROUNDUP (a/50) NOTE

The ENIUa can enable hardware processing capability only when "Evolved Network Intelligence Processing Throughput(per 50Mbps)" is loaded.

l

Configuration Principle of ESAUa Boards The default number of SAU board is one for EBC. If the customer has purchased and used Huawei Nastar or other OSS feature such as SON, one or two SAUc boards need to be configured in the MPS of the BSC6900. The number of SAUc boards is up to OSS. Configuration Scenarios

Number of SAU boards (pcs)

Nastar Only

1

At least one in EBC and SON

1

Nastar, and at least one in EBC and SON

2

4.1.6 Interface Boards The BSC6910 supports the following interfaces: l

GE electrical interface

l

GE optical interface

l

10GE optical interface

l

Channelized STM-1 interface

l

Unchannelized STM-1 interface

Table 4-6 Interface boards

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Interface Board

Description

Interface

GOUc


Iub/Iu/Iur/Iur-p/Iur-g

FG2c



AOUc


Iub

UOIc


Iub/Iu/Iur

EXOUa

Evolved 10GE Optical interface Unit (2 10GE)



27



Table 4-7 Iub/Iur/Iur-g/Iur-p interface specifications Board

Iub/Iur/Iur-g/Iur-p

Number of Connected NodeBs

CID/UDP

Voice (Erl)

VP (Erl)

UL (Mbit/s)

DL (Mbit/s)

UL+DL (Mbit/s)

FG2c/ GOUc

18,000

18,00 0

2600

2600

2600

500

129,000

AOUc

18,000

5500

300

300

600

500

79,000

UOIc

18,000

9000

800

800

1200

500

79,000

EXOUa

75,000

75,00 0

8000

8000

10,000

1500

1,000,000

Table 4-8 Iu-CS/Iu-PS interface specifications Board

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Iu-CS

Iu-PS

Voice (Erl)

VP(Erl)

UL (Mbit/s)

DL(Mbit/ s)

UL +DL (Mbit/ s)

IU PS on-line users (TEID)

IU PS Session setup/ release times

FG2c/ GOUc

18,000

9000

3200

3200

3200

200,000

5000

UOIc

18,000

9000

900

900

1800

120,000

5000

EXOUa

75,000

37,500

10,000

10,000

10,000

500,000

50,000


28



NOTE

l The values of UL (Mbit/s), DL (Mbit/s), and DL (Mbit/s) are calculated based on the UL/DL rate 64/384 kbit/s. l The service processing specifications of the Iur interface are the same as those of the Iub interface. l The preceding tables list the maximum processing capabilities of boards. For example, values in the Number of Connected NodeBs indicate the maximum numbers of NodeBs that can be connected. The actual number of NodeBs is restricted by the throughput. l VP in the preceding tables refers to the 64 kbit/s video phone service l One active CS user consumes two CIDs/UDPs on the Iub interface board, and one active HSPA PS user consumes three CIDs/UDPs on the Iub interface board. l One active CS user consumes one CID/UDP on the Iu-CS interface board, and PS user consumes one "IU PS online users"(TEID Tunnel Endpoint ID) on the Iu-PS interface board. l Online users: specify the users in the RRC connection, including CELL_DCH, CELL_FACH, CELL_PCH, and URA_PCH users. Active users: specify the users in CELL_DCH or CELL_FACH status. l The number of session setups/releases indicates the signaling processing capability of interface boards and is applicable to the IuPS interfaces. The following table lists the mapping between the interface signaling processing requirements and the traffic model.

Table 4-9 Session setup/release times in IuPS for every signaling procedure in traffic model Control plane traffic parameter

Unit

IuPS session setup/ release times

CS voice call per subscriber per BH

times

-

Handover times per CS voice call (Inter/Intra RNC soft handover)

times/call

-

PS call per subscriber per BH

times

1

Handover times per PS call (Inter/Intra RNC soft handover)

times/call

-

PS channel switch per PS call

times/call

0.5

Cell update per PS call

times/call

0.5

NAS signaling per subscriber per BH(times)

times/per subscriber

-

The following table lists the network factors that must be considered during interface board configurations.

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Interfac e

Item

Description

Remarks

Iub

Iub transmission type

Iub interface transmission type

It is determined based on the network plan. The BSC6910 supports the following Iub networking modes: l FE Electrical (IP) l GE Optical (IP) l 10GE Optical (IP) l Unchannelized STM-1 (ATM) l Channelized STM-1 (ATM)

Iu-CS

Iub PS throughput


They are calculated based on the number of users and traffic model.

Iub CS traffic


Iub active users (CID/UDP)

Number of transport bearers for active users supported by the Iub interface of the RNC

NodeB quantity



Iu-CS transmission type

Iu-CS interface transmission type

It is determined based on the network plan. The BSC6910 supports the following Iu-CS networking modes: l FE Electrical (IP) l GE Optical (IP) l 10GE Optical (IP) l Unchannelized STM-1 (ATM) l Channelized STM-1 (ATM)

Iu-CS CS traffic

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Iu interface CS service traffic



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Interfac e

Item

Description

Remarks

Iu-PS

Iu-PS transmission type

Iu-PS interface transmission type

It is determined based on the network plan. The BSC6910 supports the following Iu-PS networking modes: l FE Electrical (IP) l GE Optical (IP) l 10GE Optical (IP) l Unchannelized STM-1(ATM)

Iu-PS throughput

Iu interface PS service traffic

Iu-PS online users

Number of online users over the Iu-PS connecting to the RNC

IuPS session set-up and release requirement in BH

Number of sessions that need to be supported on the IuPS interface of RNC


The following table shows how to configure the Iub interface board, (Iur interface is similar to Iub interface).

Iub

Item

Description

Prerequisites



The board specification is determined based on the interface type.

The BSC6910 supports the following Iub networking modes:


l FE Electrical (IP) l GE Electrical (IP) l GE Optical (IP) l 10GE Optical (IP) l Unchannelized STM-1 (ATM) l Channelized STM-1 (ATM)

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Item

Description

Prerequisites


Iub PS throughput

a Mbit/s

Calculate the Board real capacity for PS throughput in Iub interface(Gbps)= Min[Transmission packet length of Iub interface (Byte) * 8 * 8400000 * 80%/ 1,000,000,000, 10],or,

For EXOUa board: a' = a/ Board real capacity for PS throughput in Iub interface

(The calculation method is the same as that of the EGPUa UP.)

useing the default recommended value: 8Gbps,corresponding to mean transport packet length of 150Byte. Iub CS traffic

b Erl

Iub active users (CID/ UDP)

an

NodeB quantity

nb'

(The calculation method is the same as that of the EGPUa UP.)

(It refers to the number of active users supported by the Iub interface. )

(It is determined based on the network plan.)

For GOUa/ FG2c/ATM interface board: a' = a/ Board specification

b' = b/Board specification

an' = an/Board specification

nb' = nb/Board specification

The number of Iub boards required by the network is calculated as follows: N_IF_IUB = ROUNDUP(MAX(a'+ b', n', nb')) The configuration method of the Iu-CS, Iu-PS and Iur interfaces are similar to that of the Iub interface (without considering the NodeB). For Iur interace, if there are several Iur interaces which do not share ports with each other, the port requirement and port specification of each interface board should be take into account. The following table shows how to configure the IuCS/IuPS interface board

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Iu


Item

Description

Limitations


IuPS Throughput

IuPS_a Mbps

Calculate the Board real capacity for PS throughput in IuPS interface(Gbps) =Min[ Transmission packet length of Iub interface (Byte) 8*8400000 * 80%/ 1000000000, 10], or,

1. EXOUa board: a' = IuPS_a Mpbs/ IuPS real specification of EXOUa board.

useing the default recommended value: 10 (Gbps).

a' = IuPS_a / Board IuPS specification

2. FG2c board and ATM boards:

IuCS Traffic

IuCS_b Erl

b' = IuCS_b / Board Erlang specification

IuPS on-line users

IuPS_users

c' = IuPS_users/Board TEID specificaiton

IuPS session set-up and release requirement in BH

IuPS_session s

d' = IuPS_sessions/IuPS session setup and release requirement

If IuPS and IuCS share interface board: N_INT_Iu(pair) = ROUNDUP[Max(a' + b', c', d')] If IuPS and IuCS not share interface board: N_INT_IuCS(pair) = ROUNDUP(b') N_INT_IuPS(pair) = ROUNDUP[Max(a', c', d')] N_INT_Iu(pair) = N_INT_IuCS + N_INT_IuPS Redundancy Configuration for Interface Boards The interface boards support the following backup modes: l

1+1 backup mode (Double the number of required interface boards calculated based on actual network capacity.)

l

N+1 backup mode (This mode applies only to IP interface boards where the resource pools are enabled.)

Only GOUc, FG2c, EXOUa boards support the N+1 backup mode. By default, the 1+1 backup mode is used. In this mode, the number of required interface boards is calculated as follows: Sum (Iub, Iu-CS, Iu-PS, Iur) x 2 Issue 07 (2014-09-12)


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In N+1 backup mode, if Iur, Iu-CS, and Iu-PS interfaces share one board, the number of interface boards = ROUNDUP ((SUM(Iu-CS interfaces, Iu-PS interfaces, Iur interfaces) + 1). If Iur, Iu-CS, and Iu-PS interfaces are separately configured on different boards, the number of interface boards + SUM[(ROUNDUP (Iu-CS interfaces)+1, ROUNDUP(IUPS)+1, ROUNDUP (IUR)+1)]. If some of Iur, Iu-CS, and Iu-PS interfaces share one board, the number of interface boards is calculated based on the proceeding two formulas.

4.1.7 Configuration Principles of Interface Boards and Service Boards Service boards and interface boards must be distributed evenly among subracks to reduce the CPU and swapping resources consumed during inter-subrack swaps and avoid traffic volume restrictions caused by limited inter-subrack bandwidths. Assume that there are 12 GPU (for the control plane) boards, 9 GPU (for the user plane) boards, 3 EXOUa boards, and 3 subracks. Then, it is recommended that four GPU (for control plane) boards, three GPU (for the user plane) boards, and one EXOUa board be configured in each subrack. Iu interface boards in each subrack form a resource pool. A route to the core network is configured on each Iu interface board. Iub interface boards in each subrack form a transmission resource pool. Routes to all the NodeBs are configured on each Iub interface board.

4.1.8 Board Redundancy Types The following table lists the board redundancy types.

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Table 4-10 Board Redundancy Types Board

Description

Redundancy Type

Number of Slots

EGPUa

Evolved General Processing Unit

N+1 backup mode in the resource pool

Any universal slots

EOMUa


Active/standby mode

An EOMUa board is installed in two slots in the MPS only. Active and standby boards are installed in four consecutive slots starting with an oddnumbered slot. All the boards are configured in the same plane (rear or back plane).

ESAUa


Separately configured

Zero, one, or two ESAUa boards are installed and every ESAUa board occupies two slots.

EXOUa


Active/standby mode (recommended);

Any universal slots

ENIUa



Any universal slots

SCUb


Active/standby mode

Fixed slots

FG2c



Any universal slots



GOUc


N+1 backup mode in the resource pool Any universal slots


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AOUc


Active/standby mode

Of the two boards in each pair, one must be installed in an oddnumbered slot and the other in an adjacent even-numbered slot.

UOIc


Active/standby mode

Of the two boards in each pair, one must be installed in an oddnumbered slot and the other in an adjacent even-numbered slot.

GCUa

General Clock Unit

Active/standby mode

Fixed slots


35



Board

Description

Redundancy Type

Number of Slots

GCGa

GPS&Clock Processing Unit

Active/standby mode

Fixed slots

4.1.9 Auxiliary Material Configurations The following table lists the auxiliary materials. Table 4-11 Auxiliary materials Part Number

Description

Remarks

QW1P00GEOM00

GE Optical Connector

GE optical module

QW1P0STMOM00

STM-1 Optical Connector

STM-1optical module

QM1P00GEOM01

10GE Optical Connector

10GE optical module

QW1P0FIBER00

Optical Fiber

Optical fiber

QW1P0000IM00

Installation Material Package

Installation material suite

QMAI00EDOC00

Documentation

Electronic documentation

WP1B4PBCBN00

Cabinet

Cabinet

l

Configuration principle of GE optical modules (QW1P00GEOM00): The GE optical modules are fully configured on optical interface boards. Number of GE optical modules = Number of WP1D000GOU01s x 4

l

Configuration principle of STM-1 optical modules (QW1P0STMOM00): The STM-1 optical modules are fully configured on optical interface boards. Number of STM-1 optical modules = (Number of WP1D000AOU01s) x 4 + (Number of WP1D000UOI01s) x 8

l

Configuration principle of 10GE optical modules (QM1P00GEOM01): The 10GE optical modules are fully configured on optical interface boards. Number of 10GE optical modules = Number of QM1D00EXOU00 x 2

l

Configuration principle of the optical fibers (QW1P0FIBER00): The optical cables are configured according to the number of optical modules required in the BSC6910. Number of optical fibers = (Number of 10GE optical modules + Number of GE optical modules) x 2

l Issue 07 (2014-09-12)

Configuration principle of the installation material suite (QW1P0000IM00): Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd.

36



One installation material suite is configured for each BSC6910 cabinet (WP1B4PBCBN00). l

Configuration principle of the electronic documentation (QMAI00EDOC00): A set of electronic documentation is delivered with each BSC6910.

4.1.10 Description of Restrictions on Inter-Subrack Switching A pair of active and standby SCUb boards can process data at 40 Gbit/s on the physical layer. The SCUb boards in various subracks are connected in chain mode. If either of the active and standby board becomes faulty, the processing capability is halved. If the SCU boards are not evenly configured among the subracks or services are not evenly deployed among the subracks, the volume of inter-subrack data flows may sharply increase. Once the volume exceeds the capacity, services are interrupted. Therefore, all types of boards should be evenly configured among subracks, services should be evenly deployed, and the userplane capacity should be similar. For example, There are 15 EGPUa boards, 8 pairs of GOUc boards for the Iub interface, and 6 subracks. Based on the preceding configuration principles, each subrack should be configured with two or three EGPUa boards, one or two pairs of GOUc boards. The subrack with more EGPUa boards should be configured with more GOUc boards. The following table lists a recommended configuration. Subrack

Number of EGPUa Boards

Number of GOUc Boards (pair)

MPS

3

2

EPS 1

3

2

EPS 2

3

1

EPS 3

2

1

EPS 4

2

1

EPS 5

2

1

4.2 BSC6910 GSM Configurations This section describes hardware configurations and how to calculate the number of required licenses when the BSC6910 works in the GO mode.

4.2.1 Cabinet Configurations The following table lists the cabinet configuration.

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Table 4-12 Cabinet configurations Part Number

Description

Remarks

QM1B0PBCDP00

Cabinet

N/A

A BSC6910 GSM can be configured with one cabinet to achieve maximum capacity. A maximum of three subracks can be configured in each cabinet. In GU mode, the three subracks can be distributed in two cabinets.

4.2.2 Subrack Configurations The following table lists the subrack configuration. Table 4-13 Subrack Configurations Part Number

Name

Description


QM1K00PBCS00

Subrack

Unified service architecture basic subrack

Processes basic services.

The MPS and EPS of the BSC6910 have the same physical structure; that is, they both use the PARCb subrack. The difference is that the MPS houses the EOMUa, GCUa, GCGa, and EGPUa/ EXPUa (for resource management) boards, which are not housed in the EPS. Table 4-14 Fixed board configurations Board

Logical Function

Description


Configuration Principle

EGPUa

RMP

Resource Management Processing

Provides the resource management function.

One pair of boards is configured on the BSC in 1+1 backup mode. The board is the same as that used by the universal service processor (USP).

OMU


Provides the evolved operation and maintenance function.

One pair of boards is configured on the BSC in 1+1 backup mode. Each EOMUa board is installed in two slots.

/EXPUa

EOMUa

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Board

Logical Function

Description


Configuration Principle

SCUb

SCU


Provides the PS switching and control function.

One pair of boards is installed in each subrack in 1+1 backup mode. A maximum of three pairs can be configured on the BSC.

GCUa/ GCGa

GCU

General Clock unit (with GPS)

Provides the general clock. The GCGa supports the GPS function.

One pair of boards is configured on the BSC in 1+1 backup mode.

MPS configuration principle: A BSC6910 must be equipped with one MPS only. The MPS configurations are as follows: 1.

Slot assignment: l 8–9: EGPUa/EXPUa (Fixed) l 10–13: EOMUa (recommended) l 14–15: GCUa or GCGa (Fixed) l 20–21: SCUb (Fixed)

2.

If the GPS clock is not required, each BSC6910 is configured with two GCUa boards, working in 1+1 redundancy mode. If the GPS clock is required, each BSC6910 is configured with two GCGa boards, working in 1+1 redundancy mode.

3.

If the customer uses Huawei Nastar/SON, 1~2 pcs ESAUa boards are required and be inserted in slot 0~3 commended. MPS needs to reserve 4 slots for ESAUa even if the ESAUa boards are not configured temporarily.

4.

The EGPUa/EXPUa boards can be inserted in any vacant slots excepting fixed slots. An MPS can provide 14 slots for the EGPUa/EXPUa board.

5.

Interface boards can be inserted only in slots 16 to 19 and slots 22 to 27. It is not advised that EPUa and ESAUa be inserted into these slots.

6.

GOUc, FG2c, EXOUa and POUc are interface boards. The EXOUa boards can be inserted only in slots 16 to 19 and slots 22 to 25. The POUc, GOUc, and FG2c boards can be inserted only in slots 16 to 19 and slots 22 to 27. Among them, slots 16 to 19 and 22 to 25 are preferred.

7.

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An MPS provides 18 universal slots and 10 interface board slots. The 10 interface slots consist of 8 10GE slots and 2 GE slots. The EXOUa board is installed in only 10GE slots (slots 16 to 19 and slots 22 to 25).


39



EPS configuration principle: The EPS configurations are as follows: 1.

Slots 20 and 21 are reserved for the SCUb board.

2.

If the customer uses Huawei Nastar, one ESAUa board is required and can be inserted in any vacant slot.

3.

The EGPUa/EXPUa boards can be inserted in any vacant slots excepting fixed slots; that is, the EPS can provide 26 slots for the EGPUa/EXPUa board.

4.

Interface boards can be inserted only in slots 14 to 19 and slots 22 to 27. It is not advised that EPUa and ESAUa be inserted into these slots.

5.

GOUc, FG2c, EXOUa and POUc are interface boards. The EXOUa boards can be inserted only in slots 16 to 19 and slots 22 to 25. The POUc, GOUc, and FG2c boards can be inserted only in slots 14 to 19 and slots 22 to 27. Among them, slots 16 to 19 and 22 to 25 are preferred.

6.

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An EPS provides 26 universal slots and 12 interface board slots. The 12 interface slots consist of 8 10GE slots and 4 GE slots. The EXOUa board is installed in only 10GE slots (slots 16 to 19 and 22 to 25).


40



The number of required EPSs is calculated as follows: l

For a new site – Number of required EPSs_1 = ROUNDUP ((Number of required EXOUa boards – Number of EXOUa boards that can be housed in an MPS)/Number of EXOUa boards that can be housed in an EPS,0) If the number of required EXOUa boards is smaller than that can be housed in an MPS, the number of required EPSs is 0. – Number of required EPSs_2 = ROUNDUP [(Number of required interface boards – Number of interface boards that can be housed in an MPS)/Number of interface boards that can be housed in an EPS] If the number of required interface boards is smaller than that can be housed in an MPS, the number of required EPSs_2 is 0. – Number of required EPSs_3 = ROUNDUP [(Number of required EGPUa/EXPUa boards + Number of required interface boards – Number of universal slots provided by the MPS)/Number of universal slots provided by one EPS] If the number of required EGPUa/EXPUa boards and interface boards is smaller than the number of universal slots provided by the MPS, the number of required EPSs_3 is 0. – Number of EPSs = MAX (Number of required EPSs_1, Number of required EPSs_2, Number of required EPSs_3)

l

For capacity expansion Number of required EPSs = Number of EPSs required after capacity expansion – Number of EPSs configured before capacity expansion

Cabinet power consumption calculation The maximum power supply a subrack is 4000 W. The maximum power consumption of a cabinet is 7100 W. The calculation formulas are as follows: System power consumption = Pavg of the power consumption of all boards + Pavg of the fan Issue 07 (2014-09-12)


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Board

Pavg

Fan

200

EGPUa/EXPUa/ENIUa/EXOUa

102

GOUc/FG2c/POUc

80

GCGa/GCUa

20

SCUb

80

EOMUa/ESAUa

102

4.2.3 Hardware Capacity License Configurations and Product Specifications The BSC6910 V100R015C00 supports the licenses for the following control items: l

"BSC HW TRX Capacity (per TRX)"

l

"BSC HW PDCH Capacity (per PDCH)"

l

"Smart Service Processing Throughput (per 50 Mbps)"

l

Hardware

Description

LGMIBHTC

BSC TRX Hardware Capacity (per TRX)

LGMIBHDC

BSC PDCH Hardware Capacity (per PDCH)

LGW1DPIHC02

Smart Service Processing Throughput (per 50 Mbps)

BSC HW TRX Capacity (per TRX)- LGMIBHTC BSC HW TRX Capacity (per TRX) represents the number of activated TRXs, which ranges from 0 to 24,000. The BSC calculates the number of activated TRXs after new BTSs, cells or TRXs are added and checks whether it is greater than the number specified by the "BSC HW TRX Capacity (per TRX)" license.

l

BSC HW PDCH Capacity (per PDCH)- LGMIBHDC BSC HW PDCH Capacity (per PDCH) represents the number of activated PDCHs, which ranges from 0 to 96,000. The number of static PDCHs is determined before BSC configuration. The number of dynamic PDCHs is determined by the BSC. If the number of activated PDCHs is more than the number specified by the "BSC HW PDCH Capacity (per PDCH)" license, configuring or allocating PDCHs is not allowed. Before the BSC is configured, required hardware capacity licenses must be obtained.

l

Smart Service Processing Throughput(per 50 Mbps)- LGW1DPIHC02 Represents BSC6910 Hardware Capacity of ENIUa board. Smart Service Processing Throughput (per 50 Mbps): is the hardware capacity license of ENIUa boards on the BSC6910. The ENIUa can enable hardware processing capability only when "Resource-BSC6910-LGW1DPIHC02-Evolved Network Intelligence

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Processing Throughput(per 50 Mbps)" is loaded. Each license provides a throughput of 50 Mbit/s. The maximum number of license files is calculated by dividing NIUa processing capability and 50 Mbit/s. The ENIUa can process SA(Service Awareness) services on GSM and UMTS sides at one time. The traffic carried on the NIUa board is the sum of traffic over GSM Gb interfaces and UMTS Iu interfaces. If the BSC6900 is replaced by a BSC6910, the BSC license cannot be used and needs to be quoted again. However the existing BTS license can be directly used by using license adjusting tools after the BSC6910 is used.

4.2.4 Service Boards The following table lists the specifications of service boards. Table 4-15 Service boards

EGPUa

Name

Description


Specification s

Remarks

RMP



This function allows the resource management of systems.

One pair of boards are configured on the BSC.

GCUP

GSM BSC Control plane and User plane Processing

Processes CS and PS services on both the user plane and control plane. The processing capability of this board is equal to the combined capability of the XPU, DPUf, and DPUg.

l TRX: 1000

The BHCA is calculated based on Huawei's default traffic model.

GSM BSC Mathematics Calculation Processing

Provides the IBCA function.

N/A

GMCP

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l BTS: 600 l Cell: 600 l PDCH: 3000


The number of the GMCP board is calculated based on IBCA requirements at network deployment.

43


EXPUa

ENIUa

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Name

Description


Specification s

Remarks

NASP

Network Assisted Service Process

Performs network assisted service processing.

N/A

The number of the NASP board is calculated based on IBCA requirements at network deployment. One NASP board is configured in each BSC.

RMP



This function allows the resource management of systems.

One pair of boards are configured on the BSC.

GCUP

GSM BSC Control plane and User plane Processing

Processes CS and PS services on both the user plane and control plane. The processing capability of this board is equal to the combined capability of the XPU, DPUf, and DPUg.

l TRX: 1000

The BHCA is calculated based on Huawei's default traffic model.

GMCP

GSM BSC Mathematics Calculation Processing

Provides the IBCA function.

N/A

The number of the GMCP board is calculated based on IBCA requirements at network deployment.

NIU


Provides intelligent service identification .


The ENIUa board needs to be configured if the intelligent service identification service is required.

l BTS: 600 l Cell: 600 l PDCH: 3000


44


ESAUa

l


Name

Description


Specification s

Remarks

SAU


Provides evolved service aware function.

The SAU collects, filters, and reports the data from service boards to the Nastar/ SON.

If the customer has purchased the Nastar/SON, 1 or 2 pcs ESAUa must be configured on the BSC.

Configuration principle of the EGPUa/EXPUa board: The USP on the BSC6910 has two boards, EGPUa and EXPUa. The EXPUa board is used for GSM network only. The USP has logical functions of RMP, GCUP, GMCP, and NASP, as shown in the table above. EGPUa and EXPUa boards can be used in GO and GU mode. By default, the EGPUa board is used. In UO mode, only the EGPUa board can be installed. EGPUa/EXPUa configuration principle for the RMP: In GO mode, both EGPUa and EXPUa boards can be used. By default, the EGPUa is used. In GU or UO mode, only the EGPUa board can be installed. EGPUa/EXPUa configuration principle for the GMCP: In GO or GU mode, both EGPUa and EXPUa boards can be used. By default, the EGPUa is installed. EGPUa/EXPUa configuration principle for the NASP: Only the EGPUa board can be installed for the NASP.

l

Configuration principle of the RMP Only one pair of RMP is installed in the MSP subrack in 1+1 backup mode for the entire system.

l

Configuration principle of the GCUP board: The BSC6900 and BSC6910 calculate the required number of service processing units in different methods. BSC6900: The numbers of control plane boards (XPUa and XPUb) are calculated based on either the number of planned TRXs or the BHCA. The numbers of PS user plane boards (DPUd and DPUg) are calculated based on the number of planned PDCHs. The numbers of CS user plane boards (DPUc and DPUf) are calculated based on the predicted traffic. BSC6910: The control plane board and user plane board are integrated on the GCUP board. The number of GCUP boards is calculated as follows: Divide the site specifications and the predicted specifications separately by the number of TRXs, number of PDCHs, BHCA, or traffic. The maximum number among the obtained four numbers is the number of GCUP boards. Table 4-16 GCUP board specifications TRX

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1000 Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd.

45



Cell

600

BTS

600

Traffic

6250

6.25 Erl per TRX

PDCH

3000

3 PDCHs per TRX

PS throughput

300 Mbit/s

3000 x 100 kbit/s, EGRPS2A

Equivalent BHCA

2,200,000

Calculated based on the actual benchmark weight, including the PS throughput. The BHCA is calculated based on Huawei's default traffic model.

The number of standby GCUP boards can be manually configured (recommended redundancy mode: N+1). By default, no standby GCUP board is configured. A minimum of two GCPU boards are configured. 1.

Based on the number of TRXs The number of required EGPUa boards = ROUNDUP(TotalTRXNo/ TRXNoPerEGPUa,0) – Existing number of EGPUa boards + 1

2.

On the CS user plane Erlang The number of required EGPUa boards = ROUNDUP(TotalVoiceErl/ VoiceErlPerEGPUa,0) – Existing number of EGPUa boards + 1

3.

On the PS user plane PDCH Number The number of required EGPUa boards = ROUNDUP(TotalPDCH/PDCHPerEGPUa, 0) – Existing number of EGPUa boards + 1

4.

On signal plane The number of required EGPUa boards = ROUNDUP(TotalBHCA/ BHCAPerEGPUa,0) – Existing number of EGPUa boards + 1

5.

On Cell Number The number of required EGPUa boards = ROUNDUP(TotalCellNo / CellNoPerEGPUa,0) –Existing number of EGPUa boards + 1

6.

On BTS Number The number of required EGPUa boards = ROUNDUP(TotalBTSNo / BTSNoPerEGPUa,0) –Existing number of EGPUa boards + 1

7. l

The total number of required EGPUa boards equals the maximum number of the proceeding three numbers.

Configuration principle of the GMCP board: The GMCP board is configured based on IBCA requirements at network deployment. If the IBCA function is enabled, the number of NASP boards depends on the number of carriers that have enabled the IBCA. Generally, one GMCP boards supports 2048 carriers. The BSC6910 RAN15.0 supports a maximum of 4096 carriers with the IBCA function. The GMCP board uses N+1 redundancy mode. The total number of GMCP boards is calculated using the following formula:

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Number of required GMCP boards + ROUNDUP (TotalTRXNo/2048,0) + 1 l

Configuration principle of the NASP board: The NASP board is configured based on Cellular-Aided Wi-Fi Detection and Selection requirements at network deployment. If the function is enabled, one NASP board is configured in each BSC.

l

Configuration principle of the ENIUa board: The ENIUa board needs to be configured if the intelligent service identification service is required. If the function is enabled, one ENIUa board is configured in each BSC.

l

Configuration principle of the ESAUa: If the customer has purchased the Nastar/SON, 1~2 pcs ESAUa must be configured on the BSC.

4.2.5 Interface Boards The BSC6910 supports FE electrical ports, GE optical ports and 10GE optical ports in IP networking, and supports channelized STM-1 ports in TDM networking. Table 4-17 Interface boards Part Number

Name

Description

Interfaces

WP1D000FG201

FG2c



WP1D000GOU01

GOUc



QM1D00EXOU00

EXOUa



WP1D000POU01

POUc

TDM or IP Interface Unit (4 STM-1, Channelized)

TDM: Abis IP over STM-1: Abis

Table 4-18 Interface board specifications

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Part Number

Transmis sion Type

Port Type

Por t No.

TR X

A CIC (64K )

Ater CIC (16K)

Gb Throughp ut (Mbit/s)

WP1D000FG 201 (FG2c)

IP

FE/GE electrical port

12/4

204 8

23,0 40

N/A

2000

WP1D000GO U01(GOUc)

IP

GE optical port

4

204 8

23,0 40

N/A

2000


47



Part Number

Transmis sion Type

Port Type

Por t No.

TR X

A CIC (64K )

Ater CIC (16K)

Gb Throughp ut (Mbit/s)

QM1D00EX OU00 (EXOUa)

IP

10GE optical port

2

800 0

75,0 00

N/A

8000

WP1D000PO U01 (POUc)

TDM

CSTM-1 port

4

102 4

N/A

N/A

N/A

IP

IP CSTM-1

4

204 8

NA

NA

NA

NOTE

In Abis over TDM, the POUc supports a maximum of 1024 TRXs when both of the following conditions are met: l The traffic model is 6.25 Erlangs per TRX. Three PDCHs are configured on each TRX on the average and the MCS-7 is used, or two PDCHs are configured on each TRX on the average and the MCS-9 is used. l In fixed Abis networking, idle timeslots and monitoring timeslots must be properly configured. Otherwise, the number of TRXs supported by the POUc cannot reach the maximum specification. After the VAMOS feature is enabled, extra Abis bandwidth is required, which also affects the TRX specifications of interface boards.

Configuration principle of interface boards: The total number of required interface boards equals the sum of interface boards required on each interface. Interface boards work in 1+1 active/standby mode. The BSC6910 does not support the BM/TC separated mode and therefore does not have the Ater interface. The A, Gb, and Abis interfaces must be configured on the BM side. It is recommended to configure the A, Gb, and Abis interfaces on different interface boards. 1.

Calculation of Abis interface boards Select the types of interface board based on the network plan. The number of required Abis interface boards is calculated based on either the service capability (number of supported TRXs) or number of required ports. The number of required Abis interface boards is the larger one of the two values. Number of Abis interface boards = 2 x ROUNDUP (MAX (Number of TRXs in a transmission mode/Number of TRXs supported by the interface board, Number of ports in a transmission mode/Number of ports supported by the interface boards), 0) The POUc must meet the following requirement: Number of TRXs supported by the POUc x (Average number of Erlangs per TRX + Average number of PDCHs per TRX x Number of timeslots required for PS transmission) ≤ 16,384 The following table lists the number of timeslots required for PS transmission.

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Number of timeslots required for PS transmission

Value

CS-1

1

CS-2

1

CS-3

2

CS-4

2

MCS-1

1

MCS-2

1

MCS-3

2

MCS-4

2

MCS-5

2

MCS-6

2

MCS-7

3

MCS-8

4

MCS-9

4

For example: l Assume that the POUc supports 1024 TRXs, the average number of Erlangs per TRX is 6.25, the average number of PDCHs per TRX is 3, and the number of timeslots required for PS transmission is 3 when MCS-7 is used. Then, the calculation result is 15,616, which is less than 16,384. l Assume that the POUc supports 512 TRXs, the average number of Erlangs per TRX is 6.25, the average number of PDCHs per TRX is 4, and the number of timeslots required for PS transmission is 4 when MCS-9 is used. Then, the calculation result is 22,784, which is greater than 16,384. Therefore, the number of TRXs supported by the POUc should be reduced to 736. l In Abis TDM networking, the BSC6910 supports only the POUc board (TDM over STM-1). If a TDM over E1/T1 link is used for the transmission to the BSC over Abis interfaces, the TDM over E1/T1 must be converted to a TDM over STM-1 link by using a device that performs optical-to-electrical conversion, for example, Huawei optical switch node (OSN) products. l If the BTS provides IP over E1 links, the BSC provides IP transmission links, and the transmission equipment provides Abis interfaces for IP over E1 links, only GE interface boards FG2c or GOUc, instead of the 10GE interface board EXOUa, can be configured on the BSC6910. 2.

Calculation of A interface boards Select the types of interface board based on the network plan. The number of A interface boards is calculated based on the service capability (number of supported CICs).

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Number of A interface boards = 2 x ROUNDUP (ACICNumber/Number of CICs supported by an A interface board, 0) 3.

Calculation of Gb interface boards Select the types of interface board based on the network plan. The number of Gb interface boards is calculated based on the service capability (bandwidth). Number of Gb interface boards = 2 x ROUNDUP (Gb Throughput/BSC data flow over Gb interface supported by the interface board, 0)

4.

Calculation of total interface boards Number of interface boards = Number of Abis interface boards + Number of A interface boards + Number of Gb interface boards

5.

Calculation of total interface boards when multi interface sharing INT board For GSM every interface has it's INT board exclusive by default. And it is not recommended to multi interface sharing one INT board for reasons below: 1)The ralationship between Abis INT board and BTS are fixed. So it is not recommended for Abis to sharing INT board with other interface. 2)Multi interface sharing INT board only applys to small capacity BSC. Calculation of total interface boards when multi interface sharing INT board: Number of Interface board = 2*RoundUp(Number of Abis Interface board + Number of A Interface board + Number of Gb Interface board, 0) Number of Abis Interface board = MAX (Number of TRXs in a transmission mode/ Number of TRXs supported by the interface board, Number of ports in a transmission mode/Number of ports supported by the interface boards) Number of A Interface board = ACICNumber/Number of CICs supported by an A interface board Number of Gb Interface board = GbThroughput/BSC data flow over Gb interface supported by the interface board

4.2.6 General Principles for Slot Configurations Services of TRXs connected to interface boards in a subrack are preferentially processed by service processing units in the same subrack. If the resources required by a subrack exceed the specified threshold, load sharing is implemented between subracks of the BSC. The purpose is to reduce resources used for inter-subrack switching. Boards are configured according to the following principles: l

Interface boards and service processing units should be distributed as evenly as possible among subracks. This reduces the consumption of processor resources and switching resources by inter-subrack switching. Interface boards can be configured only in rear slots, and service processing units can be configured in front or rear slots. It is recommended that service processing units be configured in front slots. Under a BSC, A interface boards, Abis interface boards, and service processing units must be distributed as evenly as possible among subracks. Configuring the same type of board in the same subrack lowers system reliability.

l

You do not have to specify the subrack and slot number for configuring M3UA links. The number of MSUA links are equal to (recommended) or larger than the number of EGPUa or EXPUa boards.

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l


General principles of board configuration: The basic principles during network plan and design do not change by devices. The basic principles include but not limited to the following: – Each LAC can receive more than 120 paging requests per second over the Um interface when a single CCCH is configured. Therefore, it is recommended to configure 512 TRXs for each LAC in the case of a single CCCH. The TRX number can be adjusted by traffic. – Consecutive PDCHs are configured so that uses can use multiple consecutive slots. – Other basic principles during GSM network plan

l

General principles for slot restrictions: The GCUa/GCGa, EOMUa, SCUb, and RMP boards are inserted in fixed slots. The interface boards and service boards can be inserted in slots within specific range. For details, see the subrack configurations part.

4.2.7 Auxiliary Material Configurations The following table lists the auxiliary materials. Table 4-19 Auxiliary materials Part Number

Name

Description

QW1P0STMOM00

STM-1 Optical Connector

STM-1optical module

QW1P00GEOM00

GE Optical Connector

GE optical module

QM1P00GEOM01

10GE Optical Connector

10GE optical module

QW1P0FIBER00

Optical Fiber

Optical fiber

QW1P0000IM00

Installation Material Package

Installation material suite

QMAI00EDOC00

Documentation

Electronic documentation

l

Configuration principle of STM-1 optical modules (QW1P0STMOM00) The STM-1 optical modules are fully configured on optical interface boards. Number of STM-1 optical modules = Number of OIUa boards + Number of POUc boards x4

l

Configuration principle of GE optical modules (QW1P00GEOM00): The GE optical modules are fully configured for active and standby optical interface boards. Number of GE optical modules = Number of GOUc boards (WP1D000GOU01) x 4

l

Configuration principle of 10GE optical modules (QW1P00GEOM01): The 10GE optical modules are fully configured on optical interface boards. Number of 10GE optical modules = Number of QM1D00EXOU00 x 2

l

Configuration principle of the optical fibers (QW1P0FIBER00): Number of optical fibers = (Number of STM-1 optical ports + Number of GE optical ports + Number of 10GE optical ports) x 2

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l


Configuration principle of the installation material suite (QW1P0000IM00): One installation material suite is configured for each BSC6910 cabinet (WP1B4PBCBN00).

l

Configuration principle of the electronic documentation (QMAI00EDOC00): A set of electronic documentation is delivered with each BSC6910.

4.3 BSC6910 GU Product Configurations The following describes the hardware configuration principles of the BSC6910 GU: 1.

GSM boards and UMTS boards should not be configured in the same subrack.

2.

One to three GSM subracks can be configured. One to five UMTS subracks can be configured.

3.

The total number of GSM and UMTS subracks should be smaller than or equal to six.

4.

Number of cabinets = ROUNDUP[(Number of GSM subracks + Number of UMTS subracks)/3]. A maximum of two cabinets (excluding the cabinets housing TC subracks) can be configured.

5.

The GSM network does not support ATDM and has no BM/TC separated configuration mode.

6.

In GU mode, ENIUa boards processing the SA(Service Awareness) function are separately configured on the GSM and UMTS networks.

7.

One ESAUa board can be configured in the BSC6910 GU mode.

The preceding principles apply to BSC6910 GU deployment and capacity expansion. The procedure for configuring a newly deployed BSC6910 GU is as follows: Step 1 Obtain the GSM and UMTS network parameter values. Step 2 Perform dimensioning to obtain the GSM and UMTS network requirements respectively. Step 3 Calculate the UMTS configuration and GSM configuration based on the network requirements. ----End If the capacity required by the GSM configuration and UMTS configuration does not exceed the BSC6910 GU specifications (that is, the total number of GSM subracks and UMTS subrack does not exceed six), then configuration calculation is complete. If the total required capacity exceeds the maximum specifications of one BSC6910 GU or the number of slots required for the interface boards exceeds the limitation, an extra BSC6910 GU needs to be added.

4.4 Examples of Typical Configurations 4.4.1 BSC6910 UMTS Examples of Typical Configurations The procedure of typical configuration can be carried out as follow steps. Step 1 Requirement Input Issue 07 (2014-09-12)


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Operator provides the network requirement which should include the information as listed in below table. Table 4-20 Network specifications Parameter

Value

Total subscribers

800,000

Total NodeBs

600

Total cells

3000

Voice Traffic per CS voice sub in BH(Erlang )

0.02

CS voice call duration (sec.)

75

Handover times per CS call

8

CS Voice call per sub per BH

0.96

PS call per sub per BH

2

Proportion of SHO for CS call

0.3

Handover times per PS call

5

Mean holding time (MHT) in DCH/H/FACH state per PS call(sec)

52

Mean holding time (MHT) in PCH per PS call(sec)

0

PS channel switch times per PS call

3

Cell update times per PS call

3

Proportion of SHO for PS call

0.3

PS throughput (Including R99 and HSPA, UL+DL) per PS sub in BH (bps)

4500

NAS(Attach,Dettach, LAU, RAU) and SMS per sub per BH

3.6

Iub interface type

10GE

Iu/Iur interface type

10GE

Ratio of traffic over Iur interfaces to Iub interfaces

8%

Enable the SA (Service Awareness)

Yes

ESAUa for the Nastar

Yes

GPS support

Yes

Step 2 Calculate the capacity requirements. By dimension procedure, the requirement of operator can be described as following:

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l Total IuPS throughput requirement(based on sample input, the value is 3600Mbps) = Total Subscribers * PS throughput (Including R99 and HSPA, UL+DL) per PS sub in BH (bps) = 800,000*4500 bps= 3600Mbps l Total IuCS Erlang requirement (based on sample input, the value is 16,000Erl) = Total Subscribers * Voice Traffic per CS voice sub in BH(Erlang ) = 800,000 * 0.02=16000 l Total IuPS TEID requirement: (based on sample input, the value is 23111); = Total Subscribers * [Mean holding time (MHT) in DCH/H/FACH state per PS call(sec) + Mean holding time (MHT) in PCH per PS call(sec)] * PS call per sub per BH/3600 = 800,000 *(52 +0)*2/3600 = 23111 l Times of session setups and releases on the IuPS interface (based on the sample input, the value is 493 times per second) = Total Subscribers * [PS call per sub per BH*(1 + PS channel switch times per PS call * 0.5 + Cell update times per PS call * 0.5)]/3600 = 800,000 * [2*(1 +3*0.5 + 3*0.5 )]/3600 = 1778 l Total Iub PS throughput requirement(based on sample input, the value is 4680Mbps) = Total Subscribers * PS throughput (Including R99 and HSPA, UL+DL) per PS sub in BH (bps) * (1+ Proportion of SHO for PS call)= 800,000*4500*(1+0.3) bps= 4680Mbps l Total Iub CS Erlang requirement (based on sample input, the value is 20800Erl) = Total Subscribers * Voice Traffic per CS voice sub in BH(Erlang ) * (1+ Proportion of SHO for CS call)= 800,000 * 0.02*(1+0.3) =20,800 l Total BHCA requirement (based on sample input, the value is 2368000) = Total Subscribers * (CS Voice call per sub per BH + PS call per sub per BH ) = 800,000 * (0.96 + 2) = 2368000 l Total NodeB quantity requirement (based on sample input, the value is 600) = Total NodeBs=600 l Total Cell quantity requirement (based on sample input, the value is 3000) = Total Cells= 3,000 l Total Active users requirement (based on sample input, the value is 39,111) = Total Subscribers * [Mean holding time (MHT) in DCH/H/FACH state per PS call(sec) * PS call per sub per BH/3600 + Voice Traffic per CS voice sub in BH(Erlang )] = 800,000 * (52 * 2/3600 + 0.02) = 39,111 l Total Online users requirement (based on sample input, the value is 39,111) = Total Subscribers * {[Mean holding time (MHT) in DCH/H/FACH state per PS call(sec) + Mean holding time (MHT) in PCH state per PS call(sec)] * PS call per sub per BH/3600 + Voice Traffic per CS voice sub in BH(Erlang)} = 800,000 *[(52+0) * 2/3600 + 0.02] = 39111 l Total Iub CID/UDP requirement(based on sample input, the value is 124800); = Total Subscribers * {Mean holding time (MHT) in DCH/H/FACH state per PS call(sec) * PS call per sub per BH/3600 * [1 +2*(1+Proportion of SHO for PS call)] + Voice Traffic per CS voice sub in BH(Erlang ) * 2 * (1+ Proportion of SHO for CS call)} = 800,000 * {52 * 2/3600*[1 + 2 *(1+0.3)] + 0.02*2*(1+0.3) } = 124,800 l Under this traffic model, the BHCA supported by each EGPUa CP only board is 107,418: CP Load per subscriber (unit: CPU usage) = [CS Voice call per sub per BH * (W1 + Handover times per CS call*W2) + PS call per sub per BH * (w3 + PS channel switch times per PS Issue 07 (2014-09-12)


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call*w7 + Cell update times per PS call*w8 + Handover times per PS call* w6) + NAS (Attach,Dettach, LAU, RAU) and SMS per sub per BH* w9]/3600 =14.96%/3600 = 0.0042% Subscriber number supported by each EGPUa CP only board = (70%-10%)*14/ CP Load per subscriber = (70%-10%)*14/0.0042% = 200,000 BHCA capacity supported by each EGPUa CP only board = Subscriber number supported by each EGPUa CP only board * (CS Voice call per sub per BH + PS call per sub per BH) = 200,000*(0.96+ 2 ) = 592,000. l Under this traffic model, the real PS throughput capacity supported by each EGPUa UP board is 1283Mbps PS RAB mean data rate (UL+DL) (kbps) = [PS throughput (Including R99 and HSPA, UL +DL) per PS sub in BH (bps) * 3600/1000] /[PS call per sub per BH * Mean holding time (MHT) in DCH/H/FACH state per PS call(sec)]= 4,500*3600/1000/(2*52)=155.8 155.8kbps ranges in [128, 196], PS Throughput Capacity per EGPUa(Mbps) = 1120 + (PS RAB Mean data rate - 128) * 5.88 = 1120+(155.8-128)*5.88 = 1283 Mbps. Step 3 Hardware Configuration and Capacity License Configurations (Using HW6910 R15 Hardware) 1.

Number of EGPUa boards required for the user plane Item

Description


Iub PS throughput


a' = Total Iub PS throughput requirement/ Real PS throughput capacity supported by each EGPUa UP board = 4680/1283=3.65

Iub CS traffic


b' = Total Iub CS Erlang requirement / Traffic (Erl) supported by each EGPUa UP Only board = 20,800/10,050 = 2.07

Active users

Number of active users supported by the Iub interface

n' = Total Active users requirement/ Number of active users supported by each EGPUa UP Only board = 39,111/28,000 = 1.40

Cell quantity


c' = Total Cell quantity requirement / Number of cells supported by each EGPUa UP Only board = 3000/1400 = 2.14

N_EGPUa_UP = Max(a'+ b', c', n')=Max(3.65+ 2.07, 1.40, 2.14) = 5.72 The number of licenses required for "RNC Throughput HW Capacity License (per 50 Mbit/ s)" is calculated as follows: N_ EGPUa_Iub_License = ROUNDUP[(Total Iub PS Throughput requirement + Total Iub CS Erlang requirement*12.2*2/1000) / 50 ] = ROUNDUP[(4680(Mbps)+20,800(Erlang)*12.2(kbps)*2/1000) / 50Mbps] = 104 2. Issue 07 (2014-09-12)

Number of EGPUa boards required for the control plane Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd.

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Item

Description


BHCA requirement

BHCA required by the network

Calculate the BHCA capacity of each EGPUa board in this traffic model b' = Total BHCA requirement / BHCA capacity supported by each EGPUa CP only board = 2,368,000/ 592,000 = 4

Active users

Number of active users supported on the control plane

n' =Total Active users requirement / Number of active users supported by each EGPUa CP Only board =39,111/35,000 = 1.12

Online Users

Number of online users supported on the control plane

m' = Total Online users requirement / Number of online users supported by each EGPUa CP Only board =39,111/70,000 = 0.56

NodeB quantity


nb' = Total NodeB quantity requirement / Number of NodeBs supported by each EGPUa CP Only board = 600/700 = 0.86

Cell quantity


c' = Total Cell quantity requirement / Number of Cells supported by each EGPUa CP Only board = 3000/1400 = 2.14

N_EGPUa_CP = max(b', n', m', nb', c') = max(4, 1.12, 0.56, 0.86, 2.14 ) = 4 The number of licenses required for "RNC Active User HW Capacity License" is calculated as follows: N_EGPUa_ ActiveUser_License = ROUNDUP(39,111/1000) = 40 One EGPUa board can be used on the CP and UP at one time. The EGPUa board is in N +1 backup mode. In this case, N_EGPUa = ROUNDUP(N_EGPUa_CP + N_EGPUa_UP) +1 = ROUNDUP(5.72+4) + 1 = 11 NOTE

N_EGPUa does not include the fixed N_EGPUa boards for resource management.

3.

Number of ENIUa and corresponding Hardware license The ENIUa board is in N+1 backup mode.

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N_ ENIUa = ROUNDUP(4680/8000) + 1 = 2 The number of licenses required for " Network Intelligence Throughput " is calculated as follows: N_Network_Intelligence_Throughput = ROUNDUP(4680 / 50 ) = 94 NOTE

Only the corresponding optional features are configured, this item is valid. Or else N_ ENIUa = 0 and N_Network_Intelligence_Throughput = 0.

4.

Number of required EXOUa boards

Iub

Item

Value


10GE Optical (IP)

Iub PS throughput

4680 Mbps

Calculation of Board Quantity

Real capacity for PS throughput of EXOUa in Iub interface(Gbps)= Min[Transmission packet length of Iub interface (Byte) * 8 * 8400000 * 80%/1,000,000,000, 10], or, useing the default recommended value: 8(Gbps). If using the default recommended value 8 (Gbps) as the specification. ba' = Total Iub PS throughput requirement / Real capacity for PS throughput of EXOUa in Iub interface = 4680/1000/8 = 0.59

IuCS

IuPS

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Iub CS traffic

20800

bb' = Total Iub CS Erlang requirement /Traffic (Erl) supported by each EXOUa board = 20,800/ 75,000 = 0.28

NodeB quantity

600

bn' = Total NodeB quantity requirement / Number of NodeBs supported by each EXOUa board = 600/1500 = 0.4

Iub active users (CID/UDP)

124800

an' = Total Iub CID/UDP requirement / Iub UDP number supported by each EXOUa board =124,800/500,000 = 0.25

Iu-CS transmission type

10GE Optical (IP)

Iu-CS traffic

16000

Iu-PS transmission type

10GE Optical (IP)

cb' = Total IuCS Erlang requirement/Traffic (Erl) supported by each EXOUa board = 16,000/75,000 = 0.21


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Item

Value

Calculation of Board Quantity

Iu-PS throughput

3600 Mbps

Real capacity for PS throughput of EXOUa in IuPS interface(Gbps)= Min(transmission packet length of IuPS interface (Byte) * 8 * 8400000 * 80%/1000000000, 10), or, useing the default recommended value: 10(Gbps). If using the default recommended value 10 (Gbps) as the specification. pb' = Total Iub PS throughput requirement / Real capacity for PS throughput of EXOUa in Iub interface = 3600/1000/10 = 0.36

Iu-PS online users

23111

pu' = Total IuPS TEID requirement / IuPS TEID number supported by each EXOUa board = 23,111/500,000 =0.05

Iu-PS session setup and release

1778

ps' = Times of session setups and releases on the IuPS interface / IuPS Setup&Reconfigure Sessions number supported by each EXOUa board = 1778/50,000 = 0.04

In view of the that Iub, Iu-CS, and Iu-PS interface boards are configured separately and are in N+1 backup mode, the number of required interface boards is as follows: (1)N_IUB_IF = ROUNDUP[Max(ba'+bb', bn', bu')] +1 = ROUNDUP[Max(0.59+0.28, 0.4, 0.25)] + 1 = 2 (2)N_IUCSIUR_IF = ROUNDUP( [cb'+ 8%*( ba'+ bb')] + 1= ROUNDUP[0.21 + 0.08* (0.84 + 0.28)] + 1 = 2 (3)N_IUPS_IF = ROUNDUP[Max(pb', pu', ps')] +1= ROUNDUP[Max(0.36, 0.05, 0.04)] +1=2 N_EXOUa = N_IUB_IF + N_IUCSIUR_IF + N_IUPS_IF = 6 5.

Number of ESAUa (QM1D00ESAU00) The number of ESAUa boards is deermined by the OSS feature. The default configuration numer of ESAUa board is 1 in UO mode and GU mode for EBC. Slots 1, 2, 3, and 4 in the MPS are reserved for two ESAUa boards.

6.

Number of GCGa boards (WP1D000GCG01): N_GCGa (pair) = 1

7.

Number of required EPS (QM1P00UEPS01) The number of fixed slots in MPS is 14, includes 4 slots for 1 pair of EOMUa, 2 slots for GCGa, 4 slots reserved for ESAUa, 2 slots for SCUb, 2 slots for EGPUa(RMP). The remained 14 slots can be used for EGPUa(CP or UP) and EXOUa. Number of EPS = ROUNDUP [(N_EGPUa(11)+ N_EXOUa(6)+ E_NIUa(2) - 14) /26 ] = 1

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Number of required cabinets (WP1B4PBCBN00) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd.

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Number of cabinets = ROUNDUP[(MPS number+ Number of required EPS)/3] = ROUNDUP(2/3, 0) =1. In summary, the following table lists the configurations that can meet network requirements. Item

Name

For Short

Part Number

Qua ntit y

1

Cabinet

N/A

WP1B4PBCBN00

1

2

Main processing subrack

MPS

QM1P00UMPS01

1

3

Extended processing subrack

EPS

QM1P00UEPS01

1

4

GE Switching and Control Unit

SCUb

WP1D000SCU01

4

5


EOMUa

QM1D00EOMU00

2

6

Clock board

GCGa

WP1D000GCG01

2

7

Evolved General Processing Unit for User Plane

EGPUa

QM1D00EGPU00

11

8

RNC Throughput Hardware Capacity (per 50Mbps)

QM1SRTHWCL00

103

9

RNC Active User Hardware Capacity (per 1000 Active Users)

QM1SRAUHCL00

40

10


EXOUa

QM1D00EXOU00

6

11


ENIUa

QM1D00ENIU00

2

13


ESAUa

QM1D00ESAU00

1

14

Evolved Network Intelligence Processing Throughput (per 50Mbps)

QM1S00ENIU00

94

----End

4.4.2 BSC6910 GSM Examples of Typical Configurations The procedure of typical configuration can be carried out as follow steps.

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Step 1 Requirement Input Operator provides the network requirement which should include the information as listed in below figure.

Here give a sample, the input information is as follows:

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Parameter

Value

voice traffic /sub/BH (Erlang)

0.02

voice call duration (seconds)

60

SMS/LA setup duration(seconds)

0

percent of Mobile originated calls

50%

percent of Mobile terminated calls

50%

average LUs/sub/BH

1.2

average IMSI Attach/sub/BH

0.15

average IMSI Detach/sub/BH

0.15

average MOCs/sub/BH

0.6


60



Parameter

Value

average MTCs/sub/BH

0.6

MR report/sub/BH

144

average MO-SMSs /sub/BH

0.6

average MT-SMSs /sub/BH

1

average intra-BSC HOs /sub/BH

1.1

average inter-BSC HOs /sub/BH

0.1

paging retransfer /sub/BH

0.56

Grade of Service (GoS) on Um interface

0.01

Grade of Service (GoS) on A interface

0.001

percent of HR (percent of Um interface resources occupied by HR voice call)

50%

Step 2 Dimension The following figure shows the dimensions that are used for calculating the configurations.

Step 3 Network capacity Get the Network Capacity requirement to calculate the hardware requirement.

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Item

Name

Configuration Before Capacity Expansion

1

Subracks (MPS and EPS)

B1

2

Evolved General Processing Unit (EGPUa) or Evolved Extensible Processing Unit (EXPUa)

B2


61



Item

Name


3

Interface board

B3

4

Cabinet

B4

----End

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5

5 Expansion and Upgrade Configurations

Expansion and Upgrade Configurations

5.1 BSC6910 UMTS Expansion and Upgrade Configurations The service processing capability of the BSC6910 improves by adding the hardware. Capacity expansion follows the minimum hardware configuration principle

5.1.1 Hardware Expansion and Upgrade Configurations The following table lists the boards of the BSC6910 V100R015C00. Table 5-1 Boards of the BSC6910 V100R015C00 Hardware Version

Boards

HW6910 R15

SCUb, GCGa, GCUa, AOUc, UOIc, FG2c, GOUc, EGPUa, EXOUa, EOMUa, ESAUa, ENIUa

The following table lists the list of the hardware components to be added of HW6910 RAN15.0 hardware. Table 5-2 List of the hardware components to be added (HW6910 RAN15.0 hardware)

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Item

Name


Configuration After Capacity Expansion

Added Quantity

1

Cabinet

A1

B1

B1 – A1

2

MPS

A2

B2

B2 – A2

3

EPS

A3

B3

B3 – A3

4

Clock board

A4

B4

B4 – A4


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Item

Name



Added Quantity

5

Evolved General Processing Unit (for Control Plane)

A5

B5

B5 – A5

6

Evolved General Processing Unit for User Plane

A6

B6

B6 – A6

7

Interface boards

A7

B7

B7 – A7

NOTE

A1 through A7 and B1 through B7 indicate the number of components.

5.1.2 Examples of Hardware Expansion Before capacity expansion, the network configurations are as follows: l

Traffic: 10,050 Erl

l

Transmission rate: 2000 Mbit/s (based on the uplink and downlink transmission rates 64 kbit/s and 384 kbit/s)

l

BHCA: 1,668,000 (using the Smartphone traffic model)

l

Number of NodeBs: 700

l

Number of cells: 1400

l

IP transmission (10GE optical port) over the Iub, Iu-CS, and Iu-PS interfaces

l

Iub, Iu-CS, and Iu-PS interface boards working in 1+1 active/standby mode

After capacity expansion, the network configurations are as follows: l

Traffic: 20,100 Erl

l

Transmission rate: 4000 Mbit/s (based on the uplink and downlink transmission rates 64 kbit/s and 384 kbit/s)

l

BHCA: 3,336,000 (using the Smartphone traffic model)

l

Number of NodeBs: 1400

l

Number of cells: 2800

l

IP transmission (10GE optical port) over the Iub, Iu-CS, and Iu-PS interfaces

l

Iub, Iu-CS, and Iu-PS interface boards working in 1+1 active/standby mode

The following table lists the hardware configurations before and after capacity expansion. The numbers of hardware components to be added are calculated according to the procedure described in section 4.1.2 Subrack Configurations.

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Table 5-3 Capacity expansion from configuration 1 to configuration 2 Configurati on

Number of Cabinet s

Number of Subrack s

Number of EGPUa boards for the User Plane

Number of EGPUa Boards for the Control Plane

Number of EXOUa Boards

Configuration 1 (before capacity expansion)

1

1

2

1

6

Configuration 2 (after capacity expansion)

1

1

4

2

6

Number of components to be added

0

0

2

1

0

The slot configurations are as follows: NOTE

It is recommended that boards be evenly distributed in every subrack, following the related configuration principles.

5.2 BSC6910 GSM Expansion and Upgrade Configurations Capacity expansion can be performed through the following methods: l

Improving the service processing capability of the system through hardware expansion

l

Improving the service processing capability of the system by configuring capacity licenses

The two methods can be adopted separately or together according to the requirements of network services. Follow the minimum hardware configuration principle during capacity expansion.

5.2.1 Precautions The BSC6900 cannot be upgraded to the BSC6910 by upgrading the software, but can be upgraded by migrating the hardware. If the BSC6900 is upgraded to BSC6910, the BSC license of BSC6900 can be used for the BSC 6910 after the license is quoted again. However the BTS Issue 07 (2014-09-12)


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license of the BSC6900 that has been quoted can be directly used for the BSC6910 by using license adjusting tools. The BSC6910 supports only the SCUb, EOMUa, ESAUa, GCUa, GCGa, EGPUa/EXPUa, FG2c, GOUc, EXOUa, and POUc boards. The EGPUa/EXPUa board used in the BSC6910 replaces the XPUb, DPUf (for A interfaces using IP transmission), and DPUg boards used in BSC6900. In the BSC6910 V100R015C00, the Ater and Pb interfaces are removed from the transmission network. The Abis interface supports IP and TDM transmission modes, whereas other external interfaces only support IP transmission mode.

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Part Number

Name

Remarks

WP1D000F G201

FG2c

1. Number of required A interface boards = 2 x ROUNDUP (((MaxACICPerBSCIP – Number of FG2c boards functioning as the A interface board/2 x ACICPerFG2c)/ ACICPerFG2c), 0) NOTE The number of required A interface boards depends on the number of ports and the number of equivalent CIC circuits on the A interface. In capacity expansion scenarios, the capacity specifications and number of ports supported by the existing FG2c boards must be subtracted from the total required capacity.

2. Number of required Abis interface boards = 2 x ROUNDUP ((MAX (ROUNDUP (AbisIPFEGENo/GEPortPerFG2c, 0) x GEPortPerFG2c-Number of FG2c boards functioning as the Abis interface board/2 x GEPortPerFG2c)/GEPortPerFG2c, (TRXNoFEGE -Number of FG2c boards functioning as the Abis interface board/2 x TRXNoPerFG2c)/ TRXNoPerFG2c), 0) NOTE When the Abis interface uses IP transmission, the Abis interface boards must be configured. The number of required Abis interface boards depends on the number of FE/GE ports and the number of TRXs. In capacity expansion scenarios, the originally supported TRXs must be subtracted from the total required TRXs. In addition, the number of ports supported before capacity expansion should also be considered.

3. Number of required Gb interface boards = 2 x ROUNDUP ((MAX(ROUNDUP(MAX(GbIPFEGENo/ GEPortPerFG2c, 0) x GEPortPerFG2c –Number of FG2c boards functioning as the Gb interface board/2 x GEPortPerFG2c)/GEPortPerFG2c), (GbIPTputPerBSCNumber of FG2c boards functioning as the Gb interface board/2 x (GbTputPerFG2c/1024))/GbTputPerFG2c/1024), 0) NOTE When the built-in PCU is used, Gb interface boards must be configured. The number of required Gb interface boards depends on the number of ports and the traffic on the Gb interface. The originally supported traffic must be subtracted from the total supported traffic.

4. The number of FG2c boards to be configured is equal to the total number of all the preceding boards. WP1D000 GOU01

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GOUc

The GOUc has different interface from the FG2c but has the same service capacity, number of GE ports, GE port specifications, and configuration formulas.


67



Part Number

Name

Remarks

QM1D00E XOU00

EXOUa

EXOUa functioning as the interface board before capacity expansion 1. Number of required A interface boards = 2 x ROUNDUP (MAX ((TotalAIP10GENo – Number of EXOUa boards functioning as A interface board/2 x 10GEPortPerEXOUa)/ 10GEPortPerEXOUa, (TotalAIPCIC – Number of EXOUa boards functioning as A interface board/2 x AIPCICPerEXOUa)/AIPCICPerEXOUa), 0) NOTE The quantity depends on the number of ports and the number of equivalent CIC circuits on the A interface. In capacity expansion scenarios, the capacity specifications and number of ports supported by the existing EXOUa boards must be subtracted from the total required capacity.

2. Number of required Abis interface boards = 2 x ROUNDUP (MAX ((TotalAbisIP10GENo – Number of EXOUa boards functioning as Abis interface board/2 x 10GEPortPerEXOUa)/10GEPortPerEXOUa, (TotalTRXNo10GE – Number of EXOUa boards functioning as Abis interface board/2 x TRXNoPerEXOUa)/ TRXNoPerEXOUa), 0) NOTE The quantity depends on the number of ports and the number of TRXs on the Abis interface. In capacity expansion scenarios, the originally supported TRXs must be subtracted from the total required TRXs. In addition, the number of ports supported before capacity expansion should also be considered.

3. Number of required Gb interface boards = 2 x ROUNDUP (MAX ((TotalGbIP10GENo – Number of EXOUa boards functioning as Gb interface board/2 x 10GEPortPerEXOUa)/ 10GEPortPerEXOUa, (TotalGbIPTput – Number of EXOUa boards functioning as Gb interface board/2 x GbTputPerEXOUa)/GbTputPerEXOUa), 0) NOTE The quantity depends on the number of ports and the traffic on the Gb interface. The originally supported traffic must be subtracted from the total supported traffic.

4. The number of EXOUa boards to be configured is equal to the total number of all the preceding boards. FG2c or GOUc functioning as the interface board before capacity expansion (The calculation principle for GOUc is the same as that for FG2c.) 1. Number of required A interface boards = 2 x ROUNDUP (MAX (((TotalAIPCIC – Number of FG2c boards functioning as A interface board/2 x AIPCICPerFG2c)/ AIPCICPerEXOUa), 0)

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Part Number

Name


Remarks NOTE The quantity depends on the number of ports and the number of equivalent CIC circuits on the A interface. In capacity expansion scenarios, the capacity specifications and number of ports supported by the existing FG2c or GOUc boards must be subtracted from the total required capacity.

2. Number of required Abis interface boards = 2 x ROUNDUP (MAX ((TotalTRXNo – Number of FG2c boards functioning as Abis interface board/2 x TRXNoPerFG2c)/ TRXNoPerEXOUa), 0) NOTE The quantity depends on the number of ports and the number of TRXs on the Abis interface. In capacity expansion scenarios, the originally supported TRXs must be subtracted from the total required TRXs.

3. Number of required Gb interface boards = 2 x ROUNDUP (MAX ((TotalGbIPTput – Number of FG2c boards functioning as Gb interface board/2 x GbTputPerFG2c)/ GbTputPerEXOUa), 0) NOTE The quantity depends on the number of ports and the traffic on the Gb interface. The originally supported traffic must be subtracted from the total supported traffic.

4. The number of EXOUa boards to be configured is equal to the total number of all the preceding boards. WP1D000P OU01

POUc

1. Number of required Abis interface boards (TDM) = 2 x ROUNDUP (MAX ((TotalAbisTDMSTM1No – Number of POUc boards functioning as Abis interface board/2 x STM1PortPerPOUc)/ STM1PortPerPOUc, (TotalTRXNo – Number of POUc boards functioning as Abis interface board/2 x TRXNoPerPOUc)/TRXNoPerPOUc), 0) 2. Number of required Abis interface boards (IP) =2*ROUNDUP ( MAX( (TotalAbisIPSTM1No - Number of POUc boards functioning as Abis interface board /2* STM1PortPerPOUc)/ STM1PortPerPOUc, (TotalTRXNo- Number of POUc boards functioning as Abis interface board /2* TRXPerPOUcIP)/ TRXPerPOUcIP,0) NOTE The quantity depends on the number of ports and the number of TRXs on the Abis interface. Each BTS must be configured with at least one E1 port by default. If the BTSs are cascaded on the live network, only the BTS at the highest level is connected to an E1 port on the BSC.

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Part Number

Name

Remarks

QM1D00E GPU00

EGPUa

1. Calculating the number of required EGPUa based on the number of TRXs: Number of required EGPUa boards = ROUNDUP (TotalTRXNo/TRXNoPerEGPUa, 0) – Number of existing EGPUa boards 2. Calculating the number of required EGPUa based on the traffic in the CS services: Number of required EGPUa boards = ROUNDUP (TotalVoiceErl/VoiceErlPerEGPUa, 0) – Number of existing EGPUa boards 3. Calculating the number of required EGPUa based on the number of PDCHs in the PS services: Number of required EGPUa boards = ROUNDUP (TotalPDCH/PDCHPerEGPUa, 0) – Number of existing EGPUa boards 4. On BHCA The number of required EGPUa boards = ROUNDUP (TotalBHCA/BHCAPerEGPUa,0) – Existing number of EGPUa boards The value of TotalBHCA depends on the number of users and traffic model. 5. Based on the number of cells The number of required EGPUa boards = ROUNDUP (TotalCellNo / CellNoPerEGPUa,0) –Existing number of EGPUa boards 6. Based on the number of sites The number of required EGPUa boards = ROUNDUP (TotalBTSNo / BTSNoPerEGPUa,0) –Existing number of EGPUa boards 7. The number of EGPUa boards to be configured is equal to the maximum value of all the preceding boards.

QM1D00E XPU00

EXPUa

Same as EGPUa

GMIPEPR ACK00

GEPS

Number of processing subracks = ROUNDUP(MAX(Total number of interface boards – 10/14, (Total number of interface boards + Total number of user plane boards – 18)/24, 0))

QM1B0PB CBN00

Cabinet

1

5.2.2 Hardware Capacity License Expansion Before hardware capacity expansion, sufficient hardware capacity licenses for "BSC HW TRX Capacity (per TRX)" and "BSC HW PDCH Capacity (per PDCH)" must be obtained. The Issue 07 (2014-09-12)


70



number of licenses to be increased depends on the difference in TRX or PDCH capacity before and after capacity expansion.

5.2.3 Examples of Hardware Expansion l

Total Replacement An operator may want to increase equipment integration and achieve a larger capacity with existing cabinets and subracks. In this case, a total replacement is recommended. In a total replacement, the capacity is considered first. The Unistar quotation template is used to work out a BSC equipment list based on the specifications of the new hardware version. The boards required for the capacity expansion are determined through a comparison with existing boards that can be reused. Boards that cannot be reused must be removed. The procedure for a total replacement is as follows:

Step 1 Fill in the Unistar calculation table and calculate the configuration required after the capacity expansion. Step 2 Record the board and equipment configurations before the capacity expansion. Step 3 The components required in the capacity expansion are the components after the capacity expansion minus those before the capacity expansion. Item

Name



Number of Components to Be Added

1

Subracks (MPS, EPS)

A1

B1

B1 – A1

4

Evolved General Processing Unit (600 TRXs)

A2

B2

B2 – A2

5

Interface boards

A3

B3

B3 – A3

6

Cabinets

A4

B4

B4 – A4

----End l

Incremental Algorithm If an operator wants to keep the original equipment without large-scale modifications to the legacy network, new boards are used only for newly added sites and carriers. If the new quotation template does not support mixed insertion of boards and the frontline personnel want to simplify operations, use the original quotation template and the incremental algorithm. The core idea is to reuse as much legacy equipment as possible. The purpose of mixed insertion is to use boards of different specifications in the same logical or physical interface.

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The procedure for the incremental algorithm is as follows: Step 1 Fill in the Unistar calculation table with the quotation parameters of the new hardware version after the capacity expansion. By doing this, you get the configuration required after the capacity expansion. In the Dimension Calculator window, you can view the capacity after the capacity expansion. Step 2 Fill in the Unistar calculation table with the quotation parameters of the original hardware version before the capacity expansion. By doing this, you can obtain the configurations of each interface board before the capacity expansion. In the Dimension Calculator window, you can view the capacity before the capacity expansion. Step 3 Subtract the hardware support capability before the capacity expansion from the capacity required after the expansion. By doing this, you can obtain the capacity support capability required for the expansion. NOTE

Generally, the traffic volume over the Gb interface is light. One pair of boards can cope even during a capacity expansion. Therefore, set the capacity increase on the Gb interface to 0.

Item

Name

Configuration Required After the Capacity Expansion

Maximum Support Capability Before the Capacity Expansion

Increased Support Capability Required by the Capacity Expansion

1

TRX support capability

A1

B1

B1 - A1

2

Abis QTY

A2

B2

B2 - A2

3

A CIC QTY

A3

B3

B3 - A3

4

BHCA

A5

B5

B5 - A5

5

Gb interface traffic

A6

A6

B6 - A6

...

...

...

...

Step 4 Determine the boards required by the capacity expansion. Process the initial result about the required hardware based on the configuration principle. Step 5 Calculate whether additional cabinets, subracks, and auxiliary materials are required for the capacity expansion. ----End

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6 Appendix

6

Appendix

6.1 Traffic Model 6.1.1 UMTS Traffic Model The BSC6910 UMTS supports the flexible configuration of control plane and user plane data in different scenarios. In each scenario, the capacity configured for the BSC6910 UMTS depends on actual traffic models. There are 2 traffic models for the BSC6910 UMTS: l

High-PS traffic model This model is applicable in scenarios where subscribers use much more data services than voice services. In this model, the average PS throughput per user is high.

l

Traffic model for mart phones In this model, control plane signaling is frequently exchanged and user plane data is transmitted mainly through small packets.

The capacity under UMTS BSC6910 typical configurations in the high-PS traffic model, and smartphones traffic model are described as follows. 1.

High-PS Traffic Model

Table 6-1 High-PS traffic model for the BSC6910 UMTS (per user in busy hours)

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Item

Specification

Description

CS voice traffic volume

3 mE

AMR speech service, 0.144 BHCA

CS data traffic volume

0.2 mE

UL 64 kbit/s/DL 64 kbit/s CS data service, 0.0053 BHCA

PS throughput

43,500 bit/s

UL 64 kbit/s/DL 384 kbit/s, 3 BHCA


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6 Appendix

Item

Specification

Description

Proportion of soft handovers

30%

Proportion of calls using more than two radio links simultaneously to all calls

Handover times per CS call (SHO) (times/call)

8

Average number of handovers per CS call

Handover times per PS call (SHO) (times/call)

5

Average number of handovers per PS call

NAS signaling per subscriber per BH (times)

3.6

Including all CN-UE signaling: LA update, RA update, IMSI attach/detach, and GPRS attach/ detach

Iur traffic

8%

The amount of Iub traffic(in percent) that is directed to another RNC

The following table lists the capacity of the BSC6910 UMTS in typical configurations (one cabinet that has three subracks installed and 2 cabinets with six subracks installed). In this table, the BSC6910 UMTS uses the high-PS traffic model. Table 6-2 Capacity of the BSC6910 UMTS in typical High-PS configurations Subscriber s Supported

CS Voice Service Capacity (Erlang)

PS Service Capacity (Iub UL +DL) (Mbit/s)

BHCA (k)

Active Users

Online Users

Subrack Combination

1,380,000

5,700

59,500

4,300

210,000

420,000

1 MPS + 2 EPSs

2,760,000

11,400

120,000

8,600

420,000

840,000

1 MPS + 5 EPSs

NOTE

l The CS voice service capacity, PS service capacity, and BHCA can reach the maximum at the same time. l The number of on-net subscribers indicates the number of users who have accessed a UMTS network within a busy hour. l The number of active users indicates the total number of users who are in the CELL_DCH and CELL_FACH state. l The number of online users indicates the total number of users who are in the CELL_DCH, CELL_FACH, CELL_PCH, and URA_PCH state.

2.

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Smartphones Traffic Model


74


6 Appendix

Table 6-3 Smartphones traffic model for the BSC6910 UMTS Item

Specificatio n

Description

CS voice traffic volume

30 mE

AMR speech service, 0.7 CS BHCA per subscriber

PS throughput

1600 bit/s

8 PS BHCA per subscriber

Proportion of soft handovers

34%

Proportion of calls using more two radio links simultaneously to all calls

Handover times per CS call (SHO) (times/call)

4

Average number of handovers per CS call

Handover times per PS call (SHO) (times/call)

1

Average number of handovers per PS call

PS channel switch times per PS call

2.3

Including all switch between different connected RRC states and channels per PS call

NAS signaling per subscriber per BH (times)

2.8

Including all CN-UE signaling: LA update, RA update, IMSI attach/detach, GPRS attach/ detach, and SMS

Iur traffic

8%

The amount of Iub traffic(in percent) that is directed to another RNC

The following table lists the capacity of the BSC6910 UMTS in typical configurations. In this table, the BSC6910 UMTS uses the traffic model for smart phones. Table 6-4 Capacity of the BSC6910 UMTS in typical smartphone configurations

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Subscriber s Supported

CS Voice Service Capacity (Erlang)

PS Service Capacity (Iub UL +DL) (Mbit/s)

BHCA (k)

Active Users

Online Users

Subrac k Combi nation

3,600,000

122,000

5800

32,000

665,000

1,000,000

1MPS +2EPS

7,490,000

250,000

11,900

64,000

1,000,000

1,000,000

1MPS +5EPS


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6 Appendix

NOTE

l The CS voice service capacity, PS service capacity, and BHCA can reach the maximum at the same time. l The number of on-net subscribers indicates the number of users who have accessed a UMTS network within a busy hour. l The number of active users indicates the total number of users who are in the CELL_DCH and CELL_FACH state. l The number of online users indicates the total number of users who are in the CELL_DCH, CELL_FACH, CELL_PCH, and URA_PCH state.

6.1.2 GSM Traffic Model Table 6-5 GSM Traffic Model

Issue 07 (2014-09-12)

Parameter

Value

voice traffic /sub/BH (Erlang)

0.02

voice call duration (seconds)

60

percent of Mobile originated calls

50%

percent of Mobile terminated calls

50%

average LUs/sub/BH

1.2

average IMSI Attach/sub/BH

0.15

average IMSI Detach/sub/BH

0.15

average MOCs/sub/BH

0.6

average MTCs/sub/BH

0.6

MR report/sub/BH

144

average MO-SMSs /sub/BH

0.6

average MT-SMSs /sub/BH

1

average intra-BSC HOs /sub/BH

1.1

average inter-BSC HOs /sub/BH

0.1

paging retransfer /sub/BH

0.56

Grade of Service (GoS) on Um interface

0.01

Grade of Service (GoS) on A interface

0.001

percent of HR (percent of Um interface resources occupied by HR voice call)

50%

Uplink TBF Est & Rel / Second/TRX

1.75

Downlink TBD Est & Rel/Second/TRX

0.9


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6 Appendix

Parameter

Value

PS Paging / Sub/BH

1.25

1.

Table 6-6 provides the capacity of a BSC6910 GSM in Abis over TDM, A over TDM, and GB over IP modes. Table 6-6 Capacity of a BSC6910 GSM in Abis over TDM, A over TDM modes

2.

Specifications

1 MPS

1 MPS+1 EPS

1 MPS+2 EPSs

Maximum number of cabinets

1

1

1

Maximum number of TRXs

6000

15,000

24,000

Maximum number of equivalent BHCA (k)

13,000

32,500

52,000

Maximum traffic volume (Erlang)

37,500

93,750

150,000

Maximum number of active PDCHs (MCS-9)

24,000

60,000

96,000

Table 6-7 provides the capacity of a BSC6910 GSM in Abis over TDM and A over IP modes. Table 6-7 Capacity of a BSC6910 GSM in Abis over TDM and A over IP modes Specifications

1 MPS

1 MPS+1 EPS

1 MPS+2 EPSs

Maximum number of cabinets

1

1

1

Maximum number of TRXs

3000

6500

10,000

Maximum number of equivalent BHCA (k)

6500

14,085

21,667

Maximum traffic volume (Erlang)

18,750

40,625

62,500

Maximum number of active PDCHs (MCS-9)

12,000

26,000

40,000

6.2 Hardware Specifications 6.2.1 UMTS Hardware Specifications The following table lists the UMTS hardware specifications. Issue 07 (2014-09-12)


77


6 Appendix

Table 6-8 UMTS Hardware Specifications

Issue 07 (2014-09-12)

Parameter Name

Meaning

Specifica tions

Board

NodebPerEGPUa CP

Number of NodeBs supported by each EGPUa CP Only board

700

EGPUa CP Only

CellPerEGPUaCP

Number of cells supported by each EGPUa CP Only board

1400

EGPUa CP Only

CellPerEGPUaUP

Number of cells supported by each EGPUa UP Only board

1400

EGPUa UP Only

CellPerEGPUa

Number of cells supported by each EGPUa board when EGPUa works as both CP and UP (The ratio of CP of hardware is p%)

Min [1400*p, 1400*(1p)]

EGPUa

ActiveUserPerEG PUaCP

Number of active users supported by each EGPUa CP Only board

35,000

EGPUa CP Only

ActiveUserPerEG PUaUP

Number of active users supported by each EGPUa UP Only board

28000

EGPUa UP Only

ActiveUserPerEG PUa

Number of active users supported by each EGPUa board when EGPUa works as both CP and UP (The ratio of CP of hardware is p %)

Min [35000*p, 28000*(1p)]

EGPUa

OnlineUserPerEG PUaCP

Number of online users supported by each EGPUa CP Only board

70,000

EGPUa CP Only

OnlineUserPerEG PUaUP

Number of online users supported by each EGPUa UP Only board

70,000

EGPUa UP Only

OnlineUserPerEG PUa

Number of online users supported by each EGPUa board when EGPUa works as both CP and UP (The ratio of CP of hardware is p %)

Min [70000*p, 70000*(1p)]

EGPUa


78


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6 Appendix

Parameter Name

Meaning

Specifica tions

Board

BHCAPerEGPUa CP

BHCA supported by each EGPUa CP Only board

Under Huawei typical smartphon e traffic model, this specificati on is 1.668kk BHCA 1.668KK. The real capacity should be calculated under real network traffic model.

EGPUa CP Only

ErlPerEGPUaUP

Traffic (Erl) supported by each EGPUa UP Only board

10050

EGPUa UP Only


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6 Appendix

Parameter Name

Meaning

Specifica tions

Board

PsThtPerEGPUaU P

PS throughput (Mbit/s) supported by each EGPUa UP Only board

x=PS Rab mean data rate in active state;

EGPUa UP Only

y= PsThtPerE GPUaUP. If x in [0, 16], y=13.75* x If x in [16, 40], y=220 +16.67*x If x in [40, 64], y=620 +5.83*x If x in [64, 128], y=760 +5.63*x If x in [128, 196], y=1120 +5.88*x If x in [196, 448], y=1520 +1.9*x If x in [448, ∞], y=2000 BHCAPerEGPUa

Issue 07 (2014-09-12)

BHCA supported by each EGPUa board when EGPUa works as both CP and UP (The ratio of CP of hardware is p%)

BHCAPer EGPUaCP *p%


EGPUa

80


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6 Appendix

Parameter Name

Meaning

Specifica tions

Board

ErlPerEGPUa

Traffic (Erl) supported by each EGPUa board when EGPUa works as both CP and UP (The ratio of CP of hardware is p%, and the ratio of CS of UP hardware is q%)

ErlPerEG PUaUP* (1-p%)*q %

EGPUa

PsThtPerEGPUa

PS throughput (Mbit/s) supported by each EGPUa board when EGPUa works as both CP and UP (The ratio of CP of hardware is p %, and the ratio of CS of UP hardware is q%)

PsThtPerE GPUaUP* (1-p%)* (1-q%)

EGPUa

MaxInterSubrackSwitchSCUb

Inter-subrack switching capability (Gbit/s) of each pair of SCUb boards

40

SCUb

NodebPerGOUc/ NodebPerFG2c

Number of NodeBs supported by each GOUc or FG2c board

500

GOUc/FG2c

ErlPerGOUc/

18,000

GOUc/FG2c

ErlPerFG2c

Traffic (Erl) supported by each GOUc or FG2c board

IubUdpPerGOUc/ IubUdpPerFG2c

Iub UDP number supported by each GOUc/FG2c board

129,000

GOUc/FG2c

IuPSTeidPerGOU c/ IuPSTeidPerFG2c

IuPS TEID number supported by each GOUc/FG2c board

200,000

GOUc/FG2c

IuPSSessionsPerGOUc/ IuPSSessionsPerF G2c

IuPS Setup&Reconfigure Sessions number supported by each GOUc/FG2c board

5000

GOUc/FG2c

IubPsThrPerGOU c/ IubPsThrPerFG2c

PS DL and UL throughput (Mbit/ s) supported by the GOUc/FG2c board functioning as the Iub interface board

2600

GOUc/FG2c

IuPsThrPerGOUc/ IuPsThrPerFG2c

PS DL and UL throughput (Mbit/ s) supported by the GOUc/FG2c board functioning as the Iu interface board

3200

GOUc/FG2c

NodebPerEXOUa

Number of NodeBs supported by each EXOUa board

1500

EXOUa

ErlPerEXOUa

Traffic (Erl) supported by each EXOUa board

75,000

EXOUa


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6 Appendix

Parameter Name

Meaning

Specifica tions

Board

IubUdpPerEXOU a

Iub UDP number supported by each EXOUa board

1,000,000

EXOUa

IuPSTeidPerEXO Ua

IuPS TEID number supported by each EXOUa board

500,000

EXOUa

IuPSSessionsPerEXOUa

IuPS Setup&Reconfigure Sessions number supported by each EXOUa board

50,000

EXOUa

IubPsThrPerEXO Ua

PS DL and UL throughput (Gbit/ s) supported by the EXOUa board functioning as the Iub interface board

Min {Average transmissi on packet length of Iub interface * 8400000 *80%/ 10000000 00, 10}, or,

EXOUa

Using the default recommen ded value: 8 (Gbps) IuPsThrPerEXOU a

PS DL and UL throughput (Gbit/ s) supported by the EXOUa board functioning as the Iu interface board

Min {Average transmissi on packet length of IuPS interface * 8,400,000 *80%/ 10000000 00, 10}, or,

EXOUa

Using the default recommen ded value: 10(Gbps) NodebPerAOUc

Issue 07 (2014-09-12)

Number of NodeBs supported by each AOUc board

500


AOUc

82


Issue 07 (2014-09-12)

6 Appendix

Parameter Name

Meaning

Specifica tions

Board

ErlPerAOUc

Traffic (Erl) supported by each AOUc board

18,000

AOUc

IubUlPsThrPerAOUc

PS UL throughput (Mbit/s) supported by the AOUc board functioning as the Iub interface board

300

AOUc

IubDlPsThrPerAOUc

PS DL throughput (Mbit/s) supported by the AOUc board functioning as the Iub interface board

300

AOUc

IuUlDlPsThrPerAOUc

PS DL and UL throughput (Mbit/ s) supported by the AOUc board functioning as the Iu interface board

700

AOUc

NodebPerUOIc

Number of NodeBs supported by each UOIc board

500

UOIc

ErlPerUOIc

Traffic (Erl) supported by each UOIc board

18,000

UOIc

IubUlPsThrPerUO Ic

PS UL throughput (Mbit/s) supported by the UOIc board functioning as the Iub interface board

800

UOIc

IubDlPsThrPerUO Ic

PS DL throughput (Mbit/s) supported by the UOIc board functioning as the Iub interface board

800

UOIc

IubUlDlPsThrPerUOIc

PS DL and UL throughput (Mbit/ s) supported by the UOIc board functioning as the Iub interface board

1200

UOIc

PortNumGOUc/ PortNumFG2c

The port numbers supported by GOUc/FG2c

4

GOUc/FG2c

PortNumEXOUa

The port numbers supported by EXOUa

2

EXOUa

Stm1PortNumAO Uc

The STM-1 port numbers supported by AOUc

4

AOUc

Stm1PortNumUO Ic

The STM-1 port numbers supported by UOIc

8

UOIc


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6 Appendix

Parameter Name

Meaning

Specifica tions

Board

PsThtPerENIUa

PS throughput (Mbit/s) supported by each ENIUa board

8000

ENIUa

6.2.2 GSM Hardware Specifications l

Issue 07 (2014-09-12)

Board Specifications

Parameter Name

Meaning

Specifica tions

Board

TrxPerEGP Ua

Number of TRXs supported by each EGPUa/EXPUa board

1000

EGPUa/EXPUa

BHCAPer EGPUa

BHCA supported by each EGPUa/EXPUa board

2,200,000

EGPUa/EXPUa

ErlPerEGP Ua

Traffic (Erlang) supported by each EGPUa/ EXPUa board

6250

EGPUa/EXPUa

PDCHPerE GPUa

Number of PDCHs supported by each EGPUa/EXPUa board

3000

EGPUa/EXPUa

10GEPortP erEXOUa

Number of 10GE ports supported by the EXOUa board

2

EXOUa

TRXNoPer EXOUa

Number of TRXs supported by the EXOUa board over the Abis interface in IP transmission mode

8000

EXOUa

ACICPerE XOUa

Number of CICs supported by the EXOUa board over the A interface in IP transmission mode

75,000

EXOUa

GbTputPer EXOUa

Throughput (Mbit/s) supported by the EXOUa board over the Gb interface in IP transmission mode

8000

EXOUa

GEPortPer FG2c

Number of GE ports supported by the FG2c board

4

FG2c

FEPortPer FG2c

Number of FE ports supported by the FG2c board

12

FG2c

GEPortPer GOUc

Number of GE ports supported by the GOUc board

4

GOUc

GbTputPer FG2c

Throughput (Mbit/s) supported by the FG2c or GOUc board over the Gb interface in IP transmission mode

2000

FG2c/GOUc


84


6 Appendix

Parameter Name

Meaning

Specifica tions

Board

TRXNoPer FG2c

Number of TRXs supported by the FG2c or GOUc board over the Abis interface in IP transmission mode

2048

FG2c/GOUc

ACICPerF G2c

Number of CICs supported by the FG2c or GOUc board over the A interface in IP transmission mode

23,040

FG2c/GOUc

LogicalPor tPerFG2c

Number of logical ports supported by the FG2c or GOUc board in IP transmission mode

490

FG2c/GOUc

STM1Port PerPOUc

Number of STM-1 ports supported by the POUc board

4

POUc

TRXHRPe rPOUcTD M

Number of TRXs supported by the POUc board in TDM transmission mode

1024

POUc: TDM

TRXPerPO UcIP

Number of TRXs supported by the POUc board in IP transmission mode

2048

POUc: IP

MaxInterS ubrackIPS witch

Maximum switching capability between subracks of the BSC

40 Gbit/s

BSC

l

Board Usage Each type of board on the BSC6910 has its specifications, which are calculated by collectively considering the capacity on various aspects (including BHCA capacity, TRX capacity, CIC capacity, and bandwidth capacity). The specifications for a board indicate the capacity for a board running with long-term stability. When a board is processing services, its bandwidth capacity, service parsing and forwarding capacity, and signaling parsing and forwarding capacity must be taken into consideration. Therefore, Huawei uses the board usage to represent the board capacity. Board usage = Traffic volume on the BSC/Maximum board specification For example: The specification of the GOUc board over the A interface is 23040 CICs, and the number of serving CICs is 10000. Therefore, the board usage is 43.4% (10000/23040 x 100%).

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7

7 Acronyms and Abbreviations

Acronyms and Abbreviations

Table 7-1 Acronyms and abbreviations

Issue 07 (2014-09-12)

Acronym and Abbreviation

Full Name

ATM

Asynchronous Transfer Mode

CN

Core Network

CP

Control Plane

EPS

Extension process subrack

GPS

Global Positioning System

Iu

Interface between RNC and CN

Iub

Interface between RNC and NodeB

Iur

Interface between RNC and RNC

MPS

Main process subrack

NodeB

Base station in WCDMA networks

RNC

Radio Network Controller

UP

User Plane


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BSC6910 Configuration Principle(Global)(V100R015C00_07)(PDF)-En

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