eNodeB LTE FDD solution Training.pdf

eNodeB LTE FDD Product Description www.huawei.com

Copyright © 2011 Huawei Technologies Co., Ltd. All rights reserved.

Contents 1. System Overview 2. System Structure 3. Typical Configuration


Page1

eNodeB in LTE/SAE Network



E-UTRAN: Evolved UMTS Terrestrial Radio Access Network



EPC: Evolved Packet Core network



MME: Mobility Management Entity



S-GW: Server Gateway


Page2

Huawei eNodeB Base Station Description Indoor eNodeB BTS3900

Outdoor eNodeB BTS3900A

Distributed eNodeB DBS3900 Micro eNodeB

Future release RFU

Multi-modal RRU 60W/4C CDMA/WCDMA/LTE GSM/UMTS/LTE WiMAX

RRU

BBU

Multi-modal BBU 2U 19-in rack mount design Simultaneous 2G/3G/4G operation



Huawei Fourth Generation Base Station  Three standardized modules shared by all eNodeB portfolio Copyright © 2011 Huawei Technologies Co., Ltd. All rights reserved.

Page 3

eNodeB Modules

Baseband Unit BBU3900

CPRI

RF Unit RFU/RRU

Cabinet


Page4

Capacity Specification Item

Specification

Maximum number of cells (DBS3900)

4

x 2 MIMO: 6 cells (1.4 MHz/3 MHz/5 MHz/10 MHz/15 MHz/20 MHz) 2 x 2 MIMO: 12 cells (1.4 MHz/3 MHz/5 MHz/10 MHz/15 MHz/20 MHz)

Maximum throughput per cell (20 MHz)

Downlink

Maximum throughput per eNodeB

Downlink:

rate at the Media Access Control (MAC) layer: 150 Mbit/s Uplink rate at the MAC layer: 70 Mbit/s 450 Mbit/s Uplink: 300 Mbit/s

Maximum number of UEs in One LBBP configured (bandwidth of 1.4 MHz): 1008 RRC_CONNECTED mode in One LBBP configured (bandwidth of 3 MHz/5 MHz/10 MHz/15 MHz/20 an eNodeB MHz): 1800 More than one LBBP configured (bandwidth of 1.4 MHz): 3024 More than one LBBP configured (bandwidth of 3 MHz/5 MHz/10 MHz/15 MHz/20 MHz): 5400 Maximum number of concurrent Data Radio Bearers (DRBs) per UE

8


Page5

Contents 1. System Overview 2. System Structure 3. Auxiliary Devices 4. Typical Configuration


Page6

Contents 2. System Structure 2.1 Base Band Unit(BBU) Introduction 2.2 RF Unit(RFU, RRU) Introduction


Page7

BBU3900



Dimensions: 86mm x 442mm x 310mm (H x W x D)



Power consumption: 132 W (3 x 10 MHz) ~300 W (3 x 20 MHz)



Weight: ≤12 kg


Page8

Physical Modules of the BBU3900 

Slots for BBU3900 boards and modules



3 x 20MHz 2T2R typical configuration


Page9

LMPT (The LTE Main Processing & Transmission Unit )



Mandatory, Maximum 2 boards, hold in slot 7(default) or 6



Function: 

Performs configuration management, equipment management, performance monitoring, signaling processing, and radio resource management



Controls all boards in the system



Provides the system clock and transmission ports


Page10

LBBP (The LTE Baseband Processing Unit)



Mandatory, Maximum 3 boards, hold in slot 1, 2 or 3 (default)



Function: 

Processes uplink and downlink baseband signals



Provides CPRI ports for communication between BBU3900 and RRUs


Page11

Specification of LBBP Board LBBPc

Number of Cell

Bandwidth of Cell

ANT Configuration

3

15M/20M

2T2R

6

5M/10M

2T2R

3

5M/10M

4T4R

1

15M/20M

4T4R


Page12

UPEU (The Universal Power and Environment interface Unit)



Mandatory, Maximum 2 modules, hold in slot 4 (default) and slot 5



Functions: 

Converts -48 V DC or +24 V DC power into +12 V DC power



Provides ports for transmission of two RS485 signals and eight dry contact signals


Page13

Clock Synchronization Modes 

GPS Clock 

If an eNodeB is synchronized with the GPS clock, the eNodeB obtains clock synchronization signals from the GPS through the USCU. In this case, both frequency synchronization and time synchronization are applicable



IEEE1588 V2 Clock 

IEEE1588 defines the Precision Time Protocol (PTP), which targets precise synchronization of distributed and independent clocks in measurement and control systems, with the precision to microseconds. IEEE1588 V2 supports frequency synchronization and time synchronization



In LTE applications, high-accuracy frequency synchronization and time synchronization can be achieved between clock servers and eNodeBs by IEEE1588 V2 synchronization


Page14

Clock Synchronization Modes (Cont.) 

Clock over IP 



Clock over IP is a Huawei proprietary frequency synchronization technology, which is based on an IP clock server/client architecture. It supports only frequency synchronization

Free Running 

The clock enters the free running mode if no reference clock is available after the oscillator is warmed up or if the clock has lost its reference input for a period of time longer than the timer of the holdover mode


Page15

Contents 2. System Structure 2.1 Base Band Unit(BBU) Introduction 2.2 RF Unit(RFU, RRU) Introduction


Page16

RF Unit Category 

There are two kinds of RF units in LTE BTS, RFU and RRU



The RFU is type of radio frequency unit adopted in BTS3900, BTS3900A, BTS3900L



The RRU is a type of radio remote unit adopted in DBS3900


Page17

FDD RF Unit Types Types

RRU

RFU

RRU Name

TX/RX

FRE. Band

Output Power

G/U/L

eRAN version

RRU3201

2T2R

2.6G

2*40W

L

eRAN1.0/2.0

RRU3221

2T2R

2.6G

2*40W

L

eRAN2.1

RRU3908

2T2R

1.8G 900M

2*30W 2*40W

GL/UL/GU

eRAN2.0

RRU3220

2T2R

800M

2*40W

L

eRAN2.0

RRU3222

2T2R

800M

2*40W

L

eRAN2.1

LRFU

2T2R

2.6G/AWS

2*40W

L

eRAN2.0

mRFU

1T2R

1.8G/900M

1*60W

GL

eRAN2.0

LRFU

2T2R

700M

2*60W

L

eRAN2.0


Page18

LRFU 

LTE Radio Frequency Units (LRFUs) work in Frequency Division Duplex (FDD) mode



The LRFU processes uplink and downlink services and controls and monitors internal boards or modules.



LRFU is RF unit which adopted by BTS3900, BTS3900A, BTS3900L


Page19

MRFU 

One Multi-Mode Radio Frequency Unit (MRFU) supports a maximum of six carriers, which support GSM/UMTS/LTE



The MRFU processes uplink and downlink services and controls and monitors internal boards or modules.



MRFU is RF unit which adopted by BTS3900, BTS3900A, BTS3900L


Page20

Specifications of RRU3221 Item Frequency Band/ Bandwidth (FDD)

Specification Frequency band

RX band (MHz)

TX band (MHz)

Supported bandwidth (MHz)

2.6 GHz (Band 7)

2500 to 2570

2620 to 2690

5, 10, 15, or 20

Dimensions (H x W x D)

485 mm (19.09 in.) x 300 mm (11.22 in.) x 170 mm (6.7 in.) (23.5 L, with a housing)

Weight

Not greater than 19 kg (41.9 lb) (with a housing)

Maximum output power

2 × 40 W

Power consumption

370 W (2X40 100% Load)


Page21

RET Modes

STMA Mode

Direct Connection Mode


Page22

Contents 1. System Overview 2. System Structure 3. Typical Configuration


Page23

Hardware Quantities in Typical Configurations Configuration

Numbers

Numbers of

of LMPT

LBBP

3 x 15 MHz/20 MHz, 2T2R

1

6 x 5 MHz/10 MHz, 2T2R

1

Numbers of

Number of RRUs/RFUs

Antennas

LBBPc: 1

3 (6, if MRFUs are required)

3 (dual-polarized antennas)

LBBPc: 1

6

6 (dual-polarized antennas)

6

3 (antennas with four ports)

2

1 (antennas with four ports)

LBBPc: 1

3 x 5 MHz/10 MHz, 4T4R

1

1 x 15 MHz/20 MHz, 4T4R

1

LBBPc:1


Page24

Network Topologies


Page25

Topologies on the CPRI interface


Page26

TMN Topologies – Scenario A


Page27

TMN Topologies – Scenario B


Page28

TMN Topologies – Scenario C


Page29

Thank you www.huawei.com

eNodeB LTE FDD solution Training.pdf

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