Green BTS

Green BTS RAN12.0

Feature Parameter Description

Issue

03

Date

2011-03-30

HUAWEI TECHNOLOGIES CO., LTD.

Copyright © Huawei Technologies Co., Ltd. 2012. 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 the 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]

WCDMA RAN Green BTS

Contents

Contents 1 Introduction ................................................................................................................................1-1 1.1 Scope ............................................................................................................................................ 1-1 1.2 Intended Audience......................................................................................................................... 1-1 1.3 Change History.............................................................................................................................. 1-1

2 Overview of Green BTS ...........................................................................................................2-1 2.1 Dynamic Cell Shutdown ................................................................................................................ 2-1 2.2 Energy Efficiency Improvement .................................................................................................... 2-1 2.3 Intelligent Power-Off ...................................................................................................................... 2-2 2.4 Management of the Solar Power System and Diesel Generator .................................................. 2-2

3 Technical Description ..............................................................................................................3-1 3.1 Dynamic Cell Shutdown ................................................................................................................ 3-1 3.1.1 Procedure of Dynamic Cell Shutdown .................................................................................. 3-1 3.1.2 Conditions for Starting Up a Cell .......................................................................................... 3-2 3.2 Energy Efficiency Improvement .................................................................................................... 3-3 3.2.1 Dynamic Voltage Adjustment ................................................................................................ 3-3 3.2.2 Combination of Dynamic Voltage Adjustment and Dynamic Cell Shutdown ........................ 3-3 3.3 Intelligent Power-Off ...................................................................................................................... 3-4 3.4 Management of the Solar Power System and Diesel Generator .................................................. 3-5

4 Parameters..................................................................................................................................4-1 5 Counters ......................................................................................................................................5-1 6 Glossary ......................................................................................................................................6-1 7 Reference Documents .............................................................................................................7-1

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

i

WCDMA RAN Green BTS

1 Introduction

1 Introduction 1.1 Scope This document describes the Green BTS feature and related functions on which Green BTS is based, and furthermore provides parameters associated with this feature.

1.2 Intended Audience This document is intended for: 

Personnel who are familiar with WCDMA basics



Personnel who need to understand Green BTS



Personnel who work with Huawei products

1.3 Change History This section provides information on the changes in different document versions. There are two types of changes, which are defined as follows: 

Feature change: refers to the change in the Green BTS feature.



Editorial change: refers to the change in wording or the addition of the information that was not described in the earlier version.

Document Issues The document issues are as follows: 

03 (2011-03-30)



02 (2010-12-20)



01 (2010-03-30)



Draft (2009-12-05)

03 (2011-03-30) This is the document for the third commercial release of RAN12.0. Compared with issue 02 (2010-12-20) of RAN12.0, this issue optimizes the description about energy efficiency improvement. For details, see 3.2 “Energy Efficiency Improvement.”

02 (2010-12-20) This is the document for the second commercial release of RAN12.0. Compared with issue 01 (2010-03-30) of RAN12.0, this issue optimizes the description.

01 (2010-03-30) This is the document for the first commercial release of RAN12.0. Compared with issue Draft (2009-12-05) of RAN12.0, this issue optimizes the description.

Draft (2009-12-05) This is the draft of the document for RAN12.0.

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1 Introduction

Compared with issue 02 (2009-06-30) of RAN11.0, this issue incorporates the changes described in the following table. Change Type

Change Description

Parameter Change

Feature change

The feature about energy efficiency improvement is enhanced.

The added parameters are listed as follows:

The function about “Intelligent Power-Off” is added.



DYNADJSWITCH



DYNADJSTARTTIME



DYNADJENDTIME

The added parameters are listed as follows: 

LSDV



BSDV



ISD



LEVEL1



LEVEL2



RSV



SWITCH

The function about “Management of the The added parameters are listed as follows: Solar Power System and Diesel  ACVUTHD Generator” is added.  ACVLTHD

Editorial change None.

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

DCVUTHD



DCVLTHD



HTSDF



SDT

None.


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2 Overview of Green BTS

2 Overview of Green BTS With the rapid growth of the telecom industry and the continuous expansion of telecom networks, the demand for electricity has grown significantly and the telecom industry has to incur huge financial costs. In addition, the overuse of energy has resulted in overexploitation of natural resources and has brought about the rapid deterioration of the environment. High energy consumption and rapid environmental deterioration have become huge challenges for the telecom industry. Hence, telecom operators are in high demand for cost-effective and environment-friendly solutions to save energy, reduce pollution, and thereby contribute towards a green and healthy environment. To achieve this goal, Huawei has developed the green BTS feature, which provides the following functions: 

Dynamic cell shutdown



Energy efficiency improvement



Intelligent power-off



Management of the solar power system and diesel generator

2.1 Dynamic Cell Shutdown During a certain period of time, the traffic density or traffic volume in a cell may be relatively low. In such a case, the dynamic cell shutdown function hands over some UEs from this cell to other inter-frequency same-coverage neighboring cells (referred to as "neighboring cells" in the section of dynamic cell shutdown) if certain load conditions are met. Subsequently, this cell is shut down to reduce the power consumption. Figure 2-1 shows dynamic cell shutdown. Figure 2-1 Dynamic cell shutdown

In a multi-band network, enable the dynamic cell shutdown function with caution. The reason is that UEs supporting only some of the bands will fail to access the network if cells with these bands are shut down.

2.2 Energy Efficiency Improvement The power amplifier (PA) output power of a base station fluctuates depending on the traffic load. If the PA output power is high, the PA efficiency is also high. The PA is the main power-consuming component of the base station. Therefore, improving the PA efficiency can reduce the overall power consumption of the base station, thus saving energy and

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reducing the costs of network operation. The PA efficiency is associated with the peak power of output signals and the static power consumption of the PA. The static power consumption is determined mainly by the offset voltage of the PA. To reduce the static power consumption and improve the PA efficiency, the base station adjusts the PA offset voltage based on the PA output power, which fluctuates depending on the traffic load. When the PA output power is high, the PA offset voltage should also be high to ensure the linearity of power amplification, thus reducing signal distortion. When the traffic load is low, the PA output power decreases. In this case, however, the PA offset voltage remains unchanged, which leads to low PA efficiency because the static power consumption is high. Therefore, when the PA output power decreases, the PA offset voltage needs to be lowered to reduce the static power consumption and to improve the PA efficiency. The principle of the energy efficiency improvement is that the PA offset voltage can be adjusted on the basis of the PA output power. Thus, in the case of low PA output power, the offset voltage is adjusted to reduce the power consumption and to improve the PA efficiency. This solution is mainly applied to the following scenarios: 

In the early stage of network deployment, the maximum configured output power is not reached because of low traffic load.



In the areas where the traffic load varies with time, for example, in some central business districts (CBDs), the traffic load is very high during the day but very low at night, which results in fluctuations in the PA output power.



In inter-frequency same-coverage networking, a cell is shut down automatically, which results in a fluctuation in the PA output power.

2.3 Intelligent Power-Off Generally, the base station receives power from the mains. A power backup system with large-capacity batteries is configured for the base station. The purpose is to enable the base station to operate in the case of power failure and to increase the operation time span of the base station after power failure. This entails an increased investment in the power backup systems. In addition, the base stations consume more power, increasing the operating expenditure. Therefore, based on different DC voltage thresholds and cell power-off priorities, intelligent power-off is performed on the cells, radio frequency (RF) modules, and base station to increase the service time span of the power backup systems. The intelligent power-off function reduces the investment in the power backup systems and saves energy. If the base station is located in a transmission center, there is no need to configure the power backup systems for the base station and transmission equipment respectively.

2.4 Management of the Solar Power System and Diesel Generator Solar energy is inexhaustible in supply and is one of the most non-polluting energy forms. Therefore, more sectors are tapping solar energy as alternative power. With the development of solar technologies and improvement of photovoltaic products, the solar power system is introduced into the base station because of its little impact on the environment and high reliability. Thus, the base station can achieve the goal of energy efficiency and environmental protection. The solar power system consists of the solar power device, solar power controller, and batteries. It supplies power for the base station after converting sunlight into electricity and stores surplus power in batteries. The base station can manage the solar power system through the solar power controller, thus improving the operability and maintainability.

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The base station can also manage both the solar power system and the diesel generator through the solar power controller. The solar power system and the diesel generator can work in a cooperative manner, where the diesel generator is a supplement to the solar power system. This solution ensures uninterrupted power supply in special situations, such as in consecutive rainy days or in a period without sufficient sunshine. It has little impact on the environment and provides high reliability. This solution can be customized to meet different requirements.

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3 Technical Description

3 Technical Description 3.1 Dynamic Cell Shutdown This section describes the feature WRFD-020117 Multi-Carrier Switch off Based on Traffic Load. The RNC-level switch for dynamic cell shutdown function can be set through the parameter DynCellShutDownSwitch. The cell-level switch for dynamic cell shutdown function can be set through the parameter DynShutdownSwitch.

3.1.1 Procedure of Dynamic Cell Shutdown Traffic load varies with time. For example, the traffic load in some central business districts is very high during the day and requires multiple cells for services, but the traffic load is very low at night. To adapt to this condition and avoid frequent shutdowns due to power fluctuations, you can set an effective period for the dynamic cell shutdown function. Figure 3-1 shows the procedure of dynamic cell shutdown. Figure 3-1 Procedure of dynamic cell shutdown

As shown in Figure 3-1, cell A and cell B are inter-frequency same-coverage neighboring cells, between which blind handover can be performed.

The function of dynamic cell shutdown can be turned on through the parameter DynShutdownSwitch, and at most three different effective intervals can be configured for a day. The parameter DynShutDownType determines the mode of cell shutdown, forcibly or dynamically. 

If the DynShutDownType parameter is set to FORCESHUTDOWN, the cell is shut down forcibly within the effective period.



If the DynShutDownType parameter is set to CONDITIONALSHUTDOWN, the cell is shut down dynamically within the effective period.

The procedure of dynamic cell shutdown is as follows: 1. The RNC periodically checks whether the cell meets the following conditions:

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− The

total number of UEs is below the total user number threshold of dynamic cell shutdown (TotalUserNumThd).

− The

number of HSDPA UEs is below the HSDPA user number threshold of dynamic cell shutdown (HsdpaUserNumThd).

− The

number of HSUPA UEs is below the HSUPA user number threshold of dynamic cell shutdown (HsupaUserNumThd).

− The

load margin of a neighboring cell is above the load margin threshold of neighboring cells during dynamic cell shutdown (NcellLdrRemainThd).

− No

MBMS services, CBS services, or UEs on common channels exist in this cell.

− If

the cell to be shut down is a dual-carrier high-speed downlink packet access (DC-HSDPA) cell, there is another DC-HSDPA cell in the same coverage so that DC-HSDPA UEs can be handed over to this cell.

If all the preceding conditions are met, the RNC triggers a cell shutdown and performs the next step. Otherwise, the RNC repeats the previous operations. A DC-HSDPA cell can be shut down only when other DC-HSDPA cells exist in the same coverage and the requirements for handover of DC-HSDPA UEs are met. If other DC-HSDPA cells do not exist in the same coverage, the DC-HSDPA cell cannot be shut down.

2. The RNC starts a handover-waiting timer T1 (30s) and hands over the UEs from this cell to the inter-frequency same-coverage neighboring cells. 3. If no UE exists in the local cell and the load of neighboring cells is normal when T1 expires, the RNC identifies this cell as an unusable cell and sends a cell shutdown indication to the base station. Otherwise, the RNC returns to 1. 4. The base station shuts down this cell. − If

the base station fails to shut down this cell, the RNC identifies this cell as a usable cell through an internal audit message after receiving the corresponding message from the base station and then returns to 1.

− If

the base station succeeds in shutting down the cell, the RNC periodically checks whether the condition for starting up the cell is met. If the condition is met, the RNC starts up the cell and starts a protection timer T2 (DynCellShutdownProtectTimerlen). After T2 expires, the RNC returns to 1.

----End

3.1.2 Conditions for Starting Up a Cell If the DynShutDownType parameter of a cell is set to CONDITIONALSHUTDOWN, after the cell is shut down automatically, the RNC periodically (DynCellOpenJudgeTimerlen) checks the conditions for starting up the cell. If any of the following conditions is met, the RNC starts up the cell: 

The effective period of dynamic cell shutdown expires.



In the sector to which the shutdown cell belongs, there is another cell whose load is in the load reshuffling (LDR) state.



A same-coverage neighboring cell fails to admit a service because of insufficient resources.

The cell that was shut down forcibly can be started up only when the effective period of dynamic cell shutdown expires.

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3.2 Energy Efficiency Improvement 3.2.1 Dynamic Voltage Adjustment This section describes the function WRFD-020118 Energy Efficiency Improved. It describes how to adjust the offset voltage based on the output power that varies with the traffic load, thus improving the PA efficiency and reducing the static PA power consumption. Therefore, this function also called dynamic voltage adjustment. Except the MTRU for BTS3812E/AE and RRU3801C for distributed baseband site, other RF modules of the NodeB can support dynamic voltage adjustment. Dynamic voltage adjustment is license-controlled and therefore require license activation on the NodeB side before use. If there is no HSDPA user in the cell, the offset voltage can be adjusted for a RF module only when the license of dynamic voltage adjustment is activated. If there is any HSDPA user in the cell, the offset voltage can be adjusted for a RF module when all of the following conditions are met. 

The license of dynamic voltage adjustment is activated.



The switch parameter DYNADJSWITCH is set to ON. The parameter DYNADJSWITCH is used to specify whether the offset voltage can be adjusted in case of HSDPA services.



The current time is later than DYNADJSTARTTIME and earlier than DYNADJENDTIME. This two parameters respectively specify the start time and end time of a period during which offset voltage can be adjusted in case of HSDPA services.

The method of offset voltage adjustment is described as follows: On a live network, the cell power fluctuations caused by service changes are within the range of 0 dB to -7 dB. Therefore, the energy efficiency improvement function classifies the output power of the RF modules into eight levels, namely, levels 0 to 7. The difference between two levels is 1 dB, that is, the power adjustment range is 7 dB. Level 0 corresponds to the highest output power, which is the sum of the maximum transmit power of all carriers on the RF modules. In addition, each level corresponds to an offset voltage value. For example, for a dual-carrier RF module, if the maximum transmit power of each carrier is 20 W, the output power of level 0 is 40 W, that is, 46 dBm. The corresponding output power of levels 0 to 7 ranges from 46 dBm to 39 dBm. The RF module of the base station calculates the average PA output power every 100 ms. Based on the calculated power, the RF module adjusts the offset voltage in a fast-increasing and slow-decreasing manner to avoid disruption of services. The adjustment method is described as follows: 

If 70% of the output power values calculated in five consecutive seconds is higher than the power of the current level, increase the offset voltage to the value corresponding to level 0, that is, the maximum output power.



If all of the output power values calculated in five consecutive minutes are lower than the power of the current level, reduce the power level by one level and set the offset voltage to the value corresponding to the lowered level.

3.2.2 Combination of Dynamic Voltage Adjustment and Dynamic Cell Shutdown From the function implementation point of view, the dynamic voltage adjustment function and the dynamic cell shutdown function can work independently. The two functions can also work in a cooperative manner to reduce the power consumption to a great extent.

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For example, for the PA of a dual-carrier RF module, after one carrier is shut down, the actual output power drops sharply, compared with the rated output power of the PA. In this case, if the PA offset voltage remains unchanged and the PA efficiency is low, the power consumed by the PA decreases slightly. If the PA offset voltage is lowered, the PA efficiency is improved and the power consumed by the PA drops significantly. Therefore, the combination of the two functions can save power more efficiently.

3.3 Intelligent Power-Off This section describes the features WRFD-031400 Power off the equipment level by level and WRFD-020119 Multi-Carrier Switch off Based on Power Backup. In the case of mains power failure, the base station can have power supply from batteries if it is configured with a power backup system. The user can power off the equipment level by level by setting different DC voltage threshold to intelligent shutdown of RF modules and sites (WRFD-031400 Power off the equipment level by level). Thus, the service time span of the power backup system is increased. Figure 3-2 Power off the equipment level by level

As shown in Figure 3-2, when the voltage decreases to a threshold (G2, load shutdown voltage, is specified by the parameter LSDV), the Node B disables the RF module and keeps the baseband module and transmission device working properly. This function ensures long-time power backup for baseband modules and transmission devices, in particular at the hub Node B. After the RF module intelligent shutdown, when the voltage decreases to a threshold (G3, battery shutdown voltage, is specified by the parameter BSDV), the Node B and all its modules are powered off. This function can save investment in the battery backup system. After a mains failure, the system can work for a longer period of time, and in particular the transmission device achieves longer power backup.

In RAN12.0, hierarchical carrier shutdown (WRFD-020119 Multi-Carrier Switch off Based on Power Backup) is introduced before RF module intelligent shutdown. If the switch parameter ISD is set to ENABLE, In case of mains failure, the batteries start to operate. And then, the NodeB will be triggered to shut down cells level by level. At the first level of shutdown time which is specified by the parameter LEVEL1, the non-reserved cell other than reserved cells will be shut down. At the second level of shutdown time which is specified by the parameter LEVEL2, the reserved cells will be shut down.

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Whether a cell is reserved or not can be specified by the parameter RSV. Moreover, if the SWITCH parameter is set to OPEN, the pilot power is reduced gradually so that the services can be handed over to other available carriers smoothly.

3.4 Management of the Solar Power System and Diesel Generator This section describes the feature WRFD-031500 Solar Power Device Management. The 3900 series base stations support the management of the solar power system and diesel generator, as shown in Figure 3-3. Figure 3-3 Management of the solar power system and diesel generator

Through the RS485 serial port between the base station and the solar power controller, the base station manages the solar power system and diesel generator. The management functions include configuration, monitoring, and alarm reporting. For the solar power system, the base station performs the following management functions: 

Performing data configuration, querying, and modification for the solar power device through the CN, SRN, and SN parameters



Setting AC and DC voltage thresholds for the solar power controller through the ACVUTHD, ACVLTHD, DCVUTHD, and DCVLTHD parameters



Setting high-temperature protection thresholds for the solar power controller through the HTSDF and SDT parameters



Setting a boost-charging voltage and a float-charging voltage for the batteries through the BCV and FCV parameters respectively



Setting high- and low-temperature thresholds for the batteries through the TUTHD and TLTHD parameters respectively

For the diesel generator, the base station performs the following management functions: 

Performing data configuration, querying, and modification for the diesel generator through the CN, SRN, and SN parameters



Enabling the power monitoring unit (PMU) to automatically control the diesel generator by setting the ICF parameter to ENABLE

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Setting the maximum output power of the diesel generator to the rated output power through the POWER parameter

Enabling the automatic check of the diesel generator through the CN, SRN, and SN parameters If the automatic check function detects that the diesel generator is not started, an alarm is automatically reported.

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4 Parameters

4 Parameters Table 4-1 Parameter description Parameter ID

NE

MML Command

Meaning

DynCellOpe BSC69 SET Meaning: When the cell is automatically shut down, this nJudgeTimer 00 URNCCELLSHUTD parameter is used to repeatedly determine whether the cell len OWNPARA(Option needs to be automatically enabled. al) GUI Value Range: 1~3600 Actual Value Range: 1~3600 Unit: s Default Value: 20 DynCellShut BSC69 SET Meaning: When the cell is automatically enabled, the cell can downProtect 00 URNCCELLSHUTD be automatically disabled again only after a period delay. Timerlen OWNPARA(Option al) GUI Value Range: 60~3600 Actual Value Range: 60~3600 Unit: s Default Value: 180 DynCellShut BSC69 SET Meaning: When the switch is on, the Cell dynamic shutdown DownSwitch 00 URNCCELLSHUTD algorithm of the local RNC cell is enabled. When the switch is OWNPARA(Option off, the Cell dynamic shutdown algorithm of the local RNC al) cell is disabled. GUI Value Range: OFF(switch off), ON(switch on) Actual Value Range: OFF, ON Unit: None Default Value: OFF DynShutdow BSC69 ADD Meaning: When the "Cell Dynamic ShutDown Switch" is on, nSwitch 00 UCELLDYNSHUTD the cell dynamic shutdown feature is valid. OWN(Mandatory) GUI Value Range: OFF(switch off), ON_1(switch on1), ON_2(switch on2), ON_3(switch on3) Actual Value Range: OFF, ON_1, ON_2, ON_3 Unit: None Default Value: None DynShutDow BSC69 ADD Meaning: When DynShutDownType is ForceShutDown,the nType 00 UCELLDYNSHUTD cell will be shut down in the shutdown time interval. When OWN(Optional) DynShutDownType is ConditionalShutDown, the cell will be shut down with some conditions in the shutdown time interval. GUI Value Range: FORCESHUTDOWN(ForceShutDown), CONDITIONALSHUTDOWN(ConditionalShutDown) Actual Value Range: FORCESHUTDOWN, CONDITIONALSHUTDOWN Unit: None Default Value: CONDITIONALSHUTDOWN

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4 Parameters

Parameter ID

NE

EndTime1

BSC69 ADD Meaning: End time of the first interval when the cell dynamic 00 UCELLDYNSHUTD shutdown feature is valid. OWN(Mandatory) GUI Value Range: HOUR, MIN Actual Value Range: 00:00~23:59 Unit: min Default Value: None

EndTime2

BSC69 ADD Meaning: End time of the second interval when the cell 00 UCELLDYNSHUTD dynamic shutdown feature is valid. OWN(Mandatory) GUI Value Range: HOUR, MIN Actual Value Range: 00:00~23:59 Unit: min Default Value: None

EndTime3

BSC69 ADD Meaning: End time of the third interval when the cell dynamic 00 UCELLDYNSHUTD shutdown feature is valid. OWN(Mandatory) GUI Value Range: HOUR, MIN Actual Value Range: 00:00~23:59 Unit: min Default Value: None

MML Command

Meaning

HsdpaUserN BSC69 ADD Meaning: The cell is shut down automatically only when the umThd 00 UCELLDYNSHUTD HSDPA user number is no greater than the threshold. OWN(Optional) GUI Value Range: 0~5 Actual Value Range: 0~5 Unit: None Default Value: 0 HsupaUserN BSC69 ADD Meaning: The cell is shut down automatically only when the umThd 00 UCELLDYNSHUTD HSUPA user number is no greater than the threshold. OWN(Optional) GUI Value Range: 0~5 Actual Value Range: 0~5 Unit: None Default Value: 0 NCellLdrRe BSC69 ADD Meaning: The cell is shut down automatically only when the mainThd 00 UCELLDYNSHUTD neighboring cell load is less than the difference between the OWN(Optional) LDR threshold and this threshold. GUI Value Range: 0~100 Actual Value Range: 0~1, step:0.01 Unit: % Default Value: 20

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4 Parameters

Parameter ID

NE

StartTime1

BSC69 ADD Meaning: Start time of the first interval when the cell dynamic 00 UCELLDYNSHUTD shutdown feature is valid. OWN(Mandatory) GUI Value Range: HOUR, MIN Actual Value Range: 00:00~23:59 Unit: min Default Value: None

StartTime2

BSC69 ADD Meaning: Start time of the second interval when the cell 00 UCELLDYNSHUTD dynamic shutdown feature is valid. OWN(Mandatory) GUI Value Range: HOUR, MIN Actual Value Range: 00:00~23:59 Unit: min Default Value: None

StartTime3

BSC69 ADD Meaning: Start time of the third interval when the cell 00 UCELLDYNSHUTD dynamic shutdown feature is valid. OWN(Mandatory) GUI Value Range: HOUR, MIN Actual Value Range: 00:00~23:59 Unit: min Default Value: None

MML Command

Meaning

TotalUserNu BSC69 ADD Meaning: The cell is shut down automatically only when the mThd 00 UCELLDYNSHUTD total user number is no greater than the threshold. The total OWN(Optional) user number consists of the DCH and CCH user numbers. GUI Value Range: 0~5 Actual Value Range: 0~5 Unit: None Default Value: 1 ACVLTHD

Meaning: AC voltage alarm lower threshold. In multi-mode NodeB SET ACDCVLIMIT(Optio base station scenario, the value of this parameter in different nal) modes must be the same for the same multi-mode base station. GUI Value Range: 60~300 Actual Value Range: 60~300 Unit: V Default Value: -

ACVUTHD

Meaning: AC voltage alarm upper threshold. In multi-mode NodeB SET ACDCVLIMIT(Optio base station scenario, the value of this parameter in different nal) modes must be the same for the same multi-mode base station. GUI Value Range: 60~300 Actual Value Range: 60~300 Unit: V Default Value: -

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4 Parameters

Parameter ID

NE

BCV

Meaning: Boost-charging voltage. In multi-mode base station NodeB SET BCFCVOLTAGE(O scenario, the value of this parameter in different modes must ptional) be the same for the same multi-mode base station.

MML Command

Meaning

GUI Value Range: 432~576 Actual Value Range: 43.2~57.6, step: 0.1 Unit: V Default Value: 565 DCVLTHD

Meaning: DC voltage alarm lower threshold. In multi-mode NodeB SET ACDCVLIMIT(Optio base station scenario, the value of this parameter in different nal) modes must be the same for the same multi-mode base station. GUI Value Range: 350~556 Actual Value Range: 35.0~55.6, step: 0.1 Unit: V Default Value: -

DCVUTHD

Meaning: DC voltage alarm upper threshold. In multi-mode NodeB SET ACDCVLIMIT(Optio base station scenario, the value of this parameter in different nal) modes must be the same for the same multi-mode base station. GUI Value Range: 580~600 Actual Value Range: 58.0~60.0, step: 0.1 Unit: V Default Value: -

DYNADJEN NodeB SET Meaning: When the current time is later than this parameter, DTIME OPTDYNADJPARA the dynamic voltage adjustment function stops taking effect. (Optional) GUI Value Range: 0~23 Actual Value Range: 0~23 Unit: None Default Value: 6 DYNADJST NodeB SET Meaning: When the current time is later than this parameter, ARTTIME OPTDYNADJPARA the dynamic voltage adjustment function takes effect. (Optional) GUI Value Range: 0~23 Actual Value Range: 0~23 Unit: None Default Value: 0 DYNADJSWI NodeB SET Meaning: When this parameter is set to ON, the dynamic TCH OPTDYNADJPARA voltage adjustment function is enabled. (Optional) GUI Value Range: OFF(Off), ON(On) Actual Value Range: OFF, ON Unit: None Default Value: OFF

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4 Parameters

Parameter ID

NE

FCV

Meaning: Float-charging voltage. In multi-mode base station NodeB SET BCFCVOLTAGE(O scenario, the value of this parameter in different modes must ptional) be the same for the same multi-mode base station.

MML Command

Meaning

GUI Value Range: 432~576 Actual Value Range: 43.2~57.6, step: 0.1 Unit: V Default Value: 535 HTSDF

Meaning: High temperature shutdown flag NodeB SET HTPROTECT(Optio nal) GUI Value Range: ENABLE, DISABLE Actual Value Range: ENABLE, DISABLE Unit: None Default Value: ENABLE

ICF

NodeB ADD DIESELGEN(Optio nal) MOD DIESELGEN(Optio nal)

Meaning: This parameter indicates whether the intelligent control mechanism of the diesel generator is enabled. When intelligent control is enabled, the PMU automatically controls the diesel generator according to the preset parameters, thus saving the running cost of the diesel generator. GUI Value Range: ENABLE, DISABLE Actual Value Range: ENABLE, DISABLE Unit: None Default Value: DISABLE

ISD

Meaning: Itel Shutdown Switch NodeB SET ITELSHUTDOWN( Optional) GUI Value Range: DISABLE, ENABLE Actual Value Range: DISABLE, ENABLE Unit: None Default Value: ENABLE

LEVEL1

Meaning: Level1 PowerOff Delay NodeB SET ITELSHUTDOWN( Optional) GUI Value Range: 60~36000 Actual Value Range: 60~36000 Unit: s Default Value: 60

LEVEL2

Meaning: Level2 PowerOff Delay NodeB SET ITELSHUTDOWN( Optional) GUI Value Range: 120~36000 Actual Value Range: 120~36000 Unit: s Default Value: 120

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4 Parameters

Parameter ID

NE

POWER

NodeB ADD DIESELGEN(Optio nal) MOD DIESELGEN(Optio nal)

Meaning: This parameter indicates the maximum rated output power of the diesel generator. This parameter should be configured according to the rated output power printed on the name plate of the diesel generator.

NodeB MOD LOCELL(Optional) ADD LOCELL(Optional)

Meaning: This parameter enables a cell to be reserved or not. When the voltage is insufficient but still can support services carried on some cells, the cell can continue providing services if this parameter is set to TRUE; the services carried on the cell are terminated if this parameter is set to FALSE. When the voltage is insufficient and no cell service can be supported, even the services carried on a reserved cell are terminated. If the smooth power switch is set to ON, the pilot power is gradually reduced before the services are terminated. Thus, the services can be smoothly handed over to other normal carriers.

RSV

MML Command

Meaning

GUI Value Range: 1~1000 Actual Value Range: 0.1~100.0, step: 0.1 Unit: kVA Default Value: 125

GUI Value Range: FALSE(False), TRUE(True) Actual Value Range: FALSE, TRUE Unit: None Default Value: False SDT

Meaning: Shutdown temperature NodeB SET HTPROTECT(Optio nal) GUI Value Range: 40~70 Actual Value Range: 40~70 Unit: degree Celsius Default Value: -

SWITCH

Meaning: Smooth power change function switch NodeB SET SMTHPWRSWTCH (Mandatory) GUI Value Range: OPEN(Open), CLOSE(Close) Actual Value Range: OPEN, CLOSE Unit: None Default Value: -

TLTHD

NodeB ADD BATTERY(Optional ) MOD BATTERY(Optional )

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Meaning: Under-temperature alarm threshold of battery temperature. In multi-mode base station scenario, the value of this parameter in different modes must be the same for the same multi-mode base station. GUI Value Range: -20~20 Actual Value Range: -20~20 Unit: degree Celsius Default Value: -19


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4 Parameters

Parameter ID

NE

TUTHD

NodeB ADD BATTERY(Optional ) MOD BATTERY(Optional )

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MML Command

Meaning Meaning: Over-temperature alarm threshold of battery temperature. In multi-mode base station scenario, the value of this parameter in different modes must be the same for the same multi-mode base station. GUI Value Range: 35~80 Actual Value Range: 35~80 Unit: degree Celsius Default Value: 50


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5 Counters

5 Counters For details, see the BSC6900 UMTS Performance Counter Reference.

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6 Glossary

6 Glossary For the acronyms, abbreviations, terms, and definitions, see the Glossary.

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7 Reference Documents

7 Reference Documents None.

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