2-Antenna Receive Diversity(GBSS14.0_02)...
GSM BSS GBSS14.0
2-Antenna Receive Diversity Feature Parameter Description Issue
02
Date
2012-08-30
HUAWEI TECHNOLOGIES CO., LTD.
Copyright © Huawei Technologies Co., Ltd. 2013. 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:
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Website:
http://www.huawei.com
Email:
[email protected]
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GSM BSS 2-Antenna Receive Diversity Feature Parameter Description
Contents
Contents 1 Introduction to This Document..................................................................................................1 1.1 Scope..................................................................................................................................................................1 1.2 Intended Audience..............................................................................................................................................1 1.3 Change History...................................................................................................................................................1
2 Overview.........................................................................................................................................4 3 Technical Description...................................................................................................................5 3.1 Technical Principle.............................................................................................................................................5 3.2 Diversity Combining Algorithms.......................................................................................................................6 3.2.1 MRC..........................................................................................................................................................6 3.2.2 ICC.............................................................................................................................................................6 3.2.3 EICC..........................................................................................................................................................6 3.2.4 ADC...........................................................................................................................................................6
4 Related Features.............................................................................................................................8 5 Impact on the Network.................................................................................................................9 5.1 2-Antenna Receive Diversity..............................................................................................................................9 5.1.1 Impact on System Capacity.......................................................................................................................9 5.1.2 Impact on Network Performance...............................................................................................................9 5.2 MRC...................................................................................................................................................................9 5.2.1 Impact on System Capacity.......................................................................................................................9 5.2.2 Impact on Network Performance...............................................................................................................9 5.3 ICC......................................................................................................................................................................9 5.3.1 Impact on System Capacity.....................................................................................................................10 5.3.2 Impact on Network Performance.............................................................................................................10 5.4 EICC.................................................................................................................................................................10 5.4.1 Impact on System Capacity.....................................................................................................................10 5.4.2 Impact on Network Performance.............................................................................................................10 5.5 ADC..................................................................................................................................................................10 5.5.1 Impact on System Capacity.....................................................................................................................10 5.5.2 Impact on Network Performance.............................................................................................................10
6 Engineering Guidelines.............................................................................................................11 6.1 When to Use 2-Antenna Receive Diversity......................................................................................................11 Issue 02 (2012-08-30)
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Contents
6.1.1 2-Antenna Receive Diversity...................................................................................................................11 6.1.2 MRC Algorithm.......................................................................................................................................11 6.1.3 ICC Algorithm.........................................................................................................................................11 6.1.4 EICC Algorithm......................................................................................................................................11 6.1.5 ADC Algorithm.......................................................................................................................................11 6.2 Information to Be Collected.............................................................................................................................12 6.3 Network Planning.............................................................................................................................................12 6.4 Feature Deployment.........................................................................................................................................12 6.4.1 2-Antenna Receive Diversity...................................................................................................................13 6.4.2 Deploying MRC......................................................................................................................................13 6.4.3 Deploying ICC.........................................................................................................................................13 6.4.4 Deploying EICC......................................................................................................................................13 6.5 Performance Optimization................................................................................................................................13
7 Parameters.....................................................................................................................................14 8 Counters........................................................................................................................................26 9 Glossary.........................................................................................................................................27 10 Reference Documents...............................................................................................................28
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GSM BSS 2-Antenna Receive Diversity Feature Parameter Description
1
1 Introduction to This Document
Introduction to This Document
1.1 Scope This document describes the working principle of 2-antenna receive diversity and the diversity combining algorithms, including the following features: l
GBFD-115821 EICC
l
MRFD-210604 2-Antenna Receive Diversity
1.2 Intended Audience It is assumed that users of this document are familiar with GSM basics and have a working knowledge of GSM telecommunication. This document is intended for: l
Personnel working on Huawei GSM products or systems
l
System operators who need a general understanding of this feature
1.3 Change History The change history provides information on the changes between different document versions. There are two types of changes, which are defined as follows: l
Feature change Feature change refers to the change in the 2-Antenna receive diversity feature of a specific product version.
l
Editorial change 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: Issue 02 (2012-08-30)
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GSM BSS 2-Antenna Receive Diversity Feature Parameter Description
l
02 (2012-08-30)
l
01 (2012-04-28)
l
Draft A (2012-02-15)
1 Introduction to This Document
02 (2012-08-30) This is the second release of GBSS14.0. Compared with issue 01 (2012-04-28) of GBSS14.0, issue 02 (2012-08-30) of GBSS14.0 incorporates the changes described in the following table. Change Type
Change Description
Parameter Change
Feature change
None
None
Editorial change
Modified the following chapters:
The following parameters are added:
l Chapter 5.1 2-Antenna Receive Diversity
l SndRcvMode
l Chapter 6.1 When to Use 2-Antenna Receive Diversity
l SndRcvMode2
l Chapter 6.4 Feature Deployment
l SndRcvMode4
l SndRcvMode1 l SndRcvMode3
01 (2012-04-28) This is the first release of GBSS14.0. Compared with issue Draft A (2012-02-15) of GBSS14.0, issue 01 (2012-04-28) of GBSS14.0 incorporates the changes described in the following table. Change Type
Change Description
Parameter Change
Feature change
Added the following chapters:
None
Chapter "5.5 ADC" Editorial change
Added the following chapters:
None
l Chapter "4 Related Features" l Chapter "5 Impact on the Network" l Chapter "6 Engineering Guidelines"
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GSM BSS 2-Antenna Receive Diversity Feature Parameter Description
1 Introduction to This Document
Draft A (2012-02-15) This is the draft release of GBSS14.0. Compared with issue 01 (2011-03-31) of GBSS13.0, issue Draft A (2012-02-15) of GBSS14.0 has no change.
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GSM BSS 2-Antenna Receive Diversity Feature Parameter Description
2 Overview
2
Overview
In a wireless communications system, the radio signal from the transmitter arrives at the receiver through two or more paths. This phenomenon is called multipath propagation. With multipath propagation, the amplitude, phase, and angle of the received signal change. This phenomenon is called multipath fading. As a result, the quality of the received signal deteriorates. Diversity is one of the techniques used to handle multipath fading in the communications system. It increases the signal-to-noise ratio by superimposing uncorrelated signals. The diversity technique in GSM involves time diversity, frequency diversity, and space diversity. In the case of space diversity, multiple antennas are used at the receiver to receive uncorrelated signals of the same source (superimposition of uncorrelated signals). In engineering implementation, generally two antennas (or two polarization ends of the same polarization antenna) are used to receive signals. The signals received from the two antennas can be combined in different ways to obtain desired signals, for example, Maximal Ratio Combining (MRC), Interference Cancellation Combining (ICC), and Enhanced Interference Rejection Combining (EICC).
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GSM BSS 2-Antenna Receive Diversity Feature Parameter Description
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3 Technical Description
Technical Description
3.1 Technical Principle The 2-antenna receive diversity technique combines the signals received from the two diverse antennas at the receiving end to mitigate multipath interference. Figure 3-1 shows the working principle of 2-antenna receive diversity. Figure 3-1 Working principle of 2-antenna receive diversity
As shown in Figure 3-1: 1.
The signal x(k) arrives at the diverse antennas through two RX channels. The two RX signals are identified as r1(k) and r2(k). After the superimposition of interference and noise, the two RX signals are identified as S1(k) and S2(k).
2.
Based on the maximum signal-to-noise ratio criterion, the adaptive combining coefficients W1 and W2 are calculated and the output signal is obtained through the formula: y(k) = W1 x S1(k) + W2 x S2(k).
The combining algorithms consist of the MRC, ICC, and EICC. In Figure 3-1 the two RX channels correspond to the main and diversity RX channels of the TRX. To enabled this feature, set the transmit and receive mode of a board to dual-receive. Issue 02 (2012-08-30)
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GSM BSS 2-Antenna Receive Diversity Feature Parameter Description
3 Technical Description
NOTE
The parameters related to the transmit and receive mode vary depending on the board type. These parameters include SndRcvMode, SndRcvMode1, SndRcvMode2, SndRcvMode3, and SndRcvMode4.
3.2 Diversity Combining Algorithms 3.2.1 MRC MRC performs weighted combining on the two signals received by the BTS based on their respective signal-to-noise ratios. This combining method is ideal for situations with little interference and limited noise. It is applicable to wide coverage, such as over sea coverage. To enable the MRC algorithm of 2-antenna receive diversity, set ICTYP toMRC(MRC).
3.2.2 ICC ICC is a multi-antenna combining technique developed from MRC. In tight frequency reuse scenarios the interfering signals received at diverse antennas may come from the same interfering source. Therefore, a certain correlation exists among these interfering signals. ICC uses this correlation when combining the signals of the two antennas to eliminate certain interference. The use of ICC can improve the speech quality and data throughput in situations with strong interference, for example, the network where tight frequency reuse is in place. ICC can suppress the interference within the GSM system and from other systems if correlation exists between the interfering signals received on diverse antennas. To enable the ICC algorithm of 2-antenna receive diversity, set ICTYP to ICC(ICC). A resource item license is required for enabling this algorithm.
3.2.3 EICC The GBFD-115821 EICC feature is developed from ICC. Generally, the interfering signals received from multiple antennas are both space correlated (among the antennas) and time correlated. The difference between ICC and EICC is that ICC considers only space correlation to eliminate interference whereas EICC considers both space correlation and time correlation to suppress and eliminate interference. EICC is used in high traffic network where tight frequency reuse is in place and in situations where the noise of a single interfering source is limited. The EICC performs better than ICC. Set STIRCALLOWED to YES(Yes) to select the EICC algorithm of 2-antenna receive diversity. This feature can be enabled only after you apply for a resource item license.
3.2.4 ADC The adaptive diversity combining (ADC) algorithm checks whether an ongoing call is in the interference-limited or noise-limited scenario. l
In the interference-limited scenario, the BTS uses EICC.
l
In the noise-limited scenario, the BTS uses MRC.
The ADC algorithm achieves favorable network performance in noise-limited and interferencelimited scenarios. Issue 02 (2012-08-30)
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GSM BSS 2-Antenna Receive Diversity Feature Parameter Description
3 Technical Description
To enable the ADC algorithm, set ADAICFLAG to ON(On). In addition, you can set ADAICADFLAG to ON(On) to improve the detection accuracy in adaptive scenarios. l
If STIRCALLOWED is set to YES(Yes), the ADC algorithm adaptively selects either EICC or MRC.
l
If STIRCALLOWED is set to NO(No), the ADC algorithm adaptively selects either ICC or MRC.
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GSM BSS 2-Antenna Receive Diversity Feature Parameter Description
4 Related Features
4
Related Features
Feature
Prerequisite Feature
Mutually Exclusive Feature
Affected Feature
2-Antenna Receive Diversity
None
None
None
MRC
MRFD-210604 2Antenna Receive Diversity
None
None
ICC
MRFD-210604 2Antenna Receive Diversity or GBFD-115903 4Way Receiver Diversity
None
None
EICC
MRFD-210604 2Antenna Receive Diversity
Automatic Frequency Correction (AFC)
None
NOTE This feature is disabled automatically after AFC is enabled. ADC
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MRFD-210604 2Antenna Receive Diversity
None
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None
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GSM BSS 2-Antenna Receive Diversity Feature Parameter Description
5
5 Impact on the Network
Impact on the Network
5.1 2-Antenna Receive Diversity 5.1.1 Impact on System Capacity This feature improves the BTS uplink receive quality. Its algorithms are classified into MRC, ICC, EICC, and ADC. For CS services, after uplink power control is enabled for MSs, this feature decreases the entire network interference and increases the traffic volume. For PS services, this feature increases the uplink throughput.
5.1.2 Impact on Network Performance This feature improves the BTS uplink receive quality.
5.2 MRC 5.2.1 Impact on System Capacity This algorithm improves the uplink receive quality. For CS services, after uplink power control is enabled for MSs, this algorithm decreases the entire network interference and increases the traffic volume. For PS services, this algorithm increases the uplink throughput.
5.2.2 Impact on Network Performance This algorithm improves the uplink receive quality.
5.3 ICC Issue 02 (2012-08-30)
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GSM BSS 2-Antenna Receive Diversity Feature Parameter Description
5 Impact on the Network
5.3.1 Impact on System Capacity Compared with the MRC algorithm, the ICC algorithm enhances the network anti-interference capability and improves the uplink receive quality. For CS services, after uplink power control is enabled for MSs, this algorithm decreases the entire network interference and increases the traffic volume. For PS services, this algorithm increases the uplink throughput.
5.3.2 Impact on Network Performance Compared with the MRC algorithm, the ICC algorithm enhances the network anti-interference capability and improves the uplink receive quality.
5.4 EICC 5.4.1 Impact on System Capacity Compared with the ICC algorithm, the EICC algorithm enhances the network anti-interference capability and improves the uplink receive quality. For CS services, after uplink power control is enabled for MSs, this algorithm decreases the entire network interference and increases the traffic volume. For PS services, this algorithm increases the uplink throughput.
5.4.2 Impact on Network Performance Compared with the ICC algorithm, the EICC algorithm enhances the network anti-interference capability and improves the uplink receive quality.
5.5 ADC 5.5.1 Impact on System Capacity This algorithm can adaptively select an appropriate combining algorithm based on interference scenarios on the live network. Compared with the fixed combining algorithm, this algorithm further improves the network anti-interference capability and uplink receive quality. For CS services, after uplink power control is enabled for MSs, this algorithm decreases the entire network interference and increases the traffic volume. For PS services, this algorithm increases the uplink throughput.
5.5.2 Impact on Network Performance This algorithm can adaptively select an appropriate combining algorithm based on interference scenarios on the live network. Therefore, this algorithm enhances the network anti-interference capability and improves the uplink receive quality. Issue 02 (2012-08-30)
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GSM BSS 2-Antenna Receive Diversity Feature Parameter Description
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6 Engineering Guidelines
Engineering Guidelines
6.1 When to Use 2-Antenna Receive Diversity 6.1.1 2-Antenna Receive Diversity Use this feature for outdoor BTSs.
6.1.2 MRC Algorithm Use the MRC algorithm in the following conditions: l
The live network is in noise-limited scenarios, for example, railway coverage or rural area coverage.
l
The licenses for the ICC and EICC algorithms have not been obtained.
6.1.3 ICC Algorithm Use the ICC algorithm in the following conditions: l
The live network is in interference-limited scenarios, for example, urban area coverage and tight frequency reuse scenarios with strong interference.
l
The license for the EICC algorithm has not been obtained.
6.1.4 EICC Algorithm You are advised to use the EICC algorithm in interference-limited scenarios, such as city coverage and tight frequency reuse scenarios with strong interference.
6.1.5 ADC Algorithm Use the ADC algorithm in the following conditions: l
It is uncertain whether the live network is in the noise-limited or interference-limited scenario.
l
Interference scenario changes take place.
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GSM BSS 2-Antenna Receive Diversity Feature Parameter Description
6 Engineering Guidelines
6.2 Information to Be Collected Before deploying this feature, collect the following information: l
Whether the cell is configured in 2-antenna receive mode
l
Frequency planning data
l
Cell coverage range
l
Traffic volume on the network
l
Whether there is interference in the radio environment
The MRC algorithm improves the network performance at the coverage edge when: l
The cell is configured in 2-antenna receive mode.
l
The network frequencies are loosely set.
l
The cell coverage is relatively large.
The ICC and EICC algorithms improve the network anti-interference capability when: l
The cell is configured in 2-antenna receive mode.
l
The network frequencies are tightly set.
l
The network interference is strong and traffic is heavy.
The ADC algorithm improves the uplink performance when: l
The cell is configured in 2-antenna receive mode.
l
The network environment is uncertain or varies with time.
These four algorithms are not applicable to cells in one-antenna receive mode.
6.3 Network Planning RF Planning N/A
Network Topology N/A
Hardware Planning The two RX channels of the TRXs must be connected to two antennas, or connected to a dualpolarized antenna.
6.4 Feature Deployment Issue 02 (2012-08-30)
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GSM BSS 2-Antenna Receive Diversity Feature Parameter Description
6 Engineering Guidelines
6.4.1 2-Antenna Receive Diversity For details about how to activate, verify, and deactivate this algorithm, see Configuring 2Antenna Receive Diversity.
6.4.2 Deploying MRC Activation Procedure Run the BSC6900 MML command SET GCELLSOFT with ICTYP set to MRC(MRC).
Verification Procedure Run the BSC6900 MML command LST GCELLSOFT to query the value of ICTYP. Expected result: If ICTYP is set to MRC(MRC), the MRC function has been enabled.
Deactivation Procedure Run the BSC6900 MML command SET GCELLSOFT with ICTYP set to ICC(ICC).
6.4.3 Deploying ICC For details about how to activate, verify, and deactivate this algorithm, see Configuring ICC.
6.4.4 Deploying EICC For details about how to activate, verify, and deactivate this algorithm, see Configuring EICC.
6.5 Performance Optimization Monitoring Observe network counters. For CS services, observe Uplink Quality (UL RxQual). If the counter deteriorates or remains unchanged after the 2-antenna receive diversity feature has been enabled, adjust the combining algorithms.
Parameter Optimization The ICC algorithm achieves favorable network performance in most scenarios. For scenarios without interference, the MRC algorithm is recommended. For scenarios with tight frequency reuse, heavy traffic, and strong interference, the EICC algorithm is recommended. If it is uncertain about the network interference scenarios, or interference scenario changes take place, use the ADC algorithm.
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GSM BSS 2-Antenna Receive Diversity Feature Parameter Description
7 Parameters
7
Parameters
Table 7-1 Parameter description Parameter ID
NE
MML Command
Feature ID
Feature Name
Description
ADAICADFL AG
BSC6900
SET GCELLSOFT
GBFD-115801
ICC
Meaning:Wheth er to enable the adaptive interference cancellation enhancement function. If this parameter is set to ON, the adaptive interference cancellation enhancement function is enabled. If this parameter is set to OFF, the adaptive interference cancellation enhancement function is not enabled. It is recommended that this parameter be set to ON when adaptive interference cancellation is used.
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GSM BSS 2-Antenna Receive Diversity Feature Parameter Description
Parameter ID
NE
MML Command
7 Parameters
Feature ID
Feature Name
Description GUI Value Range:OFF (Off), ON(On) Unit:None Actual Value Range:OFF, ON Default Value:OFF(Off)
ADAICFLAG
BSC6900
SET GCELLSOFT
GBFD-115801
ICC
Meaning:Wheth er to adaptively select the interference cancellation mode. If this parameter is set to ON, the BSC adaptively selects the interference cancellation mode. If this parameter is set to OFF, the BSC always selects the fixed interference cancellation mode. GUI Value Range:OFF (Off), ON(On) Unit:None Actual Value Range:OFF, ON Default Value:OFF(Off)
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GSM BSS 2-Antenna Receive Diversity Feature Parameter Description
7 Parameters
Parameter ID
NE
MML Command
Feature ID
Feature Name
Description
ICTYP
BSC6900
SET GCELLSOFT
GBFD-115801
ICC
Meaning:Interference cancellation mode. When tight frequency reuse is used, it is recommended that this parameter be set to ICC. When noises are restricted, it is recommended that this parameter be set to MRC. GUI Value Range:MRC (MRC), ICC (ICC) Unit:None Actual Value Range:MRC, ICC Default Value:MRC (MRC)
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GSM BSS 2-Antenna Receive Diversity Feature Parameter Description
7 Parameters
Parameter ID
NE
MML Command
Feature ID
Feature Name
Description
SndRcvMode
BSC6900
SET BTSRXUBP
GBFD-111202
O&M of BTS
Meaning:The connection mode between the DRRU and the antenna. GUI Value Range:SGL_A NTENNA (Single Feeder [1TX + 1RX]), SGLDOUBLE_ ANTENNA (Single Feeder [1TX + 2RX]), DOUBLE_ANT ENNA(Double Feeder[2TX + 2RX]), DOUBLEFOU R_ANTENNA (Double Feeder [2TX + 4RX]), DOUBLESING LE_ANTENNA (Double Feeder [1TX + 1RX]), DOUBLEDOU BLE_ANTENN A(Double Feeder[1TX + 2RX]) Unit:None Actual Value Range:SGL_A NTENNA, SGLDOUBLE_ ANTENNA, DOUBLE_ANT ENNA, DOUBLEFOU R_ANTENNA, DOUBLESING LE_ANTENNA , DOUBLEDOU BLE_ANTENN A
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GSM BSS 2-Antenna Receive Diversity Feature Parameter Description
Parameter ID
NE
MML Command
7 Parameters
Feature ID
Feature Name
Description Default Value:DOUBL E_ANTENNA (Double Feeder [2TX + 2RX])
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GSM BSS 2-Antenna Receive Diversity Feature Parameter Description
7 Parameters
Parameter ID
NE
MML Command
Feature ID
Feature Name
Description
SndRcvMode1
BSC6900
SET BTSRXUBP
GBFD-111202
O&M of BTS
Meaning:The connection mode between the DRFU and the antenna. GUI Value Range:SGL_A NTENNA (Single Feeder [1TX + 1RX]), SGLDOUBLE_ ANTENNA (Single Feeder [1TX + 2RX]), DOUBLE_ANT ENNA(Double Feeder[2TX + 2RX]), DOUBLEFOU R_ANTENNA (Double Feeder [2TX + 4RX]), DOUBLESING LE_ANTENNA (Double Feeder [1TX + 1RX]), DOUBLEDOU BLE_ANTENN A(Double Feeder[1TX + 2RX]) Unit:None Actual Value Range:SGL_A NTENNA, SGLDOUBLE_ ANTENNA, DOUBLE_ANT ENNA, DOUBLEFOU R_ANTENNA, DOUBLESING LE_ANTENNA , DOUBLEDOU BLE_ANTENN A
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GSM BSS 2-Antenna Receive Diversity Feature Parameter Description
Parameter ID
NE
MML Command
7 Parameters
Feature ID
Feature Name
Description Default Value:DOUBL E_ANTENNA (Double Feeder [2TX + 2RX])
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GSM BSS 2-Antenna Receive Diversity Feature Parameter Description
7 Parameters
Parameter ID
NE
MML Command
Feature ID
Feature Name
Description
SndRcvMode2
BSC6900
SET BTSRXUBP
GBFD-111202
O&M of BTS
Meaning:The connection mode between the MRRU/ GRRU and the antenna. GUI Value Range:SGL_A NTENNA (Single Feeder [1TX + 1RX]), SGLDOUBLE_ ANTENNA (Single Feeder [1TX + 2RX]), DOUBLE_ANT ENNA(Double Feeder[2TX + 2RX]), DOUBLEFOU R_ANTENNA (Double Feeder [2TX + 4RX]), DOUBLESING LE_ANTENNA (Double Feeder [1TX + 1RX]), DOUBLEDOU BLE_ANTENN A(Double Feeder[1TX + 2RX]), FOURDOUBL E_ANTENNA (Four Feeder [2TX + 2RX]), FOURDOUBL EFOUR_ANTE NNA(Four Feeder[2TX + 4RX]) Unit:None Actual Value Range:SGL_A NTENNA, SGLDOUBLE_ ANTENNA, DOUBLE_ANT ENNA,
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GSM BSS 2-Antenna Receive Diversity Feature Parameter Description
Parameter ID
NE
MML Command
7 Parameters
Feature ID
Feature Name
Description DOUBLEFOU R_ANTENNA, DOUBLESING LE_ANTENNA , DOUBLEDOU BLE_ANTENN A, FOURDOUBL E_ANTENNA, FOURDOUBL EFOUR_ANTE NNA Default Value:DOUBL E_ANTENNA (Double Feeder [2TX + 2RX])
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GSM BSS 2-Antenna Receive Diversity Feature Parameter Description
7 Parameters
Parameter ID
NE
MML Command
Feature ID
Feature Name
Description
SndRcvMode3
BSC6900
SET BTSRXUBP
GBFD-111202
O&M of BTS
Meaning:The connection mode between the MRFU/ GRFU and the antenna. GUI Value Range:SGL_A NTENNA (Single Feeder [1TX + 1RX]), SGLDOUBLE_ ANTENNA (Single Feeder [1TX + 2RX]), DOUBLE_ANT ENNA(Double Feeder[2TX + 2RX]), DOUBLEFOU R_ANTENNA (Double Feeder [2TX + 4RX]), DOUBLESING LE_ANTENNA (Double Feeder [1TX + 1RX]), DOUBLEDOU BLE_ANTENN A(Double Feeder[1TX + 2RX]) Unit:None Actual Value Range:SGL_A NTENNA, SGLDOUBLE_ ANTENNA, DOUBLE_ANT ENNA, DOUBLEFOU R_ANTENNA, DOUBLESING LE_ANTENNA , DOUBLEDOU BLE_ANTENN A
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GSM BSS 2-Antenna Receive Diversity Feature Parameter Description
Parameter ID
NE
MML Command
7 Parameters
Feature ID
Feature Name
Description Default Value:DOUBL E_ANTENNA (Double Feeder [2TX + 2RX])
SndRcvMode4
BSC6900
SET BTSRXUBP
GBFD-111202
O&M of BTS
Meaning:The connection mode between the BTS3900E and the antenna. GUI Value Range:SGL_A NTENNA (Single Feeder [1TX + 1RX]), DOUBLESING LE_ANTENNA (Double Feeder [1TX + 1RX]), DOUBLEDOU BLE_ANTENN A(Double Feeder[1TX + 2RX]) Unit:None Actual Value Range:SGL_A NTENNA, DOUBLESING LE_ANTENNA , DOUBLEDOU BLE_ANTENN A Default Value:SGL_AN TENNA(Single Feeder[1TX + 1RX])
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GSM BSS 2-Antenna Receive Diversity Feature Parameter Description
7 Parameters
Parameter ID
NE
MML Command
Feature ID
Feature Name
Description
STIRCALLO WED
BSC6900
SET GCELLSOFT
GBFD-115821
EICC
Meaning:Wheth er to enable the EICC algorithm. Enhanced Interference Rejection Combining combines the signals received by multiple antennas to obtain better signals. EICC is mainly used in heavy-traffic network where tight frequency reuse is in place. GUI Value Range:NO(No), YES(Yes) Unit:None Actual Value Range:NO, YES Default Value:NO(No)
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GSM BSS 2-Antenna Receive Diversity Feature Parameter Description
8 Counters
8
Counters
There are no specific counters associated with this feature.
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GSM BSS 2-Antenna Receive Diversity Feature Parameter Description
9 Glossary
9
Glossary
For the acronyms, abbreviations, terms, and definitions, see the Glossary.
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GSM BSS 2-Antenna Receive Diversity Feature Parameter Description
10
10 Reference Documents
Reference Documents
1.
3GPP TS 25.101, "User Equipment (UE) radio transmission and reception (FDD)"
2.
3GPP TS 25.211, "Physical channels and mapping of transport channels onto physical channels (FDD)"
3.
3GPP TS 25.306, "UE Radio Access capabilities"
4.
3GPP TS 25.308, "UTRA High Speed Downlink Packet Access (HSPDA); Overall description"
5.
3GPP TS 25.321, "Medium Access Control (MAC) protocol specification"
6.
BSC6900 Feature List
7.
BSC6900 Basic Feature Description
8.
BSC6900 GSM Parameter Reference
9.
BSC6900 GSM MML Command Reference
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