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GSM BSS
GBSS15.0
2-Antenna Receive Diversity Feature
Parameter Description
Issue 02
Date 2013-11-15
HUAWEI TECHNOLOGIES CO., LTD.
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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: Huawei Industrial Base
Bantian, Longgang
Shenzhen 518129
People's Republic of China
Website: http://www.huawei.com
Email: [email protected]
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Copyright Huawei Technologies Co., Ltd.
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Contents
1 About This Document..................................................................................................................1
1.1 Scope..............................................................................................................................................................................1
1.2 Intended Audience..........................................................................................................................................................1
1.3 Change History...............................................................................................................................................................1
2 Overview.........................................................................................................................................4
2.1 Introduction....................................................................................................................................................................4
2.2 Benefits...........................................................................................................................................................................4
2.3 NEs Supporting the Feature............................................................................................................................................4
3 Technical Description...................................................................................................................6
3.1 Technical Principle.........................................................................................................................................................6
3.2 Diversity Combining Algorithms...................................................................................................................................7
3.2.1 MRC............................................................................................................................................................................7
3.2.2 ICC...............................................................................................................................................................................7
3.2.3 EICC............................................................................................................................................................................7
3.2.4 ADC.............................................................................................................................................................................8
4 Related Features.............................................................................................................................9
5 NetworkImpact...........................................................................................................................11
5.1 2-AntennaReceive Diversity........................................................................................................................................11
5.1.1 System Capacity........................................................................................................................................................11
5.1.2 Network Performance................................................................................................................................................11
5.2 MRC.............................................................................................................................................................................11
5.2.1 System Capacity........................................................................................................................................................11
5.2.2 NetworkPerformance................................................................................................................................................11
5.3 ICC................................................................................................................................................................................11
5.3.1 System Capacity........................................................................................................................................................12
5.3.2 NetworkPerformance................................................................................................................................................12
5.4 EICC.............................................................................................................................................................................12
5.4.1 System Capacity........................................................................................................................................................12
5.4.2 Network Performance................................................................................................................................................12
5.5 ADC..............................................................................................................................................................................12
5.5.1 System Capacity........................................................................................................................................................12
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5.5.2 Network Performance................................................................................................................................................12
6 Engineering Guidelines.............................................................................................................13
6.1 When to Use 2-Antenna Receive Diversity..................................................................................................................13
6.1.1 2-Antenna Receive Diversity.....................................................................................................................................136.1.2 MRC..........................................................................................................................................................................13
6.1.3 ICC.............................................................................................................................................................................13
6.1.4 EICC..........................................................................................................................................................................13
6.1.5 ADC...........................................................................................................................................................................15
6.2 Required Information...................................................................................................................................................15
6.3 Planning........................................................................................................................................................................16
6.4 Deploying 2-Antenna Receive Diversity (GBTS)........................................................................................................16
6.4.1 Deployment Requirements........................................................................................................................................16
6.4.2 Initial Configuration..................................................................................................................................................176.4.3 Activation Observation..............................................................................................................................................18
6.5 Deploying2-Antenna Receive Diversity (eGBTS)......................................................................................................19
6.5.1 Deployment Requirements........................................................................................................................................19
6.5.2 Initial Configuration..................................................................................................................................................19
6.5.3 Activation Observation..............................................................................................................................................21
6.6 DeployingEICC...........................................................................................................................................................21
6.6.1 Deployment Requirements........................................................................................................................................21
6.6.2 Activation..................................................................................................................................................................22
6.6.3 Activation Observation..............................................................................................................................................236.6.4 Deactivation...............................................................................................................................................................23
6.7 Performance Monitoring...............................................................................................................................................24
6.8 ParameterOptimization................................................................................................................................................24
6.9 Troubleshooting............................................................................................................................................................24
7 Parameters.....................................................................................................................................25
8 Counters........................................................................................................................................52
9 Glossary.........................................................................................................................................53
10 Reference Documents...............................................................................................................54
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1About This Document
1.1 Scope
This document describes 2-Antenna Receive Diversity, including its technical principles, related
features, network impact, and engineering guidelines.
This document covers the following features:
l GBFD-115821 EICC
l MRFD-210604 2-Antenna Receive Diversity
1.2 Intended Audience
This document is intended for personnel who:
l Need to understand the features described herein
l Work with Huawei products
1.3 Change History
This section provides information about the changes in different document versions. There aretwo types of changes, which are defined as follows:
l Feature change
Changes in features of a specific product version
l Editorial change
Changes in wording or addition of information that was not described in the earlier version
02 (2013-11-15)
This issue includes the following changes.
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Change Type Change Description ParameterChange
Feature change Added descriptions about settingADAICFLAG
(BSC6900,BSC6910)andADAICADFLAG(BSC6900,BSC6910)to ON(On)when you
enable the ICC or EICC algorithm in the following
contents:
3.2.4 ADC
6.1.5 ADC
6.2 Required Information
6.6.2 Activation
None
Editorial change Optimized the 3.1 Technical Principlesection. Added the
following
parameters:
l RCVMD
(BSC6900,
BSC6910,
eGBTS)
l SndRcvMode
(BSC6900,
BSC6910)
l SndRcvMode1
(BSC6900,
BSC6910)l SndRcvMode2
(BSC6900,
BSC6910)
l SndRcvMode3
(BSC6900,
BSC6910)
l ANTNUM
l ANTTYPE1
l ANTTYPE2
l ANTTYPE3
l ANTTYPE4
l ANTTYPE5
l ANTTYPE6
l ANTTYPE7
l ANTTYPE8
01 (2013-05-06)
This issue includes the following changes.
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Change Type Change Description ParameterChange
Feature change None None
Editorial change l Added descriptions about the method for
selecting an application scenario in 6.1.4
EICC.
l Updated 4 Related Features.
l Optimized the following contents:
6.4.3 Activation Observation
6.5.3 Activation Observation
6.6.3 Activation Observation
None
Draft A (2013-02-27)
Compared with Issue 02 (2012-08-30) of GBSS14.0, Draft A (2013-02-27) of GBSS15.0
includes the following changes.
Change Type Change Description ParameterChange
Feature change l Added descriptions about the eGBTS.
l Added 2.3 NEs Supporting the Feature.
None
Editorial change Optimized 6 Engineering Guidelines. None
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2Overview
2.1 Introduction
In a wireless communications system, multipath propagation is the phenomenon that results in
radio signals reaching the receiving antenna by two or more paths. Multipath propagation causes
the amplitude, phase, and angle of receive (RX) signals to fluctuate, which is known as multipath
fading. It deteriorates the quality of RX signals.
As one of the technologies applied to counteract multipath fading, the diversity technology in
the GSM system consists of time diversity, frequency diversity, and space diversity. With space
diversity, two or more antennas are used at the RX end to receive signals from the same source.
The RX signals are then processed and combined to minimize the impact of multipath fading.
This document describes the technology that enables a BTS to use two antennas (or two
polarization ends of the same polarization antenna) to receive signals from the same source. The
technology is implemented by the 2-Antenna Receive Diversity feature.
2.2 Benefits
The 2-Antenna Receive Diversity feature improves uplink receive quality, receiver sensitivity,
and uplink coverage for BTSs. As this feature does not require additional hardware installation
or algorithm implementation, it reduces the capital expenditure (CAPEX) for telecom operators.
2.3 NEs Supporting the Feature
Table 2-1NEs supporting the feature
Feature BSC6900 BSC6910 GBTS eGBTS
2-Antenna Receive Diversity
EICC
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NOTE
indicates that the NE supports this feature. indicates that the NE does not support this feature.
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3Technical 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 3-1shows the working
principle of 2-antenna receive diversity.
Figure 3-1Working 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 3-1the two RX
channels correspond to the main and diversity RX channels of the TRX.
The 2-Antenna Receive Diversity feature is enabled by settingRCVMD
(BSC6900,BSC6910,eGBTS)to MAINDIVERSITY(Main Diversity)and configuring two
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receive antennas for each related device. When you configure receive antennas, ensure that the
following conditions are met:
l For a GBTS, the connection mode between RF modules and antennas is set to the two-way
receive mode by settingSndRcvMode(BSC6900,BSC6910),SndRcvMode1
(BSC6900,BSC6910),SndRcvMode2(BSC6900,BSC6910), andSndRcvMode3
(BSC6900,BSC6910). Additionally, the connection mode of antennas is consistent with
the actual connections.
l For an eGBTS, two receive antennas are configured by settingANTNUM. The send and
receive mode of the two receive antennas is set to RX_MODE(RX)by setting
ANTTYPE1andANTTYPE2.
NOTE
When the value ofANTNUM(the maximum value is 8) is greater than 2, set all the following
parameters for each antenna:ANTTYPE1,ANTTYPE2,ANTTYPE3,ANTTYPE4,ANTTYPE5,
ANTTYPE6,ANTTYPE7, andANTTYPE8.
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, setICTYP(BSC6900,BSC6910)
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, setICTYP(BSC6900,BSC6910)
toICC(ICC).
A resource item license is required for enabling this algorithm.
3.2.3 EICC
The GBFD-115821 EICC feature is developed based on ICC. Generally, the interfering signals
received from multiple antennas are associated with co-channel interference (among antennas)
and intersymbol interference (ISI).
The difference between ICC and EICC is as follows:
ICC considers only space correlation to eliminate interference.
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EICC considers both space correlation and time correlation. In addition, EICC combines signals
by constructing the multidimensional combining coefficient matrix based on the maximum
signal noise ratio (SNR) criteria. This suppresses or even eliminates interference and helps
operators provide optimized uplink signals.
EICC is used in heavy traffic network where tight frequency reuse is in place and in situations
where a single interfering source exists. The EICC performs better than ICC.
The EICC feature requires the matrix of interference, which is calculated on the basis of the
training sequence of wanted signals. For each channel of RX signals, the network estimates a
channel model based on the training sequence of signals, reconstructs the wanted signals, and
subtracts the wanted signals from the RX signals to obtain the interfering signals. The network
then estimates the matrix of each interfering signal and analyzes the statistical dependency of
these interfering signals. Based on the statistical dependency, some interference is counteracted
during the combination of RX signals to maximize the combination gain.
SetSTIRCALLOWED(BSC6900,BSC6910)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 callis in the
interference-limited or noise-limited scenario.
l In the interference-limited scenario, the BTS uses ICC or EICC.
l In the noise-limited scenario, the BTS uses MRC.
The ADC algorithm achieves favorable network performance in noise-limited and interference-limited scenarios.
To enable the ADC algorithm, setADAICFLAG(BSC6900,BSC6910)to ON(On). In addition,
you can setADAICADFLAG(BSC6900,BSC6910)to ON(On)to improve the detection
accuracy in adaptive scenarios.
l When you enable the ICC or EICC algorithm, setADAICFLAG(BSC6900,BSC6910)and
ADAICADFLAG(BSC6900,BSC6910)to ON(On)so that the MRC, ICC, and EICC
algorithms can be widely applied. IfSTIRCALLOWED(BSC6900,BSC6910)is set to YES
(Yes), the ADC algorithm adaptively selects either EICC or MRC.
l IfSTIRCALLOWED(BSC6900,BSC6910)is set to NO(No)andICTYP
(BSC6900,BSC6910)is set to ICC(ICC), the ADC algorithm adaptively selects either ICCor MRC.
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4Related FeaturesTable 4-1Related features
Feature PrerequisiteFeature
MutuallyExclusive Feature
Impacted Feature
2-Antenna Receive
Diversity
None None None
MRC MRFD-210604 2-
Antenna Receive
Diversity or
GBFD-115903 4-
Way Receiver
Diversity
None None
ICC MRFD-210604 2-
Antenna Receive
Diversity or
GBFD-115903 4-
Way Receiver
Diversity
None It is recommended
that this feature be
used with the
GBFD-118201 Soft-
Synchronized
Network feature or
GBFD-510401 BTS
GPS Synchronization
feature.
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Feature PrerequisiteFeature
MutuallyExclusive Feature
Impacted Feature
EICC MRFD-210604 2-
Antenna ReceiveDiversity
GBFD-510101
AutomaticFrequency
Correction (AFC)
GBFD-510105 PS
AFC
NOTE
This feature is
disabled
automatically after the
GBFD-510101
Automatic Frequency
Correction (AFC)
feature or theGBFD-510105 PS
AFC feature is
enabled.
It is recommended
that this feature beused with the
GBFD-118201 Soft-
Synchronized
Network feature or
GBFD-510401 BTS
GPS Synchronization
feature.
Adaptive diversity
combination
MRFD-210604 2-
Antenna Receive
Diversity
None None
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5Network Impact
5.1 2-Antenna Receive Diversity
5.1.1 System Capacity
The 2-Antenna Receive Diversity feature improves uplink receive quality for BTSs by using the
MRC, ICC, EICC, and adaptive diversity combination algorithms.
This feature reduces the interference on the entire network and increases traffic when an MS
enables uplink power control during a CS service.
This feature increases the uplink PS throughput.
5.1.2 Network Performance
This feature improves uplink receive quality for BTSs.
5.2 MRC
5.2.1 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 Network Performance
This algorithm improves the uplink receive quality.
5.3 ICC
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5.3.1 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 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 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 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 System Capacity
This algorithm can adaptively select an appropriate combining algorithm based on interferencescenarios 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 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.
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6Engineering 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
Use the MRC algorithm in the following conditions:
l The live network is in noise-limited scenarios, for example, railway coverage or rural areacoverage.
l The licenses for the ICC and EICC algorithms have not been obtained.
6.1.3 ICC
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
You are advised to use the EICC algorithm in interference-limited scenarios, such as city
coverage and tight frequency reuse scenarios with strong interference.
The method for selecting an application scenario is as follows:
1. Check whether it is a tight frequency reuse scenario or a densely populated urban scenario.
2. If 1is met, measure the counters in the function subsets "TCHF Receive Level Measurement
per TRX" and "TCHH Receive Level Measurement per TRX".
3. Collect the TRX-level uplink signal traffic statistics obtained in 2into a two-dimensional
table to form cell-level measurement data, as shown in Figure 6-1. The formula is as
follows:
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l Number of times reporting good receive quality
l Number of times reporting weak coverage
l Number of times reporting weak interference
l Number of times reporting strong interference
Figure 6-1RxLev-RxQual measurement data
NOTE
In Figure 6-1, RxQual represents the uplink receive quality, and RxLev represents the uplink receive
level.
4. Classify the cells according to the uplink high quality indicator (HQI), that is, the proportion
of RxQual levels 0 to 3, and the measurement data in Figure 6-1, as shown in Table 6-1.
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Table 6-1Cell classification
Cell Type Conditions
Strong
interference
l HQI < 96%
l Number of times reporting strong interference + Number of times
reporting weak interference Number of times reporting weak
coverage
l Proportion of the number of times reporting strong interference
2%
Weak
interference
l HQI < 96%
l Number of times reporting strong interference + Number of times
reporting weak interference Number of times reporting weak
coverage
l Proportion of the number of times reporting strong interference
2%
Weak coverage l HQI < 96%
l Number of times reporting strong interference + Number of times
reporting weak interference Number of times reporting weak
coverage
Good receive
quality
HQI 96%
The preceding cells with strong and weak interference are all cells where severe interference
is identified. It is recommended that the EICC feature be enabled in these cells.
6.1.5 ADC
When you enable the ICC or EICC algorithm, enable the ADC algorithm so that the MRC, ICC,
and EICC algorithms can be widely applied. That is, setADAICFLAG(BSC6900,BSC6910)
andADAICADFLAG(BSC6900,BSC6910)to ON(On).
6.2 Required InformationBefore 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.
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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.
If interference or noises occur on the network, the ICC or EICC algorithm improves network
performance only when both of the following conditions are met:
l The ICC or EICC algorithm is enabled.
l ADAICFLAG(BSC6900,BSC6910)andADAICADFLAG(BSC6900,BSC6910)are set to
ON(On).
These four algorithms are not applicable to cells in one-antenna receive mode.
6.3 Planning
RF Planning
N/A
Network Planning
N/A
Hardware Planning
The two RX channels of a TRX board must be connected to two antennas or a dual-polarized
antenna.
6.4 Deploying 2-Antenna Receive Diversity (GBTS)
6.4.1 Deployment Requirements
Table 6-2Deployment requirements
Aspect Requirement
Related features See 4 Related Features.
BSC None
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Aspect Requirement
BTS l The DATM is required for the BTS3006C and BTS3002E to support
this feature.
l The DATU is required for the BTS3012 and BTS3012AE to supportthis feature.
l The GATM is required for the BTS3900, BTS3900A, BTS3900L,
and BTS3900AL (DRFU) to support this feature.
GSM networking None
MS None
MSC None
License None
Others None
6.4.2 Initial Configuration
Using MML Commands
Step 1 On the BSC LMT, run the SET BTSRXUBPcommand with the send and receive mode set tothe two-way receive mode for RF boards.
NOTE
The send and receive mode varies depending on the type and quantity of RF boards. It can be set to
SGLDOUBLE_ANTENNA(Single Feeder[1TX + 2RX]), DOUBLE_ANTENNA(Double Feeder
[2TX + 2RX]), or DOUBLEDOUBLE_ANTENNA(Double Feeder[1TX + 2RX]).
Step 2 Run the SET GTRXDEV command with Receive Modeset to MAINDIVERSITY(MainDiversity).
----End
MML Command Examples
SET BTSRXUBP: IDTYPE=BYID, BTSID=153, RXUIDTYPE=SRNSN, CN=0, SRN=4,SN=0, RXUTYPE=DRFU, SndRcvMode1=DOUBLE_ANTENNA;
SET GTRXDEV: IDTYPE=BYID, TRXID=0, RCVMD=MAINDIVERSITY;
Using the CME
NOTE
When configuring the 2-Antenna Receive Diversityfeature on the CME, you must perform a single
configuration first, and then perform batch modifications if required. You must perform a single
configuration for a parameter before batch modifications of the parameter. You are advised to perform
batch modifications before logging out of the parameter setting interface.
Step 1 Configure a single object on the CME. (CME single configuration)
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Set parameters on the CME configuration interface according to the operation sequence
described in Table 6-3. For the method of performing the CME single configuration, see CME
Single Configuration Operation Guide.
Step 2 (Optional) Modify objects in batches on the CME. (CME batch modification center)
To modify objects, such as BSCs, BTSs, cells, and TRXs, in batches, click the icon on the
CME configuration interface to start the batch modification wizard. For the method of
performing batch modifications through the CME batch modification center, press F1on the
wizard interface to obtain online help.
----End
Table 6-3Configuring the parameter on the CME
SN ManagedObject(MO)
NE Parameter Name ParameterID
Configurable in CMEBatchModification Center
1 BTSRXUBP BSC6900/
BSC6910
DRRU Sending
Receiving Mode
SndRcvMode No
BSC6900/
BSC6910
DRFU Sending
Receiving Mode
SndRcvMode
1
BSC6900/
BSC6910
MRRU/GRRU
Sending ReceivingMode
SndRcvMode
2
BSC6900/
BSC6910
MRFU/GRFU
Sending Receiving
Mode
SndRcvMode
3
BSC6900/
BSC6910
BTS3900E Sending
Receiving Mode
SndRcvMode
4
2 GTRXDEV BSC6900/
BSC6910
Receive Mode RCVMD Yes
6.4.3 Activation Observation
Step 1 Run the SET BTSRXUBPcommand with the send and receive mode set to the single-wayreceive mode for RF boards.
Step 2 Record the counters related to uplink receive quality in the "Receive Quality Measurement perTRX" function subset. Calculate the percentage of the number of MRs on the uplink (mean
receive quality rank 0).
Percentage of the number of MRs on the uplink (mean receive quality rank 0) =
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Step 3 On the BSC LMT, run the SET BTSRXUBPcommand with the send and receive mode set tothe two-way receive mode for RF boards.
Step 4 Run the SET GTRXDEV command with Receive Modeset to MAINDIVERSITY(MainDiversity).
Step 5 Repeat Step 2.
Step 6 Compare the measured two percentages.
Expected result: The percentage in Step 5is higher than that in Step 2.
----End
6.5 Deploying 2-Antenna Receive Diversity (eGBTS)
6.5.1 Deployment Requirements
Table 6-4Deployment requirements
Aspect Requirement
Related features See 4 Related Features.
BSC None
BTS None
GSM networking None
MS None
MSC None
License None
Others None
6.5.2 Initial Configuration
Using MML Commands
Step 1 On the BTS LMT, run the ADD SECTOREQMcommand. In this step, set AntennaNumberto 2and set Antenna RX/TX Modefor the two antennas to RXTX_MODE(RX And
TX)and RX_MODE(RX), respectively.
Step 2 Run the ADD GTRXGROUPcommand with Receiving Modeset to MAINDIVERSITY(Main Diversity).
----End
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MML Command Examples
ADD SECTOREQM: SECTOREQMID=0, SECTORID=0, ANTNUM=2, ANT1CN=0,
ANT1SRN=60, ANT1SN=0, ANT1N=R0A, ANTTYPE1=RXTX_MODE, ANT2CN=0,
ANT2SRN=60, ANT2SN=0, ANT2N=R0B, ANTTYPE2=RX_MODE;
ADD GTRXGROUP: GTRXGROUPID=0,GLOCELLID=0, RCVMD= MAINDIVERSITY;
Using the CME
NOTE
When configuring the 2-Antenna Receive Diversityfeature on the CME, you must perform a single
configuration first, and then perform batch modifications if required. You must perform a single
configuration for a parameter before batch modifications of the parameter. You are advised to perform
batch modifications before logging out of the parameter setting interface.
Step 1 Configure a single object on the CME. (CME single configuration)
Set parameters on the CME configuration interface according to the operation sequence
described in Table 6-5. For the method of performing the CME single configuration, see CME
Single Configuration Operation Guide.
Step 2 (Optional) Modify objects in batches on the CME. (CME batch modification center)
To modify objects, such as BSCs, BTSs, cells, and TRXs, in batches, click the icon on the
CME configuration interface to start the batch modification wizard. For the method of
performing batch modifications through the CME batch modification center, press F1on the
wizard interface to obtain online help.
----End
Table 6-5Configuring the parameter on the CME
SN MO NE Parameter Name Parameter ID Configurable in CMEBatchModification Center
1 SECTOREQM eGBTS Antenna Number ANTNUM Yes
eGBTS Antenna 1 RX/TXMode ANTTYPE1
eGBTS Antenna 2 RX/TX
Mode
ANTTYPE2
2 GTrxGroup eGBTS Receiving Mode RCVMD Yes
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6.5.3 Activation Observation
Step 1 On the BTS LMT, run the ADD SECTOREQMcommand. In this step, set AntennaNumberto 2and set Antenna RX/TX Modeto RX_MODE(RX)for one antenna and to
TX_MODE(TX)for the other.
Step 2 Record the counters related to uplink receive quality in the "Receive Quality Measurement perTRX" function subset. Calculate the percentage of the number of MRs on the uplink (mean
receive quality rank 0).
Percentage of the number of MRs on the uplink (mean receive quality rank 0) =
Step 3 On the BTS LMT, run the ADD SECTOREQMcommand. In this step, set Antenna
Numberto2and set Antenna RX/TX Modefor the two antennas to RXTX_MODE(RX AndTX) and RX_MODE(RX), respectively.
Step 4 Run the ADD GTRXGROUPcommand with Receiving Modeset to MAINDIVERSITY(Main Diversity).
Step 5 Repeat Step 2.
Step 6 Compare the measured two percentages.
Expected result: The percentage in Step 5is higher than that in Step 2.
----End
6.6 Deploying EICC
6.6.1 Deployment Requirements
Table 6-6Deployment requirements
Aspect Requirement
Related features See 4 Related Features.
BSC None
BTS l The following BTSs do not support this feature: BTS3012 (QTRU),
BTS3012AE (QTRU), BTS3900E, and BTS3900B.
l RRU3008 V1 and RRU3908 V1 that are configured with more than
four carriers do not support this feature.
GSM networking None
MS None
MSC None
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Aspect Requirement
License The license controlling this feature has been activated. For details on how
to activate the license, seeLicense Management Feature Parameter
Description. For details about license items, seeLicense Control ItemDescription.
Others None
6.6.2 Activation
Using MML Commands
On the BSC LMT, run the SET GCELLSOFTcommand with its parameters set as follows:
l Set EICC Allowedto YES(Yes).
l Set Interference Cancel Mode Adaptationto ON(On).
l Set Enhanced Interference Cancel Mode Adaptationto ON(On).
MML Command Examples
SET GCELLSOFT: IDTYPE=BYID, CELLID=0, STIRCALLOWED=YES,
ADAICFLAG=ON, ADAICADFLAG=ON;
Using the CME
NOTE
When configuring the EICC feature on the CME, you must perform a single configuration first, and then
perform batch modifications if required. You must perform a single configuration for a parameter before
batch modifications of the parameter. You are advised to perform batch modifications before logging out
of the parameter setting interface.
Step 1 Configure a single object on the CME. (CME single configuration)
Set parameters on the CME configuration interface according to the operation sequence
described in Table 6-7. For the method of performing the CME single configuration, see CMESingle Configuration Operation Guide.
Step 2 (Optional) Modify objects in batches on the CME. (CME batch modification center)
To modify objects, such as BSCs, BTSs, cells, and TRXs, in batches, click the icon on the
CME configuration interface to start the batch modification wizard. For the method of
performing batch modifications through the CME batch modification center, press F1on the
wizard interface to obtain online help.
----End
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Table 6-7Configuring the parameter on the CME
SN MO NE ParameterName
Parameter ID Configurablein CME BatchModificationCenter
1 GCELLSOFT BSC6900/
BSC6910
EICC Allowed STIRCALLOW
ED
Yes
Interference
Cancel Mode
Adaptation
ADAICFLAG
Enhanced
Interference
Cancel Mode
Adaptation
ADAICADFL
AG
6.6.3 Activation Observation
Step 1 Use an MS to load files using FTP on a live network affected by interference, and observe theupload speed. If the EICC feature is enabled, the upload speed improves. If the EICC feature is
disabled, the upload speed reduces.
Step 2 Use an MS to initiate a call on a live network affected by interference. Record the counters
related to uplink receive quality in the "Receive Quality Measurement per TRX" function subset.Calculate the percentage of the number of MRs on the uplink (mean receive quality rank 0).
Percentage of the number of MRs on the uplink (mean receive quality rank 0) =
If the EICC feature is enabled, the percentage is high, indicating that the conversation quality is
good. If the EICC feature is disabled, the percentage is low, indicating that the conversation
quality is poor.
----End
6.6.4 Deactivation
Using MML Commands
On the BSC LMT, run the SET GCELLSOFTcommand with EICC Allowedset to NO
(No).
MML Command Examples
SET GCELLSOFT: IDTYPE=BYID, CELLID=0, STIRCALLOWED=NO;
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Using the CME
NOTE
When configuring the EICC feature on the CME, you must perform a single configuration first, and then
perform batch modifications if required. You must perform a single configuration for a parameter before
batch modifications of the parameter. You are advised to perform batch modifications before logging out
of the parameter setting interface.
Step 1 Configure a single object on the CME. (CME single configuration)
Set parameters on the CME configuration interface according to the operation sequence
described in Table 6-8. For the method of performing the CME single configuration, see CME
Single Configuration Operation Guide.
Step 2 (Optional) Modify objects in batches on the CME. (CME batch modification center)
To modify objects, such as BSCs, BTSs, cells, and TRXs, in batches, click the icon on theCME configuration interface to start the batch modification wizard. For the method of
performing batch modifications through the CME batch modification center, press F1on the
wizard interface to obtain online help.
----End
Table 6-8Configuring the parameter on the CME
SN MO NE ParameterName
Parameter ID Configurablein CME BatchModification
Center
1 GCELLSOFT BSC6900/
BSC6910
EICC
Allowed
STIRCALLOWED Yes
6.7 Performance Monitoring
Observe the Uplink Quality (UL RxQual) counter for CS services. If the counter remains
unchanged or even deteriorates after the 2-Antenna Receive Diversity feature is enabled, use
another diversity combination algorithm instead.
6.8 Parameter Optimization
None
6.9 Troubleshooting
None
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7ParametersTable 7-1GSM: Parameter description
Parameter ID NE MMLCommand
Feature ID Feature Name Description
ADAICFLAG BSC6900 SET
GCELLSOFT
GBFD-115821
GBFD-115801
EICC
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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Parameter ID NE MMLCommand
Feature ID Feature Name Description
ADAICFLAG BSC6910 SET
GCELLSOFT
GBFD-115821
GBFD-115801
EICC
ICC
Meaning:Wheth
er to adaptivelyselect 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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Parameter ID NE MMLCommand
Feature ID Feature Name Description
ADAICADFL
AG
BSC6900 SET
GCELLSOFT
MRFD-210604
GBFD-115801
2-Antenna
ReceiveDiversity
ICC
Meaning:Wheth
er to enable theadaptive
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 thisparameter be set
to ON when
adaptive
interference
cancellation is
used.
GUI Value
Range:OFF
(Off), ON(On)
Unit:None
Actual Value
Range:OFF, ON
Default
Value:OFF(Off)
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Parameter ID NE MMLCommand
Feature ID Feature Name Description
ADAICADFL
AG
BSC6910 SET
GCELLSOFT
MRFD-210604
GBFD-115801
2-Antenna
ReceiveDiversity
ICC
Meaning:Wheth
er to enable theadaptive
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 thisparameter be set
to ON when
adaptive
interference
cancellation is
used.
GUI Value
Range:OFF
(Off), ON(On)
Unit:None
Actual Value
Range:OFF, ON
Default
Value:OFF(Off)
GSM BSS
2-Antenna Receive Diversity Feature Parameter Description 7 Parameters
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Parameter ID NE MMLCommand
Feature ID Feature Name Description
RCVMD BSC6900 SET
GTRXDEV
MRFD-210301
GBFD-115903
Configuration
Management4-Way Receiver
Diversity
Meaning:RF
receive mode ofthe TRX. The
BTS3012,
BTS3012AE,
BTS3012II,
BTS3006C, and
BTS3002E do
not support
Main Diversity.
The DBS3900
GSM and
BTS3900 GSM
support Four
Diversity
Receiver and
Main Diversity.
eGBTS do not
support this
parameter.
GUI Value
Range:INDEPE
NDENT
(Independent
Receiver),DIVIDING
(Dividing
Receiver),
FOURDIVERSI
TY(Four
Diversity
Receiver),
MAINDIVERSI
TY(Main
Diversity),
NONE(None)Unit:None
Actual Value
Range:INDEPE
NDENT,
DIVIDING,
FOURDIVERSI
TY,
MAINDIVERSI
TY, NONE
Default
Value:INDEPE
GSM BSS
2-Antenna Receive Diversity Feature Parameter Description 7 Parameters
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Parameter ID NE MMLCommand
Feature ID Feature Name Description
NDENT
(IndependentReceiver)
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Parameter ID NE MMLCommand
Feature ID Feature Name Description
RCVMD BSC6910 SET
GTRXDEV
MRFD-210301
GBFD-115903
Configuration
Management4-Way Receiver
Diversity
Meaning:RF
receive mode ofthe TRX. The
BTS3012,
BTS3012AE,
BTS3012II,
BTS3006C, and
BTS3002E do
not support
Main Diversity.
The DBS3900
GSM and
BTS3900 GSM
support Four
Diversity
Receiver and
Main Diversity.
eGBTS do not
support this
parameter.
GUI Value
Range:INDEPE
NDENT
(Independent
Receiver),DIVIDING
(Dividing
Receiver),
FOURDIVERSI
TY(Four
Diversity
Receiver),
MAINDIVERSI
TY(Main
Diversity),
NONE(None)Unit:None
Actual Value
Range:INDEPE
NDENT,
DIVIDING,
FOURDIVERSI
TY,
MAINDIVERSI
TY, NONE
Default
Value:INDEPE
GSM BSS
2-Antenna Receive Diversity Feature Parameter Description 7 Parameters
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Parameter ID NE MMLCommand
Feature ID Feature Name Description
NDENT
(IndependentReceiver)
RCVMD BTS3900 ADD
GTRXGROUP
MOD
GTRXGROUP
LST
GTRXGROUP
MRFD-210301
MRFD-210604
Configuration
Management
2-Antenna
Receive
Diversity
Meaning:Indi-
cates the
receiving mode
of the TRX
group.
GUI Value
Range:SINGLE
RECV(Single
Receiver),
MAINDIVERSITY(Main
Diversity)
Unit:None
Actual Value
Range:SINGLE
RECV,
MAINDIVERSI
TY
Default
Value:MAINDIVERSITY
(Main
Diversity)
GSM BSS
2-Antenna Receive Diversity Feature Parameter Description 7 Parameters
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Parameter ID NE MMLCommand
Feature ID Feature Name Description
SndRcvMode BSC6900 SET
BTSRXUBP
GBFD-111202 O&M of BTS Meaning:The
connectionmode 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
GSM BSS
2-Antenna Receive Diversity Feature Parameter Description 7 Parameters
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Parameter ID NE MMLCommand
Feature ID Feature Name Description
Default
Value:DOUBLE_ANTENNA
(Double Feeder
[2TX + 2RX])
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Parameter ID NE MMLCommand
Feature ID Feature Name Description
SndRcvMode BSC6910 SET
BTSRXUBP
GBFD-111202 O&M of BTS Meaning:The
connectionmode 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
GSM BSS
2-Antenna Receive Diversity Feature Parameter Description 7 Parameters
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Parameter ID NE MMLCommand
Feature ID Feature Name Description
Default
Value:DOUBLE_ANTENNA
(Double Feeder
[2TX + 2RX])
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Parameter ID NE MMLCommand
Feature ID Feature Name Description
SndRcvMode1 BSC6900 SET
BTSRXUBP
GBFD-111202 O&M of BTS Meaning:The
connectionmode 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
GSM BSS
2-Antenna Receive Diversity Feature Parameter Description 7 Parameters
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Parameter ID NE MMLCommand
Feature ID Feature Name Description
Default
Value:DOUBLE_ANTENNA
(Double Feeder
[2TX + 2RX])
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Parameter ID NE MMLCommand
Feature ID Feature Name Description
SndRcvMode1 BSC6910 SET
BTSRXUBP
GBFD-111202 O&M of BTS Meaning:The
connectionmode 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
GSM BSS
2-Antenna Receive Diversity Feature Parameter Description 7 Parameters
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Copyright Huawei Technologies Co., Ltd.
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Parameter ID NE MMLCommand
Feature ID Feature Name Description
SndRcvMode2 BSC6900 SET
BTSRXUBP
GBFD-111202 O&M of BTS Meaning:The
connectionmode 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]),
THREEDOUB
LEFOUR_ANT
ENNA(Three
Feeder[2TX +4RX]),
FOURDOUBL
E_ANTENNA
(Four Feeder
[2TX + 2RX]),
FOURDOUBL
EFOUR_ANTE
NNA(Four
Feeder[2TX +
4RX])
Unit:None
GSM BSS
2-Antenna Receive Diversity Feature Parameter Description 7 Parameters
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Parameter ID NE MMLCommand
Feature ID Feature Name Description
Actual Value
Range:SGL_ANTENNA,
SGLDOUBLE_
ANTENNA,
DOUBLE_ANT
ENNA,
DOUBLEFOU
R_ANTENNA,
DOUBLESING
LE_ANTENNA
,
DOUBLEDOU
BLE_ANTENN
A,
THREEDOUB
LEFOUR_ANT
ENNA,
FOURDOUBL
E_ANTENNA,
FOURDOUBL
EFOUR_ANTE
NNA
Default
Value:DOUBLE_ANTENNA
(Double Feeder
[2TX + 2RX])
GSM BSS
2-Antenna Receive Diversity Feature Parameter Description 7 Parameters
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Parameter ID NE MMLCommand
Feature ID Feature Name Description
SndRcvMode2 BSC6910 SET
BTSRXUBP
GBFD-111202 O&M of BTS Meaning:The
connectionmode 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]),
THREEDOUB
LEFOUR_ANT
ENNA(Three
Feeder[2TX +4RX]),
FOURDOUBL
E_ANTENNA
(Four Feeder
[2TX + 2RX]),
FOURDOUBL
EFOUR_ANTE
NNA(Four
Feeder[2TX +
4RX])
Unit:None
GSM BSS
2-Antenna Receive Diversity Feature Parameter Description 7 Parameters
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Parameter ID NE MMLCommand
Feature ID Feature Name Description
Actual Value
Range:SGL_ANTENNA,
SGLDOUBLE_
ANTENNA,
DOUBLE_ANT
ENNA,
DOUBLEFOU
R_ANTENNA,
DOUBLESING
LE_ANTENNA
,
DOUBLEDOU
BLE_ANTENN
A,
THREEDOUB
LEFOUR_ANT
ENNA,
FOURDOUBL
E_ANTENNA,
FOURDOUBL
EFOUR_ANTE
NNA
Default
Value:DOUBLE_ANTENNA
(Double Feeder
[2TX + 2RX])
GSM BSS
2-Antenna Receive Diversity Feature Parameter Description 7 Parameters
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Parameter ID NE MMLCommand
Feature ID Feature Name Description
SndRcvMode3 BSC6900 SET
BTSRXUBP
GBFD-111202 O&M of BTS Meaning:The
connectionmode 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
GSM BSS
2-Antenna Receive Diversity Feature Parameter Description 7 Parameters
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Parameter ID NE MMLCommand
Feature ID Feature Name Description
BLE_ANTENN
ADefault
Value:DOUBL
E_ANTENNA
(Double Feeder
[2TX + 2RX])
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2-Antenna Receive Diversity Feature Parameter Description 7 Parameters
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Parameter ID NE MMLCommand
Feature ID Feature Name Description
SndRcvMode3 BSC6910 SET
BTSRXUBP
GBFD-111202 O&M of BTS Meaning:The
connectionmode 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
GSM BSS
2-Antenna Receive Diversity Feature Parameter Description 7 Parameters
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Parameter ID NE MMLCommand
Feature ID Feature Name Description
BLE_ANTENN
ADefault
Value:DOUBL
E_ANTENNA
(Double Feeder
[2TX + 2RX])
ICTYP BSC6900 SET
GCELLSOFT
MRFD-210604
GBFD-115801
2-Antenna
Receive
Diversity
ICC
Meaning:Inter-
ference
cancellation
mode. When
tight frequency
reuse is used, itis recommended
that this
parameter be set
to ICC. When
noises are
restricted, it is
recommended
that this
parameter be set
to MRC.
GUI ValueRange:MRC
(MRC), ICC
(ICC)
Unit:None
Actual Value
Range:MRC,
ICC
Default
Value:MRC
(MRC)
GSM BSS
2-Antenna Receive Diversity Feature Parameter Description 7 Parameters
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Parameter ID NE MMLCommand
Feature ID Feature Name Description
ICTYP BSC6910 SET
GCELLSOFT
MRFD-210604
GBFD-115801
2-Antenna
ReceiveDiversity
ICC
Meaning:Inter-
ferencecancellation
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,
ICCDefault
Value:MRC
(MRC)
GSM BSS
2-Antenna Receive Diversity Feature Parameter Description 7 Parameters
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Parameter ID NE MMLCommand
Feature ID Feature Name Description
STIRCALLO
WED
BSC6900 SET
GCELLSOFT
MRFD-210604 2-Antenna
ReceiveDiversity
Meaning:Wheth
er to enable theEICC 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, YESDefault
Value:NO(No)
GSM BSS
2-Antenna Receive Diversity Feature Parameter Description 7 Parameters
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http://en/GSM/BSC6900/m-bsc-mml-go/mbsc/m-mml/set-gcellsoft.htmlhttp://en/GSM/BSC6900/m-bsc-mml-go/mbsc/m-mml/set-gcellsoft.htmlhttp://en/GSM/BSC6900/m-bsc-mml-go/mbsc/m-para/gcellsoft_stircallowed.htmlhttp://en/GSM/BSC6900/m-bsc-mml-go/mbsc/m-para/gcellsoft_stircallowed.html -
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Parameter ID NE MMLCommand
Feature ID Feature Name Description
STIRCALLO
WED
BSC6910 SET
GCELLSOFT
MRFD-210604 2-Antenna
ReceiveDiversity
Meaning:Wheth
er to enable theEICC 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, YESDefault
Value:NO(No)
GSM BSS
2-Antenna Receive Diversity Feature Parameter Description 7 Parameters
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http://en/GSM/BSC6910/m-bsc-mml-go/mbsc/m-mml/set-gcellsoft.htmlhttp://en/GSM/BSC6910/m-bsc-mml-go/mbsc/m-mml/set-gcellsoft.htmlhttp://en/GSM/BSC6910/m-bsc-mml-go/mbsc/m-para/gcellsoft_stircallowed.htmlhttp://en/GSM/BSC6910/m-bsc-mml-go/mbsc/m-para/gcellsoft_stircallowed.html -
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8CountersGSM:There are no specific counters associated with this feature.
GSM BSS
2-Antenna Receive Diversity Feature Parameter Description 8 Counters
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9GlossaryFor the acronyms, abbreviations, terms, and definitions, see Glossary.
GSM BSS
2-Antenna Receive Diversity Feature Parameter Description 9 Glossary
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