[XX Project] Analysis Report on Call Drop Problems.doc

[XX Project] Analysis Report on Call Drop ProblemsINTERNAL

[XX Project] Analysis Report on Call Drop ProblemsXX Department2012-02-28Related tools are already available for supporting the data required for this analysis report. Presently a call drop analysis tool of Phase II is under development. This tool of Phase II covers almost all the analysis data. To improve the data processing efficiency, you are advised to use the call drop analysis tool of Phase II to analyze data. If you find that this tool fails in processing a certain item, use other tools such as PRS and feed back the problem and requirement so that the call drop analysis tool can be improved continuously. In addition, those who are responsible for exporting analysis reports must be capable of analyzing the data, because the tool provides only data analysis to improve efficiency, and the conclusion of the analysis must be provided by the analyzers.

Other tools: the parameter check tool, the RF channel check tool, and the CHR analysis tool.

1 Problem Description1.1 Background InformationGive a brief description of the background information of the current project, including the project name, project scale, networking mode (IP networking or microwave transmission), and major events in earlier stages.

The project of Portugal Telecom (PT) in Portugal involves the swapping of all 2G sites in the south of Portugal, including Lisbon. Most of the 2G sites use devices from Motorola, and some of the sites use devices from Alcatel. The swapping type is Non Like to Like.

The project scale: 11 sets of BSC6900 + M2000 + PRS + NASTAR + CME. The number of BTSs is 2409. For indoor macro BTSs, BTS3900L is used for swapping of the original network devices. For outdoor macro BTSs, the mode of DBS3900 + AMP30 (DC or AC) is used. For outdoor micro BTSs, the mode of BTS3900E + APM30 (AC) is used.

The call drop rate of three BSCs (BPI11, BPI12, and BBHR5) in the urban area of Lisbon does not meet the requirement, and the PT required that this problem must be resolved before December 6. In the call drop analysis this time, engineers focused on BBHR5. According to the field engineers, the frequencies of BBHR5 were replanned on November 9. As a result, the call drop rate increased by 0.02%0.03%, including the call drop rate in subway scenarios.1.2 OverviewGive a brief description of the related data such as the current problem, the target call drop rate, and the call drop rate of the live network in one week.BBHR5Targets110711081109111011111112111311141115

CDR (%) 0.760.860.810.870.830.820.640.630.920.83

1.3 Version InformationProvide the version information of the live network, including versions of the BSC and BTS. If multiple versions are involved, specify the versions clearly. If version upgrade is involved, specify versions before and after the upgrade, and the upgrade time.

BSC version: V900R012ENGC01SPH516

BTS version: 3900 - BTS3000V100R012C00SPC048

BTS version: 3900E - BTS3000V100R008C12SPC018

2 Execution of Required ActionsProvide the results from execution of required actions, including necessary deliverables, troubleshooting results, and current difficulties.Checklist of Required Actions for Call DropsStateTimeEngineer nameResults

Identify call drop causes by analyzing performance data and CHRsOngoing

Check RF channels for main and diversity faults, cross connections, and interferenceOngoing

Check for device faults and alarmsOngoing

Check all parametersOngoing

Check for BTS or BSC version differences and parameter differencesOngoing

Check the parameters of the devices from other vendors in the boundaries of the areas served by the devices from other vendorsOngoing

Analyze neighboring relationships (for newly deployed sites and areas where Huawei devices are interconnected to devices from other vendors)Ongoing

Check network coverageOngoing

Analyze changes in traffic and KPIs in special-purpose scenarios (networks supporting GSM900 and DCS1800 and configured with co-BCCH)Ongoing

Check CS and PS services (their proportions and changes)Ongoing

Analyze frequencies after network expansion, deployment, or reconstructionOngoing

Check for abrupt events such as charging policy changes, weather changes, and mass gatheringsOngoing

Analyze the long-term traffic trends due to seasonal changes and subscriber number increaseOngoing

Analyze complaints and call drops caused by other causes by analyzing CHRsOngoing

3 Detailed Analysis of Required Actions3.1 Required Action 1 - Determining the Scope of the Call Drop Problem and Analyzing the Call Drop Causes3.1.1 Determining the Scope of the Call Drop ProblemDetermining the scope of the call drop problem refers to determining whether a call drop occurs on the entire network or in TOP cells. If such a problem involves network changes such as swapping or upgrade, provide the data before and after such a network change for data comparison to filter out relative TOP cells and absolute TOP cells. If such a problem does not involve any network change, that is, no swapping or upgrade is performed, filter out absolute TOP cells.Cell typeCM33K3013ACDR

PAA3GSM90018984402.24%

MMP1GSM90017740784.34%

CDIV2GSM90016923317.25%

AMEI1GSM90013436353.69%

TOJ3GSM90013127434.78%

TGRIT2GSM90013021755.98%

MRA1GSM90012739833.19%

CAMO1GSM90012569318.04%

EPM1GSM90011814128.36%

BUR3GSM90011850642.33%

TELE2GSM90011448323.60%

CHAMS3GSM90011333423.38%

MMR1GSM90011295811.69%

LUS1GSM90010613697.74%

AFL3GSM90010513227.94%

QFLR2GSM90010319025.42%

MMR2GSM90010131723.18%

EPM1DDCS18009520984.53%

TELE2DDCS18009326553.50%

MCM2GSM9008734492.52%

QFLR3GSM9008515385.53%

ARNN3GSM9008218184.51%

ZAMC3GSM9008235422.32%

SISS2GSM9008180010.13%

OLB1GSM9008039662.02%

VNE2GSM9007832732.38%

BUR1GSM9007711406.75%

QDI2GSM9007420823.55%

XXIO2GSM900737459.80%

MILH3GSM9007324243.01%

MILH1GSM9007112475.69%

ODI1GSM9007115154.69%

CMBE2GSM9007118653.81%

BOA3GSM9007122173.20%

GNRG1GSM9007034532.03%

AMA1GSM9007036731.91%

GRR2GSM9006832272.11%

GALI1GSM9006721723.08%

QVZ2GSM9006634321.92%

GRR1GSM9006517893.63%

MRTS3DDCS18006525912.51%

BOA1GSM9006417283.70%

CEC1GSM9006417393.68%

ZAM2GSM9006318183.47%

CDRS1GSM9006242014.76%

GALI2GSM9005918113.26%

ARNN1GSM900579975.72%

TES2GSM9005615883.53%

MILH2GSM9005511064.97%

BEN3GSM9005520132.73%

AVU3GSM9005529021.90%

MUSG2GSM9005411534.68%

PSA1GSM9005318242.91%

AFCE3GSM9005327701.91%

RBL1GSM9005215033.46%

TOJ1GSM9005114653.48%

MMP3GSM9005115893.21%

FRI2GSM9005120962.43%

FNV2GSM9005023862.10%

QDI1GSM9005024542.04%

LOR2GSM9004922012.23%

LUM3GSM900487426.47%

AMOT1GSM9004811664.12%

CAR2GSM900479315.05%

PDRN2GSM9004723092.04%

Collect the traffic statistics on November 14. BBHR5 provides 715 cells in total. Take the intersection of 20% cells with the highest call drop rate and 20% cells with the highest number of call drops, that is, totally 65 cells to locate the TOP cells where call drop occurs. For details, see the preceding table. Because the data of original network is unavailable, whether the 65 cells are also TOP cells on the original network cannot be confirmed. However, calculation shows that if the call drop rate of the 65 cells meets the requirement, the call drops of the whole BSC will decrease by 20%, and the call drop rate of the whole network will decrease from 0.92% to 0.74%. Therefore, the call drop problem is caused by call drops in TOP cells in GSM900 areas.3.1.2 Analyzing the Call Drop Causes Analyze the causes for call drops. If network changes such as swapping or upgrade are involved, provide the data before such changes for comparison. If the original network is not a Huawei network, analyze the cause values of the original network.

According to the following table, the stable call drops on the wireless interfaces account for 80.63% of the total call drops, and handover call drops account for 17.31%. CM33CM33C

97.94%CM33080.63%CM330041.73%M3100A32.83%

M3100B0.00%

M3100C0.06%

M3200A8.83%

M3200B0.00%

M3200C0.00%

CM330138.78%M3101A29.83%

M3101B0.01%

M3101C0.00%

M3101D0.00%

M3101E0.00%

M3201A8.92%

M3201B0.01%

M3201C0.00%

M3201D0.00%

M3201E0.00%

CM33020.13%M31020.10%

M32020.03%

CM33117.31%H3027Ca0.00%

H3028Ca0.00%

H3127Ca12.61%

H3128Ca3.10%

H3327Ca1.25%

H3328Ca0.34%

2.06%CM3320.10%M3120.09%

M3220.01%

CM3330.34%M3130.32%

M3230.02%

CM3341.35%M3141.17%

M3240.18%

CM3350.27%M3150.26%

M3250.01%

According to the causes for call drops on wireless interfaces, call drops on wireless interfaces caused by the uplink Rx level and the downlink Rx quality account for the highest proportion, which are 31.03% and 27.27% separately.

M3030A:TCHTA0.46%

M3030B:TCH29.69%

M3030C:TCH3.47%

M3030D:TCH11.57%

M3030H:TCH2.52%

M3030I:TCH27.05%

M3030J:TCH8.20%

M3030K:TCH17.03%

3.1.3 Summary

Draw conclusions according to the determination of the scope of call drop problem and the analysis of the causes.

After filtering, 65 cells are selected as the TOP cells where call drop occurs. However, because the data of the original network is unavailable, it is impossible to determine whether the call drop rate of the 65 cells is high all the time or is deteriorated due to the swapping. If the call drop rate is deteriorated after the swapping, the problem lies in the TOP cells. The call drop rate of the whole network can meet the requirement if the call drop rate of the TOP cells is optimized and reduced to 0.76%. If the call drop rate of these TOP cells is also high on the original network, focus on resolving the problem on the entire network. According to the causes for call drops, downlink interference accounts for a large proportion.

Requirement: The field engineers must provide the traffic statistics of BBHR5 on the original network and compare the differences between the live network and the original network to confirm whether the problem lies in the TOP cells.

3.2 Required Action 2 - Checking RF Channels3.2.1 Checking the Difference Between the Main and Diversity LevelsProvide a deliverable on the check result of the difference between the main and diversity levels and the related support data. Explain the check result of cells with a large difference between the main and diversity levels. In addition, analyze the relationship between the cells with a large difference between the main and diversity levels and the TOP cells, and determine whether the cells with a large difference between the main and diversity levels are TOP cells. Handle the difference between the main and diversity levels of TOP cells in precedence.

According to the deliverable on RF channel check fed back by the field engineers, four cells of the BBHR5 have a large difference between the main and diversity levels. The problem with two of the four cells is confirmed and resolved, while the problem with the other two cells still is not resolved and needs further check.

Collect the data on November 14 and test the difference between the main and diversity levels by referring to the traffic statistics fed back by field engineers. The test result is as follows:

TOP

MCM2TOP

MMP1TOP

MCM2TOP

MMP1TOP

MMP3TOP

MRA1TOP

ODI1TOP

Check shows that many cells have a large difference between the main and diversity levels. In particular, emphasis must be laid on onsite check of the TOP cells with a large difference between the main and diversity levels.

3.2.2 Checking IntermodulationDetermine whether obvious uplink interference exists according to the interference band data. If the uplink interference exists, provide the intermodulation check result. Determine whether the intermodulation exists. If the intermodulation exists, provide the check result. The deliverables do not contain any record on intermodulation check of the BBHR5.3.2.3 Reverse Cell ConnectionCheck reverse cell connection, and troubleshoot the cells with the call drop problem based on the check results of related tools. Provide the check result of cells with the problem, and analyze the relationship between the reversely connected cells and the TOP cells. Resolve problems of the TOP cells in precedence.

The deliverables do not contain any record on reverse cell connection of the BBHR5.3.2.4 Uplink Interference BandExport the uplink interference analysis data. Provide the proportion of uplink interference bands 4 and 5 and the proportion of uplink interference bands 3, 4, and 5. Check the cells with obvious interference and provide the deliverable on the interference check result and handling results of the cells with interference. In addition, analyze the relationship between the cells with interference and the TOP cells. Resolve the interference problem of the TOP cells in precedence.According to the high proportion of interference bands 4 and 5 in cells XXI3 and MRA1, possibly uplink interference exists. Emphasis must be laid on check of the cells that have a high proportion of interference bands 3, 4, and 5 and are confirmed to be TOP cells, as listed in the following table. :1:2:3:4:5:45:345TOP

XXI30.00%0.00%76.66%23.34%0.00%23.34%100.00%#N/A

XXI22.77%0.15%95.09%1.98%0.00%1.98%97.07%#N/A

XXI40.77%13.95%84.84%0.43%0.00%0.43%85.28%#N/A

SAMNT133.65%33.19%32.97%0.19%0.00%0.19%33.16%#N/A

MRA148.35%20.37%13.66%17.62%0.00%17.62%31.28%TOP

AFCE254.11%19.64%26.03%0.21%0.00%0.21%26.25%#N/A

ARNN335.86%41.45%22.64%0.04%0.00%0.04%22.69%TOP

LSHIN114.99%65.39%19.61%0.01%0.00%0.01%19.62%#N/A

PAA237.84%43.00%19.16%0.01%0.00%0.01%19.17%#N/A

BOA240.72%41.48%17.80%0.01%0.00%0.01%17.80%#N/A

AMA139.89%43.43%16.67%0.00%0.00%0.00%16.67%TOP

MCM338.92%44.64%16.43%0.01%0.00%0.01%16.44%#N/A

BOAE250.28%33.43%16.18%0.10%0.00%0.10%16.28%#N/A

QCO245.46%38.40%16.07%0.08%0.00%0.08%16.15%#N/A

AVU346.90%37.58%15.48%0.04%0.00%0.04%15.52%TOP

TES340.38%44.70%14.91%0.00%0.00%0.00%14.91%#N/A

LUM347.71%37.77%14.33%0.19%0.00%0.19%14.52%TOP

GNRG144.57%40.95%14.44%0.04%0.00%0.04%14.48%TOP

ODV141.82%43.76%14.42%0.00%0.00%0.00%14.42%#N/A

MRTS333.26%52.55%12.86%1.32%0.00%1.32%14.18%#N/A

AMA243.92%43.05%13.02%0.01%0.00%0.01%13.03%#N/A

UAMO356.46%30.63%12.90%0.01%0.00%0.01%12.91%#N/A

ELU266.82%80.48%11.36%1.34%0.01%1.34%12.70%#N/A

UAMO250.63%36.82%12.52%0.02%0.00%0.02%12.55%#N/A

ABEJ179.60%20.32%0.07%0.00%0.00%0.00%12.13%#N/A

SISS335.02%53.85%11.12%0.01%0.00%0.01%11.13%#N/A

PAA337.28%52.12%10.60%0.00%0.00%0.00%10.60%TOP

3.2.5 Uplink/Downlink BalanceProvide the check result of uplink/downlink balance and the result of handling the cells with such a problem. In addition, analyze the relationship between the cells with the uplink/downlink balance problem and the TOP cells. Resolve the uplink/downlink unbalance problem of the TOP cells in precedence.

According to the data analysis of uplink/downlink balance levels on November 14, cells listed in the following table have a high proportion of uplink/downlink balance level 1 and level 2 (that is, over 15%). Therefore, the uplink/downlink unbalance exists (that is, weak downlink or strong uplink). Troubleshoot the TOP cells with uplink/downlink unbalance problems in precedence.:11:12TOP

MRA20.16%91.84%GSM900#N/A

MMP20.08%88.03%GSM900#N/A

MLU20.06%83.37%GSM900#N/A

MRO30.08%81.60%GSM900#N/A

MRO10.10%79.88%GSM900#N/A

MCM10.19%79.02%GSM900#N/A

MCM30.13%77.52%GSM900#N/A

MRA10.20%63.59%GSM900TOP

MCU10.21%63.23%GSM900#N/A

MCU20.15%58.69%GSM900#N/A

MMP10.33%58.05%GSM900TOP

MALM20.13%54.79%GSM900#N/A

MRO20.26%39.59%GSM900#N/A

SISS10.78%20.17%GSM900#N/A

ABL1D0.14%18.88%DCS1800#N/A

CAR3D0.07%18.30%DCS1800#N/A

MLU10.21%17.43%GSM900#N/A

GALI1D0.09%17.23%DCS1800#N/A

ZAM10.14%15.38%GSM900#N/A

AVU3D0.07%15.21%DCS1800#N/A

ELU2D40.22%15.18%DCS1800#N/A

3.2.6 Summary

Draw conclusions according to the related data analysis of required action 2.

The large difference between the main and diversity levels based on traffic statistics may differ greatly from the deliverable fed back by field engineers. If there is a large difference between the main and diversity levels on the live network, check for the cause. If no deliverable is generated from the preceding required action, reconfirm whether the preceding problems occur. Troubleshoot the TOP cells with these problems in precedence.Requirement: Feed back related check deliverables and conclusions. Provide related explanation if the preceding problems do not occur.3.3 Required Action 3 - Checking Device Faults and Alarms3.3.1 Checking AlarmsProvide the alarm information of the faulty BSC and the related alarm handling results. Check whether there are any alarms that have significant influence on call drops, and analyze the relationship between the alarms and the cells with call drops. Handle the alarms of cells with a high call drop rate in time.

2 (++)per two week

According to the deliverable fed back by field engineers, no alarm is generated. Provide explanation if the preceding problems do not occur.3.3.2 Checking Device Faults

Provide the information about faults (service interruption and out-of-service) of the faulty BSC and the related fault handling results. In addition, analyze the relationship between the device faults and the cells with call drops. Handle device faults of cells with a high call drop rate in precedence.

3.3.3 Summary

Draw conclusions based on the alarms and check results of device faults.

3.4 Required Action 4 - Checking Parameters (All Parameters)3.4.1 Checking Parameters on the B Side

Provide the check result of all parameters on the B side. Check the parameters based on the parameter check theme. Provide reasons for improper parameters and modify the improper parameters if no proper reasons are given.

Due to the difference between the live network and the original network, many parameters fail to meet the requirement. According to the deliverables fed back by the field engineers, the following parameter check result is provided. Parameter NameBaselineRangeCurrent ValuesPASSNot PASS

Edge HO AdjCell Watch Time6.0[2..8]1(1605),6(17308)1730816056

Edge HO AdjCell Valid Time4.0[2..8]1(1605),4(17308)1730816054

No Dl Mr.HO AllowedNONONO(712),YES(8)7128

Cell Reselect Temporary Offset0.00.00(704),2(2),3(14)704160

Cell Reselect Penalty Time0.0""0(693),1(14),31(13)0720310

Allow Dynamic Shutdown of TRXNONONO(2527),YES(3)25273NO

According to the latest MML configuration files of the BBHR5 from the field engineers, import the files into the PFMStudio to check all parameters. A fault occurs, and no result is exported. Reconfirmation is required later.

3.4.2 Checking Parameters on the N Side

Provide the result of check for parameter on the N side, and confirm and check the parameters based on the parameter check theme. For the parameters that affect call drops, give the reason for parameter settings. If no proper reasons are available, change the values of these parameters to the recommended values.

3.4.3 Summary

Modify improper parameters based on the parameter check result and draw conclusions.

The field engineers provide the latest MML configuration files, another parameter check will be performed later. Feed back the information in red boxes in the following figure to generate parameter baselines for parameter check.

3.5 Required Action 5 - Checking Versions (BSC/BTS Version Differences and Parameter Differences)3.5.1 Analyzing BSC Version DifferencesConfirm whether there are any influences from the version differences or the known problems of the current version according to the released warnings, announcements, and release notes. Take the released avoidance measures to avoid factors such as known differences.

BSC version: V900R012ENGC01SPH516

3.5.2 BTS Version DifferencesConfirm whether there are any influences from the version differences or the known problems of the current version according to the released warnings, announcements, and release notes. Take the released avoidance measures to avoid factors such as known differences.


3900E - BTS3000V100R008C12SPC018The BTS version was upgraded on November 15.


3900E - BTS3000V100R008C12SPC0183.5.3 Summary

Draw conclusions based on the version differences of the BSC and BTS.

3.6 Required Action 6 - Checking the Parameters of the Other Vendors' Devices in the Boundaries of Huawei and Other Vendors' Devices3.6.1 Checking the Parameters of the Other Vendors' Devices in the Boundaries of Huawei and Other Vendors' DevicesFor problems involving the boundaries of Huawei and other vendors' devices, check whether there are any call drops caused by abnormal traffic distribution (such as improper reselection, and handover) due to improper parameter settings of the devices from other vendors. If the parameter settings are improper, provide a list of the improper parameters, results from the customer's modifications, and handling results.Checklist of Required Actions for Call DropsStateTimeEngineer nameResults

Check the parameters of the devices from other vendors in the boundaries of the areas served by the devices from other vendorsOngoing

Determination of the check cannot be made because no deliverable is provided.

3.6.2 Summary

Draw conclusions based on the check results of the parameters of other vendors' devices.

3.7 Required Action 7 - Analyzing Neighboring Relationships (For Newly Deployed Sites and Areas Where Huawei Devices are Interconnected to Devices from Other Vendors)3.7.1 Handover Analysis

Provide the analysis of the related data such as the handover success rate, and the proportion of handover reason types. Determine whether the handover is proper according to the data, analyze the data of TOP cells, and resolve the handover problems of the TOP cells with such a problem in precedence. If such a problem involves network changes such as swapping or upgrade, provide the data before and after such a network change.

The intra-BSC outgoing cell handover success rate is 98.80%, and the inter-BSC outgoing cell handover success rate is 96.48%.

BSC

11835064.15%3.14%

432114615.16%3.27%

1578800.55%0.69%

531613818.65%0.30%

582200.20%6.55%

1585905555.62%0.46%

528220.19%0.77%

OM13030.00%8.44%

15621715.48%

BSC

770746.24%11.21%

24304919.69%7.08%

61470.50%1.59%

14086211.41%1.25%

65600.53%9.68%

66867454.18%1.25%

OM550.00%18.18%

918887.45%7.42%

3.7.2 Analyzing Neighboring Relationships

Analyze the reasonableness of neighboring relationships by referring to the neighboring cell optimization theme. Optimize the missing and redundant neighboring cells, and provide the check results, the deliverable on handling results, and handling results. If such a problem involves network changes such as swapping or upgrade, provide the data before and after such a network change.

Field engineers are advised to use the Nastar for checking and analyzing neighboring cells.

3.7.3 Summary

Draw conclusions according to the handover analysis and the check results of neighboring cells.

From the proportion of handovers, handovers caused by poor uplink and downlink quality accounts for a large proportion, causing a high handover failure rate. Determine whether the settings of the handover parameters are proper.

3.8 Required Action 8 - Checking Network Coverage (Power Matching)

3.8.1 Power Matching

If such a problem involves network changes such as swapping or upgrade, provide the data before and after such a network change. For a swapped network, provide the power matching data and actual site test data. A sufficient number of sampling points in the site test must be provided, which depends upon the number of cells to be swapped. Ensure that the power of the live network matches that of the original network.

According to communications with the field engineers in an exchange conference, the cells of the BBHR5 have changed significantly. The number of TRXs increases from 20,000 on the original network to the 24, 000 on the live network. Because more BTSs have been added to the network for capacity expansion, the planned coverage changes significantly. As a result, the power matching between the live network and the original network cannot be determined.

3.8.2 Two-Dimensional Distribution of Level Quality

Analyze the uplink/downlink coverage and determine whether the problem of obvious weak coverage occurs according to the two-dimensional distribution data. In addition to troubleshooting the whole network, focus on checking whether a high proportion of low Rx levels exists in the TOP cells. If such a problem involves network changes such as swapping or upgrade, provide the data before and after such a network change.

Two-dimensional distribution of level quality on the whole network

The following table lists the two-dimensional distribution of uplink level quality. The distribution of uplink levels is proper.ULRxLev0RxLev1RxLev2RxLev3RxLev4RxLev5RxLev6RxLev7

RxQual01.94%4.92%11.03%19.19%22.79%15.18%8.10%7.55%90.70%

RxQual10.33%0.49%0.56%0.40%0.20%0.07%0.02%0.01%2.10%

RxQual20.39%0.52%0.52%0.34%0.16%0.06%0.02%0.02%2.04%

RxQual30.48%0.54%0.48%0.34%0.22%0.12%0.06%0.05%2.30%

RxQual40.48%0.39%0.26%0.14%0.08%0.04%0.02%0.02%1.45%

RxQual50.40%0.21%0.11%0.05%0.03%0.01%0.01%0.01%0.83%

RxQual60.24%0.09%0.05%0.03%0.02%0.01%0.00%0.00%0.44%

RxQual70.12%0.02%0.00%0.00%0.00%0.00%0.00%0.00%0.15%

4.38%7.20%13.01%20.50%23.51%15.49%8.24%7.67%

The following table lists the two-dimensional distribution of downlink level quality. The distribution of downlink levels shows that the proportion of level 7 (RxLev7) is high, which matches the bad HQI on the downlink. In such a case, the power can be decreased to a proper level.

DLRxLev0RxLev1RxLev2RxLev3RxLev4RxLev5RxLev6RxLev7

RxQual00.35%1.76%4.81%9.01%14.67%16.54%14.76%27.31%89.21%

RxQual10.10%0.21%0.32%0.40%0.41%0.34%0.22%0.20%2.20%

RxQual20.13%0.22%0.32%0.39%0.39%0.31%0.19%0.17%2.13%

RxQual30.17%0.25%0.34%0.40%0.39%0.29%0.17%0.13%2.13%

RxQual40.20%0.23%0.31%0.35%0.32%0.22%0.12%0.09%1.84%

RxQual50.22%0.20%0.25%0.27%0.23%0.15%0.08%0.06%1.45%

RxQual60.17%0.12%0.14%0.14%0.11%0.06%0.03%0.02%0.77%

RxQual70.06%0.04%0.05%0.05%0.04%0.02%0.01%0.00%0.28%

1.39%3.05%6.54%11.00%16.55%17.93%15.58%27.97%

Two-dimensional distribution of level quality in DCS1800 cellsULRxLev0RxLev1RxLev2RxLev3RxLev4RxLev5RxLev6RxLev7

RxQual02.84%6.22%13.34%22.00%23.80%14.32%6.60%4.40%93.52%

RxQual10.37%0.34%0.31%0.20%0.09%0.03%0.01%0.00%1.34%

RxQual20.41%0.34%0.28%0.18%0.09%0.03%0.01%0.01%1.36%

RxQual30.48%0.34%0.29%0.26%0.19%0.10%0.04%0.03%1.72%

RxQual40.43%0.21%0.15%0.10%0.07%0.03%0.02%0.02%1.04%

RxQual50.32%0.10%0.06%0.04%0.02%0.01%0.00%0.00%0.56%

RxQual60.20%0.06%0.03%0.02%0.01%0.00%0.00%0.00%0.33%

RxQual70.11%0.01%0.00%0.00%0.00%0.00%0.00%0.00%0.13%

5.18%7.62%14.47%22.79%24.26%14.52%6.69%4.46%

The distribution of uplink levels in the DCS1800 cells is proper.


RxQual00.16%1.02%3.43%7.88%14.96%18.53%17.22%29.58%92.78%

RxQual10.04%0.11%0.18%0.28%0.33%0.30%0.21%0.21%1.66%

RxQual20.05%0.11%0.18%0.27%0.32%0.28%0.19%0.18%1.58%

RxQual30.07%0.11%0.19%0.27%0.29%0.24%0.15%0.12%1.43%

RxQual40.08%0.10%0.16%0.23%0.24%0.18%0.11%0.09%1.18%

RxQual50.07%0.08%0.13%0.16%0.16%0.12%0.07%0.07%0.87%

RxQual60.05%0.04%0.07%0.08%0.07%0.04%0.02%0.02%0.38%

RxQual70.02%0.02%0.02%0.03%0.02%0.01%0.01%0.00%0.13%

0.54%1.59%4.36%9.19%16.39%19.71%17.97%30.25%

The distribution of downlink levels in the DCS1800 cells indicates that the proportion of level 7 (that is, RxLev7) on the downlink is 30.25%. Therefore, the power can be decreased to a proper level to reduce the interference.

Two-dimensional distribution of level quality in GSM900 cellsULRxLev0RxLev1RxLev2RxLev3RxLev4RxLev5RxLev6RxLev7

RxQual01.46%4.22%9.79%17.69%22.25%15.64%8.90%9.24%89.19%

RxQual10.31%0.57%0.69%0.51%0.26%0.10%0.03%0.02%2.50%

RxQual20.37%0.62%0.65%0.42%0.20%0.08%0.03%0.03%2.40%

RxQual30.49%0.66%0.58%0.38%0.24%0.13%0.06%0.07%2.61%

RxQual40.51%0.49%0.32%0.17%0.09%0.04%0.02%0.03%1.67%

RxQual50.43%0.27%0.14%0.06%0.03%0.02%0.01%0.01%0.97%

RxQual60.26%0.11%0.06%0.03%0.02%0.01%0.00%0.00%0.50%

RxQual70.13%0.02%0.01%0.00%0.00%0.00%0.00%0.00%0.16%

3.96%6.97%12.23%19.26%23.11%16.01%9.07%9.40%

The distribution of uplink levels in the GSM900 cells is proper.


RxQual00.45%2.16%5.55%9.62%14.51%15.47%13.45%26.09%87.29%

RxQual10.13%0.27%0.39%0.46%0.45%0.36%0.23%0.20%2.49%

RxQual20.16%0.29%0.39%0.45%0.43%0.33%0.20%0.16%2.42%

RxQual30.22%0.32%0.43%0.47%0.44%0.31%0.18%0.13%2.50%

RxQual40.26%0.31%0.39%0.41%0.36%0.24%0.13%0.09%2.19%

RxQual50.29%0.26%0.31%0.32%0.27%0.16%0.08%0.06%1.76%

RxQual60.23%0.16%0.18%0.17%0.13%0.07%0.03%0.02%0.98%

RxQual70.09%0.06%0.07%0.06%0.05%0.02%0.01%0.01%0.36%

1.84%3.83%7.71%11.97%16.64%16.97%14.30%26.75%

The distribution of downlink levels in the GSM900 cells indicates that the proportion of level 7 (that is, RxLev7) on the downlink is 26.75%. Therefore, the power can be decreased to a proper level to reduce the interference.

3.8.3 Summary

Draw conclusions according to the power matching and level analysis results.

The two-dimensional distribution of level quality shows that the proportion of level 7 (that is, RxLev7) on the downlink is high. Therefore, the downlink transmit power can be decreased to a proper level.

3.9 Required Action 9 Analyzing Changes in Traffic and KPIs in Special Scenarios (GSM 900MHz/DSC 1800 MHz and CoBCCH)

The dual-band network and CoBCCH networking are involved. Analyze according to the actual live network conditions.

The live network is a dual-band network. The following table lists the number of GSM900 cells and DCS1800 cells supported by the BBHR5. GSM900497

DCS1800223

3.9.1 Traffic

Provide traffic sharing conditions on the dual-band network or in CoBCCH networking mode. Determine whether traffic unbalance exists according to the proportion of TRXs and traffic on different bands. Analyze the traffic in the TOP cells to check whether traffic unbalance exists in the TOP cells. If such a problem involves network changes such as swapping or upgrade, provide the data of traffic distribution on different bands before and after such a network change.

The following figure shows the traffic of GSM900 cells and DCS1800 cells.

3.9.2 Call Drop Rate

Provide the distribution of call drop rate on the dual-band network or in CoBCCH networking mode. Check whether the call drop rate differs greatly on different bands and whether there is a large space for adjusting traffic sharing. If such a problem involves network changes such as swapping or upgrade, provide the data of call drop rate on different bands before and after such a network change.

The following figure shows the call drop rate of GSM900 cells and DCS1800 cells.

The call drop rate of DCS1800 cells is lower than the required value, and the call drop rate of GSM 900 cells differs significantly from the required value.

The relationship between traffic and call drop rate shows that the call drop rate deteriorates with the increase of traffic, especially in the GSM900 cells. Move part of the traffic in the GSM900 cells to the DCS1800 cells to improve the overall call drop rate.

3.9.3 HQI

Provide the HQI distribution on the dual-band network or in CoBCCH networking mode. Check whether the HQI differs significantly on different bands, whether the HQI is relatively poor on the GSM900 band, and whether traffic can be moved to the DCS1800 band. If such a problem involves network changes such as swapping or upgrade, provide the HQI data on different bands before and after such a network change.

In terms of the whole network, the downlink HQI is poor. The poor downlink quality is one of the causes for call drops, and this type of call drops account for a high proportion of all call drops.

The HQI in DCS1800 cells is much better than that in GSM900 cells, and the call drop rate in DCS1800 cells is lower than that in GSM900 cells. Therefore, HQI improvement can improve the call drop rate to some extent.

3.9.4 Analyzing the Call Drop Causes

Provide the distribution of call drop causes on the dual-band network or in CoBCCH networking mode. Determine whether the call drop causes on different bands are consistent and whether inconsistent call drop causes on different bands require different optimization methods.

The following table lists the causes for call drops in DCS1800 cells.

M3030A:TCHTA0.16%

M3030B:TCH44.66%

M3030C:TCH0.58%

M3030D:TCH14.11%

M3030H:TCH1.62%

M3030I:TCH13.39%

M3030J:TCH5.10%

M3030K:TCH20.38%

The following table lists the causes for call drops in GSM900 cells.

M3030A:TCHTA0.57%

M3030B:TCH24.25%

M3030C:TCH4.52%

M3030D:TCH10.65%

M3030H:TCH2.85%

M3030I:TCH32.02%

M3030J:TCH9.33%

M3030K:TCH15.82%

Call drops caused by the uplink level in DCS1800 cells account for the highest proportion. Call drops in GSM900 cells are mainly caused by the uplink level and downlink quality. Therefore, it is an urgent task to improve the HQI in GSM900 cells and reduce the intra-network interferences.

3.9.5 Summary

Draw conclusions according to the analysis of data on different bands on the dual-band network or in CoBCCH networking mode and the comparison of differences before and after network changes such as swapping or upgrade.

The conclusion drawn from the data analysis is that the HQI in DCS1800 cells is much better than that in GSM900 cells and the call drop rate in DCS1800 cells is lower than that in GSM900 cells. You are advised to move part of the traffic in the GSM900 cells to the DCS1800 cells to improve the HQI and the call drop rate in the GSM900 cells.

3.10 Required Action 10 - Checking CS and PS Services (Their Proportions and Changes)3.10.1 CS Service

Provide the relationship between the CS service traffic and call drop, and analyze the impact of intra-network interference on call drops caused by the CS service according to the trend. If such a problem involves network changes such as swapping or upgrade, provide the data before and after such a network change.

3.10.2 PS Service

Provide the relationship between the number of signaling channels occupied by the PS service and the call drop. Analyze the impact of intra-network interference on call drops caused by the PS service. Determine whether the impact caused by the PS service can be reduced by decreasing the signaling channels occupied by the PS service or applying the interference-reducing feature of the PS service. If such a problem involves network changes such as swapping or upgrade, provide the changes of the traffic and the number of signaling channels occupied by the PS service before and after such a network change.

3.10.3 Full Rate Traffic and Half Rate Traffic

Provide the differences between the full rate traffic and the half rate traffic, and analyze the proportion of half rate traffic. If such a problem involves network changes such as swapping or upgrade, provide the proportion change of full rate traffic and half rate traffic before and after such a network change.

3.10.4 Call Drop Rate of Full Rate Traffic and Call Drop Rate of Half Rate TrafficProvide the differences between the call drop rate of the full rate traffic and that of the half rate traffic. For a network with heavy traffic, determine whether the impact of interference caused by the occupation of signaling channels can be reduced by increasing the half rate traffic.

The call drop rate of half rate traffic is better than that of the full rate traffic. The proportion of half rate traffic in the DCS1800 cells is higher than that in the GSM900 cells. You can increase the proportion of half rate traffic in the GSM900 cells to reduce intra-network interference and call drops.

3.10.5 Summary

According to the comparison of CS and PS traffic before and after network changes, analyze whether problems are caused by the increase of traffic, whether the traffic distribution is proper, whether the traffic sharing can be adjusted, whether the impact of PS service on the CS service is obvious, and whether the impact caused by the PS service can be controlled. Draw conclusions based on the related data.

A conclusion drawn from the data analysis is that the call drop rate of the half rate traffic is better than that of the full rate traffic. The PS service is closely related to the call drop rate. You can increase the proportion of half rate traffic and enable the PS downlink DTX function to reduce the intra-network interference and improve the call drop rate.

3.11 Required Action 11 Analyzing Frequencies After Network Expansion, Deployment, and Reconstruction3.11.1 Analyzing FrequenciesProvide the data of network frequency changes. For a network with changes such as newly deployed or swapped network, check whether the use of frequencies has changed, and provide the change data and influence analysis. In addition, use related tools such as Nastar to check whether proper frequencies are used and whether obvious co-channel and adjacent channel interference exists.

According to communications with the field engineers, more BTSs have been added to the network for capacity expansion, the number of TRXs increases from 20,000 on the original network to the 24, 000 on the live network. The network bandwidth is not increased, but the number of TRXs increases by 20%. As a result, the reuse of network frequencies is higher, posing high interference risks. Therefore, the KPIs are affected to some extent.

3.11.2 Summary

Provide influences of frequency change and improper frequency reuse and draw conclusions according to frequency analysis results.3.12 Required Action 12 Checking for Abrupt Events (Charging Policy Changes, Weather Changes, and Mass Gatherings)

3.12.1 Analyzing Abrupt Events

Collect related information about abrupt events. For abrupt events such as charging policy changes, weather changes, and mass gatherings, collect the information about the influence scope and possible influenced counters, provide proper analysis of influences brought by such events, and communicate in time with customers.

No influences have been brought by abrupt events.

3.12.2 Summary

Draw conclusions according to the analysis of influences brought by abrupt events.

3.13 Required Action 13 - Analyzing the Long-Term Traffic Trends Due to Seasonal Changes and Subscriber Number Increase3.13.1 Long-Term Traffic Trends

When long-term trend changes (such as swapping) cause the failure of a network in meeting the requirement or the fluctuation of long-term counters of the inventory network, collect the information about the trend of long-term counters in the past years. Then determine whether the problem is caused by natural change rules such as seasonal changes to avoid failure in meeting requirements due to influences from regular fluctuations such as seasonal changes. Provide comparative analysis of the long-term counter trend, and analyze the impact of the long-term counter trend on the current counters.

Because the data of the original network is unavailable, the seasonal traffic change trend of cells in the BBHR5 cannot be determined. However, according to the email from a field engineer, the traffic in Lisbon increases significantly in December. Section 3.9.2 "Call Drop Rate" indicates that the call drop rate increases with the traffic. Therefore, there is a high risk on meeting the requirement for the call drop rate.

3.13.2 Summary

Draw conclusions according to the data comparison of the long-term counter trend.

3.14 Required Action 14 - Checking for Complaints and Call Drops Due to Other Causes by Analyzing CHRs3.14.1 Analyzing Call Drops Due to Other Causes

Provide analysis of CHRs to check whether abnormal call drops occur, such as obvious call drops not on wireless interfaces or abrupt call drops, and whether a high call drop rate occurs in some subscribers or mobile stations.

No related data is fed back and the related data is to be supplemented.

3.14.2 Summary

Draw conclusions according to the analysis result of CHRs.

4 Current Conclusion

Draw conclusions according to the analysis and summary of the required actions. Provide conclusive opinions such as the current possible problem, the measures that can be taken, other required troubleshooting methods, and the required data support.

According to the preceding analysis, the following conclusions are drawn:

1. Emphasis must be laid on the TOP cells, because obvious problems occur in the TOP cells.

2. Problems persist after performing required actions such as channel or parameter check. Emphasis must be laid on checking TOP cells with the call drop problem.

3. You must confirm whether the handover parameters are properly configured, and adjust the parameters if necessary.

4. The downlink transmit power can be decreased to a proper level to increase the downlink HQI.

5. Traffic between the DCS1800 cells and the GSM900 cells can be adjusted. You can move part of the traffic from the DCS1800 cells to the GSM900 cells to improve the call drop rate.

6. The proportion of half rate traffic can be increased and the PS downlink DTX function can be enabled to improve the call drop rate.

Requirements for feedback

1. Feed back the traffic statistics of the original network for comparing the differences between the original network and the live network to determine the optimization method.

2. Feed back the deliverables on channel troubleshooting and the troubleshooting results of located problems, and provide conclusive descriptions on required actions that fail in locating any problems.

3. Feed back the basic cell information used to generate parameter baselines.

4. Feed back the long-term traffic trend and the benchmark generation rules for evaluating the risks on meeting requirements.

5 Monitoring Optimization MeasuresMonitor the application time, application scope, and application effect of every optimization measure. In addition, provide a comparison report on the application of a measure, including analysis of counter changes before and after application of the measure, gain analysis, and analysis of other influences.

1Repeat SA/FA

2

3

4PSDTX

5

6T305T308

7

8

9CS5%

10BSC

11

12

13MR

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11/14/20110:0026946311RBL2146BBHR5--

11/14/20110:0027056311RBL2146BBHR523292578

11/14/20110:0027166311RBL2146BBHR548584377

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11/14/20110:00284199890RBL3D150BBHR5--

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11/14/20110:00286219890RBL3D150BBHR541083937

11/14/20110:0028701915BEN1151BBHR5--

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11/14/20110:0029141916BEN2152BBHR5--

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11/14/20110:00299129208BEN1D154BBHR5--

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11/14/20110:00301149208BEN1D154BBHR529594723

11/14/20110:00302159209BEN2D155BBHR5736597

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11/14/20110:00308219210BEN3D156BBHR51332119819

11/14/20110:0030906316ELZ1157BBHR5--

11/14/20110:0031016316ELZ1157BBHR52268933647

11/14/20110:0031126316ELZ1157BBHR591325889

11/14/20110:0031236316ELZ1157BBHR52412738642

11/14/20110:0031346317ELZ2158BBHR5--

11/14/20110:0031456317ELZ2158BBHR528493496

11/14/20110:0031566317ELZ2158BBHR522113194

11/14/20110:0031676318ELZ3159BBHR5--

11/14/20110:0031786318ELZ3159BBHR54108241838

11/14/20110:0031896318ELZ3159BBHR53312366681

11/14/20110:00319109555ELZ1D160BBHR5--

11/14/20110:00320119555ELZ1D160BBHR541923995

11/14/20110:00321129555ELZ1D160BBHR51569756

11/14/20110:00322139555ELZ1D160BBHR578118281

11/14/20110:00323149556ELZ2D161BBHR5--

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11/14/20110:00325169556ELZ2D161BBHR53999011334

11/14/20110:00326179556ELZ2D161BBHR528925895

11/14/20110:00327189557ELZ3D162BBHR5--

11/14/20110:00328199557ELZ3D162BBHR51019611308

11/14/20110:00329209557ELZ3D162BBHR53070617878

11/14/20110:00330015154AVLU1163BBHR5--

11/14/20110:00331115154AVLU1163BBHR51268723993

11/14/20110:00332215154AVLU1163BBHR549363485

11/14/20110:00333315155AVLU2164BBHR5--

11/14/20110:00334415155AVLU2164BBHR59692276238

11/14/20110:00335515155AVLU2164BBHR56908691815

11/14/20110:00336615156AVLU3165BBHR5--

11/14/20110:00337715156AVLU3165BBHR5242199588659

11/14/20110:00338815156AVLU3165BBHR5275648233128

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11/14/20110:0034226914CBF1166BBHR5130533144493

11/14/20110:0034336915CBF2167BBHR5--

11/14/20110:0034446915CBF2167BBHR5157783157426

11/14/20110:0034556915CBF2167BBHR54788744009

11/14/20110:0034666915CBF2167BBHR54415228515

11/14/20110:0034776916CBF3168BBHR5--

11/14/20110:0034886916CBF3168BBHR516952051387947

11/14/20110:0034996916CBF3168BBHR55707844031

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11/14/20110:00353139201CBF2D170BBHR5--

11/14/20110:00354149201CBF2D170BBHR5265472210339

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11/14/20110:00356169201CBF2D170BBHR5499510942

11/14/20110:00357179202CBF3D171BBHR5--

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11/14/20110:00372129061CGR1D175BBHR52196929581

11/14/20110:00373139062CGR2D176BBHR5--

11/14/20110:00374149062CGR2D176BBHR51608019349

11/14/20110:00375159062CGR2D176BBHR51528728882

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11/14/20110:00380209063CGR3D177BBHR5199802214576

11/14/20110:0038101277UAMO1178BBHR5--

11/14/20110:0038211277UAMO1178BBHR545985463

11/14/20110:0038321277UAMO1178BBHR51005410727

11/14/20110:0038431278UAMO2179BBHR5133089312

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11/14/20110:0038651278UAMO2179BBHR557624283

11/14/20110:0038761279UAMO3180BBHR5--

11/14/20110:0038871279UAMO3180BBHR5110508456

11/14/20110:0038981279UAMO3180BBHR53386021769

11/14/20110:0039091279UAMO3180BBHR53181627312

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11/14/20110:00394316307ARNN1181BBHR553242457

11/14/20110:00395416308ARNN2182BBHR5--

11/14/20110:00396516308ARNN2182BBHR52159811976

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11/14/20110:00405149463ARNN1D184BBHR5943911831

11/14/20110:00406159464ARNN2D185BBHR5--

11/14/20110:00407169464ARNN2D185BBHR520673212

11/14/20110:00408179464ARNN2D185BBHR531765566

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11/14/20110:0041206297AFMED187BBHR5--

11/14/20110:0041316297AFMED187BBHR5--

11/14/20110:0041401643HLI1188BBHR539331811

11/14/20110:0041511643HLI1188BBHR5121833929

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11/14/20110:0044361681LUS2196BBHR5--

11/14/20110:0044471681LUS2196BBHR5352095293457

11/14/20110:0044581681LUS2196BBHR59762688686

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11/14/20110:00453169466LUS1D197BBHR55156043392

11/14/20110:00454179467LUS2D198BBHR5--

11/14/20110:00455189467LUS2D198BBHR5143357164815

11/14/20110:00456199467LUS2D198BBHR59864770570

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11/14/20110:00473159481AVU2D203BBHR539133835

11/14/20110:00474169481AVU2D203BBHR541193156

11/14/20110:00475179481AVU2D203BBHR557986364

11/14/20110:00476189482AVU3D204BBHR5--

11/14/20110:00477199482AVU3D204BBHR526661812

11/14/20110:00478209482AVU3D204BBHR544543458

11/14/20110:0047906759CGRM4205BBHR5--

11/14/20110:0048016759CGRM4205BBHR5--

11/14/20110:00481016101CDU1206BBHR5--

11/14/20110:00482116101CDU1206BBHR520083601

11/14/20110:00483216101CDU1206BBHR52932026559

11/14/20110:00484316102CDU2207BBHR552576697

11/14/20110:00485416102CDU2207BBHR53542135179

11/14/20110:00486516102CDU2207BBHR5201934158593

11/14/20110:00487616102CDU2207BBHR51721927061

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11/14/20110:00489816103CDU3208BBHR55162354454

11/14/20110:00491109300CDU1D209BBHR525152291

11/14/20110:0049099300CDU1D209BBHR558466467

11/14/20110:00492119301CDU2D210BBHR5--

11/14/20110:00493129301CDU2D210BBHR51488215675

11/14/20110:00494139302CDU3D211BBHR54307836675

11/14/20110:00495149302CDU3D211BBHR53769139186

11/14/20110:00496159302CDU3D211BBHR55071524080

11/14/20110:0049706239VNL1212BBHR5103737744

11/14/20110:0049816239VNL1212BBHR578117780

11/14/20110:0049926239VNL1212BBHR578506861

11/14/20110:0050036239VNL1212BBHR5109767477

11/14/20110:0050146240VNL2213BBHR518591815

11/14/20110:0050256240VNL2213BBHR531823292

11/14/20110:0050366240VNL2213BBHR572072553

11/14/20110:0050476240VNL2213BBHR519071742

11/14/20110:00507106241VNL3214BBHR51935216907

11/14/20110:00508116241VNL3214BBHR56507569145

11/14/20110:0050586241VNL3214BBHR521224100

11/14/20110:0050696241VNL3214BBHR51066520002

11/14/20110:00509129894VNL1D215BBHR511391038

11/14/20110:00510139894VNL1D215BBHR519821624

11/14/20110:00511149894VNL1D215BBHR510971222

11/14/20110:00512159895VNL2D216BBHR5106144

11/14/20110:00513169895VNL2D216BBHR512822231

11/14/20110:00514179895VNL2D216BBHR59351838

11/14/20110:00515189896VNL3D217BBHR5--

11/14/20110:00516199896VNL3D217BBHR577926429

11/14/20110:00517209896VNL3D217BBHR511812313

11/14/20110:00518219896VNL3D217BBHR51016612662

11/14/20110:00519017166VNE1218BBHR58259291491

11/14/20110:00520117166VNE1218BBHR52527627525

11/14/20110:00521217167VNE2219BBHR54777650202

11/14/20110:00522317167VNE2219BBHR55591665382

11/14/20110:00523417167VNE2219BBHR52460530628

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11/14/20110:00525617168VNE3220BBHR5109599564

11/14/20110:00526717168VNE3220BBHR51030012271

11/14/20110:00527011783INFA221BBHR5--

11/14/20110:00528111783INFA221BBHR5345910

11/14/20110:0052901624CAL1222BBHR51409511518

11/14/20110:0053011624CAL1222BBHR5775213802

11/14/20110:0053121624CAL1222BBHR57358360213

11/14/20110:0053231624CAL1222BBHR561466466

11/14/20110:0053341625CAL2223BBHR5--

11/14/20110:0053451625CAL2223BBHR5381311968

11/14/20110:0053561625CAL2223BBHR51052518049

11/14/20110:0053671625CAL2223BBHR593168664

11/14/20110:00539101626CAL3224BBHR526382953

11/14/20110:00540111626CAL3224BBHR527471777

11/14/20110:0053781626CAL3224BBHR5--

11/14/20110:0053891626CAL3224BBHR511621207

11/14/20110:00541129558CAL1D225BBHR5--

11/14/20110:00542139558CAL1D225BBHR519593116

11/14/20110:00543149558CAL1D225BBHR51644723997

11/14/20110:00544159559CAL2D226BBHR527443842

11/14/20110:00545169559CAL2D226BBHR528033320

11/14/20110:00546179559CAL2D226BBHR531162275

11/14/20110:00547189560CAL3D227BBHR5--

11/14/20110:00548199560CAL3D227BBHR512272261

11/14/20110:00549015024HSM1228BBHR5--

11/14/20110:00550115024HSM1228BBHR544712235

11/14/20110:00551215024HSM1228BBHR51182213092

11/14/20110:00552315024HSM1228BBHR5185265360238

11/14/20110:00553411684HSMD229BBHR5--

11/14/20110:00554511684HSMD229BBHR5125589692

11/14/20110:00555611684HSMD229BBHR52732418038

11/14/20110:00556711684HSMD229BBHR583285244

11/14/20110:00557011115BRAM1230BBHR51510121351

11/14/20110:00558111115BRAM1230BBHR599927598

11/14/20110:0055901986FLGR1231BBHR56778865419

11/14/20110:0056011986FLGR1231BBHR5206286191036

11/14/20110:0056121986FLGR1231BBHR5175349110359

11/14/20110:0056231987FLGR2232BBHR55678922845

11/14/20110:0056341987FLGR2232BBHR54990142710

11/14/20110:0056451987FLGR2232BBHR57328047587

11/14/20110:0056561988FLGR3233BBHR588847930

11/14/20110:0056671988FLGR3233BBHR52469720738

11/14/20110:0056781988FLGR3233BBHR53072827222

11/14/20110:0056891988FLGR3233BBHR5735912482

11/14/20110:0056901610ANE1234BBHR5--

11/14/20110:0057011610ANE1234BBHR513561526

11/14/20110:0057121610ANE1234BBHR515433594

11/14/20110:0057231611ANE2235BBHR5--

11/14/20110:0057341611ANE2235BBHR510871348

11/14/20110:0057451611ANE2235BBHR524292871

11/14/20110:0057561612ANE3236BBHR51855937

11/14/20110:0057671612ANE3236BBHR53689036340

11/14/20110:0057781612ANE3236BBHR517821507

11/14/20110:0057891612ANE3236BBHR51012752

11/14/20110:00579109515ANE1D237BBHR51048116878

11/14/20110:00580119515ANE1D237BBHR515091192

11/14/20110:00581129515ANE1D237BBHR518802885

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11/14/20110:00931511710MUSG2332BBHR5--

11/14/20110:00932611710MUSG2332BBHR51733812690

11/14/20110:00933711710MUSG2332BBHR51398014750

11/14/20110:009361011711MUSG3333BBHR51884621763

11/14/20110:009371111711MUSG3333BBHR58115898770

11/14/20110:00934811711MUSG3333BBHR53282861654

11/14/20110:00935911711MUSG3333BBHR52343934370

11/14/20110:00938121994MUSG1D334BBHR52528017933

11/14/20110:00939131994MUSG1D334BBHR53147727884

11/14/20110:00940141994MUSG1D334BBHR51718016679

11/14/20110:0094101148CAR1335BBHR545065995

11/14/20110:0094211148CAR1335BBHR51854321102

11/14/20110:0094321148CAR1335BBHR53244532249

11/14/20110:0094431149CAR2336BBHR5--

11/14/20110:0094541149CAR2336BBHR5189217223627

11/14/20110:0094651149CAR2336BBHR5258940582135

11/14/20110:0094761149CAR2336BBHR5116471103493

11/14/20110:0094871149CAR2336BBHR5194470239622

11/14/20110:00951101150CAR3337BBHR51783622582

11/14/20110:00952111150CAR3337BBHR564659643

11/14/20110:0094981150CAR3337BBHR5--

11/14/20110:0095091150CAR3337BBHR52352725822

11/14/20110:00953129278CAR1D338BBHR51491521010

11/14/20110:00954139278CAR1D338BBHR5769112321

11/14/20110:00955149279CAR2D339BBHR5--

11/14/20110:00956159279CAR2D339BBHR51148417195

11/14/20110:00957169279CAR2D339BBHR52760942815

11/14/20110:00958179279CAR2D339BBHR571718602

11/14/20110:00959189279CAR2D339BBHR51344222144

11/14/20110:00960199279CAR2D339BBHR55060227312

11/14/20110:00961209280CAR3D340BBHR5--

11/14/20110:00962219280CAR3D340BBHR594405789

11/14/20110:00963229280CAR3D340BBHR51339411842

11/14/20110:00964011348MCM1341BBHR5--

11/14/20110:00965111348MCM1341BBHR566098113

11/14/20110:00966211348MCM1341BBHR575626115

11/14/20110:00967311348MCM1341BBHR546013811

11/14/20110:00968411349MCM2342BBHR553309614

11/14/20110:00969511349MCM2342BBHR565300118

11/14/20110:00970611349MCM2342BBHR575067018

11/14/20110:00971711349MCM2342BBHR516438011

11/14/20110:009741011350MCM3343BBHR544888712

11/14/20110:009751111350MCM3343BBHR532248011

11/14/20110:00972811350MCM3343BBHR594771316

11/14/20110:00973911350MCM3343BBHR534602311

11/14/20110:0097606139ANU1344BBHR5--

11/14/20110:0097716139ANU1344BBHR5751561

11/14/20110:0097826139ANU1344BBHR51136738

11/14/20110:0097936140ANU2345BBHR5--

11/14/20110:0098046140ANU2345BBHR521711892

11/14/20110:0098156140ANU2345BBHR548873253

11/14/20110:0098266140ANU2345BBHR563915932

11/14/20110:0098376141ANU3346BBHR51282597

11/14/20110:0098486141ANU3346BBHR5653421

11/14/20110:0098596141ANU3346BBHR516541972

11/14/20110:00986109498ANU1D347BBHR52814225611

11/14/20110:00987119498ANU1D347BBHR558577132

11/14/20110:00988129498ANU1D347BBHR524382657

11/14/20110:00989139499ANU2D348BBHR51425

11/14/20110:00990149499ANU2D348BBHR511781862

11/14/20110:00991159499ANU2D348BBHR534862693

11/14/20110:00992169500ANU3D349BBHR554965387

11/14/20110:00993179500ANU3D349BBHR528872598

11/14/20110:00994189500ANU3D349BBHR518232743

11/14/20110:0099506178TES1350BBHR5--

11/14/20110:0099616178TES1350BBHR51458815162

11/14/20110:0099726179TES2351BBHR5--

11/14/20110:0099836179TES2351BBHR58227975886

11/14/20110:0099946179TES2351BBHR578863102080

11/14/20110:00100056179TES2351BBHR5140416174550

11/14/20110:001005106180TES3352BBHR594127180217

11/14/20110:001006116180TES3352BBHR57821269649

11/14/20110:00100166180TES3352BBHR52297115434

11/14/20110:00100276180TES3352BBHR5260188158886

11/14/20110:00100386180TES3352BBHR54594437415

11/14/20110:00100496180TES3352BBHR58629994907

11/14/20110:001007129540TES1D353BBHR5--

11/14/20110:001

Documents

[XX Project] Analysis Report on Call Drop Problems.doc