3g Kpi Optimization and Drive Test Analysis Process

Slide 1

3G RF kpi analysis ProcessPrepared By: Shailendra Kumar Singh

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2011-12-18 1Index1. PROCESS kpi OF OPTIMIZATION a. Accessibility Analysis b. Retainability Analysis c. Mobility Analysis

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Do not add objects or text in the footer areaEricsson Internal | 2011-12-18 | Page # 2011-12-18 23g kpi and optimizationSlide titleminimum 48 pt

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2011-12-18 33g kpiKPIs are divided into 3 categories.

1. AccessibilityThe ability of a user to obtain arequested Accessibility service from the system.

2. RetainibilityThe ability of user to retain its requested serviceonce connected for the desired duration.

3. MobilityThe ability to provide the requestedservice to the user with mobility.

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Do not add objects or text in the footer areaEricsson Internal | 2011-12-18 | Page # 2011-12-18 43g kpi- AccessibilityAccessibility KPIs are further categories on the base of Circuit Switched and Packet Switched Services.

For CS Services:Rrc connection success rate csRab setup success rate cs

For pS Services:Rrc connection success rate psRab setup success rate PsRab setup success rate hsSlide title minimum 32 pt(32 pt makes 2 rows

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Do not add objects or text in the footer areaEricsson Internal | 2011-12-18 | Page # 2011-12-18 53g kpi- AccessibilityCheck for Hardware/Alarm and escalate it to L1FM.Check for CE Utilization. CE expansion required or Traffic Shift.Check for frequent outage in the Cell.Check for UL Interference in the Cell.Check for E1 error on Cell.Check Propagation Delay in order to detect overshooting cells.

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Do not add objects or text in the footer areaEricsson Internal | 2011-12-18 | Page # 2011-12-18 63g kpi- RetainibilityRetainibility KPIs are further categories on the base of Circuit Switched and Packet Switched Services.

For CS Services:Cs call drop

For pS Services:Ps dropHs drop

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Do not add objects or text in the footer areaEricsson Internal | 2011-12-18 | Page # 2011-12-18 73g kpi- RetainibilityCheck for Hardware/ Alarm Check. In case of any issue escalate it to L1FM.Check for Missing Neighbor and if required perform Neighbor Tuning (3G-3G and 3G-2G).Check for CE Utilization. If it is greater than 80%, CE expansion needed/Traffic Shifting.Check for the E1 errors on the Source.Check for the UL interference.Check for Frequent Outage on the Source and Neighbors.

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Do not add objects or text in the footer areaEricsson Internal | 2011-12-18 | Page # 2011-12-18 83g kpi- mobilityMobility KPIs are further categories on the base of Circuit Switched and Packet Switched Services.

For CS Services:SHO CSIRAT CS

For pS Services:SHO PSIRAT PS

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Do not add objects or text in the footer areaEricsson Internal | 2011-12-18 | Page # 2011-12-18 93g kpi- mobilityNeighbor tuning on the basis of Handover attempts for both type of relations 3G-3G and 3G-2G.Hardware and Alarm check on Source and Neighbors.Cell availability of Neighbor Cells.Possibility of High Utilization on target cell.Check for UL Interference.Check for E1 errors on target cell.Check for SD & TCH Blocking on target 2G cells. (IRAT CS) PDCH Blocking on target 2G Cells. Generally if it is >5%, we recommend 2G Data team to remove this or give reset in case cell is hanged. (IRAT PS)

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Do not add objects or text in the footer areaEricsson Internal | 2011-12-18 | Page # 2011-12-18 10Drive test analysisABUJA PART2 ROUTESlide titleminimum 48 pt

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2011-12-18 11 DATA CALL(MS1) EC/IO

At the time of drive the cell AB0041J oriented towards this area was not Radiating due to which poor RSCP & poor EC/IO observed Slide title minimum 32 pt(32 pt makes 2 rows

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Do not add objects or text in the footer areaEricsson Internal | 2011-12-18 | Page # 2011-12-18 12 DATA CALL(MS1) RSCP

AB0035 is Down During DriveAt the time of drive the cell oriented towards this area was not Radiating due to which poor RSCP & poor EC/IO observed Slide title minimum 32 pt(32 pt makes 2 rows

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Do not add objects or text in the footer areaEricsson Internal | 2011-12-18 | Page # 2011-12-18 13DATA CALL(MS1) RLC DL Throughput

No Data Call Observed on the Route EncircledAB0035 is Down During DriveSlide title minimum 32 pt(32 pt makes 2 rows

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Do not add objects or text in the footer areaEricsson Internal | 2011-12-18 | Page # 2011-12-18 14CQI/ RLC Throughput Plot

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Do not add objects or text in the footer areaEricsson Internal | 2011-12-18 | Page # 2011-12-18 15RSCP/Throughput Plot

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Do not add objects or text in the footer areaEricsson Internal | 2011-12-18 | Page # 2011-12-18 16IRAT CS Handover

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Do not add objects or text in the footer areaEricsson Internal | 2011-12-18 | Page # 2011-12-18 17REMARKS and CONCLUSIONCells of site AB0035 were not radiating at the time of Drive test, which causes bad coverage/throughput. No data call observed in the upper part of the drive route ( as route encircled in slide 4). Need re drive for data call for this route.

At the time of drive the cell AB0041J oriented towards this area was not Radiating due to which poor RSCP & poor EC/IO observed

Few events with missing neighbors observed, the same will be implemented IF Required

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Do not add objects or text in the footer areaEricsson Internal | 2011-12-18 | Page # 2011-12-18 182G-3G Cell ReselectionThe purpose of this section is to give one practical solution to solve the problem of 2G to 3G cell reselection and IRAT hand over appeared in the any network.Slide title minimum 32 pt(32 pt makes 2 rows

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Do not add objects or text in the footer areaEricsson Internal | 2011-12-18 | Page # 2011-12-18 192G to 3G Cell Reselection Process2G to 3G Cell re selection process will occur when the criteria below are satisfied:

CPICH RSCP RXlev>FDDQOFF and CPICH Ec/No> FDDQMIN.Slide title minimum 32 pt(32 pt makes 2 rows

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Do not add objects or text in the footer areaEricsson Internal | 2011-12-18 | Page # 2011-12-18 20Coverage related to CPICH RSCP and CPICH Ec/Io

The table gives the Coverage related to CPICH RSCP and CPICH Ec/Io.Slide title minimum 32 pt(32 pt makes 2 rows

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Do not add objects or text in the footer areaEricsson Internal | 2011-12-18 | Page # 2011-12-18 212G to 3G Cell Selection Parameters definition The optimal parameters which should be set are:QSC=7, QSCI=1, QSI=7, FDDMRR=1,FDDQMIN=7,FDDQOF=0, SPRIO=yes; The initial parameters are: QSC=7, QSCI=1, QSI=7, FDDMRR=1,FDDQMIN=0,FDDQOF=8, SPRIO=yes;Slide title minimum 32 pt(32 pt makes 2 rows

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Do not add objects or text in the footer areaEricsson Internal | 2011-12-18 | Page # 2011-12-18 222G-3G RESELECTION PARAMETER DESCRIPTIONS

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