Basic KPI 2GKPI FormulaBasic KPI optimization guideline

KPI Formula1. Traffic

K3014:Traffic Volume on TCHK3034:TCHH Traffic VolumeK3004:Traffic Volume on SDCCH

KPI Formula2. TCR=(K3021+K3011A)/(K3020+K3010A)*100

TCR=No Subcriber Perceived TCH Congestion(D-C)/No TCH Ass Att(D-C)*100

K3021:Failed TCH Seizures due to Busy TCH (Signaling Channel)K3011A:Failed TCH Seizures due to Busy TCH (Traffic Channel)K3020:TCH Seizure Requests (Signaling Channel)K3010A:TCH Seizure Requests (Traffic Channel)

KPI Formula3. SCR=K3001/K3000*100

SCR=No SDCCH Congestion(D-C)/No SDCCH Attemp(D-C)*100

K3001:Failed SDCCH Seizures due to Busy SDCCHK3000:SDCCH Seizure Requests

KPI Formula3. SDR= CM30/K3003*100

SDR=No SDCCH Drop(D-C)/No SDCCH Assignment Success(D-C)*100

CM30:Call Drops on SDCCHK3003:Successful SDCCH Seizures

KPI Formula4. CSSR= (1- CM30/K3003)*(K3023+K3013A)/(K3020+K3010A)*100

CSSR=(1- SDR/100)*(TCH assign Succes /TCH assign attemp)*100

CM30:Call Drops on SDCCHK3003:Successful SDCCH SeizuresK3023:Successful TCH Seizures (Signaling Channel)K3013A:Successful TCH Seizures (Traffic Channel)K3020:TCH Seizure Requests (Signaling Channel)K3010A:TCH Seizure Requests (Traffic Channel)])

KPI Formula5. CDR= CM33 / (K3013A + CH323 + CH343 - CH313 - CH333) *100

CDR=No TCH Drop(D-C)/(No TCH Ass Succ(D-C)+No Incomming HO Suc(D-C)-No Outgoing HO Suc(D-C))*100

CM33:Call Drops on Traffic ChannelK3013A:Successful TCH Seizures (Traffic Channel)CH323:Successful Incoming Internal Inter-Cell HandoversCH343:Successful Incoming External Inter-Cell HandoversCH313:Successful Outgoing Internal Inter-Cell HandoverCH333:Successful Outgoing External Inter-Cell Handovers

KPI Formula6. HOSR= (CH313 + CH333) / (CH310 +CH330) *100

HOSR=No Outgoing HO Suc(D-C)/No Outgoing HO Att(D-C)*100

CH313:Successful Outgoing Internal Inter-Cell HandoverCH333:Successful Outgoing External Inter-Cell HandoversCH311:Outgoing Internal Inter-Cell Handover CommandsCH331:Outgoing External Inter-Cell Handover Commands

KPI Formula7. TU=K3014 / Traffic offer*100K3014:Traffic Volume on TCHNumber of available TCH = S3655*8 -CR3000/8 - CR3001 -1

S3655:Activated TRXs in cellCR3000:Number of Initially Configured Channels SDCCH CR3001:Number of Initially Configured Channels Static PDCHTraffic offer = vlookup (Number of available TCH, Erlang B)

KPI Formula8. LUSR=Number of LU Suc/Number of LU Att.*100

No. of LU Suc=Success No of Location Update Inter_VLR Require + Success No of Location Update Intra_VLR Require

No. of LU Att = Number of Location Update Inter_VLR Require+Number of Location Update Intra_VLR Require

KPI Formula8. PSR=No. of Pag succ/No. of 1st Paging Att*100

No. of 1st Paging Att=Number of Repeated Paging Responses to A Interface + Number of First Paging Responses to A Interface

No. of Pag succ =Number of First Pagings from A Interface-Paging Global

Basic KPI optimization guideline1. CongestionTCR:Due to faulty TRX, faulty transmission.Traffic is high (cell has low configuration).The neighboring cell failure and out of service or faulty TRX.Due to special events (traffic is sudden high).

Basic KPI optimization guideline1. CongestionSCR:Due to faulty TRX, faulty transmission.Traffic is high (cell has low configuration).The neighboring cell failure and out of service or faulty TRX.Due to special events (traffic is sudden high).Cell is located at the edge of LAC

Basic KPI optimization guideline1. CongestionHR/SDCCHCRO, PTPower levelLayer, Inter-layer HO ThresholdLoad HO

Basic KPI optimization guideline2. HandoverHOSR:The neighboring cell has hardware problem(TRX communication alarm, Radio link prompt arlam, Diversity receive channel arlam) Due to interference with other nearby cellsMissing neighbor or unreasonable neighborFail due to better cell

Basic KPI optimization guideline2. HandoverH371A:Cell Outgoing Handover Commands (Uplink Quality)H371B:Cell Outgoing Handover Commands (Downlink Quality) H371C:Cell Outgoing Handover Commands (Uplink Strength) H371D:Cell Outgoing Handover Commands (Downlink Strength) H371E:Cell Outgoing Handover Commands (Timing Advance) H371F:Cell Outgoing Handover Commands (Better Cell) H371G:Cell Outgoing Handover Commands (Load) H371H:Cell Outgoing Handover Commands (Rapid Level Drop) H371I:Cell Outgoing Handover Commands (MSC Intervention) H371J:Cell Outgoing Handover Commands (OM Intervention) H371L:Cell Outgoing Handover Commands (Other Causes)

Basic KPI optimization guideline2. HandoverH372A:Failed Cell Outgoing Handovers (Uplink Quality) H372B:Failed Cell Outgoing Handovers (Downlink Quality) H372C:Failed Cell Outgoing Handovers (Uplink Strength) H372D:Failed Cell Outgoing Handovers (Downlink Strength) H372E:Failed Cell Outgoing Handovers (Timing Advance) H372F:Failed Cell Outgoing Handovers (Better Cell) H372G:Failed Cell Outgoing Handovers (Load)H372H:Failed Cell Outgoing Handovers (Rapid Level Drop) H372I:Failed Cell Outgoing Handovers (MSC Intervention) H372J:Failed Cell Outgoing Handovers (OM Intervention) H372L:Failed Cell Outgoing Handovers (Other Causes)

Basic KPI optimization guideline3. Call dropSDR:- CM360:Call Drops on Radio Interface in Stable State (Signaling Channel) - CM361:Call Drops on Radio Interface in Handover State (Signaling Channel) - CM362:Call Drops due to No MRs from MS for a Long Time (Signaling Channel) - CM363:Call Drops Due to Abis Terrestrial Link Failure (Signaling Channel) - CM364:Call Drops due to Equipment Failure (Signaling Channel) - CM365:Call Drops due to Forced Handover (Signaling Channel)

Basic KPI optimization guideline3. Call dropSDR:CM364:Call Drops due to Equipment Failure (Signaling Channel)Site level: Check transmission qualityCheck DIP SWITCH (DTMU, DCSU, GTMU)High temperatureCell level:Check connection (Tx, Rx, connector)Replace card

Basic KPI optimization guideline3. Call dropSDR:CM362:Call Drops due to No MRs from MS for a Long Time (Signaling Channel) CM363:Call Drops Due to Abis Terrestrial Link Failure (Signaling Channel) CM365:Call Drops due to Forced Handover (Signaling Channel)

Basic KPI optimization guideline3. Call dropSDR:- CM360:Call Drops on Radio Interface in Stable State (Signaling Channel) - CM361:Call Drops on Radio Interface in Handover State (Signaling Channel)

Basic KPI optimization guideline3. Call drop TCH call drop means TCH channel is released abnormally after it is occupied successfully.CDR:- CM330:Call Drops on Radio Interface in Stable State (Traffic Channel)- CM331:Call Drops on Radio Interface in Handover State (Traffic Channel)- CM332:Call Drops due to No MRs from MS for a Long Time (Traffic Channel)- CM333:Call Drops due to Abis Terrestrial Link Failure (Traffic Channel)- CM334:Call Drops due to Equipment Failure (Traffic Channel) - CM335:Call Drops due to Forced Handover (Traffic Channel)

Basic KPI optimization guideline3. Call dropCDR:CM334:Call Drops due to Equipment Failure (Traffic Channel) Site level: Check transmission qualityCheck DIP SWITCH (DTMU, DCSU, GTMU)High temperatureCell level:Check connection (Tx, Rx, connector)Replace card

Basic KPI optimization guideline3. Call dropCDR:CM332:Call Drops due to No MRs from MS for a Long Time (Traffic Channel)CM333:Call Drops due to Abis Terrestrial Link Failure (Traffic Channel)CM335:Call Drops due to Forced Handover (Traffic Channel)

Basic KPI optimization guideline3. Call dropCDR:- CM330:Call Drops on Radio Interface in Stable State (Traffic Channel)- CM331:Call Drops on Radio Interface in Handover State (Traffic Channel)

Basic KPI optimization guideline3. Call drop

Basic KPI optimization guideline3. Call drop

Basic KPI optimization guideline3. Call dropCDR:-Interference Co-channel interferenceAdjacent-channel interferenceEquipment interference -Poor coverage Coverage holeIsolated islandUplink/downlink imbalance-Improper parameter settingRadio link timeout, SACCH multi-framesHandover parametersPower control parameters

Basic KPI optimization guideline3. Call dropCDR:- Equipment problem (Antenna, feeder, combiner, TRX)- Clock problem- Transmission problem- SW not actived

Basic KPI optimization guideline3. Call dropHigh call dropChange coverageChange neighborChange frequencyChange ParameterChange Basic parameterChange HO parameterChange PC parameterChange Other parameterTMA, TMB, RepeaterAdd new cell, cositeAdd new site

Basic KPI optimization guideline3. Call drop

Basic KPI optimization guideline3. Call drop

Basic KPI optimization guideline3. Call drop