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Ericsson KPI Formula



KPI TargetFORMULAE - ERICSSON
5.0Network Wide KPI's (NBH)  
5.1Random Access Success Rate %>=98100 * CNROCNT / (CNROCNT + RAACCFA)
5.2SDCCH Blocking %<=0.5100 * CCONGS / CCALLS
5.3SDCCH Time Congestion/Cell<=12 sec100 * CTCONGS / (PERLEN*60)
5.4SDCCH Drop %<=1.2100 * (CNDROP - CNRELCONG) / CMESTAB
5.5TCH Blocking %<=1100 * (CNRELCONG + TFNRELCONG + THNRELCONG) / TASSALL
5.6TCH Time Congestion/Cell<=50 secCells with Full Rate only: 100 * TFTCONGS / (PERLEN*60) Cells with Half Rate: 100 * THTCONGS / (PERLEN*60)
5.7TCH Assignment Success Rate %>=97100 * TCASSALL / TASSALL
5.8TCH Drop %<=2100 * TNDROP / TCASSALL
5.9Handover Success Rate %>=95100 * HOVERSUC / HOVERCNT
6.0Network Wide KPI's (24 hrs)  
6.1Avg SDCCH Congestion/cell<=50 sec100 * CTCONGS / (PERLEN*60)
6.2Avg TCH Congestion/cell<=200 secCells with Full Rate only: 100 * TFTCONGS / (PERLEN*60) Cells with Half Rate: 100 * THTCONGS / (PERLEN*60)
6.3Network Availability (Radio)%>=99.90100 * (No of days * 24 * 60 * Total No of Cells – Summation of Downtime in minutes of Cells) / (No of days * 24 * 60 * Total No of Cells)
7.0Cell Wise KPI % (Cell Busy Hour)  
7.1Random Access Success Rate >95%>90100 * CNROCNT / (CNROCNT + RAACCFA)
7.2SDCCH Blocking <=1%>90100 * CCONGS / CCALLS
7.3SDCCH Congestion <=30 sec>90100 * CTCONGS / (PERLEN*60)
7.4SDCCH Drop <=2.5%>90100 * (CNDROP - CNRELCONG) / CMESTAB
7.5TCH Blocking <=3%>90100 * (CNRELCONG + TFNRELCONG + THNRELCONG) / TASSALL
7.6TCH Congestion <=100 sec>90Cells with Full Rate only: 100 * TFTCONGS / (PERLEN*60) Cells with Half Rate: 100 * THTCONGS / (PERLEN*60)
7.7TCH Assignment Success Rate >=95%>90100 * TCASSALL / TASSALL
7.8TCH Drop <=3%>90100 * TNDROP / ((TCASSALL + (SUMIHOSUCC - SUMIABSUCC - SUMIAWSUCC) - (SUMOHOSUCC - SUMOABSUCC - SUMOAWSUCC) + (SUMEIHOSUCC - SUMEIABSUCC - SUMEIAWSUCC) - (SUMEOHOSUCC - SUMEOABSUCC - SUMEOAWSUCC))
7.9Handover Success Rate >94%>90100 * (SUMOHSUCC + SUMEOHSUCC) / (SUMOHOATT + SUMEOHATT)
8.0Voice Quality  
8.1% of cells having SQI samples between 16-30 >90% or RxQual sub between(0-5)>95%>9090% of cells having percentage of Good samples>90%
9.0Switch KPI's  
9.1Peak Processor Load (MSCs/BSCs) %<=80ACCLOAD/NSCAN (These counters are available in object type LOAS)
9.2Switch BHCA Utilization (during Switch NBH)<=80100*( BHCA/SwitchBHCA Capacity)
9.3Paging Success Rate (24 hrs) %>=90100 * (NLAPAG1RESUCC + NLAPAG2RESUCC) / NLAPAG1TOT
9.4Location Update Success Rate (24 hrs) %>=95100 * NLALOCSUCC / NLALOCTOT
9.5Successful Call Rate (24 Hrs) %>=95(NBANS + NABEFA1 + NABEFA2 + NCAWNOA + NTOBEFA + NBOUT + NBBUSY) / NCALLS
9.6Network Availability (Switch/IN)%>99.99100 * (No of days * 24 * 60 * Total No of Nodes – Summation of Downtime in minutes of Nodes) / (No of days * 24 * 60 * Total No of Nodes) Where: Nodes are GMSCs, MSCs, SCPs, SDPs
10.0Data KPI's  
10.1Core Network Availability %>99.99100 * (No of days * 24 * 60 * Total No of Nodes – Summation of Downtime in minutes of Nodes) / (No of days * 24 * 60 * Total No of Nodes) Where: Nodes are GGSNs, SGSNs
10.2Attach Success Rate excluding Unregistered Subs. %>=99100 * [1 - ((gprsMmSgsnUnsuccAttReq - gprsMmSgsnUnsuccAttReqCC7/8/14) / gprsMmSgsnAttReq)]
10.3PDP context activation success rate (Only NW Cause codes) %>=99100 * gprsSmSgsnSuccActivations / (gprsSmSgsnSuccActivations + gprsSmSgsnUnsuccActivations) 
11.0GPRS KPIs  
11.1Round trip time<=700 msPing either a DNS server or an external Internet server by the MS PING SIZE - 32BYTE
11.2Average UL throughput per TBF>=12 kbpsULBGGTHR / ULBGGDATA
11.3Average DL throughput per TBF>=25 kbpsDLBGGTHR / DLBGGDATA
12.0EDGE KPIs  
12.1Round trip time<=300 msPing either a DNS server or an external Internet server by the MS PING SIZE - 32BYTE using Release 4 EDGE handset or Release 4 Data Card
12.2Average UL throughput per TBF>=20 kbpsULBGEGTHR / ULBGEGDATA
12.3Average DL throughput per TBF>=45 kbpsDLBGEGTHR / DLBGEGDATA
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