2G KPI mapping V1.0

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2G KPI mappingHUAWEI TECHNOLOGIES CO., LTD.:40-47pt :26-30pt: :FrutigerNext LT Medium : Arial

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www.huawei.comHuawei Confidential :32-35pt : R153 G0 B0 :FrutigerNext LT Medium : Arial

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Page 2KPI Mapping---Traffic (((TFTRALACC+TFTRALSUB)/(TFNSCAN+0.0000000000001))+((THTRALACC+THTRALSUB)/(THNSCAN+0.00000000001)))TFTRALACC/TFNSCAN + THTRALACC /THNSCAN : the average level of all TCH traffic in a cell (underlaid + overlaid) in Erlang.

TFTRALSUB/TFNSCAN + THTRALSUB /THNSCAN : specific counter for overlaid subcell TCH traffic

The given Ericssion formula calculates the overlaid subcell TCH traffic twice. If there is no concentric cell, TFTRALSUB and THTRALSUB should be 0. It is suggested to exclude the overlaid counters TFTRALSUB and THTRALSUB.Mapping resultTCH Traffic=K3014+K3024Huawei Confidential :32-35pt : R153 G0 B0 :FrutigerNext LT Medium : Arial

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Page 3KPI Mapping---TCH Congestion Rate (%) 100*((CNRELCONG)+(TFNRELCONG+TFNRELCONGSUB+THNRELCONG+THNRELCONGSUB))/ (TASSALL)For the direct retry, Ericssion calculates it on the target cell. However, Huawei calculates it on the severing cell. For cluster level, there is little difference. However, for cell level , there may be some difference for different cell.Mapping resultK3011A/K3010AHuawei Confidential :32-35pt : R153 G0 B0 :FrutigerNext LT Medium : Arial

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Page 4KPI Mapping---Dropped Call Rate (%) 100*(( (TFNDROP+TFNDROPSUB+THNDROP+THNDROPSUB) )-( (TFNRELCONG+TFNRELCONGSUB+THNRELCONG+THNRELCONGSUB) ))/ (TCASSALL)Mapping resultCM33/(K3013A+A3129H)For the direct retry, Ericssion calculates it on the target cell. However, Huawei calculates it on the severing cell. For cluster level, there is little difference. However, for cell level , there may be some difference for different cell.When the BSC releases the call after receiving a CLEAR CMD message from the MSC in the assignment procedure, Huawei will calculates it as Assignment failure. However, some vendors dont take it as assignment failure. Huawei can set the parameter to avoid this difference: ASSFAILSTATISTICOPT=ONHuawei Confidential :32-35pt : R153 G0 B0 :FrutigerNext LT Medium : Arial

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Page 5KPI Mapping--- SDCCH Congestion Rate (%)100 *(CCONGS) / (CCALLS)Mapping resultK3001/K3000Huawei Confidential :32-35pt : R153 G0 B0 :FrutigerNext LT Medium : Arial

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Page 6KPI Mapping--- SDCCH Drop Rate (%)100 * (CNDROP)/ (CMSESTAB)Mapping resultCM30/K3003Huawei Confidential :32-35pt : R153 G0 B0 :FrutigerNext LT Medium : Arial

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Page 7KPI Mapping--- Call Setup Success Rate (CSSR) (%)100*(1- SDCCH Congestion Rate)*(1- TCH Congestion Rate) *(1- SDCCH Drop Rate)Mapping result100*(1- K3001/K3000)*(1-K3011A/K3010A) *(1- CM30/K3003)For the direct retry, Ericssion calculates it on the target cell. However, Huawei calculates it on the severing cell. For cluster level, there is little difference. However, for cell level , there may be some difference for different cell.Huawei Confidential :32-35pt : R153 G0 B0 :FrutigerNext LT Medium : Arial

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Page 8KPI Mapping--- SDCCH Access Success Rate (%) 100*(CMSESTAB)/ (CCALLS)Mapping result(CA3030J+(H3600-H3620))/K3000Huawei Confidential :32-35pt : R153 G0 B0 :FrutigerNext LT Medium : Arial

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Page 9KPI Mapping--- Call Completion Success Rate (CCSR) (%)100*(1- SDCCH Congestion Rate)*(1- TCH Congestion Rate)*(1- SDCCH Drop Rate)*(1- Dropped Call Rate) ORCSSR*(1- Dropped Call Rate/100) Mapping result100*(1- K3001/K3000)*(1-K3011A/K3010A) *(1- CM30/K3003) *(1- CM33/(K3013A+A3129H))For the direct retry, Ericssion calculates it on the target cell. However, Huawei calculates it on the severing cell. For cluster level, there is little difference. However, for cell level , there may be some difference for different cell.Huawei Confidential :32-35pt : R153 G0 B0 :FrutigerNext LT Medium : Arial

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Page 10KPI Mapping--- Handover Success Rate (%) 100*(HO_Succ/ HO_Commands)Mapping result(CH313+CH333)/(CH311+CH331)*100Huawei Confidential :32-35pt : R153 G0 B0 :FrutigerNext LT Medium : Arial

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Page 11KPI Mapping--- Radio Rate per GPRS TimeslotCELLGPRS_CS12DLACK/(1024*0.02*CELLGPRS_CS12DLSCHED)Mapping result((L9106*23+L9107*34+L9108*40+L9109*54)*8/1024)/((L9102+L9103+L9104+L9105)*0.02)1, In the DL early TBF establishment period, Huawei counts Fake PDUs in valid blocks while Ericsson does not measure Fake PDUs.2, In the delayed release period, Huawei counts PACKs in valid blocks and total number of blocks while Ericsson does not measure PACKs.As we know, normally the throughput of the above two scenarios is not high. So that means Huawei KPI calculates some low throughput comparing with Ericssion formula. Huawei Confidential :32-35pt : R153 G0 B0 :FrutigerNext LT Medium : Arial

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Page 12KPI Mapping--- Radio Rate per EGPRS Timeslot(10*INT10BREGPRSTBF+15*INT15BREGPRSTBF+20*INT20BREGPRSTBF+25*INT25BREGPRSTBF+30*INT30BREGPRSTBF+35*INT35BREGPRSTBF+40*INT40BREGPRSTBF+45*INT45BREGPRSTBF+50*INT50BREGPRSTBF+55*INT55BREGPRSTBF)/((INT10BREGPRSTBF+INT15BREGPRSTBF+INT20BREGPRSTBF+INT25BREGPRSTBF+INT30BREGPRSTBF+INT35BREGPRSTBF+INT40BREGPRSTBF+INT45BREGPRSTBF+INT50BREGPRSTBF+INT55BREGPRSTBF))Mapping result((L9311*22+L9312*28+L9313*37+L9314*44+L9315*56+L9316*74+L9317*56+L9318*68+L9319*74)*8/1024)/((L9302+L9303+L9304+L9305+L9306+L9307+L9308/2+L9309/2+L9310/2)*0.02)1, Huawei counts Fake PDUs in valid blocks while Ericsson does not measure Fake PDUs.2, In the delayed release period, Huawei counts PACKs in valid blocks and total number of blocks while Ericsson does not measure PACKs.For this formula, Ericssion separates the to different level and then calculates the weighted average based on the different block traffic. Huawei calculates the average throughput with block traffic divided by the time which is similar as the Ericssion GPRS formula.

It is suggested Ericssion to use the following formula: CELLGPRS2_MC19DLACK/(1024*0.02*CELLGPRS2_MC19DLSCHED)Huawei Confidential :32-35pt : R153 G0 B0 :FrutigerNext LT Medium : Arial

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Page 13KPI Mapping--- TBF Establishment Rate (%)100*(1-(CELLGPRS_FAILDLTBFEST/CELLGPRS_DLTBFEST))Mapping result1-(A9103+A9303)/(A9101+A9301)Huawei Confidential :32-35pt : R153 G0 B0 :FrutigerNext LT Medium : Arial

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Page 14KPI Mapping--- PDCH Allocation Success Rate (%) 100*CELLGPRS_PCHALLFAIL/CELLGPRS_PCHALLATTMapping resultCant map.

Just for reference:Ericsson measures the competitiveness between the CS and PS resources. It is to measure the possibility of conversions from available TCHs to PDCHs.Huawei's counter measures the success rate of the configurations to the BTS. It is to measure the success rate of conversions from available TCHs to PDCHs. Huawei measures when the BSC sends configuration commands to the BTS, but Ericsson measures when the BSC determines that TCHs need to be converted to PDCHs. Huawei measures when each TCHF is converted to a PDCH, but Ericsson measures when a conversion is triggered (multiple TCHFs may be converted at a time).1-(R9342/R9341)Huawei Confidential :32-35pt : R153 G0 B0 :FrutigerNext LT Medium : Arial

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Page 15TBF establish requirementHuawei Confidential :32-35pt : R153 G0 B0 :FrutigerNext LT Medium : Arial

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Page 16THANK YOUHuawei Confidential :32-35pt : R153 G0 B0 :FrutigerNext LT Medium : Arial

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2G KPI mapping V1.0