Home » Topics » Telecom Design » Ericsson CSSR Formula
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AliAsgherGuest
It is recommended to calculate CSSR from Drive Test. Although for Ericsson systems the recommended CSSR formula is
CSSR = 100 * ([TCASSALL + TFCASSALLSUB + THCASSALL + THCASSALLSUB]/ TASSALL) * (1 – ([RAOREQ + RAAPAG + RACALRE]/CNROCNT) * (CCALLS-CMSESTAB)/CCALLS) * (1 – ([RAOREQ + RAAPAG + RACALRE]/CNROCNT)* (CNDROP – CNRELCONG)/CMSESTAB)
Hence it can be explained as
CSSR = TCH Assignment * (1-SD Establishment for TCH Calls) * (1-SD Drops for TCH Calls)
MuckyGuest
CSSR is standard to measure any call attempt which can be sucessfully be a call setup. CSSR is formula that usually used for DT KPI.
IwansGuest
Hi Pak Mucky,
CMIIW
CSSR one of item in kpi which is belong to SD_DROP & SD_BLOCK
Cha1Guest
What are the reasons for low Originating call setup Success Rate (Low originating CSSR) in CDMA
kashifGuest
what is the huawei cssr formulae?
GOWTHAMAN.PGuest
WAT IS MEANT BY CSSR AND DCR?
ThavamGuest
I want to know the expansion for the terms mentioned in following formula.
CSSR = 100 * ([TCASSALL + TFCASSALLSUB + THCASSALL + THCASSALLSUB]/ TASSALL) * (1 – ([RAOREQ + RAAPAG + RACALRE]/CNROCNT) * (CCALLS-CMSESTAB)/CCALLS) * (1 – ([RAOREQ + RAAPAG + RACALRE]/CNROCNT)* (CNDROP – CNRELCONG)/CMSESTAB)
waqasGuest
CSSR stands for call set up success rate……it is one of the KPI’s used for measuring the performance of network
IbrahimaGuest
What is the process ? can you give me one example please ?
chrisGuest
Hello
Need a Favor please
Any idea about the 2 Below KPI
– Average uplink CE congestion rate
– Power Congestion
• Which input to use
• Any Measurement Protocol
• Minimum Level
• Formula to use
Many Thanks
Chris
BijoyGuest
Hi Chris
Could you pls specify the vendor.
Br\\
Bijoy