Ericsson CSSR Formula

This topic has 26 replies, 1 voice, and was last updated 2 years, 3 months ago by mohammed.

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26th August 2009 at 08:48 #54348

AliAsgher
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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)

25th May 2010 at 09:45 #54349

Mucky
Guest

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.

31st May 2010 at 13:17 #54350

Iwans
Guest

Hi Pak Mucky,

CMIIW
CSSR one of item in kpi which is belong to SD_DROP & SD_BLOCK

5th August 2010 at 14:30 #54351

Cha1
Guest

What are the reasons for low Originating call setup Success Rate (Low originating CSSR) in CDMA

7th September 2010 at 22:29 #54352

kashif
Guest

what is the huawei cssr formulae?

28th December 2010 at 15:57 #54353

GOWTHAMAN.P
Guest

WAT IS MEANT BY CSSR AND DCR?

15th April 2011 at 06:50 #54354

Thavam
Guest

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)

20th May 2011 at 15:14 #54355

waqas
Guest

CSSR stands for call set up success rate……it is one of the KPI’s used for measuring the performance of network

4th April 2012 at 08:18 #54356

Ibrahima
Guest

What is the process ? can you give me one example please ?

11th May 2012 at 22:57 #54357

chris
Guest

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

17th May 2012 at 07:16 #54358

Bijoy
Guest

Hi Chris
Could you pls specify the vendor.

Br\\
Bijoy

1st August 2022 at 17:56 #102842

mohammed
Guest

Hi,

The below formula is it correct to calculate CSSR from MSS level
CSSR= ( MO Assignment Success Times (times)+MT Assignment Success Times (times))/(MT Paging Response Times (times)+MO CM Service Request Times (times))*100

Your comment is highly appreciated
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