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Senior Member
Reputation: 446
ameliorate CSSR 2G
Hello Friends,
Somebody it is it, how I could ameliorate CSSR on techonogie Alcatel 2G Beforehand thank you for your help
Best Regards
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2009-04-17 02:16 AM
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u must know that cssr in Alcatel is computed as (1-sd drop)*(1-ass tch fail) so u must tune those two indicator ( sd drop and tch ass fil) :
1-sd drop tuning : u must differenciate sd drop : bss, or radio in case of radio u can tune fréquency change , change sd to other trx or enable ho sd parameter.
2- tch ass fial : chek cong tch tuning by increasing capacity : DR, FDR, HR...
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Senior Member
Reputation: 446
For me CSSR = (SDCCH Seizure SR) * (1 - SDCCH drop rate) * (TCH Normal Assignment SR)
thanks for your response, I'll check the next week.
BR
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ok, as you know. CSSR= 1- CSF ( call setup failure ), so if you improve the CSSR that similar decrease the CSF, right ?
Call setup failure can be categorised as follow :
Failure befor assignment (SDCCH RF loss, MSC rejection, user clearning,...)
Block TCH assignment ( Insufficient TCH resources)
Failed Assignment ( Failure to assign to TCH due to RF reason, eg. Interference )
don't forget click thank and reputation.
ps : click thank and reputation, i will share you the interesting doccument about this problem
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Junior Member
Reputation: 10
Originally Posted by
nabil el haddani
Hi guys,
there is a document explaining how to improve CSSR KPI in Alcatel BSS
don't forget click thank and reputation
Regards
Nabil
Thanks for show./.
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