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Member
Reputation: 49
2G CSSR
Does anybody know what is 2G CSSR as per GSM specs? or have relative spec document?
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2009-01-21 03:17 AM
# ADS
Circuit advertisement
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Member
Reputation: 56
CSSR
CSSR = Call Setup Seccess Ratio
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Senior Member
Reputation: 502
There are two formula
1-CSSR=(1-SDCCH drop rate)*TCH assignment success rate.
2-CSSR=immediate assignment success rate*TCH assignment sucess rate*(1-SDCCH drop rate).
BR
RF
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Senior Member
Reputation: 491
Originally Posted by
RF engineer
There are two formula
1-CSSR=(1-SDCCH drop rate)*TCH assignment success rate.
2-CSSR=immediate assignment success rate*TCH assignment sucess rate*(1-SDCCH drop rate).
BR
RF
can you please tell me what's the definition of Imm_Ass_No_Seiz_Rate?
and how to optimize it?
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Senior Member
Reputation: 502
I really donot know what is the definition can please tell me which vendor you use and how to ootimise immediate assignment check you donot have coverage problem , no Bcch interference, no co bcch/bsic , change radio parameter that has effect on RACH , access min change if you have for Rach in order to solve rach phantom
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For Alcatel,
(1-SD Drop Rate) * (1- RTCH Assignment Radio Failure Rate – RTCH Assignment BSS Failure – RTCH Assignment Prep BSS Failure Rate – RTCH Assignment Congestion Failure Rate)
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