ahmed planning
2013-05-02, 09:00 PM
dears
we have in Huawei BSC6900 the CSSR formula is
CSSR= IMM ASS success rate *(1-SDCCH drop) * TCH ASS success rate
where IMM ASS success rate equal to
IMM ASS= ((call setup indication(circuit service))/(channel request(MOC)+CH Req. (MTC) +CH. Req. (emergency call)+CH. Req.(Re-establish)+CH. Req. (location updating))
i noticed in the cell coverd large area the channel request due to location update is very large and this increase the denominator and decrease the IMM ASS value.
The most important question is : why the location update enters this equation? Although there is no location update Process during the call setup ?
i need to modify this formula without location update
so , kindly i need your support to solve this problem
we have in Huawei BSC6900 the CSSR formula is
CSSR= IMM ASS success rate *(1-SDCCH drop) * TCH ASS success rate
where IMM ASS success rate equal to
IMM ASS= ((call setup indication(circuit service))/(channel request(MOC)+CH Req. (MTC) +CH. Req. (emergency call)+CH. Req.(Re-establish)+CH. Req. (location updating))
i noticed in the cell coverd large area the channel request due to location update is very large and this increase the denominator and decrease the IMM ASS value.
The most important question is : why the location update enters this equation? Although there is no location update Process during the call setup ?
i need to modify this formula without location update
so , kindly i need your support to solve this problem