Drop Call increase after ******** GSR10 upgrade

[engaom]

Dear Experts;

Does anyone has face the issue of drop call increase after upgrading to GSR 10 in ******** equipments?

The issue that we have is increase of Drop due to Drop equation changes;OUT_INTER_BSS_HO_FAIL starts to peg with very high values ;mainly form figure of hundreds to a figure of thousands.

Also; What is the most accurate Drop Call Equation we can use in order to have a real figure for the Drop?

Appreciate your feedback?

Thanks

[usama0795]

In previous software loads, a small number of outgoing inter BSS handover attempts did not result in an outcome being pegged in the raw statistic OUT_INTER_BSS_HO, resulting in the following calculation failing to hold true
OUT_INTER_BSS_HO_ATMPT = OUT_INTER_BSS_HO_SUC + OUT_INTER_BSS_HO_FAIL + OUT_INTER_BSS_HO_RETURN + OUT_INTER_BSS_HO_CLEARED
Previously during an inter BSS handover, if the MSC sent a BSSMAP Clear Command to the source BSC with cause value ‘Radio Interface Failure’ then none of the OUT_INTER_BSS_HO bins would be pegged. A fix was delivered in current software load and all software load, which will ensure that OUT_INTER_BSS_HO_FAIL will be pegged during an inter BSS handover, if the MSC sends a BSSMAP Clear Command to the source BSC with cause value ‘Radio Interface Failure’ . But to highlight the changes are purely statistical and doesnot effect network perfomance from a subscriber perspective.

[engaom]

Appreciate your reply;
But Why OUT_INTER_BSS_HO_CLEARED has been removed from the equation, as previously it was considered as a drop cause?

I mean what was the difference betweem the OUT_INTER_BSS_HO_FAIL & OUT_INTER_BSS_HO_CLEARED.

If you have any documents illustrating such modification, please share it

[engaom]

OUT_INTER_BSS_HO_CLEARED: is pegged when a BSSMAP Clear Command message withcause value 0x09h (Call Control) is received from the MSC during an inter BSS HO procedure.

OUT_INTER_BSS_HO_FAIL: is pegged when a BSSMAP Clear Command message with cause value 0x00h (Radio Interface Message Failure) or 0x01h (Radio Interface Failure) is received from the MSC during an inter BSS HO procedure.

Which one is more significant?Why we removed the CLEARED although it was added before?

Appreciate Your Feedback

[usama0795]

OUT_INTER_BSS_HO_CLEARED has never been considered as part of drop call rate as numenatio and denominator of DCR formula is shared below:
Num: RF_LOSSES_TCH_ROLL+INTRA_CELL_HO_LOSTMS+OUT_INTRA_BSS_HO_LOSTMS+ OUT_INTER_BSS_HO_FAIL+OUT_INTER_BSS_HO_EQUIP_FAIL
DENOM: TOTAL_CALLS+ASSGN_REDIRECT + (IN_INTER_BSS_HO_SUC+ IN_INTRA_BSS_HO_SUC) - (OUT _INTER_BSS_HO_SUC + OUT_INTRA_BSS_HO_SUC)

In case of out_inter_BSS_HO Fail measurement is triggered when source BSC recieves clear command message from the MSC. This measurement is based on cause carried in clear command message (Cause: Radio interface message failure / radio interface failure / equipment failure / OM intervention / preemption / invalid message / protocol error between BSS and NSS / other causes)....all these causes contribue to drop call........but in case on out_inter_BSS_HO_cleared is based on number of call clearing initiated by both in MS and NSS, meaning user can abort a call during HO or call can be aborted cosidering mismatch of MS frequecy type power class as info given by ClassMark3 message doesnot match with BTS capability (DO CHECK THIS REASONING OUT SINCE I AM NOT TOO SURE DONT WORK ON ******** ANY MORE).......

[wnsworld]

Any one teach me how to create external proxy cells through scrips..

Actully ******** is new for us and we want change BSIC of some cells, its not propagate in external OMCs NBRs when we change through scrips,

I want to know is there any command to create proxy cell and update BSIC??

Pls upload "Parameter Manual ******** GSR10"

Thanks in advanced..


BR//
WNS..