Document Title Security Level

Problem Description:

Whenever we have failures in Counters like Uu No Reply and RNL failures most of the cases we

get poor coverage issues. Because of poor coverage issues we will get CSSR poor and drop call

rate increases.

n Country ! for "perator # we got the same poor coverage issues which leads to $oor CSSR %

&igh 'R"$ call rate.

Handling Process:

(irst we need to check the failure related Counters from )*+++ to find out in which counter we

are getting most of the failures.

Counters:

,S.R#B.(ail-staCS.R(.RNL

,S.R#B.(ail-staCS.R(.SRBReset

,S.R#B.(ail-staCS.R(./RBReset

,S.R#B. (ail-sta.CS.R(.UuNoReply

,S.R#B.(ail-sta$S.R(.RNL

,S.R#B.(ail-sta.$S.R(.SRBReset

,S.R#B.(ail-sta.$S.R(./RBReset

,S.R#B. (ail-sta.$S.R(.UuNoReply

n that area the coverage is poor we tried optimi0e with physical parameter changes like -1/ilt or

)1/ilt or #0imuth changes.

2. #fter that also the coverage prolem is still there we have increase the )#!/!$WR or

decrease $C$C& $WR after taking the permission from customer.

*. (inally we have changed the reselection parameters to go in to *3 coverage.

 )"' UC-LLS-LR-S-L4C-LL'5267*899U#L)N512:89R!L-,)N51

7:8SS-#RC&R#/5*;

NP master Analysis:

2014-07-01 Huawei Proprietary - Restricted Distriution Pa!e1" Total2

 

Document Title Security Level

#fter changing these modifications we got improvement in the CSSR % 'rop call Rate

Date #ell

$D

RR#

#onn%staSuccRate#S

#SSR

&oice

0'(21(2012 2221 '0)01 '0)01

0'(22(2012 2221 *')07 *')07

0'(2+(2012 2221 '2)0, '2)0,

0'(2(2012 2221 '*)11 '*)11

0'(27(2012 2221 '*)77 '*)77

0'(2*(2012 2221 '*)*, '*)*,

Suggestions and Summary: $n some places we will .ave some covera!e .oles ecause some

issues we were unale to optimi/e it t.en do some p.ysical c.an!es or Power parameter

c.an!es or #ell resel or $RT t.res.olds to optimi/e t.e $ssue)  

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