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Senior Member
Reputation: 491
TCH block & Direct retry
Experts, what's the formual of calculating TCH Block rate with Directed retry
and firslty what's directed retry
Thanks a lot
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2010-02-16 07:23 AM
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Senior Member
Reputation: 502
Originally Posted by
justdream
Experts, what's the formual of calculating TCH Block rate with Directed retry
and firslty what's directed retry
Thanks a lot
directed retry is the feature used to relief congestion an it is kind of SDCCH to TCH handover and you have to chek you congestion formula if it takes incoming HO attempts.
BR
RF
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Senior Member
Reputation: 491
I'm speaking about TCHblock_after Directed retry
what should be the formula ?
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Senior Member
Reputation: 502
the formula is the same as i know in huawei i donot know foe other if you have manual of kpi u can see
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Senior Member
Reputation: 491
Originally Posted by
RF engineer
the formula is the same as i know in huawei i donot know foe other if you have manual of kpi u can see
kindly share yours as in my manual I have TCHBlockRate but I don't see that ine after Directed Retry
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Senior Member
Reputation: 502
Originally Posted by
justdream
kindly share yours as in my manual I have TCHBlockRate but I don't see that ine after Directed Retry
yes there is no counter say TCh blocking with direct retry
BR
RF
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Member
Reputation: 148
Originally Posted by
justdream
Experts, what's the formual of calculating TCH Block rate with Directed retry
and firslty what's directed retry
Thanks a lot
It's a feature to reduce the RTCH congestion by taking the SDCCH from the Serving Idle mode Cell and the TCH from the neighbour cell if the level is good (More than -85dBm) and more free TS available (4 free TS):
here a report about the Directed Retry from ALU:
http://www.4shared.com/file/22331620...DR_Report.html
Cheers,
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Junior Member
Reputation: 10
Re: TCH block & Direct retry
Originally Posted by
justdream
Experts, what's the formual of calculating TCH Block rate with Directed retry
and firslty what's directed retry
Thanks a lot
For NSN:
100* DECODE( nvl(traffic.tch_call_req,0),0,0,( nvl(traffic.tch_call_req,0)- nvl(traffic.tch_norm_seiz,0)) / nvl(traffic.tch_call_req,0))
BR
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