View Full Version : TCH block & Direct retry
justdream
2010-02-16, 07:23 AM
Experts, what's the formual of calculating TCH Block rate with Directed retry
and firslty what's directed retry
Thanks a lot
RF engineer
2010-02-16, 05:45 PM
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
justdream
2010-02-16, 07:30 PM
I'm speaking about TCHblock_after Directed retry
what should be the formula :(?
RF engineer
2010-02-16, 07:47 PM
the formula is the same as i know in huawei i donot know foe other if you have manual of kpi u can see
justdream
2010-02-16, 08:07 PM
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 :hug:
RF engineer
2010-02-17, 01:19 AM
kindly share yours as in my manual I have TCHBlockRate but I don't see that ine after Directed Retry :hug:
yes there is no counter say TCh blocking with direct retry
BR
RF
taomomteling
2010-02-17, 02:24 AM
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/223316200/14c545da/DR_Report.html
Cheers,
prophecia
2011-01-08, 10:35 PM
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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