- This topic has 9 replies, 1 voice, and was last updated 8 years, 9 months ago by Akshaya.
25th January 2008 at 07:27 #50610SierraGuest
I have problem with my network, especially TCH allocation for several sectors facing blocking exceed in more than 100 %. Is it possible? Thanks b4.26th January 2008 at 08:45 #50611PixGuest
more than 100% blocking rate ? No it is not possible.. Is it hapening only at some hours of the day, or 24h per day ?
If 24h/d, then it might be a counter problem. As the processes that count the counters are located in the BSC, you could try to reboot those processes.26th January 2008 at 18:09 #50612BassamGuest
Actually, there are many reasons for high TCH blocking rate,for example, in ur case ,i think it is lack of TCH resources, I mean you may have a cell with small noumber of TCH(small noumber of TRXS)& this cell may be located in highly populated area,So ,the TCH of this cell being always bussy and this certenly cause high THC blocking rate.
Another reason for high TCH blocking rate is that your antenna sector is rongly directed and suffer over shotting ,it also cause lack of TCH resources.
Another reason for TCH blocking rate is HO, you have to check ur HO parameters setting(outgoing & incoming HO threshold.
IF you find no proplem in above points, then you have to check your STATISTIC TASK in UR KPI report.
If any body can tell us more or give his openion ,please let’s share knowledg.
Best Regards26th January 2008 at 20:22 #50613PixGuest
Bassam, it’s just impossible to have 100% congestion or more.
100% congestion means that there is absolutely no traffic that is carried : all the traffic is rejected.
More than 100% means that there is actually more traffic rejected than required. Not possible in our sad little world. 🙂
An extremely congested cell would have around 60% TCH “call setup” congestion rate, at most… (in my experience)28th January 2008 at 13:29 #50614ADGuest
piX, i have seen more than 80% congestion on a cell…
(Alcatel’s equipment is weird 🙂28th January 2008 at 14:30 #50615pixGuest
AD, i meant “usually 60%”.. 80% could happen, it all depends on how long you look at the RNO scren 🙂
alcatel is not weird 😛21st January 2011 at 16:44 #50616rajGuest
What are the reasons for abnormal tch blocking.where traffic is much less than the tch availabilty.23rd January 2011 at 08:29 #50617JeffGuest
hey guys ,
i had experince like this before and i found that the statistics server connected to 3 MSS together and all values were multiplied by 3 , so , as PIX said before , it should be a counter problem , it’s impposible to get more than 100 % tch drop23rd January 2011 at 08:50 #50618PixGuest
we are talking about tch blocking (or congestion), but anyway, the logic remains valid 🙂
pix6th June 2012 at 08:07 #50619AkshayaGuest
Can any one Suggest me How to remove the TCH Blocking in Nokia System.
Note: Sector having 2 ET.
Configuration: 8 TRX
FRL/FRU–AFRL/AFRU-80 & 90
Utilisation: Below 90%
NBL- Main-0. EXP-2
Lseg-Main -30, EXP-70