- This topic has 98 replies, 1 voice, and was last updated 10 years, 11 months ago by anand.
24th April 2008 at 13:30 #52024ogGuest
whats the difference between tch blocking and tch blocking?24th April 2008 at 16:12 #52025pixGuest
that’s a very tricky question, let me think.
oh yes, there’s a green apple with a bright mind but a cheap car, hidden in the background of the picture.25th April 2008 at 06:45 #52026ogGuest
OOPS!Sorry.i meant tch blocking and tch congestion.29th April 2008 at 09:00 #52027VanderleyGuest
blocking dives you the non served calls
congestion gives the time when no resource are available (it is possible that nobody needs them so no blocks)
there is a possiblity to have high blocking and low congestion – this means that you have a peak of the attempts.29th April 2008 at 11:19 #52028pixGuest
vanderley, this is highly dependent on the indicator formula. in alcatel for example, there is the TCH congestion rate (percentage of rejected TCH attempts / TCH requests), and the system congestion time.
there is no “blocking” per say.19th May 2008 at 05:30 #52029Ali Aamir RazaGuest
What is the difference between TCH blocking and TCH congestion?19th May 2008 at 14:19 #52030VanderleyGuest
Pix you are right it depends how the vendor calls it.
But as far as I know:
Congestion = time when all resources are occupied (no free TCH available)
Blocking = rejected (blocked) attempts over all attempts in %.
Also there is different formulas for TCH blocking. For example in subscriber perceived TCH Blocking all successful directed retries to another cell are removed from the nominator.19th May 2008 at 18:54 #52031pixGuest
i can understand how complicated it must be for operators to work with 2 or 3 different vendors ! Each vendor has their own vocabulary…20th May 2008 at 06:19 #52032Ali Aamir RazaGuest
How we can define mean holding time.21st May 2008 at 14:56 #52033VanderleyGuest
Erlang per tch seizures (usualy in seconds)27th June 2008 at 05:42 #52034Amit VermaGuest
What is the difference between TCH blocking and TCH congestion?27th June 2008 at 13:38 #52035TufailGuest
TCH COngestion Is No resources available for allacation for time “x”.
TCH Blocking is %age attempts made during TCH congestion.
Hoope it may Help..
Tufail9th July 2008 at 02:40 #52036pett_nomyGuest
What is the connection between TCH Blocking Rate and Call Setup Success Rate?
It is true if your Blocking Rate is high, your CSSR must be low?30th July 2008 at 10:01 #52037AyatGuest
is that mean the TCH congestion rate (No avaliable Resources “all the resources are busy ) and Blocking rate for another reason (is it assignment failure ??)
we need more explaination PLZ
could you give us an example .
what does mean blocking , when it occures ??
thanks30th July 2008 at 19:04 #52038pixGuest
blocking rate and congestion rate are the same thing !
it means the subscriber requests for a channel, but the BSC rejects this requet because no more channel available.
it can happen at TCH assignment or SDCCH assignment.