[og]

whats the difference between tch blocking and tch blocking?

[pix]

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.

[og]

OOPS!Sorry.i meant tch blocking and tch congestion.

[Vanderley]

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.

[pix]

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.

[Ali Aamir Raza]

What is the difference between TCH blocking and TCH congestion?

[Vanderley]

Hi,

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.

[pix]

i can understand how complicated it must be for operators to work with 2 or 3 different vendors ! Each vendor has their own vocabulary…

[Ali Aamir Raza]

How we can define mean holding time.

[Vanderley]

Erlang per tch seizures (usualy in seconds)

[Amit Verma]

What is the difference between TCH blocking and TCH congestion?

[Tufail]

Hi All,,

TCH COngestion Is No resources available for allacation for time “x”.

TCH Blocking is %age attempts made during TCH congestion.

Hoope it may Help..

Regards

Tufail

[pett_nomy]

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?

[Ayat]

Hello alll

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 ??

thanks

[pix]

ayat,

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.

[Author]

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