Question SDCCH Blocking and SDCCH Congestion

[jitendracellplan]

what is difference between SDCCH Blocking and SDCCH Congestion


Thanks in advance.

[zlobster]

what is difference between SDCCH Blocking and SDCCH Congestion


Thanks in advance.

It depends on the vendor. Usually, SDCCH congestion is the 'soft' blocking, i.e. the mobile requests are put in a queue and waiting there for an available SDCCH. The system then pegs SDCCH congestion. If however the system cannot find available SDCCH for a given time, for a MS waiting in the queue, then SDCCH blocking is observed. A 'hard' blocking.

Again, IMHO that's quite vendor specific and in general it's considered the same.

[zhanglw268]

SDCCH congestion means that all SDCCHs are occupied and no free SDCCH left. SDCCH congestion gives the time when no resource are available.

SDCCH blocking means that all SDCCHs are occupied and there are still further SDCCH requests but no SDCCH resources available, so this causes blocking. Please note that mobile can't be put to queue and waiting for SDCCH except that mobile is already on SDCCH and SDCCH handover is enabled.

It is possible there is congestion but no blocking if there is no further SDCCH request. If you have blocking, you must have congestion. It is possible that there is high blocking (peak attempts) but low congestion.

[Bifeaza]

Hi ,

I understand my "request" is totally different but do you have any idea why I have this :initial state: reported as " block"?CER block channel.jpg

Thank you

[plannerguy]

Hi

It may stated as below

Blocking is measured in number of attempts and congestion is measured in terms of time.i.e

If all 8 timeslots are occupied then a fresh attempt will cause blocking.

But if no attempts are there then there is no blocking.


in same senario we have congestion for a specific time,i.e as all the resources are occupied .


Regards
Plannerguy

"pls add thansk and rep if found good"