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SDCCH blocking is high

Lohi Daniels - 30th March 2011  (15:22 GMT)

Pls what does SD blocking cause on the network?

xiaomutou - 24th March 2011  (08:48 GMT)

Actually the most often reasons behind SD blocking are :

1- poor coverage
2- improper TXinteger setting
3-LAPd delay (transmissio)
4-Cochannel/Co BSIC interference
5-UL interference + Fake access requests

hope that helps

vivek - 4th March 2011  (16:12 GMT)

I have High TCH RF loss in Some Cells kindly suggest me wht could be the reasons as i m new in optimization.

Sush D Rock - 4th March 2011  (07:15 GMT)

Guys Please give me an explanation about "How SDCCH Drop is being affected by Location updates and LAC boundaries?"

Thank you in advance.
Please need it urgently.

Yogesh - 10th January 2011  (09:51 GMT)

Can anyone explain in Nokia system (BMA) Bts measurement averaging.
presently its value is set to 1, what happens if i will make it 4 i.e. max

rama narayan - 26th October 2010  (16:08 GMT)

how to sove the calldrop problem after high handover failure

Ahmed - 25th October 2010  (05:20 GMT)

One reason for SD blocking is high paging load due to increased number of location updates in a certain location area.

Revathi - 28th September 2010  (04:38 GMT)

What is Side Lobe Attenutaion in Antennas?. How to calculate it?

Santhakumar S - 19th August 2010  (10:34 GMT)


In GSM what are all the AMR CODEC's are using?can anyone explain about this?

pix - 17th August 2010  (18:49 GMT)

hi santakhumar,

there are some metallic devices that can be used to reduce the side lobes (like deflectors panels on each side of the antenna)... but i never saw that on the field. It probably works only on very specific antenna models.

If you don't want the electrical tilt then the only other solution is to change the antenna. Buy one which has a narrower Horizontal-HPBW.


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