- This topic has 31 replies, 1 voice, and was last updated 10 years, 11 months ago by Mani.
9th June 2010 at 16:22 #41984jackGuest
please send me this resource (“how to build a Mobile Station, Layer 1” and the DVD’s of “Biography of a GSM burst, Complete Seasons 1 to 10”.)
i really need this resources.
please help me.
firstname.lastname@example.org June 2010 at 17:10 #41985PixGuest
I can see you need resources.
Do not panic : it was just a joke.
And as usual, a terribly bad one.9th June 2010 at 17:29 #41986jackGuest
please dont kidding with me.
my job is really in dangerous.
i need to update my information about GSM.
you can help me,why dont do this???10th June 2010 at 01:51 #41987PixGuest
If you have any question, I’d be happy to help you.
I don’t have any document that I can share though.
All books about GSM are the same. You read one and that’s enough… What is more important is
1. to get technical docs from the vendors
2. practise on live network.
pix10th June 2010 at 03:51 #41988jackGuest
i understand you.
i have one question.
i my network in every cell i have a lot of SDDCH release due to this abnormal release:
SDCCH failure due to an Abis interface failure in call set-up.
the interesting thing is:
for this links i have call duration varies b/w 1 to 10s.
of course a lot of them0s.
of course a lot of them is 0s.
how i can decrease it??10th June 2010 at 04:31 #41989ManiaGuest
Like the “On which burst is broadcasted the BSIC” part to put things in prespective.
So I think we can safely close this thread as a lot has been said on TSC.
By the way who, how and when closes the threads.
Just saw one in red closed the other day.10th June 2010 at 06:27 #41990PixGuest
Mania : i don’t know about this. I think it is the webmaster.
Jack : abis problem means that the link that joins the BSC and this BTS is bad. Check the transmission equipment (microwave ?), if there are alarms or poor BER, etc.
pix10th June 2010 at 09:28 #41991PaulGuest
Thanks for your explanation, it’s helpful.
Br,16th June 2011 at 18:07 #41992South africaGuest
Wonder if you can help with some suggestion .
I have lost some EXT Hand Over attempts and since then the DCR has deterioted more than 1 % on the BSC level.
No Changes on the database was done at any of these cells that has just stoped EXT Hand Overs.18th June 2011 at 12:54 #41993PixGuest
Hello south africa.
are you working at bss side, or at nss side ?
this kind of problems is exclusively due to nss misconfigurations. And if they tell you they didn’t change anything, then you can be certain they DID.
In some rare cases, it could be due to faults in the BSS database (which is “corrupted”). You can try to do a database cleanup, or delete/recreate the cell.
But if it is still not working, then quit trying and focus on NSS !!
pix18th June 2011 at 18:46 #41994South africaGuest
Thanks Pix,I.m working on the BSS Side .I will try to do just that.
Just one more consern about this Issue of TSC actualy i also want to re-plan my TSC.
Will it be a good idea to make co-located cells the different TSC?
Thanks in advance.19th June 2011 at 19:49 #41995pixGuest
TSC should be equal to BSIC.
so plan your BSIC, and then just apply this rule…
BSIC can be the same, as long as the BCCH frequency is different. It doesn’t matter if you’re colocated or not.
pix6th August 2011 at 17:59 #41996makarandGuest
What will be the effect when surrounding cells having same BCC ?7th August 2011 at 16:46 #41997pixGuest
no effect, except if they are using one or many identical frequencies (be it BCCH or non-BCCH)30th April 2012 at 10:52 #41998VickyGuest
Working For ZTE system. Is it true to use the TSC=BCC on each TRX or it may be TRX Wise, i.e.
1st TRX TSC= BCC;
2nd TRX TSC= BCC+1;
3rd TRX TSC= BCC+2;
4th TRX TSC= BCC+3;
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