- This topic has 30 replies, 1 voice, and was last updated 17 years, 6 months ago by GuruPaksi.
9th August 2003 at 13:53 #36282FabioGuest
How to dimension SDCCH channel in a network with an high load of SMS and Location Update?11th August 2003 at 12:28 #36283JernejGuest
It depend on hove many TRX’s do you have in a cell. If You have two then it is recomended to create 2 TS in a cell, but also you have to have on TRX0 TS0 BCCH whole for him self ( not combined with SDCCH, because of AGCH, PCH and RACH ). Be careful not to take TS if you need it for speech or data.12th August 2003 at 08:54 #36284FabioGuest
Thanks Jernej, I knew this empirical rule but I’m looking for a theoretical rule. I mean: to dimension SDCCH we use Erlang B with B=0.2% but I’m not sure that it’s correct. An other question: how to reduce load drop on SDCCH?12th August 2003 at 09:58 #36285NguyenGuest
I have written a tool for SDCCH dimensioning. The number of SDCCH in a cell will be calculated from these input parameters:
+ Number of TRX.
+ Ratio of Location update to calls
+ Ratio of SMS to calls
+ Blocking probability for SDCCH
+ Blocking probability for TCH
The theoretical rule is complex. If you are interested in this tool, give your email.
Nguyen12th August 2003 at 10:30 #36286JernejGuest
I am interested in your tool too.
I would appreciate if you send me an email regarding it. Thanx12th August 2003 at 10:43 #36287NguyenGuest
OK, I have sent it to you. Plz give it a try and give your opinion.12th August 2003 at 10:46 #36288FabioGuest
I’m interested. My email is
Thanks Nguyen13th August 2003 at 01:45 #36289NguyenGuest
Fabio, plz check yr mail.13th August 2003 at 13:37 #36290Neeraj GuptaGuest
Pl send me the tool also.
My email is :14th August 2003 at 02:42 #36291NguyenGuest
i’ve sent it to you17th August 2003 at 06:24 #36292SudhirGuest
I am a RF engineer working for one of the operator, i would appreciate if you can forward me your SDCCH dimensioning tool.
Thanking you in advance.17th August 2003 at 06:25 #36293SudhirGuest
My email Address is:17th August 2003 at 11:03 #36294mbogoGuest
iam also interested send me too
firstname.lastname@example.org August 2003 at 20:44 #36295sheetanshuGuest
Can you send me the tool too. Thanks18th August 2003 at 09:42 #36296MonikaGuest
Its really interesting.I am also a RF engineer.Pl do fwd me ur TOOL too.
Thanks and regards