- This topic has 30 replies, 1 voice, and was last updated 17 years, 6 months ago by
GuruPaksi.
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AuthorPosts
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Fabio
GuestHow to dimension SDCCH channel in a network with an high load of SMS and Location Update?
Jernej
GuestIt 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.
Fabio
GuestThanks 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?
Nguyen
GuestI 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
+ etc.The theoretical rule is complex. If you are interested in this tool, give your email.
Nguyen
Jernej
GuestHy Nguyen
I am interested in your tool too.
I would appreciate if you send me an email regarding it. ThanxNguyen
GuestOK, I have sent it to you. Plz give it a try and give your opinion.
Fabio
GuestNguyen
GuestFabio, plz check yr mail.
Neeraj Gupta
GuestNguyen
Guesthi
i’ve sent it to youSudhir
GuestHi Nguyen,
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.
Sudhir
Guestmbogo
Guestiam also interested send me too
fmbogo@celtel.co.tzsheetanshu
GuestHi Nguyen,
Can you send me the tool too. ThanksMonika
GuestHi Nguyen,
Its really interesting.I am also a RF engineer.Pl do fwd me ur TOOL too.
mail id
monika_mkp@rediffmail.com
Thanks and regards -
AuthorPosts