- This topic has 8 replies, 1 voice, and was last updated 10 years ago by SHELDON.
1st April 2011 at 13:29 #66102NJGuest
Why SDCCH channels in 1800 band on cell MBC(900-1800) doesn’t take any traffic? CHGR=0 900, CHGR=1 1800.
NJ4th April 2011 at 08:58 #66103SHELDONGuest
Does the problem occur on all your cells or only a few?
Rgds5th April 2011 at 07:44 #66104NJGuest
It happens for all sites MBC,
My Command is:
BR.6th April 2011 at 10:20 #66105SHELDONGuest
If it’s happening on all MBC sites, then it’s definitely a problem with your MBC parameters. Which band is UL and which is OL?
Check and make sure that BCCD is set to yes on the 1800 channel group (use RLCHP).
Also check your channel allocation profile (CHAP) to make sure you have not excluded any of the subcells from Immediate assignment. (CHAP 5,11 or 12).
SHELDON6th April 2011 at 12:03 #66106NJGuest
I ve changed to YES the BCCD on CHGR1 (OL,1800).
The CHAP for all MBC sites =10, Could you tell me the right value?
Thanks and regards11th April 2011 at 06:38 #66107NJGuest
Does anyone know which CHAP to use on E// MBC cells?
NJ14th April 2011 at 10:08 #66108SHELDONGuest
Sorry for my delayed response.
Apparently, immediate assignment can only be done in the BCCH frequency band in a multiband cell (according to ericsson).
This probably accounts for your problem.
Contact ericsson support and see if they can help you out.
SHELDON11th May 2011 at 09:10 #66109ManiaGuest
@ SHELDON: Normally this is the case with other vendors as concentric cells only SDCCH is defined on BCCH band as that defines the coverage? however in Erricson there is a stat as well as allowance for SDCCH_Congestin (UL/OL) what does this signify?11th May 2011 at 12:45 #66110SHELDONGuest
Yes, it makes sense to put your SDCCH on the BCCH band. However, I find it difficult to understand why there should be a restriction.
I think the stats you mentioned only apply in the cases where you have ONLY UL/OL subcells, but not a multiband structure(remember UL/OL cells does not necessarily mean multiband cells).