- This topic has 12 replies, 1 voice, and was last updated 10 years, 7 months ago by Mudassir.
12th November 2009 at 13:58 #59610RexGuest
in one cell there are declared 2 SDCCHs or 16 subchannels. Sometimes happens that available subchannels are 15. Why and what causes that?13th November 2009 at 04:43 #59611BijoyGuest
Because in 1 SDCCH ,we define SDCCB,so the configuration stands 7SDCCH subchannels+ 1SDCCB+8SDCCH subchannels13th November 2009 at 08:42 #59612RexGuest
Can you please explain what is SDCCB? That’s happening rarely, usualy available channels are 16.
Rex13th November 2009 at 08:58 #59613RexGuest
if it’s related to combined BCCH then we don’t using that (cbch).13th November 2009 at 11:13 #59614BijoyGuest
CBCH can be used both in combined as well as non-combined mode.If you are using
1.Nokia Sytem,check with the command ZERO:BTS=BTS ID;
2.Ericsson system,check with the command RLCRP:Cell=cellname,detail;
3.Huawei System,check in LMT13th November 2009 at 11:24 #59615RexGuest
We are using Alcatel.13th November 2009 at 11:34 #59616prideyGuest
sdccb=sdcch/4 + cbch13th November 2009 at 13:26 #59617BijoyGuest
It cant be.
It should be SDCCH/7+CBCH13th November 2009 at 21:09 #59618PixGuest
OOooops, some inter-vendor vocabulary issues…
Rex, in Alcatel, the “SDH” is a timeslot configured with 7 SDCCH subchannels + 1 SMS-CB (Cell Braodcast) subchannel. Check the cell timeslot configuration in the RNUSM “Cell Edit”.
Bijoy, the SDCCB is probably a cell braodcast subchannel, yeah ?
Rex (again), the cell broadcast is used to broadcast one SMS message to all the MS within one cell. It is usually broadcasting commercial advertisements.
Pix13th November 2009 at 22:55 #59619RexGuest
I checked and there is no SDH configured in that cell. Is it possible cell broadcast go through ‘usual’ SDC?
Rex13th November 2009 at 23:24 #59620PixGuest
Going back to your initial question… you were talking about 15 AVAILABLE sdcch subchannels during one hour ?
It means the SDCCH are not availble during 1/16th of an hour (or approx.). The average over one hour is 15.
That’s all…14th November 2009 at 21:47 #59621RexGuest
Thanks8th March 2010 at 14:57 #59622MudassirGuest
Can any body tell me How Rx Qual can be converted in C/I in Huawei III Power control.
Also the Default Upper and Lower Quality Thrsh in Huawei III PC are same . HOw?