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SDCCH subchannels

Viewing 13 posts - 1 through 13 (of 13 total)
  • Author
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  • #59610 Reply
    Rex
    Guest

    Hi,
    in one cell there are declared 2 SDCCHs or 16 subchannels. Sometimes happens that available subchannels are 15. Why and what causes that?

    #59611 Reply
    Bijoy
    Guest

    REX
    Because in 1 SDCCH ,we define SDCCB,so the configuration stands 7SDCCH subchannels+ 1SDCCB+8SDCCH subchannels

    #59612 Reply
    Rex
    Guest

    Thanks Bijoy,
    Can you please explain what is SDCCB? That’s happening rarely, usualy available channels are 16.
    Regards,
    Rex

    #59613 Reply
    Rex
    Guest

    Bijoy,
    if it’s related to combined BCCH then we don’t using that (cbch).

    #59614 Reply
    Bijoy
    Guest

    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 LMT

    #59615 Reply
    Rex
    Guest

    We are using Alcatel.

    #59616 Reply
    pridey
    Guest

    sdccb=sdcch/4 + cbch

    #59617 Reply
    Bijoy
    Guest

    Hi pridey
    It cant be.
    It should be SDCCH/7+CBCH

    #59618 Reply
    Pix
    Guest

    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.

    Cheers,
    Pix

    #59619 Reply
    Rex
    Guest

    Thanks Pix,
    I checked and there is no SDH configured in that cell. Is it possible cell broadcast go through ‘usual’ SDC?
    Regards,
    Rex

    #59620 Reply
    Pix
    Guest

    Rex,

    No.

    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…

    #59621 Reply
    Rex
    Guest

    Thanks

    #59622 Reply
    Mudassir
    Guest

    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?

Viewing 13 posts - 1 through 13 (of 13 total)
Reply To: SDCCH subchannels
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