Generic selectors
Exact matches only
Search in title
Search in content

Co BSIC co BCCH

Viewing 15 posts - 1 through 15 (of 15 total)
  • Author
    Posts
  • #57033 Reply
    Naseer
    Guest

    Is there any problem if in a same LAC 2 cells have same BCCH and same BSIC but there is no coverage overlapping between these 2 cells?

    Please some one describe!!!!

    #57034 Reply
    aye
    Guest

    There should be no problem as long as there is NO COMMON NEIGHBOR between those two cells.

    regards.
    aye

    #57035 Reply
    Rex
    Guest

    Hi,
    If another (third) cell between them which has handover with one of them who have same BCCH/BSIC then you’ll face with problems such as call drop or sdcch drop, high sdcch assignment failure etc.. So, I think it’s not good to have same BCCH/BSIC.
    Regards,
    Rex

    #57036 Reply
    Pix
    Guest

    As Aye said, no problem as long as both cells are quite far apart. No common neighbours between them, but more generally, one MS in a cell “x” shall not be able to hear 2 cells having co-bcch/co-bsic.

    #57037 Reply
    krish
    Guest

    hey can anyone tell if i put qlim 45 in eric then what it will give o/p?

    #57038 Reply
    Tanuj
    Guest

    As long they dont have any common neighbour between them it wont hamper anything

    #57039 Reply
    Saulat Abbas
    Guest

    Dear All,
    BCCH and BSIC pair together can cause co BCCH/BSIC clash and Ghost RACH but independently two same BSIC’s do not harm the network.
    Same BCCH causes interference with the same BSIC the system cannot recognize which cell it is.

    @ Naseer: If there is no overlapping of these cells then there will be no issue at all till the time they are not added as the neighbor of each other. If they are added as the neighbor then system will again not recognize to which cell it should handover to because HO is based on BCCH and BSIC pair not on the Cell ID.

    #57040 Reply
    RiMi
    Guest

    as already have answered…. Co-BCCH and Co-BSIC causes problem if they are in neighbour or defined adjacency for the HO.

    #57041 Reply
    JZ
    Guest

    A network is running baseband hopping (BCCH included) with SDCCH allocated on TCH. Consider two nearby cells: BCCH1=TCH2 and BSIC1=BSIC2. Problems with SDCCH timeouts are encountered and they go away when BSIC1 or BSIC2 is changed.

    I don’t have explanation for this. BSIC is broadcast on BCCH and only co-BCCH/co-BSIC reuse should be relevant. Can anyone comment potential co-BCCH/TCH + co-BSIC reuse? Thank you in advance.

    #57042 Reply
    QUANT
    Guest

    if they have common neighbor, even if they are not defined as neighbor. there will be HO failure outgoing from common neighbor. I have faced many SDCCH establishment problem when they have intersection coverage area even if they are no the same LAC.

    #57043 Reply
    pix
    Guest

    hello,

    when incoming HO towards a certain TCH/BSIC of cell “A”, this will also be heard in the neighbour “B” using same BCCH/BSIC couple as the TCH/BSICof “A”.
    The HO ACCESS in UL on TCH/BSIC A is decoded also as a CHANNEL REQUEST on BCCH/BSIC “B”. Cell B is allocating a SDCCH channel for that “ghost”. Since there are four consecutive HO ACCESS for each HO attempt, it means that B is allocating 4 SDCCH channel per HO. B will face big SDCCH congestion.

    Best regards,
    pix

    #57044 Reply
    suresh
    Guest

    Hi pix,

    can u explain again if u don’t mind if i have two bsc and in one bsc adhoc per sector and another bsc 1*1 fre hopping .

    so problem is in bordering cell of that bscswhich bcch i have used its use as tch in another bscs bordering cell si will it affect my ho sucess because here i have ho failure problem in bsc-bsc handover?huawei system

    #57045 Reply
    agz
    Guest

    Pix,
    cn u xplain lil more abt wt JZ has raised in his query///
    Hw can BTS B misinterpret BTS A’s HO access msg as a channel request even if it is having same BSIC(still BCCH is different rite???)

    #57046 Reply
    bjushka
    Guest

    hi,

    I have a question.
    Is there a logic connection between BCC (base station color code) and TSC (training sequence code), in case when a cell has neigbors with same BCCH and same BCC (but different NCC)?
    What’s about call setup, if we have cells, in the network, that have same BCCH and same BCC (but different NCC)?

    thanks
    bjushka

    #57047 Reply
    Jangia
    Guest

    hi suresh , pitaji ka patlung ek bilan chota kar do

Viewing 15 posts - 1 through 15 (of 15 total)
Reply To: Co BSIC co BCCH
Your information:




<a href="" title="" rel="" target=""> <blockquote cite=""> <code> <pre class=""> <em> <strong> <del datetime="" cite=""> <ins datetime="" cite=""> <ul> <ol start=""> <li> <img src="" border="" alt="" height="" width="">