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Double BCCH in TEMS

Viewing 12 posts - 1 through 12 (of 12 total)
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  • #60710 Reply
    Dery
    Guest

    Hi All,

    I have been noticing something strange when I am doing a drivetest with TEMS investigation.

    Sometimes I notice the same cell appearing twice on the “Serving + Neigours” Window, with the same BCCH. I’m tempted to think this is as a result of multipath effects, but I need clarification. Can you help me out?

    Regards,

    Dery

    #60711 Reply
    SB
    Guest

    Hi Dery

    are you using any cell sites definition files which you may have imported to show cell sites name and otherinfo.any duplicate entry there:we had similar issue but that was totally data entry issue and displyed the info.twice.are you using TEMS 6.0 or 9.0 ?

    Thanks

    #60712 Reply
    JB
    Guest

    Hi SB ,

    We are not using any cell file still we are getting the double BCCH and BSIC.

    #60713 Reply
    TheDarkKnight
    Guest

    Hey Dery,

    One of the scenarios in which a cell appears twice in the Serving + Neighbors window in TEMS is when Common BCCH config is used. If, for example, your BCCH is defined on 900 band only, and you are camped on the 1800 band, the cell will be displayed twice in the Serv+Nbrs window.

    #60714 Reply
    Eric4u
    Guest

    I think it has to do with your active BA list. If the serving cell’s BA list contains its own BCCH then it will measure its own frequency as a neighbour frequency. Check your active BA lists and see.

    #60715 Reply
    pawandeep
    Guest

    it is related to Double BA list .
    if it is activated then it will appear twice otherwise it will be normal.
    Check your Double BA list activation.

    #60716 Reply
    agz
    Guest

    I think this due to power control enabled in ur cell..one shows ur bcch s/g level
    (no pc) and other level wn u r on power control….

    #60717 Reply
    Lex
    Guest

    hi all the double bcch and bsic is due to the dual band ie if ur on 1800 then it sends mr’s of 900 and vice versa.

    #60718 Reply
    guru
    Guest

    I think its due to dual band cell with single bcch. we also observed the same in TEMS

    #60719 Reply
    Mania,
    Guest

    Hi Dery,
    Actually the answer is a mix of all the three.
    When you are on the inner-zone of a concentric cell. them some opperators allow you the option to include your own BCCH in the BA list thereby for inter-cell HO the outer-GSM-BCCH is compared with neighbouring BCCHs instead of the inner (DCS) level which is lower than GSM due to propogation loss difference / TX power difference.
    The other option being to have a hysterisis defined va parameter to assist you in intercell HOs from inner-Zone. so its good. Pls tell us of your vendor so we can tell you what they are using / which parameter to varify

    #60720 Reply
    khaled
    Guest

    why i can see in serving+niubour window the same bcch twice for same cell name ? what does it refer to

    #60721 Reply
    sirasibe
    Guest

    you use power control your cell. I tired it

Viewing 12 posts - 1 through 12 (of 12 total)
Reply To: Double BCCH in TEMS
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