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CELL BARRED

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  • #47722 Reply
    EEE
    Guest

    hi
    is there anybody who know the CB (Cell Barred)parameters usage condition (Ericcson)
    “When a cell is barred it is ignored by MSs in idle mode but an active MS can perform handover to it.”

    #47723 Reply
    EEE
    Guest

    I mean which causes occure to use this parameter

    #47724 Reply
    NarChai
    Guest

    Cell Barred = cell not allow MOC,MTC,SMS sent and receive except HO

    In my opinion cell bar usage for reserve cell for HO only.

    #47725 Reply
    EEE
    Guest

    yes you r right NarChai it is clear what you say but I wonder that Which area or condition is suitable to use this parameter another way what is the advantage of this parameter??

    #47726 Reply
    EEE
    Guest

    Hi pix
    May be you can answer my question
    thanks

    #47727 Reply
    boko
    Guest

    You could use it for idle mode layer structuring. for example if you bar the cell you will never have GPRS/EDGE traffic on it. i will not recommend such usage, but I’ve seen such.

    #47728 Reply
    Rajiv Gujral
    Guest

    Hello,

    The CBA bit is a parameter for the network operator to set. Usually all the cells are allowed to be accessed by MS, so the bit is set NO. However, in special cases, the telecom operator may want to assign a certain cells for handover service only, then the bit can be set YES. Suppose we have commerical are in a large city, we usally adopt the micro cellular mode to increase the access rate of the area via the limited frequency resources. We often use the double layer network concept, i.e. to set up a micro cell(its capacity can be smaller) to cover the whole Area and a macro cell providing outer coverage. Here micro cell will provide the capacity and macro is for coverage. Here we can use Cell Barred in the macro cell and enable Rapid HO for the fast moving vehicles in that are.
    Also we can use other parameter CBQ to entirely bar a cell and to set reselection prioirty. Below table may let u understand:

    CBQ CBA CellSelectionPriority CellReselectionState
    NO NO Normal Normal
    NO YES Barred Barred
    YES NO Low Normal
    YES YES Low Normal

    #47729 Reply
    EEE
    Guest

    THANKS Rajiv Gujral for your help

    #47730 Reply
    akefa
    Guest

    Hi Rajni Gujral,

    what about the MS that is close to the macro (the cell barred) in idle mode? this MS will be covered by another far site which has so weak signal that will make coverage problem !

    BR

    #47731 Reply
    Pix
    Guest

    Akefa,

    Rajiv just gave you an example, now it’s up to you to find in which cases you need to BAR a cell.
    In normal situations, you will never need to bar a cell : there are always alternative and less drastic solutions.

    #47732 Reply
    Peace
    Guest

    Does Cell Bar will make TCH_Available = 0 –> affect to Network Available ?
    Tks a lot

Viewing 11 posts - 1 through 11 (of 11 total)
Reply To: CELL BARRED
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