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gsm neighbours

Viewing 7 posts - 1 through 7 (of 7 total)
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  • #64999 Reply
    woth5
    Guest

    Hi all!

    How much neighbours in a cell is enough?

    Obviously, when there is more neighbours defined, then the mobile phone will follow more frequencies. I’m interested in how will this affect to battery. Will it drain more quickly? If so, the how quickly – is 15 neighbours triple ad bad for draining battery that 5 neighbour for instance?

    Thanks

    #65000 Reply
    Tanuj
    Guest

    No, the MS uses only the 6 best neighbours for cell reselection, so having more neighbours defined in a cell won’t drain the battery.

    and the question is wrong “How much neighbours in a cell is enough?” it depends on the no. adjacent sites where we want to have handovers

    #65001 Reply
    pix
    Guest

    tanuj / woth5,

    if you define a lot of neighbours, the MS have to scan ALL of them, in order to detect the 6 best neighbours.
    But it doesn’t drain the battery : the “periodicity” of the measurements is the same, but each frequency is measured less often.
    So the real drawback is that the neighbours are not updated as quickly as before (when there is less neighbours). But really, it’s not such a big issue at all !

    Main impact is on the frequency planning : neighbours should not use co-channel or adjacent channels. When you define two cells as neighbours, you are putting constraints on the possible frequencies you could use.

    regards
    pix

    #65002 Reply
    Tanuj
    Guest

    Thanks pix for the clear reply

    #65003 Reply
    NJ
    Guest

    Hi all,
    On NSN, max is 32 NBRs/cell.

    regards,
    NJ

    #65004 Reply
    Tanuj
    Guest

    32 neighbours is max for Motorola, ZTE and ericsson too

    #65005 Reply
    woth5
    Guest

    Thanks for very clear answer pix. It is helpful

Viewing 7 posts - 1 through 7 (of 7 total)
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