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GSM UMTS

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  • #65650 Reply
    Learner
    Guest

    Hi Experts,

    What happens with the network when reselections from 2G to 3G Occur and also other way round?

    location/routing area updates? any other signalling involved?

    How one can analyse the ping pong in reselections through Statistics?

    thanks…

    #65651 Reply
    pix
    Guest

    hi,

    1/ signalling : normally, only RA or LA update. If the core network is independant between 2G and 3G (can it happen??), I would also expect ATTACH/DETACH and PDP CONTEXT ACT.

    2/ Ping-pongs with reselection… well, you can count how many LAU and RAU occurs. What you can do is play around with the parameters, in order to block the 2G 3G reselection, and then reactivate it. You should see the difference.

    Regards
    pix

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