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GMM states and BSS Transfer modes

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  • #67581 Reply
    Lisa
    Guest

    Hello, dear GSM experts!

    I would be very grateful to you for explanation for one thing i read:

    “MS in Standby mode could be in Packet transfer mode”

    How is it possible?

    Thanks in advance

    BR, Lisa

    #67582 Reply
    pix
    Guest

    hi lisa,

    no it is not possible, only perhaps for a very short time, between the moment the MS is establishing the TBF and the moment it actually gets the TBF. But that’s so short that I doubt anyone should actually worry about this….

    where did you read this ?

    cheers
    pix

    #67583 Reply
    Lisa
    Guest

    3FL12787AAAAWBZZA_02

    Section 1 Module 1 page 25

    #67584 Reply
    Lisa
    Guest

    Hello, Pix!

    My previous post is very short – just the source of that info, because when i was trying to write more that wasn’t applied. this forum is tricky ๐Ÿ™‚

    Thanks a lot for your answer because my mind has been really busy with this thing for some time ๐Ÿ™‚

    The other part – that MS in Ready mode can be in PIM is clear (as i consider :)) – it’s when timer T_READY going. Is it right?

    Thanks again!

    BR,Lisa

    #67585 Reply
    Lisa
    Guest

    oh, i’m so inattentive

    and it’s name
    Evolium base station subsystem gprs and egprs QoS and algorithms b9 b10 evolution

    ๐Ÿ™‚

    #67586 Reply
    pix
    Guest

    lisa,

    you’re quite a spammer ! ๐Ÿ™‚

    i have the training document in fron of me, and it specifies all the GMM states (Ready/StdBy/Idle) but it doesn’t mention the RR states (PIM/PTM).

    So here are the possible combinations:

    READY – PTM : MS has a TBF
    READY – PIM : TBF has been released but T_READY is not yet expired
    STD-BY – PIM : MS is GPRS-ATTACHED but no ongoing TBF
    IDLE – PIM : MS is not GPRS-ATTACH (therefore, no TBF)

    … as far as i know.

    Cheers
    pix

    #67587 Reply
    Lisa
    Guest

    :))
    It’s not me – it’s all about this forum ๐Ÿ™‚ it’s too capricious ๐Ÿ™‚

    and thank you very much – now everything is on its place ๐Ÿ™‚
    that weird thing has been bothering me for some time, now i can sleep ๐Ÿ™‚

    i don’t believe this book any more ๐Ÿ™‚ – the sixth line from the bottom on that precise page?

    sorry for my persistence

    Have a nice day!

    BR, Lisa

    #67588 Reply
    pix
    Guest

    lisa,

    thank you for your persistence. I’m not sure we are having the same editio of this book, I have the edition 3.

    Could you take a snapshot of this slide and send it to me by email, please ? (not the whole file, it’s too big).
    pix_erlang@yahoo.com

    Thanks !
    Pix

    #67589 Reply
    Lisa
    Guest

    :))

    i’ve sent it to you.

    Thanks a lot for your help

    BR, Lisa

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