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UL/DL TBF

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  • #57549 Reply
    krish
    Guest

    Hi,

    ok than plz help to sort out some doubts on edge,gprs….

    for tbf success ratio and dl multislot assignment what other parameter tunnig we can do?

    actuaaly i have one basic confusion …if i have two pdch timeslot then at a time within that two timeslot max. how many user can share?

    according to my knowledge 8 users can share one pdch..

    is it right then whts the meaning that one ms require 4 timeslot? is its like this then atleast i should have 4 pdch timeslot?

    and by tunnig t200 the cells which have sd completion near to below threshold(kpi) are improved

    #57550 Reply
    Pan
    Guest

    Hi, krish!
    In one PDCH you can accomodate up to 7 MS in UL, up to 16 MS in DL (16 MS in total).
    All resources to ms are allocated by network (depending on resources availability (and acessibility) and subscriber’s QoS).
    If after T200 tuning, your network performance will increase hence your T200 had wrong settings initially.

    #57551 Reply
    krish
    Guest

    Hi,

    ok but still one doubt can u telll then what does mean by whts the meaning that one ms require 4 timeslot? is its like this then atleast i should have 4 pdch timeslot

    #57552 Reply
    Pan
    Guest

    Dear, krish! an MS can’t require 4 TS, it can only require peak and garanteed throughput. And only network can assign 1or2or3or4 TSs to MS depending on negotiated subscriber’s QoS and resources availability.

    #57553 Reply
    krish
    Guest

    Hi pan,

    then why are differntiate the that class 30-33 support 6 multislot class 1 support 4 that i want to clear buddy?

    andu said that an MS can’t require 4 TS, it can only require peak and garanteed throughput. And only network can assign 1or2or3or4 TSs to MS depending on negotiated subscriber’s QoS and resources availability. but if i have two edge timelsot(2 pdch) and there are 8 users and i have same 2 pdch and 4 users then how they will get timeslot?

    in 1 pdch if there will be max 8 users then if i have 2 pdch and all users are 4 timeslot capable then what will be the distribution?

    #57554 Reply
    pix
    Guest

    it depends on how the vendor decide to perform the resource allocation. It is not defined (afaik) in the 3GPP.

    So for example:
    4 MS onto 2 PDCH.
    Why only 2 PDCH ? Let’s assume it is because the other timeslots are already busy with TCH.

    Possible implementation:
    each MS has 2 PDCH only (even though they have MS capability to support 4 PDCHs), because they can’t have more : the BSS will allocate only 2PDCH to each of them.

    Now, of course, those 2 PDCH are the same for each MS. So each PDCH provides a possible link for 4 different MS. There are 4 MS multiplexed onto each PDCH.

    Since not all MS are receiving data at the same time, one MS could have 100% max throughput over 2 PDCH during few seconds…

    #57555 Reply
    krish
    Guest

    Hi,

    u mentioned that 4 ms can share
    2 pdch even they (support 4 pdch asp er mobile class) but tell me if in 1 pdch max. 8 users can share then within 2 pdch all 4 ms users will get 4 timeslot at a same time? is it right?

    #57556 Reply
    Pix
    Guest

    1 PDCH = 1 timeslot

    if 4 users share one PDCH, it means each of them is having one quarter of the timeslot (in average)

    #57557 Reply
    krish
    Guest

    Hi,

    buddy still not getting because whats then meaning of 4 multislot supporte mobile if 1 pdch share by 4 users?

    #57558 Reply
    pix
    Guest

    one MS can get 4 consecutive timeslots (CAN ! not MUST !)

    … and one timeslot can multiplex several users.

    I don’t see where is the problem.
    I’d like to draw it to you, but I can’t.

    #57559 Reply
    Ds
    Guest

    Hi Pan,

    as per my knowledge, 1 PDCH can have max 7 users in UL & 9 users in DL i.e. 16 users in total 1 PDCH can have.
    please correct if i m wrong.

Viewing 11 posts - 16 through 26 (of 26 total)
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