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Layer Ho

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  • #64457 Reply
    Faares
    Guest

    Dear all , i want to know as we know the layer HO is important 4 dual band network,
    the question is , can Layer HO performed between cells of different band ,same layer and different priority .

    thank you in advance

    #64458 Reply
    Bijoy
    Guest

    Hi Faares
    When bands are assigned layers, the layers have to belong to bands in an ascending order,i.e, each layer can belong to only one band.

    Br\\
    Bijoy

    #64459 Reply
    Faares
    Guest

    HI Bijoy
    thanks for the reply , what i want to know is, in our network the 900 band cells are in layer 3 priority 2 and 1800 band cells in layer 3 priority 1
    , so under this condition is it possible to have a Layer handover between 900 to 1800 cells (when the layer HO threshold + the inter layer HO hysteresis equal or less then the neighbor cell Rxleve.)

    Thanks

    #64460 Reply
    Eagle
    Guest

    Hi Faares.
    Layer HO depends only from the layer. dosent mater what priority have the TRX of the different layers.

    #64461 Reply
    Faarer
    Guest

    Eagle
    so in my case it is two different bands in same layer but diffse priority (as i mentioned before.) do you mean there will be no hand overs at this case.

    #64462 Reply
    Eagle
    Guest

    Yes there will not be layer HO but other HO like BQ, Interference… can be performed

    #64463 Reply
    Faares
    Guest

    thanks for your information ,

    #64464 Reply
    Eagle
    Guest

    What will happen in the following example(huawei equip.) if we increase hysteresis?

    Actual Inter-layer HO Threshold of a serving cell = configured Inter-layer HO Threshold – Inter-layer HO Hysteresis

    Actual Inter-layer HO Threshold of an adjacent cell = configured Inter-layer HO Threshold + Inter-layer HO Hysteresis of an adjacent cell – 64.

    Exmp:Hysteresis = 3
    25 – 3 = 22(-88dB) for serving cell
    25 + 67 – 64 = 28(-82dB) for the adjacent cell

    Exmp:Hysteresis = 5
    25 – 5 = 20(-90dBm) for serving cell
    25 + 67 – 64 = 28(-82dB) for the adjacent cell

    #64465 Reply
    goner700
    Guest

    Hi all,
    I can’t seem to grasp the concept of Inter-layer HO Threshold. Is it really to control HO of outdoor to indoor cells? Kindly asking for your help. Thank you very much in advance.

    #64466 Reply
    LEMAURE
    Guest

    Hello goner700!
    Layer HO helps to keep or prioritize traffic on a given layer. This may be in particular the case with outdoor and indoor environment if there are not in the same layer.

    #64467 Reply
    goner700
    Guest

    Thanks for your response LEMAURE.
    Have you used Layer HO parameter before? If so, on what cases?
    Thank you very much.

    #64468 Reply
    mathias
    Guest

    Hi expects, kindly help me with the understanding of how Inter layer HO threshold works.

    Question 1: does Inter layer HO threshold work with handover from only higher to lower layer. i.e (layer 3 to layer 2? )or it works with handover from any direction?

    Question 2:will Inter layer HO threshold work with different layers but the same priorities? or it only works when the layers are different and the priorities are also different?

    Please kindly help me becos am confused.

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