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SDCCH Mean Holding Time

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  • #64748 Reply

    Hi all,

    SD MHT for a few cells in our network is high, upto 7 seconds. What should be the optimum value of SDCCH Mean holding time in a network? For cells with a high MHT, what are the possible measures we can take to reduce it?


    #64749 Reply

    Hi Storm,

    In my opinion, the optimum value for SDCCH mean holding time should be around 4s. However, the actual value depends on several factors, including:
    1. Radio network features (eg, assignment to other cell)
    2. Abis Transmission method (satellite sites will have a far higher MHT than sites on microwave).
    3. TCH Congestion

    For those cells with the high MHT, check for faulty TRXs and TCH congestion. If the other KPIs are also bad, then it might be an indication of a faulty hardware.

    Also check to see the kinds of activities using SDCCHs in the cell. If you have many SMS and/or location updates in the cell, the MHT will be high.


    #64750 Reply


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