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Paging Success Rate Formula for BSS

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  • #66853 Reply

    Hi Experts,

    1.What is the formula for Paging Success Rate (PSR) at BSS level?
    2.How to compare this PSR on BSS with PSR on Core neiwork?
    3.Why we get low PSR on core during midnight? Any reasons for this or step to analysis?

    #66854 Reply


    1. The formular may be different, according as how and what do you want to assess
    – If you want to assess service quality (based on user perception):
    EndUserPSR = Nbr_of_paging_response/Nbr_of_1st_paging_request

    – If you want to assess network quality, you have to include number of paging retries:
    PSR = Nbr_of_paging_response/(Nbr_of_1st_paging_request + Nbr_of_paging_retry)

    2. Because paging request and paging response is initiated and received at core network side, so there is no PSR at BSS side.

    3. You can follow these steps to check:

    – Check T3212 in BSS, and set Implicit Detach Timer in MSC to 6*T3212 + 1
    – T3113 (in MSC, not in BSS) must be set to T3101 + (3-5)seconds
    – T3101 (in BSS) set to 3-5 seconds

    However I’m not sure why PSR is low during midnight.

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Reply To: Paging Success Rate Formula for BSS
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