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ErlangB – GSM – shared TRX (in & out)

  • This topic has 2 replies, 1 voice, and was last updated 17 years ago by Adetoro ademakinwa.
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  • #34987 Reply
    Shamsir F.


    I am out of idea right now and requesting any open idea

    ok, based on ErlangB formula I could perform planning & optimization on my network

    Let say I have (based on observation record)
    TRX(N) = 2 (14 channels)
    Call drop = 10% (Busy Hour)
    Erlang = 9.47 (Busy Hour)

    now, I want to reduce the drop to 2%, and keep Erlang constant, the result N around 16.

    The problem comes in N, coz the 14 channels are shared for incoming and outgoing(that is why Erlang 9.47 instead of 11.5). Hence, the N value is not really 14,

    Anybody could help me out on how to make “more” practical calculation?

    #34988 Reply
    cao ning

    Hi, if you have answer, shall you share with me at

    #34989 Reply
    Adetoro ademakinwa

    i need information on traffic analysis in GSM

Viewing 3 posts - 1 through 3 (of 3 total)
Reply To: ErlangB – GSM – shared TRX (in & out)
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