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No Service Mode

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  • #50073 Reply
    Sierra
    Guest

    Hi all,

    any body knows what are the causes of “no service mode” on drive test idle-lock ? Is it caused by co channel or adjacent channel interference ?

    Thanks

    BR,
    Sierra

    #50074 Reply
    pix
    Guest

    in my mind, “no service mode” mean :

    1/ the DL RXLEV goes below the RXLEV ACCESS MIN defined in the cell (or more precisely : the C1 becomes negative)

    but maybe (and I strongly insist on the “MAYBE”) it could also mean :

    2/ MS cannot decode the BCCH system information messages (due to strong DL interference on BCCH frequency)
    3/ the cell is barred

    (to be checked with MS’s software expert)

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