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rx_lev full and sub

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  • #50747 Reply

    what are the cause why we encountered large difference between rx level full and rx level sub? for example rx_lev full is -95 and rx_lev sub is -55.

    #50748 Reply

    It occurs when there is no voice transmitted in the direction of the measurement and DTX is activated in this direction as well.
    For instance : DL RXLEV FULL = -95 and DL RXLEV SUB = -55, means that very little voice is transmitted in the downlink direction and DTX DL is enabled.
    FULL : measurement is done on all TCH, even if nothing is carried on it.
    SUB : measurement is done on SACCH frames (it always contains data)

    #50749 Reply

    thanx pix for your reply.

    just a follow-up question, what possible action to do to solve this situation, is there any parameter we should change to to solve this problem. thanx

    #50750 Reply

    it is a normal situation. what do you want to solve ? adapt your work and your methods accordingly to your network settings.

    don’t try to change the network to suit your knowledge 🙂

    RULE : During drive tests using DL DTX, always look at the RXLEV-SUB.

    #50751 Reply

    If you want to change that behabiour you have to disable DTX on your cell, but that could lead to decrease in the performance of that cell.

    #50752 Reply

    in the tems make the rxlev full disapear 🙂

Viewing 6 posts - 1 through 6 (of 6 total)
Reply To: rx_lev full and sub
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