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Indoor Problem

Viewing 9 posts - 1 through 9 (of 9 total)
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  • #49480 Reply
    belal
    Guest

    when i raise the antenna power, a noise took place on the nearest MS to the antenna so the call for this MS will drop down, can any body explain this thing.

    #49481 Reply
    Pix
    Guest

    This situation can happen because it generates some blocking.. i forgot the details, but it has to do with the RXLEV of the UL and DL.
    Nevermind. I think you can solve the problem by activating both DL and UL power control. And if they are already activated, try decrease by few dB’s all the PC thresholds.

    For instance : UL PC : Up = -85dBm, Low = -95dBm
    DL PC : Up = -75dBm, Low = -85dBm

    And don’t forget the MIN POWER for MS (2dBm) and the BTS (min power possible ? depends on your BTS’s brand)

    Hope it helps.. Please let me know how it turns out !

    Regards,

    #49482 Reply
    Vik
    Guest

    Hi, Is it happens to all MSs, or to some particular brands only? I am asking because recently I had similar problem.

    #49483 Reply
    belal
    Guest

    Pix

    the guys at vendor side told me that the reason is from raising the power. they said that in 3G u have only one channel so the power is the parameter to be changed. can u help in that since i am still not convinsed

    #49484 Reply
    pix
    Guest

    you didn’t say it was a 3G indoor cell ! yes, in 3G the power of TX can have a huge impact on call drops and capacity of the cell.

    #49485 Reply
    belal
    Guest

    Pix

    how can this happen

    #49486 Reply
    pix
    Guest

    those are CDMA’s fundamentals, but i can’t go too much into details… I’m more a 2G guy, where there is actual business and useful technologies 🙂

    #49487 Reply
    Yogesh Buttan
    Guest

    Hi
    we have huwaii msc but bsc is of ericsson we were testing an rbs2106 micro bts, if we initiate a call from sony ericsson mobile it was accessible but other models like nokia,siemens were not getting access to that cell site i.e. latched on micro cell but tch is not allocated on the same micro it was with neighbour site.

    #49488 Reply
    paraHO
    Guest

    belal, you said
    “when i raise the antenna power, a noise took place on the nearest MS to the antenna so the call for this MS will drop down, can any body explain this thing.”

    Try checking out SIB7 UL-interference

Viewing 9 posts - 1 through 9 (of 9 total)
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