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congestion SDCCH

Viewing 10 posts - 46 through 55 (of 55 total)
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  • #37729 Reply
    Pramod
    Guest

    what is rach phantom

    #37730 Reply
    aso
    Guest

    dear pramod
    the phantom RACH means that BTS sensing that there is command for channel (RACH request) but in reality this is not the real command from mobile may be it noise that make BSC allocate AGCH many times but with out (Acknowldge message ) which make it the Abis load raise

    #37731 Reply
    umer
    Guest

    what is difference between bts and bsc in term of telecom and how it is works

    #37732 Reply
    pix
    Guest

    it depends on the vendor, but usually it works like this :
    BTS does the measurement preprocessing and radiolink control (radio link failure detection and radio link recovery), and in alcatel, it collects all the radio measurement statistics (from measurement reports and results)

    BSC does everything else (radio resource management, ho preparation and detection, candidate evaluation, etc.)

    #37733 Reply
    aso
    Guest

    dear Pix
    if preproceessing is done by BTS I know it reduce load in Abis interface but in the same time is there any thing that effect is on contrary with abis load or not
    thanks

    #37734 Reply
    pix
    Guest

    no actually, i was wrong yesterday, the channel preprocessing (= averaging windows for the measurements) is done by the BSC… sorry about that.

    The BTS only assemble the measurement reports into measurement results and perform the radiolink supervision. And of coure, all the radio signal processing.

    #37735 Reply
    Kankamba
    Guest

    Hi,
    Could someone help me out on the low CSSR at some sites due to message failure at NSS level.The call setup process would have passed the SD information handling level.how can one counter the message losses and how can one know which message is being lost,is it from the MS or from NSS.Please help

    #37736 Reply
    pix
    Guest

    kankamba,

    you can have a pretty clear picture of the message counts by using qos counters. A QoS counter is counting a message.

    Which system are you using ?

    Regards,

    #37737 Reply
    OMVEER
    Guest

    MAIO & HSN can be unique for a sector with a condition of more a TRX?

    #37738 Reply
    pix
    Guest

    You should set 1 MAIO per TRX. It is certainly done automatically at hopping activation.

    It is recommended to put different HSN for different cells, to avoid running identical sequences by to cells at the same time (the probability is quite low though, isn’t it ?)

    pix

Viewing 10 posts - 46 through 55 (of 55 total)
Reply To: congestion SDCCH
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