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Thread: How to improve tch drop?

  1. #1
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    How to improve tch drop?

    Hi,

    Can anyone discuss in brief about the parameters which can be used to improve the tch drop in the network.


    Regards,
    asif sheikh

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  2. #2
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    Are you asking about tch drop on GSM? I don't know any specific parameter to solve that. Try to find the reason why you have TCH drop and try to fix it. Eg. I you have power issue (increase the power), SQI bad (Check frecuency, maybe you have co-cannal or adyacencia, other tecnology or sector have the same frecuency), random access (activated x-range functionality), ..............


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  4. #3
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    We are trying to integrate and check Iur interface from mcRNC to Huawei RNC.




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  6. #4
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    some quick fixes:
    If you have interference (RxQual0-5 < 90%): check/change: BCCH frequency, HSN (in case of RF Hopping), TCH/BCCH traffic allocation, reduce azimuth if cell is overthooting (check TA - Timing advance for this).

    If you have coverage issues, low power issues (RxLev < -100dBm): Increase TRX power, Reduce/Remove BTS attenuation, check tilt

    Other things: A good practice, in this case for Drop, is to get for a significant period of time, a graph with the Drop Rate Causes. From here you can tackle faster the origin of the problem. It can be the case that the main cause is TCH_drop_by_Handover which eventually is the target neighbour's fault, and so there's actually nothing wrong your starting site.


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