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Thread: low handover rate from GSM900 to GSM1800 problem

  1. #1
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    Default low handover rate from GSM900 to GSM1800 problem

    Hi everybody,

    could someone tell me what are the main causes of low handover rate from GSM900 to GSM1800.

    What are the main parameters that i should adjust to optimise the dual-band network ?


    thanks

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  3. #2
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    Default Re: low handover rate from GSM900 to GSM1800 problem

    Quote Originally Posted by wireless_houss View Post
    Hi everybody,

    could someone tell me what are the main causes of low handover rate from GSM900 to GSM1800.

    What are the main parameters that i should adjust to optimise the dual-band network ?


    thanks
    What is layer strategy on your network?

    Multi band or dual band?

  4. #3
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    Default Re: low handover rate from GSM900 to GSM1800 problem

    tell us what HO most trigger due to? then i will be explain more

  5. #4
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    Default Re: low handover rate from GSM900 to GSM1800 problem

    Quote Originally Posted by electron View Post
    What is layer strategy on your network?

    Multi band or dual band?
    in fact their layer strategy is to give layer 2 to 1800 site and layer 3 to 900 site

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    Default Re: low handover rate from GSM900 to GSM1800 problem

    Quote Originally Posted by Ummi View Post
    tell us what HO most trigger due to? then i will be explain more
    i didn't understand could you explain more please

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    Default Re: low handover rate from GSM900 to GSM1800 problem

    Quote Originally Posted by wireless_houss View Post
    in fact their layer strategy is to give layer 2 to 1800 site and layer 3 to 900 site
    Check BANDTHR if both are in same band layer some delay in HO or latch on 900 or 1800 will be side affect in this case you can have a trial for example LAYERTHR does not work properly whenever you are changing it

  8. #7
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    Default Re: low handover rate from GSM900 to GSM1800 problem

    Quote Originally Posted by electron View Post
    Check BANDTHR if both are in same band layer some delay in HO or latch on 900 or 1800 will be side affect in this case you can have a trial for example LAYERTHR does not work properly whenever you are changing it
    actually i work on huawei system, i haven't found BANDTHR and LAYERTHR in huawei system. can you explain according to huawei system


    and i found something wirried they set two sites in different layer and different priorities..

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    Default Re: low handover rate from GSM900 to GSM1800 problem

    Quote Originally Posted by wireless_houss View Post
    actually i work on huawei system, i haven't found BANDTHR and LAYERTHR in huawei system. can you explain according to huawei system


    and i found something wirried they set two sites in different layer and different priorities..
    You need to check Hierarchical network structure i feature in your system. In E/// it is famous as HCS in dual band strategy

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    Default Re: low handover rate from GSM900 to GSM1800 problem

    Quote Originally Posted by wireless_houss View Post
    actually i work on huawei system, i haven't found BANDTHR and LAYERTHR in huawei system. can you explain according to huawei system


    and i found something wirried they set two sites in different layer and different priorities..
    Hi
    In Huawei there is parameter INTELEVHOHYST (Adjacent cell inter-layer HO Hysteresis).
    You should first check where the most of HO command failure is occuring. This can be done by simply querying relative counters through M2000.

    Thanks

  11. #10
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    Default Re: low handover rate from GSM900 to GSM1800 problem

    Quote Originally Posted by wireless_houss View Post
    Hi everybody,

    could someone tell me what are the main causes of low handover rate from GSM900 to GSM1800.

    What are the main parameters that i should adjust to optimise the dual-band network ?


    thanks
    hi
    the most handover failuer comes from the outgoing handover in 900Mhz site (handover from 900Mhz site to 1800Mhz site)

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