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Thread: WCDMA different operator impact

  1. #1
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    Default WCDMA different operator impact

    Dear Experts,

    Recently we have noticed that one of our operator 3G cells was impacted (as a noise) by newly operated sites from different operator, can somebody let me know whether this issue valid or not? and if yes how please?

    BR,

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  3. #2
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    2011-08-21
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    1 out of 1 members found this post helpful.

    Default Re: WCDMA different operator impact

    Hi.
    Yes it's posible.
    This is my view:
    RBS-RBS Interference (no co-location) (differente Operators)
    • Spurious emission: unwanted emission from the other operator (probabbly due to a fault in transmition equipment)
    • Blocking issue in your operator: fault in receivers capability to perform the blocking of a strong interference from the other operator
    • Isolation between systems: this could be possible in case the other operator is using, for instance, an originary GSM frequency band to deploy WCDMA or LTE technology and they don't comply with the required Guard Band. In this example both operators are using contiguous channels


    Hope it helps

  4. #3
    Senior Member Reputation: 416
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    1 out of 1 members found this post helpful.

    Default Re: WCDMA different operator impact

    Check the spectrum analyzer on the problem sites for the bandwidth in the Uplink base stations of your network. You should see the source of the interference.
    Possible causes of interference:
    1. Lack of guard intervals between channels allocated to operators (UMTS - GSM). (with channel interference)
    2. Use of non-standard UMTS channels by operators.
    3. The use of incompatible equipment by frequency (example: UMTS900 and UMTS 850 incompatible use in the same network).
    In all cases there will be a high level of RTWP.
    Slava

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