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Thread: How to detect sleepy cell (2G)

  1. #1
    Member Reputation: 259
    Join Date
    2009-12-15
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    Default How to detect sleepy cell (2G)

    We have possible sleepy cell situation -> tranismitter stop transmitting without any alarm/notification. 2G technology.

    We can monitor counters associated with radio traffic and set trigger for no events for certain period of time.

    Question is how to detect idle mobiles with counters - are idle mobiles they generating any signalling traffic? Beside periodic location update ...


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  3. #2
    Senior Member Reputation: 361
    Join Date
    2010-12-30
    Posts
    313


    Default Re: How to detect sleepy cell (2G)

    Hello,

    Try to set control traffic volume threshold. Check any regular cell and you will see control traffic volume in an hour. use that as a threshold and number of connected devices per hour.

    dekili

  4. #3
    Member Reputation: 253
    Join Date
    2009-12-31
    Posts
    535


    Default Re: How to detect sleepy cell (2G)

    hi,

    Try to use Utilization KPIs and attempts and failures, many times they have zero SDDCH traffic, but with minimal TCH traffic due to Handover but not being camped when accessing it or Call Setup usually is Zero.

    br//

    Quote Originally Posted by borelij View Post
    We have possible sleepy cell situation -> tranismitter stop transmitting without any alarm/notification. 2G technology.

    We can monitor counters associated with radio traffic and set trigger for no events for certain period of time.

    Question is how to detect idle mobiles with counters - are idle mobiles they generating any signalling traffic? Beside periodic location update ...


    Thanks

  5. #4
    Junior Member Reputation: 12
    Join Date
    2011-05-17
    Posts
    20


    Default Re: How to detect sleepy cell (2G)

    Hi, you may try check SDCCH Drop KPI. Usually, you may found high counts of drops due to other reasons.
    You can also compare the TCH and SDCCH Traffic trend.
    Possible reason is that the BCCH TRX is faulty, if you have a cell with more than one transceiver, I suggest you block the first Transceiver so the BCCH channel will move to the second Transceiver then monitor the KPIs I mentioned. Hope this helps.

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