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Thread: UL Channel Element utilization exceeding 100%

  1. #1
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    Default UL Channel Element utilization exceeding 100%

    Hi everybody;

    I have a strange case, I'm reporting CE utilization over the whole network, I faced one NodeB having UL CE utilization exceeding 100% every day at BH.
    The situation is like below.
    • The DUW version is 30.
    • The NodeB hase 2 DUWs having 512 UL CE each.
    • Software license is 1024.
    • CeExtForEul feature is active, means CE UL HW Activation code is 1536.
    • the nodeB has two CE pools.
    • the BH Used CE is exceeding the maximum available CE which is 1536.


    Please could someone help me on this.

    B.R

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  3. #2
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    Default Re: UL Channel Element utilization exceeding 100%

    Quote Originally Posted by Ghost78 View Post
    Hi everybody;

    I have a strange case, I'm reporting CE utilization over the whole network, I faced one NodeB having UL CE utilization exceeding 100% every day at BH.
    The situation is like below.
    • The DUW version is 30.
    • The NodeB hase 2 DUWs having 512 UL CE each.
    • Software license is 1024.
    • CeExtForEul feature is active, means CE UL HW Activation code is 1536.
    • the nodeB has two CE pools.
    • the BH Used CE is exceeding the maximum available CE which is 1536.


    Please could someone help me on this.

    B.R
    Hi,

    you are probably calculating dynamic UL CE utilization which can be higher than 100%.


    Cheers

  4. #3
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    Default Re: UL Channel Element utilization exceeding 100%

    Hi electron;

    thanks for your answer, but please could you explain more, what does it mean dynamic UL CE utilization.

    B/R

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    Default Re: UL Channel Element utilization exceeding 100%

    Quote Originally Posted by Ghost78 View Post
    Hi electron;

    thanks for your answer, but please could you explain more, what does it mean dynamic UL CE utilization.

    B/R
    hello
    you are using 2 DUW when you are calculating the the utilization you need consider corrected UL/DL CE limits iit means hat you see from stats is based on BBPs So you need to sum up CE limits (lets limit of license or Hw capacity)

    hint is to go to RNC using AMOS and check the HW utilization for that specific site , it gives you a better idea Do you kno how you can check it ??

    cheers

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    Default Re: UL Channel Element utilization exceeding 100%

    Hi babak1349.

    Yes I do the sum of two DUW capacity which gives 1024 for 2 DUW30, and regarding the live hardware utilization I dont know how to do it, could you please share it with me.

    B.R

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    1 out of 1 members found this post helpful.

    Default Re: UL Channel Element utilization exceeding 100%

    cedhr -r iub_XXXXX then you can see the CE utilization for specific site

  8. Thanks gunpowder, jndomingo thanked for this post
  9. #7
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    Default Re: UL Channel Element utilization exceeding 100%

    Quote Originally Posted by babak1349 View Post
    cedhr -r iub_XXXXX then you can see the CE utilization for specific site
    Hi Babak & Ghost,

    From RNC side by whatever way you are actually monitoring static CE utilization which is actually credit utilization. It means that whatever CE you licensed in LKF will be reported to RNC through CE consumption table by NBAP audit to RNC . so considering that CE utilization from RNC side (Lets call it Static CE utilization) can not be more than 100% due to admission rejection .

    There are 2 kind of CE utilization concept in E/// and it called Static and Dynamic CE utilization. Static one already elaborated above and dynamic one is used CE for EUL usage for HARQ processing every 2 or 10 millisecond. This calculation will be done from RBS side and could be above 100% of course and you may not even see any RAB blocking due to UL CE in RNC side !!

    In case of large configuration ( for example 2 DUW ) BBP fraction configuration need to be aligned correctly to have better utilization of dynamic CE . Hope it help you guys.


    Cheers

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