Generic selectors
Exact matches only
Search in title
Search in content
Search in posts
Search in pages

Paging flow control alarm MSC Ericsson

Viewing 12 posts - 1 through 12 (of 12 total)
  • Author
    Posts
  • #62231 Reply
    baba
    Guest

    Hi,
    We sometimes get a “Paging flow control alarm” for a LAI at the MSC. At the same time it is difficult to terminate calls on this LAI. Originating calls have no problems. Looking at the statistics we notice that all BTS of this LAI have a lot of discarded pages due to full paging queue but zero or very few discarded pages due to old paging messages. We use Ericsson GSM(MSC R13). The MFRMS is 2 for all the BTS of the LAI.This LAI have about 40 BTS (S444) for a BHT of 3500E. We have on average 86 first paging attempt per second and a second page retransmission of 30% on the LAI.
    Is the LAI split the solution?
    Thanks for your responses

    #62232 Reply
    Bijoy
    Guest

    Baba
    This means you have around 87Erl/site which is quite huge.Since MFRMS is set low,this is a normal phenomenon of paging overload.Consiering all other paging parameters(MSC & BSC)in place,You can go for a LAC splitting.

    Br\\
    Bijoy

    #62233 Reply
    baba
    Guest

    Thanks for your response.
    We are planning the splitting.

    BR

    #62234 Reply
    Deepak Singh
    Guest

    Yes, I think LAI splitting is the good solution.LAA splitting helps to decrease the PCH load congestion as a result its PSR will improve.BUT Before splitting it is mandatory to check how many cells are define.For large number of cells it is better.Splitting mays increase SDDCH congestion.So,optimum measurement is required

    #62235 Reply
    ahishek
    Guest

    how MFRMS is related with paging??? here we give it as 4. in some place it is 2 and 5

    #62236 Reply
    Deepak
    Guest

    Hi
    MFRMS RELATED TO PAGING GROUPS.
    FOR NCOMB
    PAGING GROUP=(9-AGBLK)*MFRMS
    FOR COMB
    PAGING GROU=(3-AGBLK)*MFRMS

    #62237 Reply
    Arvind Solanki
    Guest

    What is paging discarded time by MSC.

    #62238 Reply
    thabo
    Guest

    Hello kindly notice that Paging flow control alarm is caused by high volume of sms-paging. once bulk SMSes are send then there would be high volume of sms-paging. try to check by the time you recieved the alarm there were no bulk SMS send.

    #62239 Reply
    Mahmoud
    Guest

    Hi,

    LAC split is one solution, but before it check that is there any action from MSC side for this messages or not?

    I have faced MSCs which didn’t into account these messages at all,and in the other hand BSC has paging discarding ability which can do MSC responsibility in this case, so we deactivated the feature in BSC to avoiding signaling link high utilization between MSC and BSC.

    Br,
    Mahmoud

    #62240 Reply
    sosie
    Guest

    Hello,

    how is this paging flow control mechanism working in ericsson MSC? what are the parameters to define it?

    Thanks

    #62241 Reply
    Manii
    Guest

    Hi there,

    I am less experience wrt optimization i have to optimize one Ericsson MSC as stats are degraded since start so i have to optimize it please let us know to follow the steps and parameters till cell level it will be highly appreciated

    #62242 Reply
    Almeida
    Guest

    I am working with an operator (Ericsson BSS) having LAC its diferent of RAC for all cells. Please what are risks ?
    and now we have a RAu no successes rate

Viewing 12 posts - 1 through 12 (of 12 total)
Reply To: Paging flow control alarm MSC Ericsson
Your information:




<a href="" title="" rel="" target=""> <blockquote cite=""> <code> <pre class=""> <em> <strong> <del datetime="" cite=""> <ins datetime="" cite=""> <ul> <ol start=""> <li> <img src="" border="" alt="" height="" width="">