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Routing Area (RAC ) Update

Viewing 15 posts - 1 through 15 (of 19 total)
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  • 8th January 2005 at 07:53 #40460
    Arindam Dey
    Guest

    Hi,
    I have a typical problem in a Siemens BSS. I found recently in a drive test, that everytime a call is terminated, the phone makes a “Routing Area Update”, even though the RAC is not actually changing. This raises two questions.

    1. Is there any parameter which causes this to happen ( there must be ). If it does, is it related to PCU, SGSN or GGSN. What is this parameter called.Apparently it is like the periodic registration.

    2. If the mobile does make a RAC update, should it not be instructed to do so in one of the system info messages?? ( May be sys info 13 ).

    Please Help

    Thanks

    Arindam

    10th January 2005 at 13:05 #40461
    Mohammad Yasin
    Guest

    Hi Arindam ,

    can you please tell the handset model you have used or it is for all the handsets.
    Reply soon.

    11th January 2005 at 06:33 #40462
    Arindam
    Guest

    Hi Mohammad,

    The typiclal Sony Ericsson T610 which comes with the TEMS investigation these days.

    However, does it really depend on the model ? I guess, there should be some message in the BCCH which instructs the phone to do a RAC update.

    I any case let me kow your views

    12th January 2005 at 14:53 #40463
    Mohammad Yasin
    Guest

    hi Arindam ,
    Try it with Nokia Handsets .In Nokia handsets there is a option in GPRS settings when needed and always online.In always online the case should be that which you are talking about and in some Sony ericcsson handsets they have inbuilt always online mode.

    Regards,

    13th January 2005 at 06:07 #40464
    Tally
    Guest

    Hi,
    most probably you’ll have the same problem with Samsung mobiles. They don’t have possibility to define GPRS option as when needed. So they are always online as Sony-Ericsson.
    Regards,

    16th January 2005 at 15:15 #40465
    Mohammad Yasin
    Guest

    HI ARINDAM
    TELL ME YOUR PROBLEM HAS BEEN SOLVED OR NOT.I THINK IT SHOULD BE SOLVED BUT IF NOT TELL ME I WILL TRY TO SOLVE IT

    REGARDS

    24th January 2005 at 04:03 #40466
    Arindam Dey
    Guest

    Hi Mohammad,

    Sorry for the delayed reply. Well I could not check the phenomena in a Nokia Handset, as I do not have one at my disposal.
    However I would like to add one crucial piece of information. I did a little drive test in Ericsson BSS and Motorola BSS area also.
    This problem was not observed in Ericsson area. If u let me know ur e-mail id, I can also send u the logfiles.

    2nd February 2005 at 13:38 #40467
    jitu
    Guest

    hi Arindam,

    I m working on Nokia BSS Systems,
    i m also finding the same problem as u, & also i m having TEMS system for drive test, so can any one help me out to resolve this problem???

    3rd February 2005 at 00:21 #40468
    Mohammad Yasin
    Guest

    Hi Jitu
    i am giving same solution to you which i gave to Arindam.
    Try it with Nokia Handsets .In Nokia handsets there is a option in GPRS settings when needed and always online.In always online the case should be that which you are talking about and in some Sony ericcsson handsets they have inbuilt always online mode.

    i am waiting logs fro Arindam and after your reply we can think in a new way
    Regards

    3rd February 2005 at 00:26 #40469
    Mohammad Yasin
    Guest

    Hi Arindam
    Sorry for replying late but i replied on 31st also and on 1 feb but dont have idea what happened.Anyways now same problem is being faced by jitu also.
    Together we can work out a solution.
    Reply soon
    Regards,

    5th February 2005 at 03:51 #40470
    Arindam Dey
    Guest

    HI Mohammed,
    I need ur e-mail id to send the logs. Can u post ur e-mail id.

    Arindam

    8th February 2005 at 17:04 #40471
    Mohd. Yasin
    Guest

    Hi
    my e-mail id is engineeryasin@yahoo.com

    14th March 2005 at 17:03 #40472
    Oliver
    Guest

    Hi all:

    We experimented the same problems in our network.I found in GPRS standard this is a normal procedure to perform a R.A. update after CS call is release. This is to inform the network the location of the subscriber and is iniciated by the handset.
    This R.A. update ocurrs to users which are register in SGSN VLR and are on either ready or standy state.

    14th March 2005 at 17:27 #40473
    Scot
    Guest

    Hi Oliver,

    This is ( RA Update ) only 4 COMBINED ATTACH Susbcribers or for all ?

    And who determines this action ?

    GGSN/MS ?

    15th March 2005 at 14:18 #40474
    Oliver
    Guest

    RAU is done for every GPRS user after it finishes CS call.
    Depedning on which network mode are you using in your network it can be only RAU normal or combined

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