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BCCH Failure

Viewing 15 posts - 61 through 75 (of 84 total)
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  • 18th October 2005 at 12:44 #36673
    jood
    Guest

    E1=32time slots(64kb/s)
    1 TRX= 2 time slot on E1
    ….. for TRU basic function I think i send it for you (BTS description) by monaemh.

    23rd October 2005 at 05:35 #36674
    Dilip Krishna
    Guest

    Hi..

    What exactly is this Assignment failure ratio? I am working on the Nortel system and the most of the sites shows a lot of assign failure ratios.Can u pls clarify..

    23rd October 2005 at 11:48 #36675
    Vart
    Guest

    Hi All ,
    As to SFH(JD’s question) – what’s use in 4\4\4 cells with 25 frequencies avalaible? Taking into account BCCH carrier and guard, we have 9 freq. avalaible. Even with SFH, you have 3 neigbouring cells, 3 TRX(+BCCH) each. What about the interference? What is the real rechable value of load in this area?

    26th October 2005 at 06:14 #36676
    jood
    Guest

    hi Dilip Krishna
    assignment on what TCH or SDCCH or what quz there is diff kinds of assignment.

    2nd November 2005 at 14:59 #36677
    VIiar gomes
    Guest

    Could you please tell me ,how many
    traffic channels can be used (simultaneously)per every (GSM)frequency.This using FR TCHs.

    As 2 TS are used for signalling I assume that max.6 RF TCH can be sued.

    BR/Vilar

    7th November 2005 at 18:07 #36678
    JOHN WILLIAMS
    Guest

    I WANT TO KNOW IF VODACOM, IS USING ALCATEL OR ERICSSON BTS EQUIPMENT FOR THIRE NETWORK OPERATION.

    9th November 2005 at 06:24 #36679
    sunny
    Guest

    V.Gomes,

    Consider following example, u have 1 base station having 3 sectors n u have 9 TRX (freq). Therefore 9TRX will be divided in 3sec. Hence 1 sec wil have 3TRX means 3×8=24 time solts. out of 24 TS 1 will be used for BCCH,1 for SDCCH n remaining 22 FR TCH.

    Same applies for other sectors.

    Note;Only first TRX of that particular sector will have BCCH or SDCCH remaining all 8 TS of other TRX can be used for TCH.Also in some cases there can be more then 1 SDCCH (say2),then number of TCH will be 21.

    Got it

    11th November 2005 at 08:43 #36680
    jai
    Guest

    hi sunny

    you might be confusing while explaning that configuration ……..
    Actuall I’ve worked as a O&M engineer..
    if you have a 3+3+3 comfiguration..
    then in each sector there is 1 TRu for BCCH(signalling)..
    and the remaining 7 TS in each sector r used for Voice tranmission..

    with regards

    11th November 2005 at 08:46 #36681
    jai
    Guest

    ANd i forgot to tell you that while commisioning a BTS there are some tests.

    LIKe BCCH Shifting test

    Diversity TEst………

    Each CDU has one main RX path and One DIV path
    bye

    11th November 2005 at 10:29 #36682
    sunny
    Guest

    jai, in ur case the BCCH & SDCCH shares same TS. Am I right???

    But I have given very general example in which BCCH & SDCCH are on different TS.

    Bye.

    12th November 2005 at 11:21 #36683
    ABHINAV
    Guest

    hi all

    I want to know about ICM band..
    it is shown at BSC end…..
    bye

    13th November 2005 at 10:56 #36684
    sanjeev
    Guest

    can anyone tell me why TRAU is used in Abis interface. what are its important function?

    1st December 2005 at 12:00 #36685
    nidhin
    Guest

    Hi all,

    A FACCH comes in when u require handoff during TCH. But how is handoff done when in signalling mode SDCCH or when in idle mode?

    regards,

    nidhin

    1st December 2005 at 13:41 #36686
    jood
    Guest

    HO in dedicated mode not in idle mode.

    13th February 2006 at 13:01 #36687
    AYAT
    Guest

    hay
    whai is the difference between TCH assign Failure & TCH alocated Failure?
    thanks

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