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TCH drop in BSC due Quality uplink

Viewing 13 posts - 1 through 13 (of 13 total)
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  • 22nd November 2006 at 08:34 #46214
    vijay
    Guest

    In my network drop due quality uplink is high which contributing around 45% of the network call drop. can anybody tell how to improve the network and what are methods to check

    Details of my netwok

    GSM 900/ 1800 Band – Ericsson network- 6,6,6 TRx configaration with 31 ARFCN in GSM 900 & 12 ARFCN in GSM 1800

    23rd November 2006 at 09:07 #46215
    pix
    Guest

    did you activate the UL power control and the DTX uplink ?

    if no : activate them

    if yes : check your UL power control thresholds (upper and lower), decrease those values by few dB in order to reduce the overall uplink noise in your network.

    24th November 2006 at 05:11 #46216
    VIJAY
    Guest

    HI PIX THANKS FOR UR INFO
    WE AHVE ALREADY ACTIVATED UL PWR CONTROL AND DTX UL

    WE HAVE UL PWR CNTRL AS
    SCTYPE SSDESUL SSLENUL LCOMPUL
    ALL 92 3 10
    QDESUL QLENUL QCOMPUL
    40 3 50
    REGINTUL DTXFUL
    1 5
    are these parameters as correct

    24th November 2006 at 07:36 #46217
    Iwan
    Guest

    Hi Pix

    I Have same problem in my site high TDROP bad quality uplink.

    Network GSM900 Band – Ericsson Metwork 2,2,2 TRX Configuration

    Thanks,

    2nd May 2010 at 02:14 #46218
    Juan
    Guest

    I have drops by LOWSS

    12th January 2011 at 10:14 #46219
    Gorada
    Guest

    all BSC’s in my GSM 900 network are suffering from an increasing on TCH drop rate with bad quality up link and sudden reasons.
    TCH drop rate 0.87% to 1.6%.
    what do you think I have to do to improve it? by the way all power control parameters set correctly.

    12th January 2011 at 10:42 #46220
    SHELDON
    Guest

    That is a huge increase. Are you absolutely sure no parameter has been changed (eg, BADQUL on the BSC)?

    Let your BSS/Core network guys perform a synchronization audit.

    If you’ve not already done so, please activate Interference Rejection Combining (IRC). It will definitely help with the uplink quality drops.

    Regards

    28th April 2011 at 04:21 #46221
    taufik
    Guest

    Hi,

    I have same problem with drop due to Bad Quality Uplink on GSM network and I try to swab layer between GSM and DCS and it work.

    3rd May 2011 at 12:56 #46222
    Rami
    Guest

    Hi,

    Please check if ICM is active (Idle Channel Measurements)

    ICM bands are used for prioritizing good quality channels for allocation first and keeping the bad ones as a last resort.

    Good Luck

    4th May 2011 at 13:46 #46223
    Smart
    Guest

    Dear all
    You should check the TA of drop calls. If your drop calls are at far places down tilt your antennas or if you dont want to loose coverage install TMA. TMAs will improve your UL strength.

    30th September 2011 at 13:11 #46224
    C.Balasubramanian
    Guest

    How to improve the poor uplink in GSM network

    5th January 2012 at 20:02 #46225
    D
    Guest

    ya i have got the result by power control

    but some of cell having high ho failure

    19th February 2014 at 09:13 #46226
    BAKANIBONA Fabrice
    Guest

    I have the same problem on just one cell. Can someone help us?

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