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TCH drop in BSC due Quality uplink

Viewing 13 posts - 1 through 13 (of 13 total)
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  • #46214 Reply
    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

    #46215 Reply
    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.

    #46216 Reply
    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

    #46217 Reply
    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,

    #46218 Reply
    Juan
    Guest

    I have drops by LOWSS

    #46219 Reply
    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.

    #46220 Reply
    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

    #46221 Reply
    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.

    #46222 Reply
    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

    #46223 Reply
    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.

    #46224 Reply
    C.Balasubramanian
    Guest

    How to improve the poor uplink in GSM network

    #46225 Reply
    D
    Guest

    ya i have got the result by power control

    but some of cell having high ho failure

    #46226 Reply
    BAKANIBONA Fabrice
    Guest

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

Viewing 13 posts - 1 through 13 (of 13 total)
Reply To: TCH drop in BSC due Quality uplink
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