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2g huawei

Viewing 15 posts - 31 through 45 (of 51 total)
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  • #63421 Reply
    Mak
    Guest

    Anyone can send the SD Drop formula used by Huwaei.

    #63422 Reply
    Bijoy
    Guest

    Hi Suresh
    A PDCH can at a time support max 9 TBF in DL & 7 TBF in UL,But the theoritical max is 16 TBF in DL & 7 TBF in UL(but not at a time-remember).(As per Huawei—!!!!).As in Nokia & Ericsson,this is again 9 TBF(DL) & 7 TBF (UL).
    Regarding the Timers
    N31301:
    When the network after setting USF for a given TBF, receives a valid data block of this TBF from
    the mobile station in a block assigned for this USF, it will reset counter N3101,otherwise it is incremented by one.If N3101 = N3101max, the network shall
    stop the scheduling of RLC/MAC blocks from the mobile station for this USF and start timer
    T3169(T3169-Wait for Reuse of USF and TFI after the mobile station uplink assignment for this TBF is invalid).

    N3103:
    N3103 is reset when transmitting the final PACKET UPLINK ACK/NACK message within a TBF
    (final ack indicator(FAI) set to 1). If the network does not receive the PACKET CONTROL
    ACKNOWLEDGEMENT message in the scheduled block for this TBF, it shall increment counter
    N3103 and retransmit the PACKET UPLINK ACK/NACK message. If counter N3103 exceeds its
    limit, the network shall start timer T3169.

    N3105:
    When the network after sending a RRBP field in the downlink RLC data block or in Iu mode also
    RLC/MAC control block, receives a valid RLC/MAC control message from the mobile station, it
    will reset counter N3105. The network will increment counter N3105 for each allocated data block
    for which no RLC/MAC control message is received for this TBF.

    Do ask for any doubt.

    Br\\
    Bijoy

    #63423 Reply
    SURESH
    Guest

    Hi bijoy,

    buddy what is the value of t3169 and by if i have more reason for ms no response and if i increase this timer n3101,n3102,n3105 will help to improve tbf sucess?

    and in huawei we have formula for tbf sucess is ul tbf attempts(for gprs+edge)+ dl tbf attempts (gprs+edge) / ul tbf success(for gprs+edge)+ dl tbf success (gprs+edge) .so is it ok because here after esblishing tbf if its drop then its not coming inn picture so can u help?

    #63424 Reply
    Bijoy
    Guest

    Suresh
    The value of t3169 is 5 sec & it is hardcoded in Huawei,so you can’t change it.

    Increasing the MS No response related timers will not help much.

    Regarding the formula,it is totally wrong!!!

    #63425 Reply
    suresh
    Guest

    Hi bijoy ,

    thanks buddy so by increasing this N series counter will not help evena single point?

    and foe formula whats ur sugeestion?

    #63426 Reply
    suresh
    Guest

    Hi bijoy ,

    plz buddy help

    #63427 Reply
    Bijoy
    Guest

    Hi Suresh
    Increasing these timers will help for sure,but not much.Its better to tune other parameters like initial coding scheme,cleaner RF environment,UL & DL release delay,etc,etc….

    Regarding TBF success rate formula,the formula you have mentioned is wrong,because how does attempts comes in numerator & success comes in denominator??
    Now,in case TBF establishment success rate,it shouldn’t consider TBF drop,it will consider only blocking & MS no response.

    Br\\
    Bijoy

    #63428 Reply
    suresh
    Guest

    Hi bijoy,

    buddy sorry formula is reverse like ul tbf success(for gprs+edge)+ dl tbf success (gprs+edge)/ul tbf attempts(for gprs+edge)+ dl tbf attempts (gprs+edge) so is it ok or not?

    and buddy can u tell me one thing like in ericsson gpraprio parameter which will decide dynamic pdch as a idle or busy like that in huawei which parameter is available?

    #63429 Reply
    suresh
    Guest

    Hi bijoy,

    buddy can u help?

    #63430 Reply
    Deb
    Guest

    SD Drop Formula in Huawei

    ([CM30:Call Drops on SDCCH]/[K3003:Successful SDCCH Seizures])*{100}

    #63431 Reply
    Deb
    Guest

    Hi Bijay,

    Do you have any idea about timer T3195, T3191.

    Regarding T3169 the value we can change in the system..
    1. Click on BSC6000
    2.Press Alt+Ctrl+shift+F12
    3. Right clink on BSC6000 & go to Config BSC attributes
    4. Go to inner software papameters.

    It works..

    BR// Debashis

    #63432 Reply
    suresh
    Guest

    Hi bijoy,

    buddy can u help?

    #63433 Reply
    Bijoy
    Guest

    Suresh
    Apologies for delay
    The formulae seems OK.Pls check what counters are included in the success factor.

    As per my knowledge,there is no such parameter in Huawei Like GPRSPRIO in Ericsson,but it may be there.

    Also,kindly check for T3169 like “Deb” said,if possible & let me know.

    Aside Deb,thanks,nice info

    Br\\
    Bijoy

    #63434 Reply
    suresh
    Guest

    Hi bijoy,

    thanks buddy but i think this formula looks like gprs/egprs establishment sucess rate is it?

    because as per this formula after tbf establishment if tbf is drop then ther is no counter included here so am i right?can u share other formula?

    and what u want to say by this i am not geeting it..
    Also,kindly check for T3169 like “Deb” said,if possible & let me know.

    Aside Deb,thanks,nice info

    #63435 Reply
    Bijoy
    Guest

    Yes
    It is the formula for TBF establishment success rate(100-TBF blocking).

    The formula for TBF drop rate(100-TBF completion rate) will be different.

    I asked you to check whether T3169 is modifible or not.

    Br\\
    Bijoy

Viewing 15 posts - 31 through 45 (of 51 total)
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