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Why TSC(Training seq code) = BCC

  • This topic has 13 replies, 1 voice, and was last updated 8 years ago by pix.
Viewing 14 posts - 1 through 14 (of 14 total)
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  • #41786 Reply
    Mohammad Yasin
    Guest

    Hi All,
    I have read a lot of times that according to GSM Standard 05.02 TSC Training sequence code must be equal to BCC (Base station colour code)but didnt got the explanation why this rule has been standardised.
    Regards

    #41787 Reply
    M.Thyagarajan
    Guest

    it is only true for the BCCH TRX.
    Because in the BCCH info broadcast the BCC is sent and inorder to verify whether the BCC is correctly decoded or not, it is compared with the TSC at the MS end.

    But for other TRX’s the TSC can be changed but it has to be planned properly.

    #41788 Reply
    DriveTest
    Guest

    how to plan the TSC for the non-BCCH TRX? is there any algorithm to follow?

    #41789 Reply
    Pix
    Guest

    In alcatel, the TSC is defined for the whole cell, it’s not defined per TRX.
    So it can’t be changed per TRX (in alcatel)

    #41790 Reply
    milenio
    Guest

    Correct me if I am wrong but TSC is from 0-7 and it is that, because there are only 8 Training Sequences Codes, which are as a part of the Normal burst and is used to measure BER, and if the message is decoded correctly. as I’ve seen it is possible to define different TSCs for different channel groups, e.g 900/1800 band.

    #41791 Reply
    Kamal
    Guest

    Milenio is right..
    In fact u can experience this during trx creation from bsc console in nokia…
    zerc for creation n zerc for deletion…

    #41792 Reply
    Pix
    Guest

    Different vendors, different possibilities 🙂 Alcatel does not allow different TSC within the same cell, even if there are 2 frequency band’s “groups”.

    #41793 Reply
    Amo
    Guest

    Hello All,

    We have ALU network.

    How to plan TSC?
    Should/Must be =BCC per cell?

    What’s the outcome if there’s no plan with TSC? Or what’s the benefit to have a TSC plan (QoS improve…)?

    #41794 Reply
    zen
    Guest

    Can anybody reply for the below Q

    We have ALU network.

    How to plan TSC?
    Should/Must be =BCC per cell?

    What’s the outcome if there’s no plan with TSC? Or what’s the benefit to have a TSC plan (QoS improve…)?

    My question isn’t TSC should be default as i have never changed it as an optimizer.

    #41795 Reply
    AKS
    Guest

    Hi to all that is nice Question…..Pls any expert explain it

    #41796 Reply
    jesson
    Guest

    Dear all,

    Could you please replay for my question, i have some issues regarding Egprs & Gprs traffic i’ve found some cells with Zero traffic,what i can do , i’ve already checked all parameters i don’t find any discrepencies, i want to know which parameter is responsible of this problem

    #41797 Reply
    Vikas Sehrawat
    Guest

    Training sequence is a 26 bit pattern often transmited in Normal Burst of TCH channel for radio link quality estimation and equalization.
    The main functions of the tranning sequence code are.
    1.Used to determine signal distortion and bit error rate.
    2. Used for timing Advance(TA) alculation.
    3. Used as a channel Identifier.
    4. Used for equalisation purpose.
    The TSC is equipped on a TDMA time slot basis The Tranning sequence code of timeslot ” 0″ of the BCCH carrier should be equal to the BCC of the cell.
    Value Range; 0-7

    #41798 Reply
    Dell
    Guest

    Hi,
    in one BSC we changed TSC values and set to equal BCC. What indicator we can check in NPO in order to see changes for good or for bad. Vendor ALU.
    Regards,
    Dell

    #41799 Reply
    pix
    Guest

    Hi Dell,

    I think it helps with HO Execution Rate, or CSSR (sdcch assignment success rate ?)

    But I’m not sure…

    Regards,
    PIx

Viewing 14 posts - 1 through 14 (of 14 total)
Reply To: Why TSC(Training seq code) = BCC
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