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TCC

Viewing 11 posts - 1 through 11 (of 11 total)
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  • #47293 Reply
    JAOS
    Guest

    HELLO EVERYBODY:
    Which is the effect when do you apply TCC in bspwrb & bspwrt? this change also affects the capacity?

    #47294 Reply
    Pix
    Guest

    hello jaos,

    i’m not familiar with the terms you are using…

    #47295 Reply
    JAOS
    Guest

    BSPWRB & BSPWRT ARE PARAMETERS FROM ERICSSON GSM AND THEY ARE PARAMETERS THAT POWER TRANSMITED.
    I NEED TO KNOWN HOW ARE CHANGES IN CAPACITY INSTALED FOR TCH&SDCCH

    #47296 Reply
    Pix
    Guest

    Hi Jaos,

    bs pwr = transmitted power by the BTS, so i gather it acts on DL power attenuation or DL power control… bu your definition doesn’t give the specifics.

    normally, changes in emitted power doesn’t modify the capacity of a cell, neither in TCH nor in SDCCH, but i need to know the exact definition of these parameters to be sure.

    #47297 Reply
    Tufail
    Guest

    Hi JAOS,

    TCC means Transmit Cohorent Combining, this is an Ericsson feature that provide addition 2dB gain on transmitting.

    47dBm + 2dBm = 49dBm

    but main disadvantage of this feature is that it reduces capacity by half. 2TRX act as 1TRX, 4TRX act as 2TRX.

    thsi feature is mainly used on Highway sites.

    Hope this will help.

    Consultant some Doc on TCC

    #47298 Reply
    Pix
    Guest

    Oh that’s interesting. Alcatel is just introducing the same feature with its new TWIN trx modules. Those TWIN trx can be configured in such a way that they use 2-Tx diversity, for half the capacity.

    The gain is coming from the use of TX diversity, which should be about +3dB in urban areas (depending on environment).

    #47299 Reply
    JAOS
    Guest

    tufail & pix:
    Thanks for your contribution it is a good explanation

    #47300 Reply
    Tanvir
    Guest

    Hi Tufail,

    Thanks for your explaination.
    Can you please assist why we use TCC in our network and we have 8/8/8 configuration.
    can we not use TCC in urban areas? If yes , what will be the configuration.

    And if you have any doc please mail that to me.
    tanvir_uk2002@yahoo.co.uk

    #47301 Reply
    Tufail
    Guest

    Salam Tanvir,

    As already said the capacity reduces to half of the capacity available.

    As far use in urban areas is considered I think this is not a gud idea as the intersite is very less and havin asite with this much of power will disturd the frequecy plan.

    So its better to use this feature in rural areas and HW.

    One more this I like to add we can use it in OL/UL mode.

    Hope it will help.

    Regards
    Tufail

    #47302 Reply
    Gaurav Kalra
    Guest

    what is TCC?
    what it means for us in respective applications?

    #47303 Reply
    Yaqubi
    Guest

    Hello Tanvir ,

    I have applied TCC on a Cell and the power is changed on BSPWR & BSTXPWR from 47 to 79 and the power in BCCH channel remained the same 47 and while I am appying to change on BCCH channel is not possible .

    the feedback and experienced I go it only traffic improvement and degradation on DCR % it is increased from 2 % to 13 % . I got that this DCR is due handover drop and could be problem of imbalanced power , kindly need your recommendation guys .

    Thanks ,

Viewing 11 posts - 1 through 11 (of 11 total)
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