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link imbalance

  • This topic has 5 replies, 1 voice, and was last updated 15 years ago by Bijoy.
Viewing 6 posts - 1 through 6 (of 6 total)
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  • 20th November 2009 at 02:50 #59716
    sewashi
    Guest

    can anyone explain what is negative link imbalance?

    20th November 2009 at 05:11 #59717
    Bijoy
    Guest

    Hi Sewashi
    Path imbalance=Path Loss(DL)-Path loss(UL)
    0r
    Path imbalance=Path Loss(UL)-Path loss(DL),whatever.
    Rest is self explainatory

    20th November 2009 at 07:26 #59718
    sewashi
    Guest

    thanks bijoy. in nokia, the formula for ave link imbalance is

    (2x ave BS power + ave DL signal strength) – (2x ave MS power – ave UL signal strength)

    is this path loss?

    20th November 2009 at 08:05 #59719
    Bijoy
    Guest

    Sewashi
    A little correction.
    DL path loss(dBm) =Avg BS power – combiner loss – Avg DL signal strength
    UL path loss(dBm)= Avg MS power – Avg UL signal strength.

    Br\\
    Bijoy

    20th November 2009 at 08:33 #59720
    sewashi
    Guest

    thanks bijoy. heres the actual formula i copied from nokia documentation. why is it dat ave_dl_sig_str is positive? can you explain?

    Average link imbalance, S2 (lb_13)
    2*sum(ave_BS_power)/sum(power_denom2)+sum(ave_dl_sig_str)/sum(power_denom3)
    -2*sum(ave_MS_power)/sum(power_denom1)-sum(ave_ul_sig_str)/sum(power_denom4)

    Counters from table(s):
    p_nbsc_power
    Unit = dB

    20th November 2009 at 09:35 #59721
    Bijoy
    Guest

    Sewashi
    I’m rather confused with this formula,why dont you use ND Report 208.

    Br\\
    Bijoy

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