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[Erricson] Parameter Values for Subcells

Viewing 7 posts - 1 through 7 (of 7 total)
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  • #66214 Reply
    Mania
    Guest

    Hi,
    What are the Typical values of LOL/ LOLHYST / FBOffset between UL GSM900 and OL DCS1800. we are using 125, 3, 12.
    How these values are changed with TCC?

    #66215 Reply
    DIGI2
    Guest

    Default value for LOL in E// is 150, 3 for LOLHYST. As for frequency band offsets 0 is the default for both +ve and -ve values (i stand to be corrected for FBOFFS).
    By TCC do u mean Transmitter Coherent Combining?

    #66216 Reply
    Mania
    Guest

    Yup Transmitter Coherrent Combining. Also ideally FB offset should be close to 8 dB due to higher path loss at higher frequencies. Pls suggest

    #66217 Reply
    DIGI2
    Guest

    Hi Mania,
    We mostly have FBOffset at 9dB but the 0 i referred to was Ericsson default.
    If i may ask, why do u use TCC…we apply it for coverage mostly in rural areas where traffic is not that high. In densely populated areas where there is high traffic, we employ OL DCS 1800 for capacity, therefore no need for 1 site to cover a huge area.

    #66218 Reply
    Mania
    Guest

    Its related to procurement issues so we have to provide coverage to an area but we cannot get a site in the compound so we have to rely on providing coverage from outside site, since all this is in the middle of the city we have to use TCC and capture the far off traffic from the expanded GSM.

    Any idea for LOL and LOLHYST settings i think FBOFFSET should be increased to 12, as path loss would be more

    #66219 Reply
    DIGI2
    Guest

    Try LOL around 110. May also have to enhance the UL path as drops will surely increase.

    #66220 Reply
    jitendra
    Guest

    We’re implementing first time 1800 band in our existing 900 band system.

    Required your help for the parameters required and recommend values of all these parameters.

Viewing 7 posts - 1 through 7 (of 7 total)
Reply To: [Erricson] Parameter Values for Subcells
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