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Muitlple CCCH

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  • #55882 Reply

    Anyone knows the advantage/ disadvantages of using muntiple CCCH channels on a cell?
    We are upgrading from ALcatel B9 to B10, and are contemplating buying this feature.

    #55883 Reply

    “Contemplating” :)) that sounds deeply religious.

    Disadvantage : one TCH is reconfigured as a CCCH timeslot

    Advantage : double the Paging, Access Grant and Random Access capacities.

    It’s the only way to have big cell configuration (> 12 TRX) without having control channels congestion, so in my opinion it’s a mandatory feature. Especially when you add the PS Paging load on top of the CS Paging. The 9 CCCH per BCCH is a bit light.

    Everything that allows more traffic capacity is a must-have 🙂 It gives you an immediate return on investment.

    In B10, you’ll also have access to new counters to check the PCH/AGCH/RACH congestion more precisely (the B9 counters are not very reliable, as far as i remember).

    #55884 Reply

    Thanks pix.
    Does that mean that if we use multiple CCCH channels we could increase the LA sizes (and therefore number of pagings in each LA) without increasing the paging load?

    #55885 Reply

    without mCCCH, one MX BSC can care for 4 LACs of 125 cells each, max.
    with mCCCH, one MX BSC : 2 LACs of 250 cells each.

    that’s an example…

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