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C1 calculation

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  • #62484 Reply
    Bibbo
    Guest

    during idle mode, i saw cells with constant rxlev but varying C1 and one other cell has less rxlev but constant C1 and evantually making cell reselection which is not desired, i checked all related parameters they are default(cro is 0 also)

    so what can be affecting when measuring C1 and what can be the reason on varying C1 value?

    is C1 calculation done by MS?

    #62485 Reply
    Pix
    Guest

    C1 varies only if RXLEV varies.
    The RXLEV is from the BCCH frequency.
    Due to multipath and measurement process, it is possible that RXLEV varies with a range of -6dB to +6dB.
    In other words, the C1 shows variations of -6 to +6… but that’s normal.

    Much more than this means there might be a hardware issue on the TRX1.
    Or it might mean you are in a highly reflective terrain, with lots of multi-path and lots of fast fading.

    cheers
    pix

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