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Selection & reselection

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  • #67189 Reply

    hi all
    I am a new optim engineer , could any one explain me how we use selection and reselection parameters in Ericsson in order to improve coverage for both urban and rural areas , I mean the values attribution for the parameters CRO, PT, ACCMIN,CRH..

    #67190 Reply

    Hi Alex
    For Ericsson
    The quantity C1 is calculated as follows:
    C1 = (received signal level – ACCMIN) – max(CCHPWR – P, 0)
    ACCMIN is the cell parameter that indicates the minimum received signal
    level at the MS required for accessing the system.
    CCHPWR is the cell parameter that indicates the maximum transmitting
    power that an MS is allowed to use when accessing the system.
    P is the maximum power output of the MS according to its class.

    C2 is calculated as follows:
    C2 = C1 + CRO – TO * H ( PT – T ) for PT ¹ 31
    C2 = C1 – CRO for PT = 31
    where C1 is defined by Eq. 1,
    if u want to increase the coverage u should do the following changes:

    CRO = 4
    PT = 31
    ACCMIN = -104
    CRH= 6

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