Importance

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Abstract

In a mobile radio communications system comprising a control station and base stations, each base station is capable of sensing power levels of signals received on idle channels. In response to a polling signal periodically sent from the control station, each base station returns a signal indicating the detected power levels, the identifications of the idle channels, the identification of a busy channel or no-busy channel indication, and the identification of each of the base stations. The control station derives an interference table from the contents of the signals received from all base stations. The table defines interference coefficients between all pairs of base stations in matrix form according to the identifications of the idle and busy channels and the identifications of the base stations. From the interference coefficients a plurality of interference estimations are derived for all possible combinations of channels and base stations. A minimum value of the interference estimations is detected and the channels associated with the minimum value are assigned to the base stations. The assigned channel identifiers are communicated from the control station to the base stations.

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First Claim