Frequency reuse planning for CDMA cellular communication system by grouping of available carrier frequencies and power control based on the distance from base station

Claim 1

A broadband cellular communication system consisting of a plurality of cells, the plurality of cells being located substantially adjacent to one another, with each cell containing an antenna centrally located within-the cell, and the system for supporting radio communication using forward radio links between a base station connected to the antenna and a plurality of mobile stations located in the cell using a plurality of radio carrier frequencies, the forward radio communication links between the base station and the mobile stations being of the broadband encoded type such that multiple mobile stations may share a radio carrier frequency without interfering with one another, the system comprising: means for grouping available radio carrier frequencies into a number, n, of groups, with the assignment of frequencies to groups being exclusive such that any one available frequency is only assigned to one group and such that a frequency may be assignable to more than one mobile station; means for determining a radial distance, d, between the base station antenna and a particular mobile station within a cell; means for determining from the radial distance, d, which of a plurality, n, of concentric rings positioned about the base station antenna that the particular mobile station is located in; and means for assigning a radio carrier frequency to the forward link for servicing the particular mobile station based upon which of the n concentric rings that the particular mobile station was located in, such that interfering signals received by the particular mobile station from other forward radio links in the cell at the same carrier frequency are of approximately the same power level.