Patent ID: 6128497
Filing Date: 2000-10-03
Classification: H04W

Abstract:
A method for fractional frequency allocation in a cellular radiotelephone system, the cellular radiatelephone system having a plurality of available frequencies and comprising a plurality of cells, the method comprising the steps of:forming a group of cells comprising a subset of the plurality of cells;grouping the plurality of available frequencies into a plurality of frequency groups;assigning a different frequency group, of the plurality of frequency groups, to each cell of the group of cells; andreusing the frequency groups within the group of cells such that a first use of a first frequency group and a first and second reuse of the first frequency group are each located at a respective apex of a first triangle, each first frequency group use radiating 120.degree. from the other use, there being no other triangles having apexes coincident with use of the first frequency group, which other triangles are congruent with or similar to the first triangle and which abut, are adjacent to, or are proximate to the first triangle.