Patent ID: 7231214
Filing Date: 2007-06-12
Classification: H04W

Abstract:
1. A repeatable pattern of frequency reuse in a wireless communication system comprising: sixteen substantially circular cells of approximately the same radius arranged in a four-by-four grid such that no two cells substantially overlap and where each cell is substantially tangent with its adjacent rank and file neighbors, wherein each cell includes a hub with four antennas wherein each antenna services a separate one of four substantially non-overlapping ninety degree sectors and is capable of communicating on each of eight frequencies and on either of two polarizations per frequency, whereby for each hub one set of opposing ninety degree sectors communicate on a one of said eight frequencies at a one of said polarizations and the other set of opposing ninety degree sectors communicate on a different one of said eight frequencies at the other of said polarizations; eight cell types wherein each cell type communicates over a unique combination of frequencies; a first and a second group of four cells, each group comprising a two-by-two grid of cells such that, a third and a fourth group of four cells, each group comprising a two-by-two grid of cells such that, said third group of four cells comprising the same four cell types as said first group wherein the frequency and polarization assignments are interchanged between the pairs of opposing sectors for each cell, said four cells arranged identically to the cells in said first group, and said fourth group of four cells comprising the same four cell types as said second group wherein the frequency and polarization assignments are interchanged between the pairs of opposing sectors for each cell, said four cells arranged identically to the cells in said second group; wherein said four groups of cells are arranged in said four-by-four grid so that said first and third group of cells are not rank and file adjacent and so that facing cells between rank and file adjacent groups are of different frequencies.