N=4 directional frequency assignment in a cellular radio system

Details N=4 directional frequency assignment in a cellular radio system N=4 directional frequency assignment in a cellular radio system

1997-08-08

1999-10-19

Chin, Wellington

Telecommunications

Radiotelephone system

Zoned or cellular telephone system

455446, 455449, 455450, H04Q 720

Patent

active

059704110

ABSTRACT:
The process of the present invention is based on a tri-cellular, hexagonal platform where six, or a multiple of six, frequency groups are directionalized and reused in the same direction. Directional antennas are located in the center of each tri-cell group. Each antenna radiates into a 120.degree. sector of the tri-cell group. The reused frequency groups are aligned along the 0.degree., 120.degree., and 240.degree. axes of each cell. Each axis has three layers, the two outer layers having an identical frequency reuse series. The frequency groups are reused in the same direction along each axis, reducing the number of dominant interfering cells to one.

REFERENCES:
patent: 5073971 (1991-12-01), Schaeffer
patent: 5111534 (1992-05-01), Benner
patent: 5247699 (1993-09-01), Hartman
patent: 5734983 (1998-03-01), Faruque
patent: 5802474 (1998-09-01), Faruque

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