Telephonic communications – Having light wave or ultrasonic link for speech or paging... – Including fiber optic link within telephone network
Patent
1993-05-24
1994-11-15
Kuntz, Curtis
Telephonic communications
Having light wave or ultrasonic link for speech or paging...
Including fiber optic link within telephone network
455 331, H04M 1100, H04Q 700
Patent
active
053655710
ABSTRACT:
A cellular radio-telephone system has a plurality of cells each of which has S sectors. The cells are grouped into a plurality of clusters each of which has N adjoining cells. Each cell has a set of assigned system frequencies with respective frequency subsets assigned to its sectors so that N groups of co-channel cells exist with each co-channel cell group including one cell from each cluster having channel frequencies corresponding to those for its co-channel cell group. Respective base station antennas are located in the respective sectors of the respective cells, and each of the cell sectors has a plurality of subscriber station directional antennas disposed at predetermined locations within the sector for communication linkage with the associated base station antenna. The cells are generally formed in rows and columns and further are formed to provide a predetermined relative orientation pattern for co-channel cell sectors. Co-channel cells form a first cell tier around a preselected center co-channel cell with a common direction operative as a reference orientation direction for co-channel sectors therein. Co-channel sectors in successive co-channel cells about the first tier being successively oriented in alternating first and second directions with sectors rotated by at least one sector rotation from the reference direction in the clockwise or counter-clockwise direction.
REFERENCES:
patent: 5073971 (1991-12-01), Schaeffer
patent: 5247699 (1993-09-01), Hartman
Mouly, Michel. "Regular cellular reuse patterns", 41st IEEE Vehicular Technology Conference. Gateway to the Future Technology in Motion (Cat No. 91CH2944-7) pp. 681-8, 1991.
Kay Stanley E.
MacDonald Andrew J.
Rha Peter S.
Chernoff Michael B.
Denson-Low Wanda K.
Hughes Aircraft Company
Kuntz Curtis
Lindeen III Gordon R.
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