Telecommunications – Transmitter and receiver at separate stations – Distortion – noise – or other interference prevention,...
Reexamination Certificate
2006-11-14
2006-11-14
Anderson, Matthew D. (Department: 2618)
Telecommunications
Transmitter and receiver at separate stations
Distortion, noise, or other interference prevention,...
C455S450000, C455S562100, C370S902000, C370S903000, C370S905000
Reexamination Certificate
active
07136624
ABSTRACT:
An object is to select destination mobile stations so as to prevent directional beams directed to the respective mobile stations from interfering with each other in application of a directional antenna, and to allocate the radio resources to the mobile stations thus selected. A base station10, which is capable of forming a plurality of directional beams directed to a plurality of mobile stations by applying a directional antenna11capable of adaptively varying directivity, to a transmission-reception antenna, is provided with a location estimator19for estimating a location of each mobile station on the basis of orientation information of the directional antenna; a reception quality estimator22for estimating a reception quality of each mobile station; a transmission priority calculator21for calculating a transmission priority of a packet to be transmitted; a determiner16for determining the number and directions of directional beams to be formed, based on the reception quality of each mobile station, location of each mobile station, and transmission priorities of packets; and an allocation controller13for allocating the plurality of directional beams thus determined, to a plurality of mobile stations.
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Abeta Sadayuki
Ofuji Yoshiaki
Sawahashi Mamoru
Anderson Matthew D.
NTT DoCoMo Inc.
Oblon & Spivak, McClelland, Maier & Neustadt P.C.
Phu Sanh D.
LandOfFree
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