Multiplex communications – Communication over free space – Having a plurality of contiguous regions served by...
Reexamination Certificate
2008-01-15
2008-01-15
Nguyen, Duc M. (Department: 2618)
Multiplex communications
Communication over free space
Having a plurality of contiguous regions served by...
C370S338000, C370S347000, C370S350000, C455S068000, C455S502000, C455S522000
Reexamination Certificate
active
07319684
ABSTRACT:
A system and method are provided for wireless communication. In one example, a wireless communication system that enhances total system throughput is provided. The system performs parallel data transmission from a plurality of access points to a plurality of user terminals. On terminals with power control function, their transmit power can be set to minimize interference. The wireless communication system comprises a management server which performs centralized management of time of access-point-to-terminal packet transmission, access points, and user terminals that perform data transmission, according to transmission time control information from the management server. Transmit queues for measuring downlink traffic and receive queues for measuring uplink traffic are provided on the access points or the management server. The system determines uplink and downlink periods from the transmit and receive queue lengths. The system also controls the access points and user terminals to transmit for the determined periods. Consequently, packet collision due to transmission from a terminal that interferes with neighboring terminals is eliminated. Thus, system throughput is enhanced.
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Ishifuji Tomoaki
Tamaki Tsuyoshi
Uta Takaki
Yano Takashi
A. Marquez, Esq. Juan Carlos
Fisher Esq. Stanley P.
Hitachi , Ltd.
Nguyen Duc M.
Reed Smith LLP
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