Multiplex communications – Wide area network – Packet switching
Patent
1993-04-05
1995-03-07
Hsu, Alpus
Multiplex communications
Wide area network
Packet switching
370 951, 370 953, 34082544, 379 58, 455 541, 455 62, 455343, H04B 7212, H04B 726, H04J 316, H04J 400
Patent
active
053964969
ABSTRACT:
A mobile radio communication system includes a plurality of base stations connected to a network through wire lines, and a plurality of mobile stations connected to the base stations through radio channels. The base and mobile stations share a plurality of radio frequencies and transmit at least one transmission signal at one of the shared radio frequencies. The transmission signal is arranged into time frames each having a plurality of time-division multiplexed slots. The base and mobile stations both include a control circuit having means for detecting unused time slots within the transmission signal and means for selecting one of the unused time slots. A radio channel establishing circuit establishes a channel between the mobile radio communication apparatus and the base station in accordance with the selected time slot.
REFERENCES:
patent: 4504946 (1985-03-01), Raychaudhuri
patent: 4802201 (1989-01-01), Yoshizawa et al.
patent: 5081704 (1992-01-01), Umeda et al.
patent: 5086452 (1992-02-01), Ito et al.
patent: 5134615 (1992-07-01), Freeburg et al.
patent: 5210752 (1993-05-01), Ito et al.
Ito Koichi
Tanaka Masayuki
Umemoto Yuji
Hsu Alpus
Kabushiki Kaisha Toshiba
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