Wireless communication network system

Details Wireless communication network system Wireless communication network system

1994-07-01

1997-06-17

Ton, Dang

Multiplex communications

Communication over free space

Combining or distributing information via time channels

370445, 359136, H04L 12413

Patent

active

056403909

ABSTRACT:
A wireless communication network system includes a communication controller, and a plurality of terminal devices which can communicate with the communication controller by wireless. The communication controller includes a first section for detecting absence of a received signal from any of the terminal devices, and a second section responsive to an output signal of the first section for periodically generating a nonbusy signal, which can be discriminated from another signal transmitted from the communication controller, in the absence of the received signal. Each of the terminal devices includes a third section for detecting the nonbusy signal, and a fourth section responsive to an output signal of the third section for permitting transmission from the terminal device after the nonbusy signal is received by the third section.

REFERENCES:
patent: 3728681 (1973-04-01), Fuller et al.
patent: 4689619 (1987-08-01), O'Brien, Jr.
patent: 5297144 (1994-03-01), Gilbert et al.
patent: 5329531 (1994-07-01), Diepstraten et al.
patent: 5369639 (1994-11-01), Kammerman et al.
patent: 5371739 (1994-12-01), Knapczyk
patent: 5373503 (1994-12-01), Chen
patent: 5379290 (1995-01-01), Kleijne

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