Data transmission method and system, and device used therefor

Details Data transmission method and system, and device used therefor Data transmission method and system, and device used therefor

2005-12-13

2005-12-13

Phan, Man U. (Department: 2665)

Multiplex communications

Channel assignment techniques

Carrier sense multiple access

C714S758000

Reexamination Certificate

active

06975641

ABSTRACT:
A system including a central unit10, a terminal20, and a relay device30relay transmission of isochronous data effectively, in a time-sharing manner. The central unit10cyclically carries out the polling. In response to the polling, the terminal20transmits a plurality of frames. The relay device30detects that the plurality of frames transmitted from the terminal20via a transmission path40are completely received based on carrier-sensing by a carrier detecting portion308incorporated in the relay device30. The relay device30, at the time of detection, transmits frames received thereby without error to the central unit10.

REFERENCES:
patent: 4803681 (1989-02-01), Takahashi
patent: 5892759 (1999-04-01), Taketsugu
patent: 197 31 261 (1999-01-01), None
patent: 98/31139 (1998-07-01), None
Shingakugihou (IEICE Technical Report) RCS97-207, “Broadband Radio Access Integrated Network (BRAIN) in MM-Wave Band—Radio Access Protocol”, Jan., 1998, pp. 113-121.

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