Method and system for bidirectionally transmitting data

Details Method and system for bidirectionally transmitting data Method and system for bidirectionally transmitting data

1987-05-28

1989-06-20

Griffin, Robert L.

Multiplex communications

Wide area network

Packet switching

370 29, H04B 320, H04B 156, H04L 516

Patent

active

048415219

ABSTRACT:
A method and a system for bidirectional transmission/reception of data between two terminal stations, in which each transmission period is divided into a plurality of first time sections for relatively low speed data transmission and at least one second time section for relatively high speed data transmission, the direction of transmission between the terminal stations being predetermined in each of the first time sections, while the direction of transmission between the terminal stations is reversible in each of the second time sections, each second time section being preceded by one of the first time sections. Transmission of information data and control data is performed from one to the other terminal station in a predetermined direction in each first time section, and the direction of data transmission between the terminal stations in the next second time section is determined on the basis of control data contained in the relatively low speed data transmission.

REFERENCES:
patent: 3956589 (1976-05-01), Weathers et al.
patent: 4630257 (1986-12-01), White
patent: 4644525 (1987-02-01), Ellis et al.
Siemens, Siemens Transdaten, Datenubertragunsprozeduren SuW 55774, 471.2,0 von 4/71 S. 1-21 & English Translation of pp. 5-13.
Haruo Ogiwara, Yasukazu Terada: Design Philosophy and Hardware Implementation for Digital Subscriber Loops, In; IEEE Transactions on Communication, vol. COM-30, No. 9, Sep. 1982, S. 2057-2065.

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