Ring shaped digital communication system and method for accessin

Details Ring shaped digital communication system and method for accessin Ring shaped digital communication system and method for accessin

1986-07-07

1988-07-05

Olms, Douglas W.

Multiplex communications

Wide area network

Packet switching

370 89, H04J 300

Patent

active

047559918

ABSTRACT:
A ring-shaped TDM digital communication system and method for enabling stations connected thereto to obtain access to a common message channel available for all of the stations. Access is unambiguously determined by an arbitration procedure which selects the station which obtains access to the message channel and excludes all other stations. Such message channel is also used for the arbitration procedure, which is based on recognizing the channel as being unoccupied if the value of the information in a time slot field thereon remains the same in successive cycles around the ring of a TDM frame comprising such field. The messages which are transmitted are structured so that error detection and correction, addressing, congestion indication, etc., can easily be included.

REFERENCES:
patent: 4553234 (1985-11-01), Brandsma et al.
patent: 4566098 (1986-01-01), Gammage et al.
patent: 4596013 (1986-01-01), Tashiro et al.

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