Broadband ring communication system and access control method

Details Broadband ring communication system and access control method Broadband ring communication system and access control method

1991-05-06

1992-08-18

Olms, Douglas W.

Multiplex communications

Wide area network

Packet switching

370 8512, 370 856, 34082505, H04J 300

Patent

active

051405873

ABSTRACT:
For a ring communication system, an access mechanism is provided and supported by medium access control means so that different kinds of traffic are optimally accommodated. Signaling information (SG) and isochronous data (IS) keep their position in a synchronous time raster while propagating on the ring, whereas variable-length data frames (DF A, DF B, DF C, DF D) can be relatively shifted in their position during propagation on the ring, to allow for the insertion of additional variable-length data frames (DF E, DF F), thus giving to all stations attached to the ring a fair chance for transmitting such data frames (DF). The data frames are partitioned into slot-size segments, and the mechanism guarantees that the segments of any data frame will not be interrupted by segments of another such data frame.

REFERENCES:
patent: 4587650 (1986-05-01), Bell
patent: 4916690 (1990-04-01), Barri
patent: 5010332 (1991-04-01), Egami
patent: 5043981 (1991-08-01), Firoozmand et al.

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