Communication system comprising overlayed multiple-access transm

Details Communication system comprising overlayed multiple-access transm Communication system comprising overlayed multiple-access transm

1986-02-26

1988-03-15

Masinick, Michael A.

Multiplex communications

Wide area network

Packet switching

370 89, H04J 300, H04J 316

Patent

active

047317841

ABSTRACT:
In a communication system providing multiple access to transmission facilities for a plurality of stations (17, 21), two separate networks (11, 13) are provided: One is a token ring (11) on which access tokens and data are transmitted, the other is a high-speed optical fiber transmission ring (13) on which only large-volume data blocks are transmitted between particular stations (21) which are attached to both rings, but no access information. A token manager (27) in the token ring (11) provides at regular intervals particular tokens that are only used by the particular stations (21) for obtaining access to the high-speed ring (13), but also provides other tokens for regulating access to the token ring (11) for other stations (17). Special access nodes (23) are provided which allow to connect the particular stations (21) to the high-speed ring (13) without extending its length.

REFERENCES:
patent: 4501021 (1985-02-01), Weiss
patent: 4587651 (1986-05-01), Nelson et al.

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