Method and system for implementing sub-tokens on a token ring ne

Details Method and system for implementing sub-tokens on a token ring ne Method and system for implementing sub-tokens on a token ring ne

1994-12-22

1996-06-18

Olms, Douglas W.

Multiplex communications

Wide area network

Packet switching

370 8512, 39518202, H04L 12427

Patent

active

055285945

ABSTRACT:
A method and system for increasing performance on a standard dual ring token ring by generating one or more sub-tokens so that multiple data transmissions can occur concurrently. Upon receipt of a data frame from the token holder, interface logic enables a receiver to generate a sub-token frame. The sub-token is used to notify the next downstream station that it may transmit data frames to other downstream stations. In this way, a second data transmission path can be established between downstream stations. In a similar manner, the receiver of a data frame sent by a sub-token owner will generate a sub-token frame for use by the next downstream station when its data arrives. Each sub-token is used to create a new sub-ring, thus allowing for concurrent data transmissions. Each new sub-ring must obey token ring protocol to avoid data collisions.

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