Multiplex communications – Wide area network – Packet switching
Patent
1986-09-25
1987-11-17
Safourek, Benedict V.
Multiplex communications
Wide area network
Packet switching
370 94, 34082507, H04J 300, H04J 324
Patent
active
047078294
ABSTRACT:
This invention relates to an efficient CSMA/CD-based protocol for a local area network using an unidirectional global bus architecture, in which a ready station captures the bus for one packet time only if no other stations to its left transmit along with it. A modified version of the protocol provides a fairer access to the bus. This new scheme is a variable priority structure in which each station has a priority that changes dynamically with the state of the system. This is a contention scheme that behaves like a generalized and very flexible reservation protocol. A performance analysis of both versions of the protocol results in channel efficiency and transmission delay figures that are superior to those of the leading bus protocols.
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Miller Jerry A.
Racal Data Communications Inc.
Safourek Benedict V.
Scutch III Frank M.
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