Multiplex communications – Wide area network – Packet switching
Patent
1988-08-26
1991-03-26
Olms, Douglas W.
Multiplex communications
Wide area network
Packet switching
370 953, H04J 326
Patent
active
050035347
ABSTRACT:
A link utilization control mechanism for a demand assignment satellite communication network employs a modified point-to-point communications protocol (X.25) in order to simulate point-to-point communication ports and thereby interface what is effectively a multidrop network with point-to-point landlink communication resources. Through an acknowledgement reservation mecahsnism the return link channel is subdivided into interleaved data and (preassigned) acknowledgement time slots, in order to substantially obviate ovrhead and throughput penalties encountered in the use of large data packets to transmit reduced size acknowledgement messages. In addition, the normal contention mode of operation of the return link is augmented with a data time slot reservation mechanism through which, during periods of increased message input density at a remote station, transmission throughput is facilitated, so that congestion at the remote station is reduced.
REFERENCES:
patent: 4736371 (1988-04-01), Tejima et al.
patent: 4774707 (1988-09-01), Raychaudhur
patent: 4775974 (1988-10-01), Kobayashi
patent: 4803681 (1989-02-01), Takahashi
Gerhardt Ed
Highsmith William R.
Kutchan Michael
Marcelo Melvin
Olms Douglas W.
Scientific Atlanta
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