Link utilization control mechanism for demand assignment satelli

Details Link utilization control mechanism for demand assignment satelli Link utilization control mechanism for demand assignment satelli

1991-01-11

1992-06-09

Olms, Douglas W.

Multiplex communications

Wide area network

Packet switching

370 941, 370 953, H04J 326

Patent

active

051213877

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 mechanism the return link channel is subdivided into interleaved data and (preassigned) acknowledgement time slots, in order to substantially obviate overhead 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), Raychaudhuri
patent: 4775974 (1988-10-01), Kobayashi
patent: 4803681 (1989-02-01), Takahashi
patent: 5003534 (1991-03-01), Gerhardt et al.
patent: 5012469 (1991-04-01), Sardana
"Multiple-Access Protocols for Satellite Packet Communication Networks: A Performance Comparison", Shuji Tasaka, Proceedings of the IEEE, vol. 72, No. 11, Nov. 1984, pp. 1573-1582.

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