Multiplex communications – Wide area network – Packet switching
Patent
1994-03-24
1995-07-11
Olms, Douglas W.
Multiplex communications
Wide area network
Packet switching
370 941, 371 377, H04J 314
Patent
active
054327873
ABSTRACT:
A packet communication system transmits a stream of L data packets with at least one parity packet transmitted as an L+1.sup.th packet. The parity packet comprises at least, N data segments, each ith data segment being the modulo-2 sum of all identically positioned data segments in the stream of L packets. A node includes adaptive packet stream transmission apparatus which comprises a packet queue for holding a series of packets ready for transmission to a destination node. The adaptive packet stream transmission mechanism further includes modulo-2 sum circuitry for deriving a parity packet for each L transmitted data packets. Transmission control circuitry selectively enables transmission of a parity packet after each L data packets have been transmitted. A processor in the node controls the transmission control circuitry to vary the value of L in accordance with a determined network metric. The network metric may indicate a level of network congestion, with the processor increasing the value of L if the network metric manifests a lessened network congestion, and vice versa. The processor is also adapted to vary the value of L in accordance with a data error rate metric.
REFERENCES:
patent: 3885105 (1975-05-01), Hildenbrand
patent: 4377862 (1983-03-01), Koford et al.
patent: 4447902 (1984-05-01), Wilkinson
patent: 4507782 (1985-03-01), Kunimasa et al.
patent: 4599722 (1986-07-01), Mortimer
patent: 4769818 (1988-09-01), Mortimer
patent: 4888767 (1989-12-01), Furuya et al.
patent: 5130992 (1992-07-01), Frey, Jr. et al.
"Packet Video and Its Integration into the Network Architectur", IEEE Journal on Selected Areas in Communications, vol. 7, No. 5, Jun. 1989.
"Packet Recovery in High-Speed Networks Using Coding and Buffer Management" pp. 124-131 May 1990.
Loral Aerospace Corporation
Olms Douglas W.
Vu Huy D.
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