Traffic flow control and call set-up in multi-hop broadband netw

Details Traffic flow control and call set-up in multi-hop broadband netw Traffic flow control and call set-up in multi-hop broadband netw

1990-08-27

1992-07-07

Safourek, Benedict V.

Multiplex communications

Wide area network

Packet switching

370 856, 370 941, H04Q 1104

Patent

active

051289326

ABSTRACT:
A methodology is disclosed for traffic control administered locally at each individual node in a packet network. Packet level controls at a node pertain to whether to admit a new packet into the network and whether to momentarily detain passing-through packets. The nodes apply the "back-pressure" of congestion on one another and thereby cooperate to smooth traffic and alleviate the accumulation of packets at any single node. The decision process in packet level control involves two basic operations. First, the address of the packet is translated into a binary word via a static routing table and then, secondly, the binary word and control data representative of dynamic traffic information are operated on logically; traffic control decisions, such as detain a passing-through packet or permit entry of a packet into the network, are based primarily on the result of the logical operation. In setting-up a real-time call, a stream, of scout packets representative of the real-time packets is screened for entry into the network as influx packets. If all scout packets are permitted to enter the network in a given time period, then the real-time data packets are cleared for propagation.

REFERENCES:
patent: 4020052 (1991-05-01), DePrycker et al.
patent: 4740954 (1988-04-01), Cotton et al.
patent: 4769810 (1988-09-01), Eckberg, Jr. et al.
patent: 4953157 (1990-08-01), Franklin et al.
patent: 4979118 (1990-12-01), Kheradpir
patent: 5056085 (1991-10-01), Vu

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