Multiplex communications – Wide area network – Packet switching
Patent
1993-05-27
1994-11-01
Marcelo, Melvin
Multiplex communications
Wide area network
Packet switching
370 8513, 370 941, 34082552, H04J 326, H04L 1256
Patent
active
053612566
ABSTRACT:
Disclosed are a method and a system for transmitting a message or data packet from a single sender (21) to a plurality, i.e. a group of receivers, usually called multicasting, within a conventional unicast transmission network, i.e. a network basically not equipped to handle such multicast transmissions, consisting of a plurality of subnetworks (22-24). The nodes or gateways (25-29) connecting the subnetworks maintain tables of multicast receiving stations (or groups of such) and the header of each message includes information defining the groups of the addressed multicast receiving stations.
REFERENCES:
patent: 5079767 (1992-01-01), Perlman
patent: 5095480 (1992-03-01), Fenner
patent: 5138614 (1992-08-01), Baumgartner et al.
"Host Groups: A Multicast Extension for Datagram Internetworks", Ninth Data Communications Symposium, Sep. 1985, Whistler Mountain, British Columbia, Canada, pp. 172-179, by D. R. Cheriton et al.
"Multicast Support for Group Communications", Computer Networks and ISDN Systems, vol. 22, No. 3, Oct. 7, 1991, Amsterdam, Netherland, pp. 165-178, by L. H. Ngoh.
Doeringer Willibald
Dykeman Douglas
Edwards Allan K.
Pozefsky Diane P.
Sarkar Soumitra
International Business Machines - Corporation
Marcelo Melvin
Timar John J.
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