Multiplex communications – Pathfinding or routing
Patent
1996-12-03
1999-08-03
Ton, Dang
Multiplex communications
Pathfinding or routing
370238, 370252, 370395, H04L 1228
Patent
active
059334258
ABSTRACT:
In a connection-oriented network where ATM nodes are interconnected by links, periodically updated link status information of the network is stored in a database to indicate resource constraints of the network links. Responsive to a connection request specifying multiple QOS parameters, a first path to a destination is selected and a first signaling message is transmitted containing routing data of the first path toward the destination if resource constraints of the first path satisfy all the specified QOS parameters. If the transmission of the first signaling message is unsuccessful or the resource constraints of the first path do not satisfy all the specified QOS parameters, then a second path to the destination is selected according to contents of the database that correspond to one of the specified QOS parameters, and a second signaling message containing routing data of the second path is transmitted toward the destination.
REFERENCES:
patent: 5042027 (1991-08-01), Takase et al.
patent: 5115429 (1992-05-01), Hluchyj et al.
patent: 5210740 (1993-05-01), Anzai et al.
patent: 5649108 (1997-07-01), Spiegel et al.
NEC Corporation
Sam Phirin
Ton Dang
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