Virtual trees routing protocol for an ATM-based mobile network

Details Virtual trees routing protocol for an ATM-based mobile network Virtual trees routing protocol for an ATM-based mobile network

1996-05-17

1999-02-16

Vu, Huy D.

Multiplex communications

Network configuration determination

Using a particular learning algorithm or technique

370408, 370409, 370399, H04L 1244

Patent

active

058727736

ABSTRACT:
The present invention is a system and method for routing cells in a wireless communications network, wherein the communications network includes a plurality of switching nodes and the cells are routed according to destination-rooted virtual path identifier (VPI) trees. The present invention includes a routing protocol for determining preestablished VPI trees rooted at each destination node. The routing protocol manages the routes of these trees, while ensuring that there are at least two VPI trees from each source to each destination for reliability reasons, and that each destination node has multiple VPI trees for load-balancing reasons. The routing protocol includes an off-line procedure for the determination of the initial VPI trees. In order to handle changes in network traffic and conditions, the routing protocol updates the routes of the VPI trees in a dynamic and distributed fashion. These update procedures are triggered by congestion, link
ode failures and link
ode additions.

REFERENCES:
patent: 5623495 (1997-04-01), Eng et al.
"On Routing in ATM Networks", pp. 50-98. Date unknown.
"A wireless broadband ad-hoc ATM local-area network", J.C. Baltzer AG, Science Publishers, (1995), pp. 161-174.
"Routing in Multihop Packet Switching Networks: Gb/s Challenge", IEEE Network, May/Jun. 1995, pp. 38-61.
"The Sink Tree Paradigm: Connectionless Traffic Support on ATM LANs", IEEE, by R. Cohen et al., 1994, pp. 821-828.
ATM Forum 94-0471R9 PNNI Draft Specification, PNNI SWG, by D. Dykeman et al., pp. 1-182. Date unknown.

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