Lucent Technologies Inc.

Alcatel-lucent USA Inc.

Eric Bouillet

Kajamalai Gopalaswamy Ramakrishnan

Iraj Saniee

Debasis Mitra

Gang Liu

A procedure for designing WDM optical networks provides both working circuits and protection circuits for carrying traffic demands between node pairs. The protection circuits are activated for the purpose of network recovery in case of a fault on a working circuit. Each protection circuit is link-disjoint, and preferably node-disjoint, from its corresponding working circuit. The network is subdivided into logically defined rings, such that each working and protection circuit lies on one or more of the rings. In particular embodiments of the invention, the joint routing of circuits is carried out so as to minimize the total length of the working and protection circuits according to a length that includes a weight for each link. The weight is selected to promote the efficient packing of optical fibers with wavelength channels.

Method for WDM optical networks including alternate routes for fault recovery

Disclosed are network management procedures that apply measurements of traffic load to achieve greater efficiency in the operation of the network. In a method for deciding whether to route an incoming call on a selected potential service route, the potential service route is treated preferentially if each of its links has available capacity that is more than sufficient by a specified margin. In a method for computing billing revenues, the non-compliance of the network service provider with contracted requirements for carried load causes a revenue penalty to be exacted for lost bandwidth.

Method for controlling the disposition of an incoming call based on the loading status of a route and on a test of each link along the route

Design method for WDM optical networks including alternate routes for fault recovery

Measurement-based management method for packet communication networks

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Eatontown, NJ, United States of America

Eric Bouillet