At&t Intellectual Property I, L.p.

Chris Dailey

Angela L Chiu

Robert Duncan Doverspike

Guangzhi Li

Dongmei Wang

Dahai Xu

Monica Naukam Gerhardstein

Dah-Min David Hwang

A method and apparatus for providing a route recommendation are disclosed. For example, the method obtains network topology information, wherein the network topology information comprises a plurality of underlying subnetwork types for a network. The method creates a cost model for the network, and receives a request from a user for a connection to be supported by the network. The method provides the route recommendation for supporting the connection by applying the cost model.

Method and apparatus for providing a route recommendation

Systems and methods are described that provide a two-step, physically-diverse optical routing. A diverse routing is formulated using Integer Linear Programming (ILP) to find feasible routes having a minimum estimated cost, and post-processing the feasible routes on an auxiliary cost graph to optimize regenerator and terminal Optical Transponder (OT) placement and wavelength assignment.

Physically-diverse routing in heterogeneous optical networks

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Matthews, NC, United States of America

Chris Dailey