Design of survivable hybrid wireless-optical broadband-access network

Authors:
Taiming Feng;Lu Ruan
Affiliations:
Department of Computer Science, Iowa State University, Ames, IA;Department of Computer Science, Iowa State University, Ames, IA
Venue:
ICC'09 Proceedings of the 2009 IEEE international conference on Communications
Year:
2009

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Abstract

The hybrid wireless-optical broadband-access network (WOBAN) is a promising architecture for access networks. Although the front-end wireless mesh networks in a WOBAN are self-healing, the back-end passive optical networks (PONs) do not have survivability due to their tree topology. We propose a costeffective protection method for WOBAN that deals with network element failures in the optical part of WOBAN. We define the maximum protection with minimum cost (MPMC) problem and show that the problem can be converted to the minimum cost maximum flow (MCMF) problem. We also present an ILP model for the MCMF problem. Numerical results are reported for applying our algorithm to obtain the optimal solutions for different instances of the MPMC problem.