Research from X.N. Zhang and Co-Researchers Yields New Findings on Photonics.(Report)

"Presently, backbone data networks are converging toward a typical two-layer architecture of an IP/MPLS layer over an optical layer. In this paper, we study the problem of maximizing a utility function for an Internet service provider (ISP) of a two-layer mesh networks and propose an efficient decomposition method based on Lagrange relaxation," investigators in Chengdu, People's Republic of China report.

"Differing from previous works on two-layer mesh networks, our proposed decomposition method decomposes an original two-layer mathematic optimization problem, respectively, into an IP/MPLS-layer and an optical-layer optimization problem by slacking the constraints between the two layers. This decomposition method enables to control the trade-off between running time and quality of the feasible solution," wrote X.N. Zhang and colleagues.

The researchers concluded: "Numerical results for a variety of networks indicate that our proposed decomposition method is attractive to quickly find near optimal solutions."

Zhang and colleagues published their study in Photonic Network Communications (Two-layer mesh network optimization based on inter-layer decomposition. Photonic Network Communications, 2011;21(3):310-320).

For additional information, contact X.N. Zhang, University of Electrical Science & Technology China, Key Laboratory Broadband Optical Transmiss & Communicable Networks, Chengdu 610054, People's Republic of China.

The publisher of the journal Photonic Network Communications can be contacted at: Springer, 233 Spring St., New York, NY 10013, USA.

Keywords: City:Chengdu, Country:People's Republic of China, Region:Asia, Network Communications, Networks, Photonics

This article was prepared by Network Weekly News editors from staff and other reports. Copyright 2011, Network Weekly News via VerticalNews.com.