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Path-based routing provisioning with mixed shared protection in WDM mesh networks

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4 Author(s)
Lei Guo ; Key Lab of Broadband Opt. Fiber Transmission & Commun. Networks, Univ. of Electron. Sci. & Technol. of China, Chengdu ; Jin Cao ; Hongfang Yu ; Lemin Li

In this paper, the authors focus on studying the problem of survivable routing provisioning to prevent single link failure in wavelength-division-multiplexing (WDM) mesh networks, and propose a novel protection scheme called mixed shared path protection (MSPP). With MSPP, the authors define three types of resources: 1) primary resources that can be used by primary paths; 2) spare resources that can be shared by backup paths; and 3) mixed resources that can be shared by both the primary and the backup paths. In the proposed protection scheme, each connection is assigned a primary path and a link disjoint backup path. Differing from pervious protection schemes, MSPP allows some primary paths and backup paths to share the common mixed resources if the corresponding constraints can be satisfied. In this paper, the authors consider three types of path-based protection schemes, i.e., dedicated path protection (DPP), shared path protection (SPP), and MSPP, and evaluate their performance for both the static and the dynamic provisioning problems. Simulation results show that MSPP outperforms DPP and SPP

Published in:

Lightwave Technology, Journal of  (Volume:24 ,  Issue: 3 )