Chinese Optics Letters, Volume. 3, Issue 3, 03143(2005)
Dynamic protected lightpath provisioning in mesh WDM networks
This paper investigates the problem of dynamic protected lightpath services provisioning in optical mesh networks employing wavelength division multiplexing (WDM). A variety of schemes for dynamic protected services provisioning have been proposed, supporting a range of tradeoffs among restoration speed, capacity efficiency, and scalability. In this paper, we propose a novel scheme, called p-cycles-based maximum protected working capacity envelope (PC-MPWCE), which can offer an attractive combination of features: ring-like speed, mesh-like capacity efficiency, and good scalability. To evaluate the performance of PC-MPWCE, we compare it via simulation with 1+1 automatic protection switching (APS) and two well-known shared backup path protection (SBPP) on NSFNET. Our simulation results show that PC-MPWCE can achieve much better blocking performance than 1+1 APS, and perform the similar blocking performance and capacity efficiency as SBPP.
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Guolong Zhu, Qingji Zeng, Tian Xu, Tong Ye, Junjie Yang. Dynamic protected lightpath provisioning in mesh WDM networks[J]. Chinese Optics Letters, 2005, 3(3): 03143