Chinese Optics Letters, 2005, 3 (3): 03143, Published Online: Jun. 6, 2006
Dynamic protected lightpath provisioning in mesh WDM networks
Abstract
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.
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.