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Shared-p-cycles method for design of survivable
WDM networks |
| Zhenrong ZHANG1,Lixin ZHU2,Zhengbin LI2,Anshi XU2, |
| 1.State Key Laboratory
of Advanced Optical Communication Systems & Networks, Peking University,
Beijing 530004, China；School of Computer,
Electronics and Information, Guangxi University, Nanning 100871, China; 2.State Key Laboratory
of Advanced Optical Communication Systems & Networks, Peking University,
Beijing 530004, China; |
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Abstract In future high-capacity wavelength division multiplexed (WDM) optical networks, the failure of a network component such as a fiber link can lead to severe disruption in the networks’ traffic. Hence, it is imperatively important to provide fast and full protection in WDM optical networks. In this paper, we propose a new approach, called shared preconfigured protection cycles (shared-p-cycles), for the design of survivable WDM networks. We develop an integer linear program (ILP) formulation to solve the problem of shared-p-cycles design for WDM networks with and without wavelength conversion. Numerical results show that the shared-p-cycles design is more efficient in the use of spare capacity and requires much less spare capacity than the conventional p-cycles design.
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| Keywords
wavelength division multiplexed (WDM) optical networks
integer linear program (ILP)
p-cycle
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Issue Date: 05 December 2009
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