Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
6859210 | International Journal of Electrical Power & Energy Systems | 2018 | 9 Pages |
Abstract
In order to solve the problem of path protection for multicast services and improve the wavelength utilization ratio in substation communication networks (SCN), a p-cycle based protection scheme with cycle multiplexing and capacity balance (PBCM-CB) is presented in this paper to protect the multicast services under single link/node failure scenario. By analyzing the multicast services in SCN, the classical Prim algorithm is improved to generate optimized multicast light-trees corresponding to multicast requests. Based on this, the heuristic p-cycle generation algorithm is designed to connect the destination nodes of the multicast tree to a cycle to protect the entire tree. Aiming to improve utilization efficiency of the protection resource, the multiplexing conditions of the p-cycles are studied, and by multiplexing the existing p-cycles configured in the network, the wavelength utilization ratio is raised. Besides, in order to decrease the blocking probability (BP) of the network, a capacity balance strategy is adopted to generate the multicast trees and p-cycles. Simulation results demonstrate that the proposed algorithm can significantly reduce the redundancy and blocking probability of SCN compared with the existing flow p-cycle protection schemes.
Related Topics
Physical Sciences and Engineering
Computer Science
Artificial Intelligence
Authors
Bin Li, Chao Lu, Bing Qi, Yi Sun, Dezhi Li, Songsong Chen, Bin Yang,