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Up to now, extensive research has been done on link failure recovery of optical multicast protection, but rarely for node failure recovery. To deal with the severe impact of node failures, we have recently developed two p-cycle based optical multicast protection approaches for 100% combined node and link failure recovery. This paper reviews our recent work on the p-cycle based multicast protection...
The extension of the p-cycle concept to tree protection enables p-cycles to protect the multicast traffic for combined link and node failure recovery. In this paper, we present an efficiency-score based heuristic algorithm of p-cycle based tree protection (ESHT). Simulation results show that the capacity efficiency of ESHT is close to that of optimal path pair (OPP) algorithm, while the blocking performance...
We propose an efficiency-score based heuristic algorithm (ESHT) for p-cycle based multicast tree protection. Results show that the capacity-efficiency of ESHT is close to that of ILP-based algorithms, but with much reduced computational time.
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