Polynomial time approximation algorithms for multi-constrained QoS routing
IEEE/ACM Transactions on Networking (TON)
Quality Enhancement in p-Cycles Using Optimized Restoration Path (ORP) Algorithm
ARTCOM '09 Proceedings of the 2009 International Conference on Advances in Recent Technologies in Communication and Computing
A Topology Aggregation Model for Survivability in Multi-Domain Optical Networks Using p-Cycles
NPC '09 Proceedings of the 2009 Sixth IFIP International Conference on Network and Parallel Computing
Dynamic establishment of restorable connections using p-cycle protection in WDM networks
Optical Switching and Networking
Building reliable MPLS networks using a path protection mechanism
IEEE Communications Magazine
Extending the p-cycle concept to path segment protection for span and node failure recovery
IEEE Journal on Selected Areas in Communications
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The p-cycle design problem has been extensively studied because it can provide both ring-like fast self-protection speed and spare capacity efficiency of path protection scheme. However, p-cycle provisioning for dynamic traffic has not been fully addressed. Most related works have not considered link capacity in the construction of p-cycles, which may cause problems in practice because the protection paths may not have enough backup bandwidth. In this paper, with the consideration of link capacity, we present a sufficient and necessary condition that guarantees p-cycles for providing enough protection bandwidth. Based on this condition, we propose an effective solution to provide connections for dynamic requests with the property that each link used for a connection is protected by a p-cycle. Simulation results show that our dynamic p-cycle provisioning solution outperforms the traditional path protection scheme. Copyright © 2012 John Wiley & Sons, Ltd. (In this paper, we presented a necessary and sufficient condition for constructing a p-cycle with link capacity consideration, to guarantee that each link on the connection path is p-cycle protected. Simulation results demonstrated that our p-cycle provisioning scheme is comparable with traditional path protection scheme.)