Analysis of blocking probability for distributed lightpath establishment in WDM optical networks
IEEE/ACM Transactions on Networking (TON)
A hierarchical routing approach for optical transport networks
Computer Networks: The International Journal of Computer and Telecommunications Networking - Optical networks
A flexible contention resolution scheme for QoS provisioning in optical burst switching networks
Computer Communications
A hierarchical routing approach for optical transport networks
Computer Networks: The International Journal of Computer and Telecommunications Networking - Optical networks
MMSRP: multi-wavelength Markov-based split reservation protocol for DWDM optical networks
Proceedings of the 2010 ACM Symposium on Applied Computing
ICDCN'08 Proceedings of the 9th international conference on Distributed computing and networking
Review: A comparison of wavelength reservation protocols for WDM optical networks
Journal of Network and Computer Applications
Prediction-based routing as RWA in multilayer traffic engineering
Photonic Network Communications
A protocol for piggy-backing on Markov based wavelength reservation in WDM optical networks
Optical Switching and Networking
Analyses of soft-state signaling protocols in GMPLS-Based WDM networks
International Journal of Network Management
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A problem of many distributed lightpath provisioning schemes is wavelength contention, which occurs when a connection request attempts to reserve a wavelength channel that is no longer available. This situation results from the lack of updated global link-state information at every node. In networks with highly dynamic traffic loads, wavelength contention may seriously degrade the network performance. To overcome this problem, we propose a new framework for distributed signaling and introduce a class of schemes referred to as intermediate-node initiated reservation. In the new scheme, reservations may be initiated at any set of nodes along the route; in contrast, reservations can only be initiated by the destination node in the classic destination initiated reservation (DIR) scheme. As a result, the possibility of having outdated information due to propagation delay is significantly lowered. Specifically, we consider two schemes within this framework, for networks with no wavelength conversion and for networks with sparse wavelength conversion, respectively. Theoretical and simulation results show that, compared with the classic DIR scheme, the new schemes can significantly improve the network blocking performance. The accuracy of the analytical models is also confirmed by extensive numerical simulations.