Adaptation in natural and artificial systems
Adaptation in natural and artificial systems
Some principles for designing a wide-area WDM optical network
IEEE/ACM Transactions on Networking (TON)
Optical networks: a practical perspective
Optical networks: a practical perspective
IEEE/ACM Transactions on Networking (TON)
Reconfiguration Based Failure Restoration in Wavelength-Routed WDM Networks
DSN '00 Proceedings of the 2000 International Conference on Dependable Systems and Networks (formerly FTCS-30 and DCCA-8)
Virtual-topology adaptation for WDM mesh networks under dynamic traffic
IEEE/ACM Transactions on Networking (TON)
On the reconfigurability of single-hub WDM ring networks
IEEE/ACM Transactions on Networking (TON)
Virtual topology reconfiguration in IP/WDM optical ring networks
Computer Communications
Policy-driven automated reconfiguration for performance management in WDM optical networks
IEEE Communications Magazine
Design of logical topologies for wavelength-routed optical networks
IEEE Journal on Selected Areas in Communications
A Tabu Search algorithm for dynamic routing in ATM cell-switching networks
Applied Soft Computing
Virtual topology transition sequence problem in WDM networks with FIPP p-cycles protection
Photonic Network Communications
Forward-Looking WDM Network Reconfiguration with Per-Link Congestion Control
Journal of Network and Systems Management
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Wavelength-division multiplexing (WDM) technology has emerged as a promising technology for backbone networks. The set of all-optical communication channels (lightpaths) in the optical layer defines the virtual topology for the upper layer applications. Since the traffic demand of upper layer applications fluctuates from time to time, it is required to reconfigure the underlying virtual topology in the optical layer accordingly. However, the reconfiguration for the virtual topology is reluctantly disruptive to the network since some lightpaths should be torn down and some traffic has to be buffered or rerouted during the reconfiguration process. Therefore, it needs to have an efficient transition method to shift the current virtual topology to the new one so as to minimize the effect of the reconfiguration on the upper layer traffic. In this paper, the WDM virtual topology configuration transition problem (WVTCTP) which minimizes the average weighted hop distance is studied. Since the WVTCTP is NP-hard, a genetic algorithm (GA) is proposed to solve it. Simulated results show that the proposed GA can get better performance than heuristic, simulated annealing, and iterative improving methods.