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83
Reconfiguration Algorithms Based on Meta-Heuristics for Multihop WDM Lightwave Networks
- Proc. ICC 2000, IEEE International Conference on Communications
, 2000
"... Abstract The logical configuration of a WDM network can be changed by reassigning wavelengths to tunable transceivers of nodes. In this paper, we develop reconfiguration algorithms to obtain an optimal node placement of multihop networks with regular topology. The algorithms are based on meta-heuris ..."
Abstract
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Cited by 9 (0 self)
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Abstract The logical configuration of a WDM network can be changed by reassigning wavelengths to tunable transceivers of nodes. In this paper, we develop reconfiguration algorithms to obtain an optimal node placement of multihop networks with regular topology. The algorithms are based on meta
Wavelength-routed optical networks: Linear formulation, resource budgeting tradeoffs, and a reconfiguration study
- IEEE/ACM Transactions on Networking
, 2000
"... Abstract--We present algorithms for the design of optimal virtual topologies embedded on wide-area wavelength-routed optical networks. The physical network architecture employs wavelength-conversion-enabled wavelength-routing switches (WRS) at the routing nodes, which allow the establishment of circ ..."
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Cited by 148 (4 self)
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Abstract--We present algorithms for the design of optimal virtual topologies embedded on wide-area wavelength-routed optical networks. The physical network architecture employs wavelength-conversion-enabled wavelength-routing switches (WRS) at the routing nodes, which allow the establishment
Reconfiguration Based Failure Restoration in Wavelength-routed WDM Networks
- In Proceedings of International Conference on Dependable Systems and Networks
, 2000
"... Wavelength-division multiplexed (WDM) optical networks using wavelength-routing are considered to be a potential candidate for next generation wide-area backbone networks. The key component in such networks is the lightpath network (LPN) manager. The functions of the LPN manager include setting up t ..."
Abstract
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Cited by 2 (0 self)
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the logical topology, sustaining the network by monitoring traffic and network parameters, and handling node and/or link failures. Failure handling in WDM networks is of prime importance due to the nature and volume of traffic these networks carry. Failure detection is usually achieved by exchanging control
Design method of Logical Topologies With Quality Of Reliability in WDM Networks
- J. PHOTO. NET. COMM
, 2002
"... As the bandwidth capacity of WDM networks continues to grow rapidly, traffic loss caused by a failure of network components is becoming unacceptable. To prevent such traffic loss and thus enhance network reliability, a protection method that prepares backup lightpaths for each working path is now ..."
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Cited by 3 (0 self)
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lightpath is switched to the backup lightpath. After that, we propose a heuristic algorithm that can be used to design a logical topology that satisfies the QoR requirement for every node pair. The objective is to minimize the number of wavelengths needed for a fiber in the logical topology to carry
A Modified Heuristic Approach of Logical Topology Design in WDM Optical Networks
"... This paper introduces a modified heuristic approach as a solution to the problem of routing, wavelength assignment (RWA), and traffic grooming when designing a logical topology given the network physical topology. The RWA problem is known to be the assigning of network resources (wavelengths, transm ..."
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modification to the MSHT heuristic. For a given network physical topology and traffic pattern (traffic distribution between every node pairs), the objective is to design a logical topology and a routing algorithm so as to minimize both the average packet hop distance and amount of processing at each node. Two
A Logical Topology Design with Tabu Search in IP over WDM Optical Networks
"... Abstract-Given a static traffic condition, the motivation of for logical topologic design problem in WDM networks have logical topology design in IP over WDM networks is to optimize been proposed in our previous researches. In this paper, our the network resource utilization and improve network rese ..."
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discovery method to change the logical topology of the network, several topology design fornetwork operatorsto optimizethe network. simulated annealing and genetic algorithms for logical topologic The rest parts of this paper are organized as follows: Section II design problem in WDM networks have been
Virtual Topology Reconfrigation of WDM Optical Network with Minimum Physical Node
"... This paper review the reconfiguration of high capacity WDM optical Network, messages are carried in all optical form using light paths. The set of semi-permanent light paths which are set up in the network may be viewed as a virtual topology by higher layers such as SONET, ATM and IP. Reconfiguratio ..."
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. Reconfiguration is to charge in virtual topology to meet traffic pattern in high layers. It provides a trade off between objective value and the no. of changes to the virtual topology. In another study Objective is to design the logical topology & routing Algorithm on physical topology, so as to minimize
Lightpath Management of Logical Topology With Incremental Traffic Changes for Reliable IP over WDM Networks
, 2002
"... In order to construct a reliable IP over WDM network, backup paths as well as primary paths should be embedded within a wavelength-routed topology (or logical topology). There are many researches treating a design problem of such logical topologoies. However, most of existing approaches assume that ..."
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Cited by 2 (0 self)
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In order to construct a reliable IP over WDM network, backup paths as well as primary paths should be embedded within a wavelength-routed topology (or logical topology). There are many researches treating a design problem of such logical topologoies. However, most of existing approaches assume
Efficient Routing and Wavelength Assignment for Reconfigurable WDM Networks with Wavelength Converters
, 2003
"... We consider the problem of wavelength assignment in a reconfigurable bi-directional ring network with wavelength converters. We show that for N-node P -port bidirectional rings, a minimum number of wavelengths are required to support all possible virtual topologies in a rearrangeably non-blocking ..."
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Cited by 28 (3 self)
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We consider the problem of wavelength assignment in a reconfigurable bi-directional ring network with wavelength converters. We show that for N-node P -port bidirectional rings, a minimum number of wavelengths are required to support all possible virtual topologies in a rearrangeably non
Design of Logical Topology for IP over WDM Networks: Network Performance vs. Resource Utilization
"... Abstract. We consider the problem of designing logical topologies for IP over WDM networks. One important feature of WDM networks is the reconfigurability when traffic demands change over time. However, if the network resource is not used efficiently, the reconfiguration can cause network disruption ..."
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Abstract. We consider the problem of designing logical topologies for IP over WDM networks. One important feature of WDM networks is the reconfigurability when traffic demands change over time. However, if the network resource is not used efficiently, the reconfiguration can cause network
Results 11 - 20
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