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This paper presents a tabu search meta-heuristic to solve the static manycast routing and wavelength assignment problem (MA-RWA). The problem is to route a set of manycast requests over a wavelength-routed WDM network such that the number of wavelengths required is minimized. We present the details of a tabu search meta-heuristic for this problem and compare it to two other MA-RWA heuristics called...
We investigate the sequential task anycast scheduling problem (STAS) for grid applications in an optical burst switched network. In STAS, the subtasks of a given request have sequential dependency and must be processed in order. Each node in the network provides a set of services and each subtask may demand a different type of service. The problem is to find an ordered set of nodes that can minimize...
In this paper we propose the use of bit error rate (BER) as a differentiation of service parameter for connection provisioning in optical wavelength division multiplexing (WDM) networks. This is achieved through the use of impairment constraint based routing (ICBR), whereby various BER thresholds are set for accepting/blocking requests at the connection provisioning phase, depending on QoS requirements...
The efficient accommodation of sub-wavelength client flows on optical channels is a current challenge for resources use optimization in GMPLS controlled optical networks. While optical channels capacity usually exceeds 10 Gbit/s, client connections requests show finer granularity. This paper concentrates on the design and implementation of a GMPLS-controlled grooming capable transport infrastructure...
Focused all the attention on survivability schemes under the high speed, multi-service and integrated multi-domain optical networks (MDON) environment. In this paper, based on the traits which are multi-service and distributed control for optical network, we first analyze the problems and challenges posed by MDON survivability. According to the survivability need of MDON, we classify associated key...
This paper addresses both scalability and survivability issues for large optical networks by suggesting a dynamic and distributed logical partitioning technique based on shared risk groups. Simulation results verify the viability of the proposed approach.
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