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Proceedings Paper

Novel distributed control protocol in dynamic wavelength-routed optical networks
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Paper Abstract

This paper solves the problem of path selection for WDM mesh networks with a special focus on the implementation in middle-sized networks, such as metropolitan-area networks (MANs). A novel routing and signaling protocol, called Asynchronous Criticality Avoidance (ACA), is proposed to improve the network performance. With the ACA protocol, a specific set of wavelength channels are defined as critical links between a node pair according to dynamic link-state. Criticality information is defined as the critical links and the associated information, which is coordinated and disseminated by each source node to every other source node as an inter-arrival planning. Routing and wavelength assignment is performed along with the criticality avoidance mechanism, in which path selection process is devised to take the criticality information into consideration. Simulation is conducted in 22- and 30-node networks to examine the proposed approach. The simulation results show that the ACA protocol significantly outperforms the Fixed-Path Least-Congested (FPLC) scheme under the Fixed Alternate Routing architecture with various patterns of alternate paths assigned to each source-destination pair in the networks.

Paper Details

Date Published: 3 July 2002
PDF: 8 pages
Proc. SPIE 4874, OptiComm 2002: Optical Networking and Communications, (3 July 2002); doi: 10.1117/12.475307
Show Author Affiliations
Pin-Han Ho, Queen's Univ. at Kingston (Canada)
Hussein T. Mouftah, Queen's Univ. at Kingston (Canada)


Published in SPIE Proceedings Vol. 4874:
OptiComm 2002: Optical Networking and Communications
Nasir Ghani; Krishna M. Sivalingam, Editor(s)

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