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25 January 2012 A novel load-balanced fixed routing (LBFR) algorithm for wavelength routed optical networks
Gangxiang Shen, Yongcheng Li, Limei Peng
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Proceedings Volume 8331, Photonics and Optoelectronics Meetings (POEM) 2011: Optical Communication Systems and Networking; 833109 (2012) https://doi.org/10.1117/12.918394
Event: Photonics and Optoelectronics Meetings 2011, 2011, Wuhan, China
Abstract
In the wavelength-routed optical transport networks, fixed shortest path routing is one of major lightpath service provisioning strategies, which shows simplicity in network control and operation. Specifically, once a shortest route is found for a node pair, the route is always used for any future lightpath service provisioning, which therefore does not require network control and management system to maintain any active network-wide link state database. On the other hand, the fixed shortest path routing strategy suffers from the disadvantage of unbalanced network traffic load distribution and network congestion because it keeps on employing the same fixed shortest route between each pair of nodes. To avoid the network congestion and meanwhile retain the operational simplicity, in this study we develop a Load-Balanced Fixed Routing (LBFR) algorithm. Through a training process based on a forecasted network traffic load matrix, the proposed algorithm finds a fixed (or few) route(s) for each node pair and employs the fixed route(s) for lightpath service provisioning. Different from the fixed shortest path routes between node pairs, these routes can well balance traffic load within the network when they are used for lightpath service provisioning. Compared to the traditional fixed shortest path routing algorithm, the LBFR algorithm can achieve much better lightpath blocking performance according to our simulation and analytical studies. Moreover, the performance improvement is more significant with the increase of network nodal degree.
© (2012) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
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Gangxiang Shen, Yongcheng Li, and Limei Peng "A novel load-balanced fixed routing (LBFR) algorithm for wavelength routed optical networks", Proc. SPIE 8331, Photonics and Optoelectronics Meetings (POEM) 2011: Optical Communication Systems and Networking, 833109 (25 January 2012); https://doi.org/10.1117/12.918394
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KEYWORDS
Optical networks
Control systems
Computer simulations
Algorithm development
Performance modeling
Databases
Optical communications
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