8 February 2005 A novel distributed signaling scheme for lightpath setup time optimization in dynamic wavelength-routed optical networks
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Proceedings Volume 5626, Network Architectures, Management, and Applications II; (2005); doi: 10.1117/12.573572
Event: Asia-Pacific Optical Communications, 2004, Beijing, China
Abstract
One of the challenges to dynamically set up a lightpath is to develop efficient control schemes in control as well as the management of the distributed-controlled optical networks. In networks with highly dynamic traffic loads, longer lightpath setup time may result in higher blocking probability and serious degradation of the network performance. In this paper, we propose a novel distributed signaling protocol designated as signaling with switching fabric status (SWFS). In this scheme, we consider the switch fabric configuration performing distributed signaling as well as routing and wavelength assignment. We forward the signaling request messages with available wavelength sets as well as the extra switching status for each wavelength at each node in the paths between the source-destination (S-D) pairs. The extra switching status indicates if the switch fabric should be reconfigured to provide internal port connection for specified wavelength at the node. When the signaling message reaches the destination, a wavelength with minimal reconfiguration times in the available wavelength set will be selected to shorten the connection establishment time. A distributed discrete event simulation platform has been developed to evaluate the performance of SWFS. The simulation results show that our proposed technology has the shorter setup time and lower blocking probability than the traditional non-optimization signaling technology.
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Lihua Lu, Qingji Zeng, Jimin Liu, "A novel distributed signaling scheme for lightpath setup time optimization in dynamic wavelength-routed optical networks", Proc. SPIE 5626, Network Architectures, Management, and Applications II, (8 February 2005); doi: 10.1117/12.573572; https://doi.org/10.1117/12.573572
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KEYWORDS
Switching

Switches

Optical networks

Networks

Computer simulations

Optical fibers

Wavelength division multiplexing

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