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Circuits, Communications and Systems, Pacific-Asia Conference on (2009)
Chengdu, China
May 16, 2009 to May 17, 2009
ISBN: 978-0-7695-3614-9
pp: 111-114
In wavelength-routed optical networks, routing and wavelength assignment (RWA) can be implemented in a dynamic and distributed way. During the distributed restoration process after a failure occurs, the concurrent reservation attempts from different original nodes may lead to collisions because they select the same wavelength with a large possibility, resulting in high recovery blocking probabilities. This paper presents a contention avoidance mechanism to improve restoration performance. With the adaptive wavelength assignment method, reservation contentions between adjacent nodes are reduced significantly and higher recovery ratio is achieved.
optical networks, restoration, routing and wavelength assignment

Y. Li, X. Zheng, H. Zhang and Y. Cao, "Adaptive Wavelength Assignment Scheme for Distributed Path Restoration in Optical Networks," 2009 Pacific-Asia Conference on Circuits, Communications and Systems (PACCS 2009)(PACCS), Chengdu, 2009, pp. 111-114.
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