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Hierarchical QoS Routing in Next Generation Optical Networks

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4 Author(s)
Ronghui Hou ; State Key Lab. of ISN, Xidian Univ., Xi''an, China ; King-Shan Lui ; Baker, F. ; Jiandong Li

In this paper, we study the problem of inter-domain routing with two additive QoS constraints in hierarchical optical networks. We develop an inter-domain routing protocol that (1) identifies the QoS supported by the paths, (2) selects an inter-domain path that satisfies the QoS requirement of a connection request, and (3) reserves the wavelength on each link along the path in such a way that the number of wavelength converters needed is minimized. Both formal analyses and extensive simulation experiments show that our inter-domain routing protocol outperforms the existing protocols.

Published in:

Lightwave Technology, Journal of  (Volume:28 ,  Issue: 15 )