Ellipse-underlay protection algorithm to deal with regional demolishments in mesh optical networks |
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Authors: | Xianwei Zhou Junling Yuan Jianping Wang |
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Affiliation: | (3) Division of Computer Science, Korean Advanced Institute of Science and Technology, Daejeon, Korea;(4) Department of Industrial and Systems Engineering, Rutgers University, Piscataway, USA;(5) AT&T Labs – Research, Florham Park, USA;(6) Division of Computer Science, Korean Advanced Institute of Science and Technology, Daejeon, Korea; |
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Abstract: | For the abundant bandwidth, a malfunction in optical networks causes a great deal of loss to traffic, and hence the survivability
of optical networks must be considered. Two technologies, protection and restoration, are used in general, and the former
is investigated in this paper. The existing protection strategies mainly cope with a single link failure or a double-link
failure in an optical network and not consider what causes these failures. In this paper, we study the reasons which lead
to the network malfunctions, and pose a new concept named regional demolishment. A protection algorithm named Ellipse-underlay
algorithm is also proposed. We compare the performance of the Ellipse-underlay algorithm to the Node-disjoint algorithm. Simulation
results show that the Ellipse-underlay algorithm is more effective to the survivability of traffic than the Node-disjoint
algorithm. |
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Keywords: | |
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