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2007

Heuristic and optimal techniques for light-trail assignment in optical ring WDM networks

8 years 10 months ago
Heuristic and optimal techniques for light-trail assignment in optical ring WDM networks
In this paper we address the problem of constrained optimization (ILP formulation) and propose a set of heuristic algorithms for assigning light-trails [1–4,7,10] to WDM ring networks to facilitate IP centric dynamic communication at the optical layer. A light-trail is a generalization of a lightpath such that multiple nodes can take part in communication along the path without the need for optical switching. A light-trail represents an opportunistic medium in which multiple spatially distributed sub-lambda flows can be groomed despite without the need for optical switching. A light-trail is analogous to an optical bus such that multiple connections between source–destination pairs can be provisioned under the constraint that no two connections have overlapping time-intervals. This enables traffic grooming at the optical layer. In this paper we first describe a constrained optimization procedure for assigning light-trails in WDM ring networks. We then show five heuristic algori...
Ashwin Gumaste, Paparao Palacharla
Added 18 Dec 2010
Updated 18 Dec 2010
Type Journal
Year 2007
Where COMCOM
Authors Ashwin Gumaste, Paparao Palacharla
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