کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
450266 | 693875 | 2009 | 6 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: A new heuristic protection algorithm based on survivable integrated auxiliary graph in waveband switching optical networks A new heuristic protection algorithm based on survivable integrated auxiliary graph in waveband switching optical networks](/preview/png/450266.png)
In this paper, we study the survivability in waveband switching optical networks and propose a new heuristic algorithm called Protection based on Survivable Integrated Auxiliary Graph (PSIAG) to tolerate the single-link failure. The survivable integrated auxiliary graph (SIAG) is compared of the single virtual topology layer and multiple waveband-plane layers, and it can well solve the problem of routing and waveband assignment. In PSIAG, we can feasible use the waveband sub-path grouping scheme based on SIAG to save the switching ports in MG-OXCs. For each demand, PSIAG first computes the single-hop or multi-hop route-pair including a primary path and a link-disjoint backup path on virtual topology layer. If the route-pair cannot be found on virtual topology layer, PSIAG then computes the hybrid multi-hop route-pair on jointing the virtual topology layer and waveband-plane layers. Simulation results show that PSIAG can obtain better performance than previous algorithm.
Journal: Computer Communications - Volume 32, Issue 5, 27 March 2009, Pages 1000–1005