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|Title:||Fast and resource efficient segment-based failure recovery in WDM optical mesh networks|
|Source:||Saradhi, C.V.,Kong, N.C.,Gurasamy, M. (2004). Fast and resource efficient segment-based failure recovery in WDM optical mesh networks. Proceedings - IEEE Military Communications Conference MILCOM 3 : 1331-1337. ScholarBank@NUS Repository.|
|Abstract:||In this paper, we consider the problem of providing fast and resource efficient failure recovery in wavelength division multiplexed (WDM) optical networks under single link/node failure for dynamic traffic demand. We develop two novel segment-based schemes to achieve fast and resource efficient failure recovery. They include: 1) segment-based protection scheme in which resources are reserved for primary paths and protection paths at the time of connection establishment and 2) segment-based restoration scheme in which backup resources are not reserved in advance and a new backup path is computed only upon a failure. We conduct extensive simulation experiments on mesh 10 × 10, 11 × 11, and 12 × 12 networks to evaluate the proposed segment-based failure recovery schemes in terms of average recovery time, average spare capacity required for protection/restoration paths, and recovery ratio, for different network configurations. The numerical results obtained from the simulation experiments indicate that the segment-based protection provides significant savings (up to 30%) in spare capacity utilization over the end-to-end protection scheme. The average recovery time for the segment-based failure recovery schemes is significantly less (up to 35%) than that of the end-to-end failure recovery schemes. Furthermore, the recovery ratio for segment-based restoration scheme is considerably larger (up to 9%) than that of the end-to-end restoration scheme. © 2004 IEEE.|
|Source Title:||Proceedings - IEEE Military Communications Conference MILCOM|
|Appears in Collections:||Staff Publications|
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