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2007
IEEE

Comparison of Protection Mechanisms: Capacity Efficiency and Recovery Time

9 years 3 months ago
Comparison of Protection Mechanisms: Capacity Efficiency and Recovery Time
High efficiency in capacity utilization and fast restoration are two primary goals of survivable design in optical networks. Shared backup path protection has been shown to be efficient in terms of capacity utilization, due to the sharing of backup capacity. However, sharing of backup capacity also complicates the restoration process, and leads to slow recovery. Ring-type protection in mesh topology, on the other hand, has the advantage of fast restoration. The p-cycle scheme is the most efficient ring-type protection method in terms of capacity utilization. Recently, the concept of pre-cross-connected protection was proposed to increase the recovery speed of shared path protection. We overview these protection methods and their failure recovery processes. The recovery time of these schemes are compared analytically. To compare the capacity efficiency, we formulate integer programming optimization problems for three protection methods in static traffic scenario, considering wavelength ...
Wensheng He, Arun K. Somani
Added 16 Aug 2010
Updated 16 Aug 2010
Type Conference
Year 2007
Where ICC
Authors Wensheng He, Arun K. Somani
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