Mr. ZhenJiang Han Profile

ZhenJiang Han

Master of Sys & Comp Eng at Carleton Univ

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Proceedings Article | 9 September 2002 Paper

Design-survivable WDM networks using a path protection algorithm

ZhenJiang Han, Ioannis Lambadaris

Proceedings Volume 4910, (2002) https://doi.org/10.1117/12.482438

KEYWORDS: Failure analysis, Wavelength division multiplexing, Wavelength division multiplexing networks, Switches, Optical networks, Network architectures, Computer simulations, Signal detection, Algorithm development, Switching

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ABSTRACT A major challenge of survivable wavelength-division multiplexing (WDM) network design is deciding how much spare capacity there should be and where it should be placed, so that interrupted traffic can be recovered within a very short time. Protection, including link protection and path protection, is the main way to solve this problem and to prevent huge losses. Link protection and dedicated path protection currently dominate this fault recovery field. Both have short recovery time and low resource efficiency. Shared path protection is also resource efficient with acceptable recovery time. More and more industries recognize that shared path protection is the trend and are trying to find good methods to design shared protection paths. This paper proposes a new efficient algorithm-Predetermined Protection Path Design (PPD), which can design maximum sharing protection paths. We describe in detail how PPD works, and compare it with the existing protection algorithms. Simulation results show that PPD can design maximum sharing protection paths and achieve 28% better resource efficiency than dedicated path protection as well as 12% better resource efficiency than the current shared path protection algorithms, with acceptable recovery time. PPD also has good generality, scalability and restorability.

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