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Fault Tolerant Congestion based Algorithms in OBS Network
Hardeep Singh, Jai Prakash, Dinesh Arora, Amit Wason
Pages - 350 - 359     |    Revised - 01-11-2011     |    Published - 15-12-2011
Volume - 5   Issue - 5    |    Publication Date - November / December 2011  Table of Contents
Optical Burst Sitching Network, Congestion, Contention Resolution, Blocking Probability
In Optical Burst Switched networks, each light path carry huge amount of traffic, path failures may damage the user application. Hence fault-tolerance becomes an important issue on these networks. Blocking probability is a key index of quality of service in Optical Burst Switched (OBS) network. The Erlang formula has been used extensively in the traffic engineering of optical communication to calculate the blocking probability. The paper revisits burst contention resolution problems in OBS networks. When the network is overloaded, no contention resolution scheme would effectively avoid the collision and cause blocking. It is important to first decide, a good routing algorithm and then to choose a wavelength assignment scheme. In this paper we have developed two algorithms, Fault Tolerant Optimized Blocking Algorithm (FTOBA) and Fault Tolerant Least Congestion Algorithm (FTLCA) and then compare the performance of these algorithms on the basis of blocking probability. These algorithms are based upon the congestion on path in OBS network and based on the simulation results, we shows that the reliable and fault tolerant routing algorithms reduces the blocking probability.
CITED BY (2)  
1 Vallejos, R., & Jara, N. (2014). Join routing and dimensioning heuristic for dynamic WDM optical mesh networks with wavelength conversion. Optical Fiber Technology, 20(3), 217-223.
2 Garg, P., & Goyal, N. (2006). Blocking Performance Enhancement Using Congestion Control in Optical Burst Switching Networks.
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Mr. Hardeep Singh
- India
Mr. Jai Prakash
- India
Mr. Dinesh Arora
- India
Dr. Amit Wason
- India