Performance Analysis of Unified Failure Model for Emerging WiMAX Networks

Abstract

In this paper, we present a failure model for WiMAX network developed by considering the collision due to contention, unavailability of bandwidth and channel error assuming them as independent events. Using this model, the performance of bandwidth request based on contention resolution with exponential increase and exponential decrease (EIED) backoff is investigated and observed low contention efficiency with high access delay. Hence, we modify the EIED mechanism by computing the backoff factor with average contention window and estimating the response time from the transmission failure. Simulations validate the developed model with modified EIED backoff and shows better performance than conventional scheme.

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R. Anbazhagan and N. Rangaswamy, "Performance Analysis of Unified Failure Model for Emerging WiMAX Networks," Wireless Engineering and Technology, Vol. 3 No. 2, 2012, pp. 72-76. doi: 10.4236/wet.2012.32011.

Conflicts of Interest

The authors declare no conflicts of interest.

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