The tremendous growth in usage of internet technology has led to the development of various wireless networks. One of the wireless networks that have gathered lot of attention is Wireless Mesh Network (WMN). WMN is being preferred because of its numerous advantages such as better coverage area, communication with other networks, low energy consumption, cost effectiveness, increased network capacity and is compatible with all IEEE 802.11 standards. However there are several challenges degrades the network performance. Normally WMNs adopts shortest path algorithm for route establishment and most of the existing algorithms are not fully accounting the factors that impacts network performance, which in turn introduces unbalanced load distribution issues in the WMN. The design of a novel delay-based link quality metric is given in this paper which utilizes the real-time statistics from the wireless driver to consider the wireless contention, congestion, and channel loss. The proposed delay metric is additive in nature and introduce less routing overhead compared to existing mechanisms. Simulation results illustrate that the proposed DBL-AODV protocol significantly enhances the performance of the network by reducing the routing overhead and the routes having high delay are avoided from the process of packet forwarding compared to the standard protocol.

Delay, Load balancing, AODV,WMN

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