On-demand Multi-Rate, Carrier Sense and Hidden Node Interference-Aware Channel Assignment Scheme in Wireless Mesh Network

The proposed interference avoidance channel assignment schemes can provide a significant advantage in term of aggregated throughput by assigning channels only to the active nodes and minimizing the intra-flow and inter-flow interference caused by hidden nodes. However, the negative aspect of the channel assignment schemes for the multi-rate multi-hop wireless mesh networks is the capacity reduction caused by channel reuse over low and high data rate links at the carrier sense and hidden node ranges. This paper proposed an On-demand Multi-Rate, Carrier Sense and Hidden node Interference-Aware channel assignment scheme (AODV-MRCSHDIA) to minimize the interference caused by low rate links at the carrier sense and hidden node ranges on the network throughput. The simulation experiment has been conducted to evaluate the AODVMRCSHDIA over the existing schemes in term of packet delivery ratio and end-to-end delay