Interference-aware Multipath Selection for Reliable Routing in Wireless Mesh Networks

This paper investigates the problem of selecting multiple routing paths to provide better reliability in multi-radio, multi-channel mesh networks with stationary nodes. Providing reliability is difficult in wireless networks because of unreliable transmissions. Previous work has investigated the use of additional data redundancy to improve the packet delivery rate, but requires node-disjoint paths to be used. In this paper we investigate multipath routing with packet duplication and non-disjoint paths for achieving better reliability and low delay. We propose a path weight function based on the ETT metric and interference minimisation. Our solution provides higher packet delivery ratio and lower end-to-end delay when compared to the single path WCETT metric, a maximally disjoint path selection metric, and the CAM metric.