Rate-Loss Based Channel Assignment in Multi-Rate Wireless Mesh Networks

Recently, much attention has been paid to the problem of how to efficiently utilize multiple orthogonal channels and communication radios to enhance the aggregate throughput of a Wireless Mesh Network (WMN). Most of prior works on the channel assignment problem assume that all transmission links can only transmit at the base rate and do not consider the presence of multiple bit-rates. However, in a multi-rate environment, the achievable throughput of a high-rate link is critically affected by neighboring low-rate links when they share the same channel. This problem is called performance anomaly.