Interference and Traffic Aware Channel Assignment in WiFi-Based Wireless Mesh Networks
Wireless Mesh Networks (WMN) typically employs mesh routers that are equipped with multiple radio interfaces to improve network capacity. The key aspect is to cleverly assign different channels (i.e., frequency bands) to each radio interface to form a WMN with minimum interference. The channel assignment must obey the constraints that the number of different channels assigned to a mesh router is at most the number of interfaces on the router, and the resultant mesh network is connected. This problem is known to be NP-hard. In this paper, the authors propose a hybrid, Interference and Traffic Aware Channel Assignment (ITACA) scheme that achieve good multi-hop path performance between every node and the designated gateway nodes in a multi-radio WMN network.