Joint channel assignment and routing in Software Defined wireless mesh networks

Interference among wireless links is the main reason for capacity reduction in wireless mesh networks. Allowing multiple radio interface use in a mesh router with different frequency channel is often presented as a possible way to improve the network capacity. One efficient way is using a centralized controller to assign proper frequency channel to radio interfaces which would significantly reduce the interference. Furthermore, proposing a routing protocol which consider interference as a leading factor for finding a path can noticeably increase the overall throughput. Since Software-Defined Networking provide more flexible and manageable networks by decoupling between control plane and data plane and implementing the control and management in a logically centralized controller, it can be a good choice. This paper is supposed to use a controller in a SDN wireless mesh networks to assign channels based on a static channel assignment algorithm and making routing decision based on the remained interference between links.