Fair Channel Allocation and Access Design for Cognitive Ad Hoc Networks
The authors investigate the fair channel assignment and access design problem for cognitive radio ad hoc network in this paper. In particular, they consider a scenario where ad hoc network nodes have hardware constraints which allow them to access at most one channel at any time. They investigate a fair channel allocation problem where each node is allocated a subset of channels which are sensed and accessed periodically by their owners by using a MAC protocol. Toward this end, they analyze the complexity of the optimal brute-force search algorithm which finds the optimal solution for this NP-hard problem. They then develop low-complexity algorithms that can work efficiently with a MAC protocol algorithm, which resolves the access contention from neighboring secondary nodes.