Joint Optimal Congestion Control and Channel Assignment for Multi-Radio Multi-Channel Wireless Networks in Cyber-Physical Systems

We focus on designing a distributed algorithm for joint optimal congestion control and channel assignment in multi-radio multi-channel Cyber-Physical networks. The design problem is formulated as a network utility maximization subject to some constraints, which is a mixed-integer non-linear programming (MINLP). We propose a near-optimal distributed algorithm to solve this MINLP by the Lagrange dual decomposition and prove the convergence of this algorithm. Simulations show that the results obtained by the proposed distributed algorithm are very close to the optimal results obtained by the centralized branch and bound method.