Multicasting in Time-varying Wireless Networks: Cross-layer Dynamic Resource Allocation

Abstract

In this paper, we study the dynamic resource allocation problem for a class of time-varying wireless multicast networks with intra-multicast network coding. We provide distributed and dynamic cross-layer strategy to simultaneously achieve utility optimization and network stability under given power constraints. Our result shows when combined with Lyapunov drift technique for optimal flow control, "one shot" type of network codes, i.e., codes that restrict network coding within packets in a multicast that enter the network in the same timeslot, are sufficient to achieve performance optimality in this class of networks.