Utility-based Optimal Rate Allocation for Heterogeneous Wireless Multicast

Abstract— Heterogeneous multicast is an efficient communication scheme especially for multimedia applications running over multihop networks when multicast receivers in the same session require service at different rates commensurate with their capabilities. In this paper, we address the problem of resource allocation for a set of heterogeneous multicast sessions over multihop wireless networks. We propose an iterative algorithm that achieves the optimal rates for a set of heterogeneous multicast sessions such that the aggregate utility for all sessions is maximized. We present the formulation of the multicast resource allocation problem as a non-linear optimization model and highlight the cross-layer framework that can solve this problem in a distributed ad hoc network environment with asynchronous computations. Our simulations show that the algorithm achieves optimal resource utilization, guarantees fairness among multicast sessions, provides flexibility in allocating rates over ...

• Type: Conference
• Year: 2007
• Where: ICC
• Authors: Amr M. Mohamed, Hussein M. Alnuweiri
• Keywords: Communications, Heterogeneous Multicast, ICC 2007, Multicast, Multicast Sessions