Title:Optimal Throughput for Reliability and Stability in Wireless Multicast Communication
VOLUME: 3 ISSUE: 1
Author(s):Thong Huynh, In-Yeup Kong and Won-Joo Hwang
Affiliation:Department of Information and Communications Engineering, Inje University, Kimhae, South Korea.
Keywords:Lyapunov optimization, multicast communication, reliability, scheduling policy, stability, throughput maximization,
wireless networks.
Abstract:Multicast communications can help to transmit traffic efficiently to target groups of interested users without extra
bandwidth or power resources. However, compared to unicast transmission, multicast over wireless channels does not
support reliable transmission due to limitation of the message overhead. In this paper, we study the problem of how to
guarantee reliability while maintaining the maximum throughput in multicast communication. We propose a two-step policy
to characterize the throughput-optimization problem with the reliability constraints of multicast communication. In the
first step, we allocate a transmission rate to each group in order to guarantee the reliability constraint and to maximize the
throughput of each group. In the second step, we assign indicator functions to the multicast group with the maximum
throughput. The simulation results highlight the benefits of our approach to guarantee the reliability and maximize the
throughput in multicast communications.
