A Greedy Link Scheduler for Wireless Networks with Gaussian Multiple Access and Broadcast Channels

Information theoretic Broadcast Channels (BC) and Multiple Access Channels (MAC) enable a single node to transmit data simultaneously to multiple nodes, and multiple nodes to transmit data simultaneously to a single node respectively. In this paper, we address the problem of link scheduling in multihop wireless networks containing nodes with BC and MAC capabilities. We first propose an interference model that extends protocol interference models, originally designed for point to point channels, to include the possibility of BC and MAC. Due to the high complexity of optimal link schedulers, we introduce the Multiuser Greedy Maximum Weight algorithm for link scheduling in multihop wireless networks containing BCs and MACs. Given a network graph, we develop new local pooling conditions and show that the performance of our algorithm can be fully characterized using the associated parameter, the multiuser local pooling factor. We provide examples of some network graphs, on which we apply lo...

• Type: Journal
• Year: 2010
• Where: INFOCOM
• Authors: Arun Sridharan, Can Emre Koksal, Elif Uysal-Biyikoglu
• Keywords: Communications, INFOCOM 2010, Local Pooling, Multihop Wireless Networks, Multiuser Local Pooling