报告人：加拿大滑铁卢大学Weihua Zhuang教授，IEEEFellow，加拿大皇家科学院院士，工程院院士，工程研究院院士，TierI Canada Research Chair
Title:Spectrum and Energy Efficient MAC for Wireless Ad Hoc Networks
Abstract: Massive machine-to-machine (M2M) communication has been identified as an important use case in 5G communication networks for various Internet-of-Things (IoT) applications. The large number of machines/devices necessitates establishing an effective self-organizing wireless ad hoc network, complementary to cellular systems. In this presentation, we discuss how to dynamically coordinate the transmissions time and bandwidth based on instantaneous traffic load of the links in the ad hoc network, in order to efficiently utilize radio spectrum and device energy. First, we present an energy-efficient medium access control (MAC) protocol for a fully connected network. Energy consumption is reduced by periodically putting radio interfaces in the sleep mode and by reducing transmission collisions. Second, we present a distributed MAC scheme based on dynamic space-reservation in a multi-hop environment. For each scheduled transmission, a proper space area around the receiver node is reserved to enhance spatial spectrum reuse. Third, we study joint scheduling and transmission power control. Based on an asymptotic analysis, we present a scheduling and power control algorithm to approach the maximum spectrum efficiency, subject to an energy consumption constraint. Numerical results demonstrate that the proposed solutions outperform existing MAC protocols.
Weihua Zhuang has been with the Department of Electrical and Computer Engineering, University of Waterloo, Canada, since 1993, where she is a Professor and a Tier I Canada Research Chair in Wireless Communication Networks. Her current research focuses on link, network, and transport layers for 5G networks and beyond. She is a co-recipient of several best paper awards from IEEE conferences. Dr. Zhuang was the Editor-in-Chief of IEEE Transactions on Vehicular Technology (2007-2013), and the Technical Program Chair of the IEEE VTC Fall 2017 and 2016. She is a Fellow of the IEEE, the Royal Society of Canada, the Canadian Academy of Engineering, and the Engineering Institute of Canada. She is an elected member in the Board of Governors and Vice President Publications of the IEEE Vehicular Technology Society.