各部门、各单位：  

应我校无线网络安全技术国家工程实验室邀请，加拿大滑铁卢大学Weihua Zhuang院士、加拿大维多利亚大学Lin Cai教授将于3月29日来我校做专题学术讲座，欢迎广大师生参加！报告具体安排如下：  

报告时间：2019年3月29日（周五）10:00-12:00  

报告地点：通院大楼106室  

报告一：Service Provisioning in 5G Communication Networks（Weihua Zhuang院士）  

报告摘要：The fifth generation (5G) communication networks will accommodate a wide range of emerging services with diverse service quality requirements. The network will integrate a variety of network resources and technologies to support high transmission rate and to enhance quality of experience to mobile users. The traditional one-size-fits-all network architecture cannot efficiently meet the needs of different services, due to the poor scalability, limited adaptability, and inflexibility. Network function virtualization (NFV) enabled by software defined networking (SDN) technology is a promising approach for an agile and flexible 5G networking infrastructure. In this presentation, we will provide an overview of several recent studies for 5G networks, including dynamic radio resource slicing in wireless network virtualization, computing and transmission resource allocation in the core network, and how to establish a customized virtual network topology for multicast services.    

报告人简介：Dr. 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. She is the recipient of 2017 Technical Recognition Award from IEEE Communications Society Ad Hoc & Sensor Networks Technical Committee, and 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), Technical Program Chair/Co-Chair of IEEE VTC Fall 2017 and Fall 2016, and the Technical Program Symposia Chair of the IEEE Globecom 2011. She is a Fellow of the IEEE, the Royal Society of Canada, the Canadian Academy of Engineering, and the Engineering Institute of Canada. Dr. Zhuang is an elected member in the Board of Governors and VP Publications of the IEEE Vehicular Technology Society.

报告二：Multi-hop wireless pipeline powering Internet-of-Things（Lin Cai教授）

报告摘要：Connecting more than half of world population, the Internet changes how we acquire, generate and exchange information and knowledge, and how we work, live, and relate to one another, forever. Enabled by advanced wireless technologies, the Internet will connect billions to trillions of devices in the coming decades, leading to a new era, Internet-of-Things (IoT). Wireless transmission between two devices is a mature technology. However, long-distance wireless transmission for IoT is technically challenging. Wireless communication is broadcast in nature, so signals are propagated and decayed over distance and interfere with each other. To enable long-distance information exchange, it is sensible to construct a multi-hop bidirectional wireless pipeline, so wireless devices can use low power with less interference to relay for each other, to/from the Internet, achieving a higher spatial capacity. However, multi-hop wireless transmission has suffered from the curse that the throughput and reliability degrade quickly when the number of hops increases, due to mutual interference and inefficient resource management. Realizing that the layered Internet architecture designed for wired networks does not fit well for wireless ones, we abandoned the traditional approach that the physical (PHY) layer deals with point-to-point transmission only, and intentionally let the PHY layer be adaptive to network topology and traffic. Following this line of breakthrough, we proposed a multi-hop physical-layer network coding (MPNC) solution to create a wireless bidirectional pipeline that can maintain an end-to-end (e2e) scalable throughput regardless of the distance, i.e., the throughput of an any-hop path is the same as that of a one-hop transmission if the per-hop distance remains the same, while the e2e bit-error-rate increases merely linearly w.r.t. hop count using an effective error cancellation design. To prove the concept of this non-traditional approach, we have built a software-defined radio testbed to implement the MPNC solution. The test results confirm that, in a static environment, MPNC is feasible to achieve the best possible performance for multi-hop wireless transmissions, a major breakthrough towards the holy grail in wireless networking.    

报告人简介：Lin Cai received her M.A.Sc. and PhD degrees (awarded Outstanding Achievement in Graduate Studies) in electrical and computer engineering from the University of Waterloo, Waterloo, Canada, in 2002 and 2005, respectively.  Since 2005, she has been with the Department of Electrical & Computer Engineering at the University of Victoria, and she is currently a Professor. Her research interests span several areas in communications and networking, with a focus on network protocol and architecture design supporting emerging multimedia traffic and Internet of Things. She was a recipient of the NSERC Discovery Accelerator Supplement (DAS) Grants in 2010 and 2015, respectively, and the Best Paper Awards of IEEE ICC 2008 and IEEE WCNC 2011. She has founded and chaired IEEE Victoria Section Vehicular Technology and Communications Joint Societies Chapter.  

She has been elected to serve the IEEE Vehicular Technology Society Board of Governors, 2019-2021. She has served as an area editor for IEEE Transactions on Vehicular Technology, a member of the Steering Committee of the IEEE Transactions on Big Data (TBD) and IEEE Transactions on Cloud Computing (TCC),  an Associate Editor of the IEEE Internet of Things Journal, IEEE Transactions on Wireless Communications, IEEE Transactions on Vehicular Technology, EURASIP Journal on Wireless Communications and Networking, International Journal of Sensor Networks, and Journal of Communications and Networks (JCN), and as the Distinguished Lecturer of the IEEE VTS Society. She has served as a TPC symposium co-chair for IEEE Globecom'10 and Globecom'13. She is a registered professional engineer of British Columbia, Canada.  

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通信与信息工程学院  

2019年3月26日