应网络与交换技术国家重点实验室邀请，澳大利亚国家科研组织CSIRO(The Commonwealth Scientific and Industrial Research Organisation)刘仁平教授将于2015年10月19日来校交流并做学术讲座，欢迎有兴趣的师生踊跃参与。
讲座题目：WLAN Power Save with Offset Listen Interval for Machine-to-Machine Communications
主讲人：Prof. Renping Liu
主持人：田辉教授
时间：2015年10月19日(周一)上午10:00-12:00
地点：新科研楼737
讲座内容摘要：
Large scale deployment of machine-to-machine (M2M) communication networks hinges on the cost and energy efficient design of the embedded devices. Standard WLAN power save mechanisms, which are designed for human communications, experience performance degradation and unbalanced energy consumptions in M2M communication networks. We develop a novel analytical model that takes into account the fundamentally different network architecture and traffic patterns of M2M communications. Our model accurately characterizes the high contention and long packet delay found in M2M communication networks, while previous models underestimate such measures. To combat such performance decline, we propose a new algorithm that enhances existing power save mechanisms to extend the lifetime of a M2M communication network. We call this the Offset ListenInterval (OLi) Algorithm. The OLi algorithm spreads the M2M traffic evenly with calculated offsets to alleviate network contention and reduce packet delay. Our analytical model is then used to evaluate the energy efficiency of our OLi algorithm and compare with the standard power save mechanisms. Our results show that the proposed OLi algorithm extends the lifetime by up to 40\%, and scales up to thousands of nodes in a M2M communication network.
Prof. Renping Liu个人简介：
Ren Ping Liu received his B.E. and M.E. degrees from Beijing University of Posts and Telecommunications, China, and the Ph.D. degree from the University of Newcastle, Australia. He is a Principal Scientist of networking technology in CSIRO. He is also an Adjunct Professor at University of Technology, Sydney, and Macquarie University. His research interests include Markov analysis and QoS scheduling in WLAN, VANET, IoT, LTE, 5G, SDN, and network security. He has over 100 research publications, and has supervised over 20 PhD students.
网络与交换技术国家重点实验室
2015年10月16日
