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计算机科学与技术学科网络安全与优化研究所学术报告(王雄 华中科技大学)

发布者:戴 情   发布时间:2021-11-22  浏览次数:10

报告题目:Joint D2D Collaboration and Task Offloading for Edge Computing: A Mean Field 

Graph Approach 

报告时间:2021 年 11 月 24 日 上午 10:00-10:45 

报告地点:腾讯会议号 146 324 091

报告摘要:Mobile edge computing (MEC) facilitates computation offloading to edge server, as well as task processing via device-to-device (D2D) collaboration. Existing works mainly focus on centralized network-assisted offloading solutions, which are unscalable to scenarios involving collaboration among massive users. In this talk, we present a joint framework of decentralized D2D collaboration and efficient task offloading for a large-population MEC system. Specifically, we utilize the power of two choices for D2D collaboration, which enables users to beneficially assist each other in a decentralized manner. Due to short-range D2D communication and user movements, we formulate a mean field model on a finite-degree and dynamic graph to analyze the state evolution of D2D collaboration. We derive the existence, uniqueness and convergence of the state stationary point so as to provide a tractable collaboration performance. Complementing this D2D collaboration, we further build a Stackelberg game to model users’ task offloading, where edge server is the leader to determine a service price, while users are followers to make offloading decisions. By embedding the Stackelberg game into Lyapunov optimization, we develop an online offloading and pricing scheme, which could optimize server's service utility and users' system cost simultaneously. Extensive evaluations show that our D2D collaboration can mitigate users' workloads by 73.8% and task offloading can achieve high energy efficiency.

 

报告人简介:王雄博士,华中科技大学计算机学院副教授,硕士生导师。2014年6月本科毕业于华中科技大学电子工程系(提高班),2019年6月于上海交通大学信息与通信工程专业获得工学博士学位,随后在香港中文大学计算机科学与工程系担任博士后研究员,2021年11月入职华中科技大学计算机学院。研究方向包括大规模网络系统分析,平均场理论,边缘计算,群智感知,机器学习,智能网卡。已在JSAC,TMC,INFOCOM,IJCAI,IWQoS等国内外顶级学术期刊或会议发表论文21篇,公开和授权专利5项,并获得2019年中国电子学会优秀博士论文,担任TON,JSAC,TMC,INFOCOM,MOBIHOC等多个学术期刊或会议审稿人

邀请人:贾日恒