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講準字216號:無線多媒體網絡建模與服務質量分析

發布時間:2019-07-23|瀏覽次數:

講座報告主題:無線多媒體網絡建模與服務質量分析
專家姓名:閔革勇
日期:2019-08-16 時間:14:00
地點:計算機樓208
主辦單位:計算機科學與通信工程學院  

主講簡介:Professor Geyong Min is a Chair in High Performance Computing and Networking and the Academic Lead of Computer Science in the College of Engineering, Mathematics and Physical Sciences at the University of Exeter, UK. His recent research has been supported by European Horizon-2020, FP6/FP7, UK EPSRC, Royal Society, Royal Academy of Engineering, and industrial partners including British Telecom, Huawei Technologies, IBM, INMARSAT, Motorola, and InforSense Ltd. He has published more than 200 research papers in leading international journals including IEEE/ACM Transactions on Networking, IEEE Journal on Selected Areas in Communications, IEEE Transactions on Computers, IEEE Transactions on Parallel and Distributed Systems, IEEE Transactions on Communications, and IEEE Transactions on Wireless Communications, and at reputable international conferences, such as SIGCOMM-IMC, INFOCOM, and ICDCS. He is an Associated Editor of several international journals, e.g., IEEE Transactions on Computers, and IEEE Transactions on Cloud Computing. He served as the General Chair/Program Chair of a number of international conferences in the area of Information and Communications Technologies. 研究專長:無線多媒體網絡。

主講內容:隨著先進無線通信技術的快速創新,過去幾年,移動多媒體應用(例如,實時移動視頻、3D視頻流、VoIP、移動電視等)的發展迅猛。這些內容豐富、資源匱乏的多媒體應用程序產生了復雜的流量模式,并對服務質量(QoS)有很高的要求。然而,無線通信的固有特性,如帶寬稀缺、傳輸范圍有限、信道易出錯、接入技術異類等,導致可用通信資源的高度動態性,給多媒體應用帶來了巨大的挑戰。本次講座首先介紹異質隨機模型來捕捉多媒體應用的交通特性(如突發性、自相似性和大滯后相關)。同時,在此基礎上,闡述一種混合業務調度機制的性能分析模型,該混合業務調度機制以分層的方式集成了基本的調度方案,是無線多媒體網絡中一種很有前途的QoS區分策略。通過對分析結果與實際系統在實際多媒體應用中的仿真實驗結果的比較驗證模型的準確性。然后將該模型用作無線多媒體網絡資源分配和管理的一種經濟有效的性能優化工具。最后,提出和討論相關的新興問題和未來方向。


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