题目：Cross-Layer Resource Allocation for Multimedia Applications in Heterogeneous Networks
报告人：周亮 法国国家先进技术学院
地点：东五楼二楼210学术报告厅
时间：7月19日上午9：00

报告摘要：
　　An important issue for supporting multimedia applications in multiple heterogeneous networks, a typical pervasive computing environment, is how to optimize the rate allocation by intelligently utilizing the available network resources while, at the same time, to meet each application’s QoS (Quality of Service) requirement. In this work, we develop and evaluate a rate allocation scheme in terms of audio and video applications based on a cross-layer design framework. At first, we construct a general distortion model according to the observed parameters in each network, as well as each application’s rate-distortion characteristic. Then, the rate allocation is formulated as a convex optimization problem that minimizes the sum of the expected distortion of all applications. Furthermore, the realization of the distributed rate allocation algorithm for achieving an optimal or close-to-optimal end-to-end QoS under the overall limited resource budget is the highlight of this paper. Simulation results are provided which demonstrate the effectiveness of our proposed distributed rate allocation scheme.

报告人简介：
　　Dr. Liang ZHOU, the Senior Researcher of ENSTA-ParisTech, France, got his Ph.D. degree major at Information and Communications Engineering from Ecole Normale Superieure (ENS), Cachan, France and Shanghai Jiao Tong University, Shanghai, China, respectively. In March 2010, he got Alexander von Humboldt Fellowship, Germany.
　　Dr. Liang ZHOU’s research interests focus on network transport and application layers, especially on multimedia communications and multimedia service. He has published more than 40 papers in international journals (IEEE JSAC, IEEE Transactions, IEEE Magazine) and conferences (IEEE Globecom, IEEE ICC). In addition, he acts as the editor/guest editor for more than 5 SCI International Journals (EURASIP Journal of Wireless Communications and Networking, KSII Transactions on Internet and Information Systems etc), and TPC member for more than 20 International Conferences (IEEE ICC, IEEE Globecom etc). He is a member IEEE and ACM.