Comprehensively Context-Aware Approach to Guaranteeing Multimedia Conferencing Services

作     者：吴冀衍 田岳 程渤 商彦磊 WU Jiyan;TIAN Yue;CHENG Bo;SHANG Yanlei

作者机构：State Key Laboratory of Networking and Switching TechnologyBeijing University of Posts and Telecommunications 

出 版 物：《China Communications》 (中国通信（英文版）)

年 卷 期：2013年第10卷第9期

页      面：53-64页

核心收录：

学科分类：08[工学] 080402[工学-测试计量技术及仪器] 0804[工学-仪器科学与技术] 

基　　金：supported by the NationalBasic Research Program of China(973 Program)under Grants No.2011CB302506,No.2011CB302704,No.2012CB315802 the National Key Technologies Research and Development Program of China"Research on theMobile Community Cultural Service Aggregation Supporting Technology"under Grant No.2012BAH94F02 the Novel Mobile ServiceControl Network Architecture and Key Technologies under Grant No.2010ZX03004001-01 the National High Technical Researchand Development Program of China(863 Program)under Grant No.2013AA102301 the National Natural Science Foundation of Chinaunder Grants No.61003067,No.61171102,No.61001118,No.61132001 Program for NewCentury Excellent Talents in University underGrant No.NCET-11-0592 the Project of NewGeneration Broadband Wireless Network under Grant No.2011ZX03002-002-01 the Beijing Nova Program under Grant No.2008B50 

主　　题：SOC multimedia conferencing context-aware 

摘      要：Service-Oriented Communication(SOC)is a key research issue to enable media communications using the Service-Oriented Architecture(SOA).Motivated by the necessity to guarantee the service quality of our webbased multimedia conferencing system,we present a Comprehensively Context-Aware(CoCA)approach in this *** major problem in the existing end-to-end Quality of Service(QoS)management solutions is that they analyse and exploit the relationships between the QoS metrics and corresponding contexts in an isolated *** this paper,we propose a novel approach to leveraging such relationships in a comprehensive manner based on Bayesian networks and the fuzzy set *** approach includes three phases:1)information feedback and training,2)QoS-to-context mapping,and3)optimal context *** implement the proposed CoCA in the real multimedia conferencing system and compare its performance with the existing bandwidth aware and playback buffer aware *** results show that the proposed CoCA outperforms the competing approaches in improving the average video Peak Signal-to-Noise Ratio(PSNR).It also exhibits good performance in preventing the playback buffer starvation.