Research on integrated model and transmission controlling algorithm for distributed multimedia information system
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摘要: 作为分布式多媒体系统通信与表现控制研究的基础,提出分布式多媒体系统整体模型DMISIM(Distributed Multimedia Information System Integrated Model),将分布式多媒体系统抽象为3元组——多媒体同步时间单元SIU(Synchronization Interval Unit)、通信信道以及信道与SIU序列之间的一一映射关系．模型描述多媒体信息和通信网络的静态属性,反映系统通信传输的动态过程．基于DMISIM,对分布式多媒体通信传输控制机制进行研究,提出最小偏差调度算法MDSA(Minimum Deviation Scheduling Algorithm)作为古典列表调度算法CLSH(Classic List Scheduling Heuristic)的改进．理论分析和逻辑推导证明,在不增加算法时间复杂度,不降低多媒体同步表现质量的同时,算法提高了系统目的端缓冲区利用率,降低了缓冲区需求及多媒体数据溢出的可能性．算法与底层通信传输机制无关,可以广泛应用于分布式多媒体系统的通信传输过程中．Abstract: To resolve the synchronization for multimedia communication and multimedia presentation of distributed multimedia system, a distributed multimedia information system integrated model(DMISIM) was put forward. In this model, distributed multimedia information system was formulated as synchronization interval units(SIU), communication channels and a mapping from the channels to the SIUs sequence. DMISIM describes not only the static attributes of multimedia information and communication channel but also the dynamic processes of multimedia communication transmission. Based on DMISIM, distributed multimedia communication transmission mechanism was researched and minimum deviation scheduling algorithm(MDSA) was described as the improvement of classic list scheduling heuristic(CLSH). It is proved by theoretical analysis and logical deduction, that MDSA has better performance than that of CLSH in such fields as channel usage factor, capacity requirement of destination buffers, whereas the algorithm complexity and multimedia synchronization quality are stable. MDSA is independent of communication subnet transport mechanism and can be widely used in multimedia communications.
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[1] King M．Breaking the server and data communications barrier with serverless guaranteed quality of service (GQoS) compliant communications ．Proceedings of the First International Conference on Peer-to-Peer Computing ．Linkoping,Sweden,2001．36~44 [2] Pang B,Gao W．Design and performance evaluation of differentiated services router for next generation internet ．Proceedings of 2001 International Conference on Computer Networks and Mobile Computing ．Los Alamitos,CA,USA,2001．316~321 [3] 孙文彦,熊 璋,龚声蓉．多媒体同步中QoS到QoP的模糊映射[J]．软件学报,2000,11(12):1642~1647 Sun Wenyan,Xiong Zhang,Gong Shengrong．Fuzzy mapping of QoS to QoP in multimedia synchronization[J]．Journal of Software,2000,11(12):1642~1647(in Chinese) [4] 宋京民,熊 璋,孙文彦．一种基于动态可伸缩WEB结构的分布式多媒体系统[J]．小型微型计算机系统,2000,21(5):478~480 Song Jingmin,Xiong Zhang,Sun Wenyan．A scalable-web-based system for distributed multimedia application[J]．Mini-Micro Systems,2000,21(5):478~480(in Chiese) [5] 陆慧梅,向 勇,史美林．Internet QoS研究[J]．小型微型计算机系统,2002,23(7):786~791 Lu Huimei,Xiang Yong,Shi Meilin．Internet QoS mechanisms:a survey[J]．Mini-Micro Systems,2002,23(7):786~791(in Chinese) [6] Woo M,Qazi N U,Ghafoor A．A synchronization framework for communication of pre-orchestrated multimedia information[J]．IEEE Network Mag,1994,8(1):52~61 [7] Ramanathan S,Rangan P V．Adaptive feedback techniques for synchronized multimedia retrieval over integrated networks[J]．IEEE/ACM Trans Networking,1993,1(2):246~259 [8] Baqai S,Khan M F,Woo M,et al．Quality-based evaluation of multimedia synchronization protocols for distributed multimedia information systems ．IEEE Journal on Selected Areas in Communications,1996,14(7):1388~1403 -
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