Enhancing the Multimedia Experience in Emerging Networks: Rate-Distortion Optimization in Multimedia Networking

增强新兴网络中的多媒体体验：多媒体网络中的速率失真优化

• 批准号: 0430907
• 负责人: Yucel Altunbasak
• 金额: $ 18万
• 依托单位: Georgia Tech Research Corporation
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2004
• 资助国家: 美国
• 起止时间: 2004-09-01 至 2007-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0430907&HistoricalAwards=false
• 关键词: Enhancing; Multimedia; Experience; Emerging; Networks

As multimedia processing and networking technologies, products andservices evolve, the number of people communicating interactivelyis growing rapidly. Consequently, multimedia communicationservices are starting to consume a considerable share of thebackbone traffic. This highlights the problem of transmittingreal-time media efficiently. Effective multimedia communicationdemands appropriate media-aware and application-specificsolutions, without which the full benefits of such services willnot be realized. Poor approaches often lead to such systemperformance degradations as unacceptable presentation qualityperceived by the clients, possible network collapse due to thehigh-bandwidth nature of multimedia applications, and poorperformance observed by other network flows due to theunresponsiveness of such applications.Given the fact that existing protocol suites are unable to providethe desired features, the study of media-aware transport protocolsis overdue. The focus of this research is on the design andevaluation of end-to-end solutions for reliable multimediaservices. Nonetheless, it is a challenging task to develop ageneric solution that can satisfy the needs of the broad range ofmultimedia applications available today. Such an approach wouldresult either in an unnecessarily complicated protocol that is farbeyond real implementation or in a very high-level one that cannotexploit the specific features of the media. The investigators' aimis to develop a suite of Multimedia Transport Protocols (MMTP)that integrate media properties, application requirements, andnetwork characteristics in such a way that the presentationquality is optimal in the rate-distortion sense.

随着多媒体处理和网络技术、产品和服务的发展，交互式通信的人数正在迅速增长。因此，多媒体通信服务开始消耗相当大的份额的骨干流量。这突出了有效传输实时媒体的问题。有效的多媒体通信需要适当的媒体感知和应用特定的解决方案，没有这些解决方案，这些服务的全部好处将无法实现。由于多媒体应用的高带宽特性，网络可能崩溃，以及由于这些应用的无响应性，其他网络流观察到的性能不佳，现有的协议套件无法提供所需的功能，媒体感知传输协议的研究已经过时。本研究的重点是可靠的多媒体服务的端到端解决方案的设计和评价。尽管如此，开发一个通用的解决方案，以满足当今广泛的多媒体应用的需求，是一项具有挑战性的任务。这样的方法要么会导致一个远远超出真实的实现的不必要的复杂协议，要么会导致一个不能利用媒体的特定功能的非常高级的协议。研究人员的目标是开发一套多媒体传输协议（MMTP），以这样一种方式整合媒体属性，应用程序的要求，和网络特性，表示质量是最佳的率失真的意义。