An Efficient Algorithm for Multimedia Delivery in Pervasive Space

2009 IEEE International Symposium on Parallel and Distributed Processing with Applications Pub Date : 2009-08-18 DOI:10.1109/ISPA.2009.34

S. Zhang, Zhuzhong Qian, M. Guo, Sanglu Lu

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引用次数: 1

Abstract

Service composition is an effective approach for multimedia delivery in pervasive environment. In previous works, there is one fixed functional path which is composed of several underlying services in a certain order. Actually, there are several functional paths delivering different quality level multimedia from the source to the end user. Due to the dynamicity and mobility of pervasive space, system should generate a reliable and low-delay service path for multimedia delivery in real-time. Since some multimedia service components change the data transmission volume which has a deep impact on the transmission delay, it makes the media delivery problem equal to Multi-Constrained Path problem which is known to NP-Complete. We propose an efficient algorithm LD/RPath(Lowest Delay/Reliability Path) for adaptive multimedia delivery. LD/RPath generates a low-delay service path based on several functional paths with reliability guarantee. Experiment results show that LD/RPath has a good performance and it is an effective algorithm for multimedia delivery in pervasive space.

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一种有效的普适空间多媒体传输算法

服务组合是普适环境下实现多媒体交付的一种有效方法。在以前的工作中，有一条固定的功能路径，它由几个底层服务按一定顺序组成。实际上，有几个功能路径将不同质量水平的多媒体从源传输到最终用户。由于普适空间的动态性和移动性，系统需要为多媒体实时传输提供可靠、低时延的服务路径。由于某些多媒体业务组件改变了数据传输量，这对传输延迟有很大的影响，使得媒体传输问题等同于NP-Complete中的多约束路径问题。我们提出了一种有效的自适应多媒体传输算法LD/RPath(最低延迟/可靠性路径)。LD/RPath在多条功能路径的基础上生成一条低时延、可靠性保证的业务路径。实验结果表明，LD/RPath具有良好的性能，是一种有效的普适空间多媒体传输算法。

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2009 IEEE International Symposium on Parallel and Distributed Processing with Applications

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