A Network-aware Scalable Video Congestion Control Mechanism in Heterogeneous Wireless Networks

2006 International Multi-Conference on Computing in the Global Information Technology - (ICCGI'06) Pub Date : 2006-08-01 DOI:10.1109/ICCGI.2006.89

Yinglei Fan, Fang Su, Yong Li, Huimin Xu

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引用次数: 2

Abstract

Providing quality-of-service (QoS) for video delivery in heterogeneous wireless networks is a challenging problem. To have QoS provision at application level, effective congestion control is very necessary. We investigate this problem and present a network-aware scalable video congestion control mechanism in heterogeneous wireless networks. The mechanism not only adapts to the dynamical network condition, but also improves the perceived visual QoS. In this control mechanism, first, each layer of the scalable video is given different protection in terms of packet loss and delay. Secondly, we monitor or model the bottle link to estimate the available network bandwidth dynamically. Thirdly, the QoS mapping module translates the QoS exponents to the effective capacity according to the effective capacity theory. Lastly, the congestion control mechanism adjusts the scalable video according to the compare result between the estimated bandwidth and the requested effective capacity. Finally, simulation results demonstrate effectiveness of our congestion control mechanism

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异构无线网络中网络感知的可扩展视频拥塞控制机制

为异构无线网络中的视频传输提供服务质量(QoS)是一个具有挑战性的问题。为了在应用层提供QoS，有效的拥塞控制是非常必要的。我们研究了这一问题，并提出了一种异构无线网络中网络感知的可扩展视频拥塞控制机制。该机制既适应了动态网络条件，又提高了感知的视觉QoS。在这种控制机制中，首先，对可扩展视频的每一层在丢包和时延方面给予不同的保护。其次，我们监测或建模瓶链接，以动态估计可用的网络带宽。第三，QoS映射模块根据有效容量理论，将QoS指数转换为有效容量。最后，拥塞控制机制根据估计带宽和请求有效容量的比较结果来调整可扩展视频。最后，仿真结果验证了拥塞控制机制的有效性

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

2006 International Multi-Conference on Computing in the Global Information Technology - (ICCGI'06)

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