Rate-distortion optimized multi-path selection for video streaming over wireless multi-hop networks

被引：2

作者：

Zhang X.-G. ^{[1
]}

Guo Z.-M. ^{[1
]}

机构：

[1] Institute of Computer Science and Technology, Peking University

来源：

Ruan Jian Xue Bao/Journal of Software | 2011年 / 22卷 / 10期

关键词：

Multi-hop wireless network; Multi-path routing; Path selection; QoS of video streaming; Rate-distortion;

D O I：

10.3724/SP.J.1001.2011.03884

中图分类号：

学科分类号：

摘要：

With the increase in bandwidth and computing power of wireless devices, video applications over wireless ad-hoc networks are expected to become widespread in intelligent vehicles, emergency communication, and battlefield command. However, a crucial problem is how to select the best paths for video streaming of qualify-on-service (QoS) in multi-hop wireless networks. Most of the existing research done on this topic tend to ignore the impacts of time-varying channel and wireless interference on the quality of multi-path video streaming. This paper proposes an optimized multi-path selection algorithm which takes not only network congestion into account, but also interference. Packet collision and delay in a MAC layer is predicted using the interference model. Each node is modeled as an M/M/1/K queuing system. Packet delay and loss, due to congestion, are predicted using the queuing theory. The distortion of path is defined as a function of packet losses and delays along the path. The paths with the minimum estimated distortion are selected as the optimal routings. Extensive experiments in NS-2 simulation environment have been carried out. The experimental results show that this algorithm achieves a certain level of satisfaction in the QoS of video streaming. © 2011 ISCAS.

引用

页码：2412 / 2424

页数：12

共 23 条

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