Enhancing the Performance of Video Streaming in Wireless Mesh Networks |
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Authors: | Xiaoling Qiu Haiping Liu Dipak Ghosal Biswanath Mukherjee John Benko Wei Li Rashmi Bajaj |
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Affiliation: | 1.Computer Science Department,University of California,Davis,USA;2.Department of Electrical and Computer Engineering,University of California,Davis,USA;3.School of Engineering and Computer Science,Victoria University of Wellington,Wellington,New Zealand;4.France Telecom Research Lab,South San Francisco,USA |
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Abstract: | Multihop wireless mesh networks (WMNs) provide ubiquitous wireless access in a large area with less dependence on wired networks.
However, some emerging applications with high bandwidth requirement and delay and loss constraints, such as video streaming,
suffer poor performance in WMNs, since high compression rates and/or high packet loss rates deteriorate the video quality.
In this paper, we propose a novel mechanism composed of (1) a network route selection scheme which provides paths for multiple
video streams with the least interference, called Minimum Interference Route Selection (MIROSE) and (2) an optimization algorithm
that determines the compression rates depending on the network condition, called Network State Dependent Video Compression
Rate (NSDVCR) algorithm. Simulation results of the proposed mechanisms show the significant improvement of the video quality
measured with a popular metric, Peak-Signal-to-Noise Ratio (PSNR), compared with standard routing and default compression
rates. |
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