Distributed scheduling for video streaming over multi-channel multi-radio multi-hop wireless networks

Authors:
Liang Zhou;Benoit Geller;Baoyu Zheng;Sulan Tang;Jingwu Cui;Dengyin Zhang
Affiliations:
ENSTA-ParisTech, Paris, France;ENSTA-ParisTech, Paris, France;Nanjing University of Posts and Telecommunications, Nanjing, China;Nanjing University of Posts and Telecommunications, Nanjing, China;Nanjing University of Posts and Telecommunications, Nanjing, China;Nanjing University of Posts and Telecommunications, Nanjing, China
Venue:
GLOBECOM'09 Proceedings of the 28th IEEE conference on Global telecommunications
Year:
2009

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Abstract

An important issue of supporting multi-user video streaming over wireless networks is how to optimize the systematic scheduling by intelligently utilizing the available network resources while, at the same time, to meet each video's QoS (Quality of Service) requirement. In this work, we study the problem of video scheduling over multi-channel multiradio multi-hop networks with the goals of minimizing the video distortion. At first, we construct a general distortion model according to the network's transmission mechanism, as well as video's rate-distortion characteristics. Then, by joint considering the channel assignment, rate allocation and routing, we develop a fully distributed scheduling scheme to get an optimal QoS performance. Furthermore, the realization of the distributed scheduling scheme through cooperation among the channel, link and source is the highlight of this paper. Extensive simulation results are provided which demonstrate the effectiveness of our proposed scheme.