DocumentCode :
1989709
Title :
Distortion-Delay Tradeoff in Real-Time Wireless Video Scheduling
Author :
Zhou, Liang ; Rodrigues, Joel ; Vasilakos, Athanasios V.
Author_Institution :
Dept. of EE &IT, Tech. Univ. Munchen, München, Germany
fYear :
2010
fDate :
6-10 Dec. 2010
Firstpage :
1
Lastpage :
5
Abstract :
Existing scheduling schemes for real-time wireless video services generally focus on system throughput or delay, and do not take into account the relationship between the transmission delay and video distortion. In this paper, we develop and evaluate a delay-distortion-aware wireless video scheduling scheme in the framework of cross-layer information adaptation. At first, we construct a general video distortion model according to the observed wireless network parameters, as well as each video sequence´s rate-distortion characteristic. Then, we exploit a distortion-aware wireless video scheduling scheme and derive a bound on the asymptotic decay rate of the video distortion. Furthermore, the relationship between the delay and distortion is studied by taking into account video application delay and distortion requirements for specific wireless network environments. The proposed scheme is applied to heuristically find optimal tradeoff between the delay and distortion. Extensive simulation results are provided to demonstrate the effectiveness and feasibility of the proposed scheme.
Keywords :
delays; distortion; radio networks; scheduling; video communication; asymptotic decay rate; cross-layer information adaptation; delay-distortion-aware wireless video scheduling scheme; distortion-delay tradeoff; general video distortion model; real-time wireless video scheduling; system throughput; transmission delay; video application delay; video sequence rate-distortion characteristic; wireless network parameters; Delay; Interference; Nonlinear distortion; Streaming media; Throughput; Wireless networks;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Global Telecommunications Conference (GLOBECOM 2010), 2010 IEEE
Conference_Location :
Miami, FL
ISSN :
1930-529X
Print_ISBN :
978-1-4244-5636-9
Electronic_ISBN :
1930-529X
Type :
conf
DOI :
10.1109/GLOCOM.2010.5683568
Filename :
5683568
Link To Document :
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