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《Computer Technology and Development》 2011-02
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A Video Stream Transmission Control Algorithm Based on Priority Differentiation

WANG Ming-wei,LIN Jian-zhong,WANG Qi(College of Telecommunications and Information Engineering,Nanjing Universityof Posts and Telecommunications,Nanjing 210003,China)  
Video stream transmission control mechanism is very important to improve quality of service of internet.Video codec and transmission characteristics are analyzed,and inter-flow and intra-flow priority differentiation mechanisms are introduced.Then,a priority differentiation-based video stream transmission control algorithm(PDVT) is proposed.Different kind of video frame is marked with different priority and is schedured according to its priority.Inter-flow priority mechanism distinguishes MPEG stream and other streams,while intra-flow priority mechanism distinguishes different kinds of MPEG frame in a video stream.Simulation results show that the proposed algorithm PDVT can provide differentiated service for flows with different priority and can improve video transmission quality greatly.
【Fund】: 江苏省自然科学研究项目(09KJB520009)
【CateGory Index】: TN919.8
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