A Video Stream Transmission Control Algorithm Based on Priority Differentiation
Qi Wang · Computer Technology and Development · 2011
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.