Frame bit assignment algorithm in mobile P2P video streaming media architecture
Guiyi Wei · Journal of Circuits and Systems · 2010
In a mobile P2P architecture for streaming media system, there are multi-video-sources. Based on the feature, a serial scheduling algorithm and a parallel scheduling algorithm are proposed. If the QoS, monitored by the receiving-peer, is degraded, the serial scheduling algorithm triggers the video source change event and the multi-video source is synchronized by the time model of the streaming sequence. If the multi-video source concurrently sends the data to the receiving-peer, the parallel scheduling algorithm assigns the transmission task by frame-bit assignment strategy. The frame bit algorithm firstly divides the video sequence into a series of blocks where there is the fixed number of frames, and then assigns all bits in block level to consider the frame interaction. For a bits allocation problem of each block, it is models as a nonlinear programming problem, and then it is transformed into a general linear programming based on the piece linear R-D model. At last a greedy algorithm is proposed. The experiment results show our algorithm has the high and smooth video quality and its time complexity is lower, which can meet with the real time requirement of mobile P2P video streaming media system.