Design of a peer-to-peer video-on-demand system with the consideration of fault exception

Early departure of customers during video playback brings a great impact on the design of a peer-to-peer (P2P) video-on-demand (VoD) system, especially on the system bandwidth requirement and the need for a well-defined fault exception mechanism. In this paper, we develop an analytical model to evaluate how the system parameters such as bandwidth requirement and batching time in a P2P batching system are affected when early departure behavior is taken into account. In addition, a fault exception mechanism is also proposed. Computer simulations are performed to verify the correctness of the model. The results show that the system resources can be utilized more effectively when the customer departure behavior is captured into the system.