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Design and Implementation of P2P VOD system model and simulator

Author: WangYongHeng
Tutor: LuXianLiang
School: University of Electronic Science and Technology
Course: Computer System Architecture
Keywords: Video on Demand Mathematical model Simulator Discrete event driven unchoke algorithm
CLC: TN948.64
Type: Master's thesis
Year: 2008
Downloads: 95
Quote: 1
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Abstract


With the continuous development of network transmission equipment, video-on-demand (VOD) has become the network increasingly popular network applications. Centralized network model of the traditional video-on-demand service using the server / client (Client / Server), faced with the problem of limited network bandwidth and system capacity. This leads to the server is overburdened, support a limited number of customers, poor program playback. Peer-to-peer networks (P2P) technology to break the traditional C / S mode, each node in the network are peers, both act as a server providing upload, download and act as a client to enjoy. P2P technology is a good solution to the problem of network bandwidth, and reduce the burden on the server. P2P technology because of its scalability, fault tolerance, robustness characteristics has been a rapid development, and gradually applied to the field of video-on-demand. Based on the Beijing Municipal Science and Technology Commission, \static mathematical model, and focuses on the pressure of the streaming media server and node cache quantitative relationship between the length of the video file. This paper proposed a generic P2P framework existing P2P protocols and P2P simulator, and so VOD simulator was designed and implemented. VOD simulator to simulate the different VOD protocol, VOD system protocol optimization direction. The simulator uses a message-level simulation mechanism, so that the simulator can run on a machine can. The simulator uses a discrete event-driven thinking, the entire video-on-demand process is broken down into a number of sub-processes, each sub-process is triggered by a specific event. The simulator is divided into event scheduling module, network topology module, protocol processing module input output module. The event scheduler is the core of the whole system, it completed a variety of events in chronological order and scheduling, and drive the whole system running. The network module using the GT-ITM network topology by BRITE, and taking into account the underlying network bandwidth and delay factors. The completion of the protocol processing module simulation VOD agreement the mass overlay network generates protocol interaction information described, the input and output modules for pointing protocol parameters and output results. The simulator support VOD system simulation, and BT protocol. Three kinds unchoke algorithm design incentives and with the existing BT's unchoke algorithm on a comparative analysis of the importance of incentives.

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CLC: > Industrial Technology > Radio electronics, telecommunications technology > TV > TV and television equipment > Television Center Management System > Video on Demand System
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