标题: | 点对点影音串流系统的开发与研究 Study and implementation of reliable peer-to-peer streaming system |
作者: | 刘家铭 Liou, Chia-Ming 萧旭峰□ Hsiao, Hsu-Feng 多媒体工程研究所 |
关键字: | 点对点影音串流系统;P2P streaming system |
公开日期: | 2010 |
摘要: | 目前有越来越多影音服务架构在peer-to-peer(P2P)系统中。然而,建立一个即时点对点影音串流系统充满了许多挑战。在本论文中,我们企图建立一个稳定的点对点影音串流系统。首先,我们选择了网状结构当作网路拓扑的结构。因为有了网状结构为基础,使用者的高流动率对系统的影响较小;接下来,我们动态地选择适合自己的父节点,挑选的标准由四个参数决定。此外在编码方面,从原始资料依序进行影音编码和信道编码。藉由影音编码,我们节省了全部要发送的总资料量;而经由信道编码,让我们节省了同侪之间资料沟通的讯息并加强了资料的保护。在我们实作系统的过程中,我们发现了一些实作上的议题,藉由这些议题,使我们的即时串流系统更加稳定。最后,在NS2模拟也显示了我们方法的稳定性。 Nowadays, there are more and more video streaming services based on peer-to-peer architecture. There are many challenges to build a real time peer-to-peer streaming system. In this paper, we attempt to construct a stable peer-to-peer streaming system. At the beginning, we choose the mesh-based structure to construct the peer-to-peer overlay network. The whole system is more robust when dealing with peer churn because of the mesh-based structure. Next, we dynamically choose the parents that are suitable to us by four factors. Furthermore, the original data from source is encoded by video coding and channel coding sequentially. With video coding, we save the total size of data to send. With channel coding, we save a lot of data coordinate messages for peers and enhance the protection of data. During the process of building our system, we find some important implementation issues to make our peer-to-peer streaming system more stable. Finally, the NS2 simulation also shows the stability of the method we proposed. |
URI: | http://140.113.39.130/cdrfb3/record/nctu/#GT079657521 http://hdl.handle.net/11536/43529 |
显示于类别: | Thesis |
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