基于KAD网络的P2P流媒体点播系统节点路由算法的研究和改进

THE RESEARCH AND IMPROVEMENT OF ROUTING ALGORITHM FOR P2P VOD SYSTEM BASED ON KAD NETWORK

P2P流媒体的点播研究目前是个热点。在P2P Kademlia网架构分析的基础上,设计开发了一套基于KAD网络的P2P流媒体点播系统。首先描述了P2P Kademlia网络本身的路由与查找机制,之后提出了基于KAD网的P2P流媒体点播系统架构。然后重点描述了基于Kademlia网络的P2P流媒体的节点路由和查找改进算法,主要包括网络中P2P节点的加入机制、媒体资源发布机制、媒体资源的搜索和节点的离开机制等。通过对比实验,证明了本算法和方案支持P2P网络中的节点高效率的路由查找和维护,同时增强了P2P流媒体点播网络的健壮性和扩展性。最后展望了该领域的主要研究方向。

Nowadays, the research and development of P2P streaming VOD is a attractive field, this paper＇ s work designs and develops a novel VOD system based on P2P Kademlia network protocol. Firstly ,This paper introduces the routing and searching algorithm of P2P KAD network itself. And then we describes the P2P VOD system architecture based on KAD network. Based on the novel architecture, we propose the improvement algorithm of routing and searching mechanism in P2P streaming VOD architecture, including the node joining, media resource publishing, media resource searching and node leaving mechanism. The implementation scheme and contrast experiment proves that this novel algorithm and solution can support the node routing and maintenance in the P2P network efficiently and can improve the robust and scalability of the novel P2P VOD system. At the end,we analyze the prospective research direction and challenges in this field.