基于域的多层结构P2P应用层多播协议模型RLP2P研究

Study on P2P Network Model of RLP2P for Application Layer Multicast Protocol with Multi-Layer Architecture Based on Region

以"小世界"模型为理论基础,以层和域为基本逻辑管理单位,按用户需求和共享目的组织域,提出了基于域的多层结构P2P应用层多播协议模型RLP2P,并实现了系统原型.给出了域的划分策略和数学模型,证明了模型的正确和合理性;使服务定位和查询从网络中的所有结点数降低到域内的节点数,有效地防止恶意请求引发的洪,网络系统控制开销为常数.模拟分析表明,RLP2P模型可有效解决可扩展性、性能与效率不高问题,且网络规模越大,其综合性能的优越性越明显.

<Abstrcat>By using the 'small world' model as the theoretical foundation in the light of users' requirement and a shared organization layer and region of logic manage-unit, a new application layer multicast protocol model of RLP2P with multi-layer structure based on region was proposed, and its prototype system was implemented. This paper has provided a classifying strategy and a mathematical model of region, and proved the exactitude and rationality of the model. It has brought about a number of nodes locating and querying service down to that of region, so as to effectively control the request flooding produced by network, and the control overhead of network system tended to be a constant. Simulation results of RLP2P's protocol showed that it could effectively solve the above mentioned problems, and the larger the network size, the more obvious the superiority of its comprehensive performance.