Key Technologies Of P2P-based Information Distribution

With the rapid increase of operational information and network users, especially large amount of streaming media and dynamic contents, the application of operational images and streaming media can make battlefield situation more visual and demand more network bandwidth. The thrust of information distribution strategy is to improve the ability of information distribution system.Aiming at achieving the share and flow of operational information, an information distribution strategy based on the application-layer multicast protocol is presented. Key technologies in the strategy are studied from the aspects of information route, information resource organization and basic information services. The aim of the study is to provide an effective and fast information distribution mechanism in operational situations. The work done is as follows:(1) On the basis of study of CAN, Bayeux, Scribe, an operational information distribution model is presented.(2) Information distribution strategies of Pull, Push and Smart-Pull are compared. Based on the comparison, a more effective information distribution strategy is presented, in which route algorithm, message format, data distribution algorithm are designed.(3) The information distribution verification system proposed in the paper is designed and implemented. The architecture is designed. Message format and processing is defined. Application module of information distribution processing is implemented. Application protocol in bottom layer is improved. Finally second development interface is given.