Design And Implementation Of Information Space In Instlink Communication System

With the rapid development of Internet, people's demands on information space are more and more intense, which promote information space system to be more open, distributed, collaborative and dynamic. In the traditional information space system,it's difficult to achieve these features.To solve the problem,we propose a type of information space based on XMPP protocol and publish subscribe model,which can meet the needs of open,scalable and the performance of computing and storage.Depending on the application requirements, this paper relies on the Instlink multimedia communication system, and proposes a complete model and discusses the choices of the relevant protocols and technologies. Then it extends the publish subscribe protocol, so as to meet the needs of information space model.According to the protocol, a information space platform based on publish subscribe model which contains personal information space, group information space and subject information space is designed and implemented. The innovation of the system is the use of the XMPP protocol to enable the scalability, while meet the demands of practical application.