Research And Implementation Of Client/Server And Distributed Mobile Social Network System

With the popularity of the Internet and the rapid development of mobile intelligent devices, more and more users are accustomed to using mobile to communicating, mobile social networks emerged, there appears a large number of mobile social networking system. Mobile social networking system evolved from online social networks system, which have more ubiquitous and mobility, enhancing the contant between people. It also has been widespread concern by research industry and academia. In this case, it is very meaningful to research and implemente of mobile social networking system.In addition, for mode of mobile social network system, the client/server model has been very common. Now a large number of applications are based on this model, this approach can manage user centralized, providing various types of services, but must keep accessing to the Internet. In the scene which user does not want to access the Internet, because of lacking of support servers, social applications and services will not meet the demand for social communication of user. Therefore, there need a new status of social communication model to solve the situation.In this context, this paper designed and implemented two modes of mobile social networking system by Java and Android. One is a client/server model, one is a distributed mode based on Wi-Fi Direct. Client/server model focused to provide some functionality through server, including the friends operation, community operation, chat communications, and also add the popular location service in recent years based on Baidu SDK. The distributed mode main used for circumstances without network, which allows users to network and operations accordingly based on Wi-Fi Direct. It can be applied to a variety of special scene.This article also based features of mobile social networking which has fragments of time and mobility, from space, time and interests three aspects to consider the similarity of users, based on Direct and indirect similarity designed friends recommendation algorithm which has mobile social network properties. Then validate effectiveness of the algorithm and realize the algorithm on client/server model system.Finally for distributed systems, analysis the shortcomings of the network, improved algorithms for networking, and proposed the largest access network algorithm and the algorithm which has mobile social networking properties. Also do some simulate and verification analysis and implementation on a distributed system.