| Along with the rapid development of information technology, the users'demand continuously raise, it has been very difficult for people to content with sitting in front of computer to obtain information and resources. The users'alternate mode presents a trend of diversification, plenty of social software, which becomes mobile social software, expands to mobile platform. At the same time, the network suppliers start to provide wireless network service that is more and more perfect, which makes increasing number of people even more like to enjoy a variety of services on the Internet with mobile devices, therefore mobile social software grow profusely and quickly with the tide of the times which provide larger convenience for people's life and work.Mobile social software is an emerging area of research which still has many deficiencies. In mobile social software system, because of nodes'selfishness and their autonomy of contribute resources, they all hope to acquire resources rather than sharing resources, which makes the performance of mobile social software system in mobile environment greatly reduce, in order to keep mobile social software system going orderly and fine, it is very necessary to present a sort of incentive mechanism which can urge the nodes consciously contribute resource and take part in network together.The incentive mechanism is the most basic and nuclear demand in mobile social software system and it is the key to ensure mobile social software system run orderly. Consequently it needs to consider how to construct the useful incentive mechanism that suits to mobile social software system. In view of the above-mentioned question, this paper analyzes the typical mobile social software system based on the existing theory and research, and it adds and improves the formal definition of mobile social software system. The architecture of mobile social software middleware layer is proposed, after that a kind of fair cooperation incentive mechanism is raised on the basis of summarizing the various incentive mechanisms and considering a series of appraisal factor synthesize, which is fit for mobile social software.The main work of this paper is as follows:Firstly, this paper introduces the background as well as the state in domestic and abroad of this research, illustrates the structure ideology and the scope of these incentive mechanisms in detail, which commonly is used in peer to peer network. Also it compares these incentive mechanisms explicitly in several aspects.Secondly, the typical mobile social software systems are analyzed and their characteristics are given. The formal definition of mobile social software system is complemented and improved that base on the existing definition. This paper proposes the architecture of middleware layer where incentive mechanism locates in mobile social software system.Thirdly, after the analysis of incentive mechanisms in peer to peer network, the fair cooperation incentive mechanism which bases on the differential service mechanism for mobile social software system is proposed. It encourages the cooperation between nodes, and it takes into account the nodes'level of access and participation from the perspective of fairness and cooperation, at last the level of the node when it visits the resource of system is given. Meanwhile this paper also proposes the strategy on increasing the effectiveness of the peers. Fair cooperation incentive mechanism optimizes the resource sharing of rational node in mobile social software system, and encourages free riders to change their strategy that contribute more resources in order to get better service. The mechanism also encourages the sending nodes forwarding the request to the nodes who receive the request little. This paper still gives the solution for avoiding the whitewashing of mobile social software system.At last, the simulation experiment of fair cooperation incentive is made, and the output results are analyzed to test the effectiveness and the scalability of these algorithms. |
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