A Push-based Opportunistic Communication Using Content and Social Role Awareness in Mobile Opportunistic Social Networks ⋆

With the development of mobile intelligent devices, and social relations between carriers and devices, mobile opportunistic social networks have been eroded over time. In the network, the network topology and the message content have an impact on the performance of network communication. In order to make nodes communicate better, we propose an algorithm of pushing mechanism based on content and social role-awareness (Protocol of Content and Social Role-awareness, referred to PCSR). In this mechanism, we assign roles for the encounters by analyzing the context of encounters and connections between nodes. Then corresponding pushing ways are designed according to the roles. In the experiment, PCSR shows a higher global precision and recall comparing with PrefCast. Meanwhile, we analyze the PCSR algorithms in maximum moving distance of nodes, survival time of message and similarity thresholds.