关键词: 移动社交网络, 信息中心网络, 节点感知, 朋友圈, 路由机制

Abstract: In order to solve problems such as high latency and low delivery rate caused by time-varying of network topology and the node resource limitation in mobile social network (MSN), a friend circle and node awareness based content centric MSN routing mechanism (FACMR) is proposed, which leverages the features of content and location separation provided by information-centric networking (ICN) to better support terminal mobility and in-network caching. Firstly, the function table of the node model is clarified, which enables the node with the perceptive ability. Secondly, a friend circle is constructed based on the relationship strength between nodes and the similarity between cache contents, which guides routing quickly and efficiently. Thirdly, the cache feature and replacement strategy are used to maintain the friend circle. Finally, the network simulator 3 (NS3) is used to simulate FACMR. The simulation results show that FACMR can decrease the cache replacement rate by 6.35%, the number of packet errors by 22.9%, and the average routing delay by 43.5%, which indicates that FACMR is a more feasible and effective MSN routing mechanism compared with the existing typical algorithms.

Key words: mobile social network, information-centric networking, node awareness, friend circle, routing mechanism