Social Context-Aware Routing Algorithms in Opportunistic Networks
Xu Fan · Dianzi xuebao · 2015
The pervasive deployment of wireless smart devices stimulates the development of ad hoc networks. Such networks,also referred as opportunistic networks,are intermittently connected and represent a paradigm shift of forwarding data in an ad hoc manner. A recent trend is looking at social relationships,inferred from the social nature of human mobility,to bring messages close to a destination. We addressed this challenge by presenting a social context-aware opportunistic routing( SCOR). In this novel protocol,social context information of the network was exploited to predict the mobility patterns of nodes based on the back-propagation neural networks model. The routing scheme considered both the spatial and the temporal dimensions. If the recipient was present in the same connected region of the network as the sender,the message was delivered by synchronous method,or else the message was delivered by asynchronous method. The evaluation analysis and the simulation results indicate that for the social context-based routing algorithms in opportunistic networks,SCOR solution outperforms other routing solutions due to its ability to maximize the delivery ratio and to minimize the network overhead.