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We propose behavior-oriented services as a new paradigm of communication inmobile human networks. Our study is motivated by the tight user-networkcoupling in future mobile societies. In such a paradigm, messages are sent toinferred behavioral profiles, instead of explicit IDs. Our paper provides asystematic framework in providing such services. First, user behavioralprofiles are constructed based on traces collected from two large wirelessnetworks, and their spatio-temporal stability is analyzed. The implicitrelationship discovered between mobile users could be utilized to provide aservice for message delivery and discovery in various network environments. Asan example application, we provide a detailed design of such a service inchallenged opportunistic network architecture, named CSI. We provide a fullydistributed solution using behavioral profile space gradients and small worldstructures.  Our analysis shows that user behavioral profiles are surprisingly stable,i.e., the similarity of the behavioral profile of a user to its futurebehavioral profile is above 0.8 for two days and 0.75 for one week, and remainsabove 0.6 for five weeks. The correlation coefficient of the similarity metricsbetween a user pair at different time instants is above 0.7 for four days, 0.62for a week, and remains above 0.5 for two weeks. Leveraging such a stability inuser behaviors, the CSI service achieves delivery rate very close to thedelay-optimal strategy (above 94%), with minimal overhead (less than 84% of theoptimal). We believe that this new paradigm will act as an enabler of multiplenew services in mobile societies, and is potentially applicable inserver-based, heterogeneous or infrastructure-less wireless environments.

CSI: A Paradigm for Behavior-oriented Delivery Services in Mobile Human Networks