Cooperative data forwarding strategy with privacy preservation

In the MSN, users rely on the opportunistic contacts for cooperative data forwarding. Unlike conventional wireless relay networks assuming end-device to be insensate, users have specific social features, e.g., privacy concerns and selfishness, and they will choose a data forwarding strategy under the impacts of these features. For example, when privacy preservation of users is applied, users become unrecognizable to each other and the social ties and interactions are no longer traceable. In this case, there is no obvious incentives for users to be cooperative on data forwarding. Thus, due to the selfish behavior, the cooperative data forwarding could be severely interrupted or even disabled.