Social Groupcasting algorithm for wireless cellular multicast services

In this letter, we propose a cooperative multicasting algorithm called a social groupcasting algorithm (SGA), in which the members of a social network group download the content over a wireless cellular link and disseminate it among them over a short-range ad-hoc wireless network. While only one member downloads the content, our proposed SGA dynamically changes the downloading member according to channel quality, remaining energy to distribute the content downloaded and social fairness. We characterize the SGA in terms of the social groupcasting gain relative to the social network group size and social fairness in comparison with conventional multicasting algorithm and also discuss the energy consumed for disseminating the content over a short-range ad-hoc network.