Social-Aware Video Multicast Based on Device-to-Device Communications

Social-Aware Video Multicast Based on
Device-to-Device Communications

Abstract— Social-Aware Video Multicast Based on Device-to-Device Communications. To meet the explosive demand on delivering high-definition video steams over cellular networks, we design a Social-aware video multiCast < SoCast > system leveraging device-to-device (D2D) communications. One salient feature of SoCast is to stimulate effective cooperation among mobile users (clients), by making use of two types of important social ties, i.e., social trust and social reciprocity. By using SoCast, clients form groups to obtain missing < Final Year Projects 2016 >packets from other clients and restore incomplete video frames, according to the unique video encoding structure. In return, the user perception of the mobile video quality can be substantially improved. Specifically, we first cast the problem of social ties based group formation among clients for cooperative video multicast as a coalitional game, and then devise a distributed algorithm to obtain the core solution (group formation) for the formulated coalitional game.