Device-to-Device Multicast Content Delivery in cellular networks

Abstract

With the explosive increase of video traffic and content sharing applications among mobile devices such as smart phones and mobile tablets, device-to-device (D2D) technique has become attractive in the application to content delivery since it can effectively improve the resource efficiency of cellular network through proximal transmission. In this paper, we investigate D2D multicast content delivery in cellular networks and propose a multicast architecture for D2D content delivery. Based on the architecture, we analyze the performance of content delivery through D2D communications which provides a tool for evaluating the performance of D2D delivery. With these analyses, we can obtain the number of content requests in the network which is served by D2D content delivery and the average serving time through D2D multicast content delivery. Simulation results under different transmission parameters validate the proposed theory. And it demonstrates that the proposed architecture and methods are useful for the application of D2D communication technique to content delivery to offload cellular traffic and improve the resource efficiency of cellular networks.