Exploiting Multi-Node Device-to-Device Communications for Wireless Video Delivery over Cellular Networks

The video is a popular service among users which plays an important role in the networks traffic and has hugest volume of data compared to other types of communications. In recent years, the great willingness of users to watch live videos has attracted the researchers to the networks equipped with content saving devices in which the video content is saved in advance within the edge devices (small stations and smart devices) for fast delivery. In this paper, we have proposed a new method to send the video content based on the D2D connection and providing a multi-connection and multi-user opportunities. According to the random nature of the popularity of video content and the random demands of users in the network, the authors of the article use the random distribution of popularity among users to investigate the probability of sending the same content to some users simultaneously. In this method, the requests of some users are answered by one response. Extensive simulations results of the proposed method reveals the important effect of the random distribution of video content popularity and show that using multi-link D2D connections can cause significant improvements in the efficiency of the network in term of the network throughput.