User-Information-Aware D2D Multicast File Distribution Mechanism

Abstract

There are a large number of redundant transmissions in current D2D multicast content delivery systems, which seriously reduces the utilization efficiency of resources. This paper designs a novel user-information-aware D2D video distribution mechanism. More specifically, by predicting users’ video requests, the video can be pushed to potential service requesters while distributing video for service requesters. Firstly, the willingness of potential requesters to accept the pushed video is estimated based on the users’ interests, the popularity of the videos and the residual-energy of the users’ devices, and the user-demand-aware clustering algorithm is proposed. Secondly, considering social and interference information, the utility metric of D2D multicast is proposed to measure the value of content distribution service. Finally, this paper proposes a D2D video distribution mechanism to optimize the utility value. Simulation results show that the proposed mechanism significantly improves throughput, energy and spectrum efficiency compared to the traditional distribution mechanism.

Socially Aware Device-to-multi-device User Grouping for Popular Content Distribution

“…Further, social tie also means demand similarity. SU selection, user grouping, and power and channel allocation in content push service, such as in work by Tulu et al [36], Huang et al [37], Feng et al [38], and Wu et al [39]. Moreover, Bai et al [40] proposed a hybrid pull/push scheme by D2MD based on an social tie threshold.…”

Device‐centric communication in IoT: An energy efficiency perspective

“…Rebecchi et al propose a learning‐based solution that dynamically selects multicast cellular or D2D for end users to guarantee the timely delivery of data. Xu and Huang et al introduce D2D multicast (D2MD) communication, where a D2MD cluster is formed by nearby users with the same service demands, and a cluster head node is selected by the base station. The content requested by the members of the D2MD cluster is sent to the cluster head, and then, cluster head relays the content to other cluster members by D2MD communication.…”