用户需求感知的D2D视频分发机制 postprint

Abstract: In view of the current D2D multicast content delivery mechanism has a large amount of transmission redundancy, lead to low energy efficiency and low spectrum efficiency. This paper proposed a novel demand-aware D2D video distribution mechanism. By predicting users’ video service requests, the video is pushed to potential service users while distributing video for service request users. Firstly, the willingness of potential service users to accept video push is estimated based on the users’ interests, the popularity of the video and the residual-energy of the users’ devices. Secondly, the utility measure of video distribution service was proposed to measure the value of video distribution service, and the issue on energy efficiency of the optimal cluster heads was modeled. Finally, this paper proposed a D2D video distribution mechanism that optimizes the energy efficiency of cluster heads. Simulation results show that the proposed mechanism is superior to the traditional ones with regard to the energy efficiency of the cluster head and system throughput.