Mobile media service distribution in device-to-device communication underlaying cellular networks

摘要

Device-to-device (D2D) communication has been widely studied to improve network performance and it has been considered as a potential technological component for the next generation of communication. Targeting the video distribution, a significant challenge in D2D communication network is to efficiently provide media services with the constraints of limited resources, user's mobility, opportunistic contact. In this paper, we have developed a distributed media service scheme based on QoE (Quality of Experience) model that jointly solves the content dissemination, cache update problems for cellular networks. Importantly, our work aims at achieving maximal users' MOS (Mean Opinion Score) by jointly considering media-aware, random walking models and epidemic model. Extensive simulation results have been provided, which demonstrate the effectiveness of our proposed schemes.