A cooperative video-streaming transmission strategy in information-centric networks

Hyper-dense network is a promising solution to the high mobile video traffic. However, it has some fundamental problems. To address these issues, we propose a novel information-centric cooperative video transmission strategy in hyper-dense networks via caching. In the proposed scheme, each video file is encoded into segments using maximum distance separable rateless code. Then, a portion of each segment is cached at a certain small-cell base station (SBS), so that the SBSs can cooperatively transmit these segments to users without incurring high payload backhaul. To deal with interference, interference alignment (IA) is adopted, which is combined with the greedy algorithm to transmit video-file segments to these users. Simulation results show that the proposed video transmission scheme can reduce the waiting delay when watching real-time videos and thus improve the quality of experience.