Exploiting Multi-Hop Relay to Achieve Mobility-Aware Transmission Scheduling in mmWave Systems

With the explosive growth of mobile traffic, millimeter wave (mmWave) systems have gained considerable attention from both academia and industry. Although relaying and concurrent transmissions have been utilized to improve the system performance, dynamics due to human mobility are still challenges for mmWave systems. In this paper, we propose a high throughput service scheduling (HTSS) scheme, which exploits multi- hop relay and concurrent transmissions to enhance throughput with the consideration of human mobility. In HTSS, we develop a relay path planning algorithm to establish multi-hop relay paths, and then utilize a global time scheduling algorithm to compute transmission scheme to achieve mobility-aware optimization. Through extensive evaluations under realistic human mobility trajectories, we demonstrate the superior performance of HTSS in terms of the system throughput compared with the state-of-the-art schemes.