QoS-Aware User Association and Transmission Scheduling for Millimeter-Wave Train-Ground Communications

With the development of wireless communication, people have put forward higher requirements for train-ground communications in high-speed railway (HSR) scenarios. help mobile relays (MRs) installed on roof train, application Millimeter-Wave (mm-wave) communication which has rich spectrum resources to system can realize high data rate, so as meet users’ increasing demand broad-band multimedia access. Also, full-duplex (FD) technology theoretically double spectral efficiency. In this paper, we formulate user association and transmission scheduling problem mm-wave with MR operating FD mode a nonlinear programming problem. order maximize throughput number users meeting quality service (QoS) requirements, propose an algorithm based coalition game solve challenging NP-hard problem, also prove convergence Nash-stable structure proposed algorithm. Extensive simulation results demonstrate that effectively improve QoS many possible, certain awareness.