Millimeter-Wave-Based Cooperative Backhaul for a Mobile Station in an X-Haul Network

In this paper, we propose a millimeter-wave-based cooperative backhaul scheme for a mobile X-haul distributed unit (XDU), whose line of sight for backhaul data reception is not always guaranteed in an X-haul network. Since the received signal at the mobile XDU experiences severe path loss than other stationary XDUs, the proposed scheme selects one of stationary wireless XDUs as a relay for assisting the mobile XDU. The relaying XDU selection takes into account not only the location information, but also the load information of wireless XDUs. We derive the outage probability of the mobile XDU and show that the proposed scheme outperforms the conventional relay selection scheme without taking account of the traffic load on relaying nodes.