A Novel Cell Deployment for UAM Communications in 5G-Advanced Network.

In recent years, urban air mobility (UAM) has been recognized as a promising solution to minimize the delay of transportation or moving goods in urban areas. UAMs are expected to improve the convenience of daily life by drastically changing key aspects of transportation, commerce, public safety, and medical services which are sensitive to delay. With the commercialization of UAM service on the track, it is becoming more evident that improvements to cellular networks are needed to support UAM in various aspects. Reflected on the existing LTE UAV based on sidelobe beam, we regard the requirements for cellular network based UAM communication is not satisfied yet. With aerial cells, UAM communication network becomes manageable and flexible where the flexibility relies on selected position or density of base station providing aerial cells, and implementation friendly solution is proposed with the possible reuse or sharing of base station between terrestrial communication and UAM communication. Achievable performances is verified by aerial link SNR or aerial link geometric SINR, and the gain is also compared with legacy solution supporting cellular network based aerial communication. The proposed solution showed sufficient link level performance to support UAM communication with the requirement defined in this paper.