Research on the initial beam correlation scheme for UAV-assisted 5G HetNet

Abstract

The ground 5G base station provides low-frequency control signals to complete the control of the initial beam access. The aerial unmanned aerial vehicle(UAV) base station provides data services for the ground users. The heterogeneous network(HetNet) formed by the ground 5G base station and high-altitude UAV becomes an important research direction of integrated communication between heaven and earth in the future. In this paper, based on beam scanning and downlink control pilot multiplexing technology, an initial beam association mechanism for heterogeneous network architecture of UAV is proposed. While the upper and lower bounds of system coverage are given, the deployment optimization parameters corresponding to higher beamforming gain are obtained through simulation evaluation.

Keywords

• unmanned aerial vehicle (uav); initial beam association
• pilots reused
• heterogeneous network(hetnet)