16.18.3 Altitude-based Reporting for Aerial UE Communication

An Aerial UE can be configured with altitude-dependent, event-based measurement reporting (i.e., eventH1 and eventH2 as defined in TS 38.331 [12]). An Aerial UE sends a measurement report when its altitude becomes higher or lower than configured threshold. The UE includes its altitude and location information in the measurement report if configured to do so by NG-RAN.

The Aerial UE can also be configured to trigger measurement reporting only when both an altitude-dependent condition and an RSRP/RSRQ/SINR-based condition are met (i.e., eventA3H1, eventA3H2, eventA4H1, eventA4H2, eventA5H1 and eventA5H2 in TS 38.331 [12], commonly denoted as eventAxHy). For the content of eventAxHy measurement report, the same rules as described above for eventH1 and eventH2 apply.