Method for performing measurement for aerial UE in wireless communication system and a device therefor

An aerial user equipment (UE) configured to operate in a wireless communication system, the aerial UE comprising:

• a Radio Frequency (RF) module;
• at least one processor;
• and
• at least one computer memory operably connectable to the at least one processor and storing instructions that, when executed by the at least one processor, perform operations comprising:
• receiving, from a base station via a Radio Resource Control (RRC) message through the RF module, information that indicates whether the aerial UE is to use one of a first triggering condition or a second triggering condition for measurement reporting to the base station and time-to-trigger information related to a period of time for triggering the measurement reporting, wherein each of the first triggering condition and the second triggering condition is related to altitude and speed of the aerial UE;
• and
• reporting, to the base station through the RF module, a measurement result based on the first triggering condition or the second triggering condition, and based on the time-to-trigger information,
• wherein reporting the measurement result comprises:
• based on the information in the RRC message indicating to use the first triggering condition, and based on the first triggering condition being satisfied:
• reporting a first measurement result related to each of the altitude and the speed of the aerial UE, wherein the first triggering condition includes (i) the altitude of the aerial UE is greater than a first threshold, and (ii) the speed of the aerial UE is greater than a second threshold during the period of time indicated by the time-to-trigger information;
• and
• based on the information in the RRC message indicating to use the second triggering condition, and based on the second triggering condition being satisfied:
• reporting a second measurement result related to each of the altitude and the speed of the aerial UE, wherein the second triggering condition includes (i) the altitude of the aerial UE is less than a third threshold, and (ii) the speed of the aerial UE is less than a fourth threshold during the period of time indicated by the time-to-trigger information.