Energy-Efficient UAV Trajectory Design with Information Freshness Constraint via Deep Reinforcement Learning

Table 1

Simulation parameters for the UAV communication system.

Symbol	Description	Value
	Bandwidth	1 MHz
	Transmit power of users	23 dBm
	Noise power	−100 dBm
	Number of ground devices	30
	Number of UAVs	3
	Number of UAV’s directions	10
	UAV flight height	80 m
	Flight speed	20 m/s
	Maximum energy of UAVs	1.5696 × 10^5 J
	Channel parameters	[10, 0.6]
	Distance threshold	1 m
	Coefficient of rest energy	0.1
	AoI threshold	500