US 12,347,324 B2
Drone communication system and operation method thereof
Cheng-Shen Lee, Hsin-Chu (TW); Chih-Neng Tseng, Hsin-Chu (TW); and Kuan-Chou Ko, Hsin-Chu (TW)
Assigned to Coretronic Intelligent Robotics Corporation, Hsin-Chu (TW)
Filed by Coretronic Intelligent Robotics Corporation, Hsin-Chu (TW)
Filed on Sep. 18, 2023, as Appl. No. 18/468,743.
Application 18/468,743 is a division of application No. 17/020,813, filed on Sep. 15, 2020, granted, now 11,798,423.
Claims priority of application No. 201910924110.X (CN), filed on Sep. 27, 2019.
Prior Publication US 2024/0005799 A1, Jan. 4, 2024
Int. Cl. G08G 5/26 (2025.01); B64U 80/25 (2023.01); G08G 5/55 (2025.01); G08G 5/57 (2025.01); H04B 17/318 (2015.01); H04L 5/00 (2006.01); H04W 4/40 (2018.01); H04W 24/02 (2009.01); B64U 70/90 (2023.01)
CPC G08G 5/26 (2025.01) [B64U 80/25 (2023.01); G08G 5/55 (2025.01); G08G 5/57 (2025.01); H04B 17/318 (2015.01); H04L 5/0053 (2013.01); H04W 4/40 (2018.02); H04W 24/02 (2013.01); B64U 70/90 (2023.01); B64U 2201/104 (2023.01); B64U 2201/20 (2023.01)] 10 Claims
OG exemplary drawing
 
1. An operation method of a drone communication system, adapted for obtaining a plurality of base station coordinates corresponding to a plurality of base stations in a flight field, the operation method comprising:
communicating with at least three base stations adjacent to a parking apron apparatus to obtain at least three base station coordinates of the at least three base stations;
communicating with another base station adjacent to the at least three base stations through the at least three base stations, wherein a location of the another base station is covered by at least three communication ranges provided by the at least three base stations;
estimating another base station coordinate of the another base station according to the at least three base station coordinates of the at least three base stations; and
storing the plurality of base station coordinates and providing the plurality of base station coordinates to a drone parked on the parking apron apparatus,
wherein the step of estimating the another base station coordinate of the another base station according to the at least three base station coordinates of the at least three base stations comprises:
calculating at least three distances between the another base station and the at least three base stations according to at least three radio wave signals provided by the at least three base stations and received by the another base station; and
calculating the another base station coordinate of the another base station according to the at least three base station coordinates of the at least three base stations and the at least three distances,
wherein the step of calculating the at least three distances between the another base station and the at least three base stations according to the at least three radio wave signals provided by the at least three base stations and received by the another base station comprises:
estimating a distance DTOA between the another base station and the at least three base stations based on a time of arrival positioning method;
estimating a distance DRSSI between the another base station and the at least three base stations based on a received signal strength indication positioning method; and
obtaining a distance D between the another base station and the at least three base stations by D=A*DTOA+B*DRSSI/A+B, wherein symbols A and B are constants.