US 11,729,799 B2
Electronic device and method, performed by electronic device, of obtaining location information
Kangjin Yoon, Gyeonggi-do (KR); Mingyu Lee, Gyeonggi-do (KR); and Taeyoung Ha, Gyeonggi-do (KR)
Assigned to Samsung Electronics Co., Ltd
Filed by Samsung Electronics Co., Ltd., Gyeonggi-do (KR)
Filed on Jun. 21, 2021, as Appl. No. 17/353,220.
Claims priority of application No. 10-2020-0105683 (KR), filed on Aug. 21, 2020; application No. 10-2020-0118498 (KR), filed on Sep. 15, 2020; and application No. 10-2020-0156923 (KR), filed on Nov. 20, 2020.
Prior Publication US 2022/0061043 A1, Feb. 24, 2022
Int. Cl. H04W 72/04 (2023.01); H04W 4/029 (2018.01); H04W 4/02 (2018.01); H04W 72/12 (2023.01); G01S 5/10 (2006.01); G01S 5/02 (2010.01); H04W 72/51 (2023.01); H04W 72/0446 (2023.01); H04W 72/1263 (2023.01)
CPC H04W 72/51 (2023.01) [G01S 5/0284 (2013.01); G01S 5/10 (2013.01); H04W 4/023 (2013.01); H04W 4/029 (2018.02); H04W 72/0446 (2013.01); H04W 72/1263 (2013.01)] 16 Claims
OG exemplary drawing
 
1. A method, performed by an electronic device, of obtaining location information, the method comprising:
receiving an initiation message transmitted from a first anchor device;
receiving a response message transmitted from a second anchor device, the response message including information about a first reply time of the second anchor device and information about a transmission time of the response message, the information about the first reply time comprising a time interval between a reception time of the initiation message by the second anchor device and the transmission time of the response message by the second anchor device;
receiving, from the first anchor device, a final message including information about a second reply time of the first anchor device and information about a transmission time of the final message, the information about the second reply time comprising a time interval between a reception time of the response message by the first anchor device and a transmission time point of the final message by the first anchor device;
measuring a reception time of the initiation message, a reception time of the response message and a reception time of the final message by the electronic device; and
obtaining information about a time difference of arrival (TDoA) related to the first device and the second device based on the measured reception time of the initiation message, the measured reception time of the response message and the measured reception time of the final message.