US 11,751,161 B2
Terminal device locating method, terminal device, system and server
Fangsheng Jiang, Beijing (CN); and Hailu Jia, Beijing (CN)
Assigned to Beijing Baidu Netcom Science Technology Co., Ltd., Beijing (CN)
Filed by BEIJING BAIDU NETCOM SCIENCE TECHNOLOGY CO., LTD., Beijing (CN)
Filed on Jun. 22, 2021, as Appl. No. 17/354,209.
Claims priority of application No. 202011138256.0 (CN), filed on Oct. 22, 2020.
Prior Publication US 2021/0377898 A1, Dec. 2, 2021
Int. Cl. H04W 64/00 (2009.01); H04W 4/90 (2018.01); H04L 9/30 (2006.01); H04L 9/40 (2022.01); H04W 4/14 (2009.01)
CPC H04W 64/00 (2013.01) [H04L 9/30 (2013.01); H04L 63/0428 (2013.01); H04W 4/14 (2013.01); H04W 4/90 (2018.02)] 18 Claims
OG exemplary drawing
 
1. A terminal device locating method, which is applied to a terminal device, and comprises:
acquiring dialing information of a call of the terminal device; and
if the call is determined to be an emergency call according to the dialing information, sending information related to a location of the terminal device through a non-network channel to an emergency locating server, so that the information related to the location of the terminal device is sent to a cloud server; wherein the information related to the location of the terminal device comprises at least one of an identification of a base station accessed by the terminal device and a Media Access Control (MAC) address of a wireless access network device accessed by the terminal device; wherein the information related to the location of the terminal device is used to determine at least one of location information of the base station and location information of the wireless access network device and to obtain location information of the terminal device based on the at least one of the location information of the base station and the location information of the wireless access network device by the cloud sever;
wherein in a condition that the information related to the location of the terminal device comprises the identification of the base station accessed by the terminal device, before the sending information related to a location of the terminal device through a non-network channel to an emergency locating server, the method further comprises:
acquiring an identification of a base station corresponding to time information closest to a current time from pre-stored list information of base stations accessed by the terminal device; and determining the identification of the base station acquired as the identification of the base station accessed by the terminal device;
wherein in a condition that the information related to the location of the terminal device comprises the MAC address of the wireless access network device accessed by the terminal device, before the sending information related to a location of the terminal device through a non-network channel to an emergency locating server, the method further comprises:
acquiring a MAC address of a wireless access network device with a strongest wireless signal from pre-stored list information of wireless access network devices that support an access of the terminal device; and determining the MAC address acquired as the MAC address of the wireless access network device accessed by the terminal device.