US 12,253,613 B2
Method and device for determining arrival time, terminal device, and storage medium
Shijun Chen, Shenzhen (CN); Dawei Chen, Shenzhen (CN); Yang Wang, Shenzhen (CN); Junqiang Li, Shenzhen (CN); and Qian Chen, Shenzhen (CN)
Assigned to ZTE CORPORATION, Shenzhen (CN)
Appl. No. 17/783,828
Filed by ZTE CORPORATION, Shenzhen (CN)
PCT Filed Dec. 23, 2020, PCT No. PCT/CN2020/138464
§ 371(c)(1), (2) Date Jun. 9, 2022,
PCT Pub. No. WO2021/196765, PCT Pub. Date Oct. 7, 2021.
Claims priority of application No. 202010251399.6 (CN), filed on Apr. 1, 2020.
Prior Publication US 2023/0003829 A1, Jan. 5, 2023
Int. Cl. G01S 5/02 (2010.01)
CPC G01S 5/02216 (2020.05) [G01S 5/0215 (2013.01)] 13 Claims
OG exemplary drawing
 
1. A method for determining a time of arrival (TOA), applied to a positioning terminal device in a wireless communication system, comprising:
receiving a positioning signal from a base station in the wireless communication system;
performing a mathematical correlation operation on the positioning signal and a local signal to obtain a correlation waveform;
determining a detection start time on the correlation waveform based on a leading edge detection threshold;
determining a noise threshold on the correlation waveform, and determining a quasi-TOA according to the detection start time; and
determining the TOA according to data information in a target area of the correlation waveform and the noise threshold,
wherein the target area is determined based on the quasi-TOA and a detection length;
wherein determining the TOA according to data information in a target area of the correlation waveform and the noise threshold comprises:
determining the data information in the target area of the correlation waveform, the data information comprising: at least one of the following attributes of a maximum data point: amplitude; amplitude change rate; or time, the maximum data point being a data point with a largest amplitude in the target area of the correlation waveform;
determining the quasi-TOA as the TOA in response to the amplitude of the maximum data point being not greater than the noise threshold; and
updating the quasi-TOA in response to the amplitude of the maximum data point being greater than the noise threshold, until no amplitude greater than the noise threshold exists in a target area corresponding to the updated quasi-TOA, and determining the updated quasi-TOA as the TOA.