Patent ID: 11874390
Assignee: ZHEJIANG DAHUA TECHNOLOGY CO., LTD.
Field: Measurement (Instruments)
Classification: CPC G  H | IPC G  H

Claim 8:
9. A method implemented on a system having a target base station for determining a target distance between a terminal and the target base station, comprising:
transmitting, by the target base station, a first ultrasound signal at a first time point;
receiving, by the target base station, a first radiofrequency (RF) signal after a first time period from the first time point, wherein the first RF signal is transmitted by the terminal after a first time interval from the terminal receiving the first ultrasound signal;
determining whether the first time period is less than a first threshold; and
in response to a determination that the first time period is less than the first threshold, determining the target distance between the terminal and the target base station based on the first time period and the first time interval.