Channel Latency Determining Method, Positioning Method, and Related Device

A communications device, comprising:

• a processor;
• and
• a non-transitory computer-readable storage medium storing a program to be executed by the processor, the program including instructions for:
• obtain device location information of a calibration user equipment (UE);
• calculate a propagation delay according to the device location information and further according to prestored location information of an antenna, wherein the propagation delay is a time between transmitting a radio signal by the calibration UE and receiving the radio signal by the antenna;
• calculate a time of arrival (TOA) based on the radio signal transmitted by the calibration UE to the antenna, wherein the time of arrival is a time obtained through calculation according to a TOA estimation algorithm;
• and
• determine a channel latency according to the propagation delay and the time of arrival, wherein the channel latency is positively correlated with the time of arrival and is negatively correlated with the propagation delay.

A non-transitory computer readable medium comprising a computer program stored thereon, the program executable by one or more digital processors for determining channel latency, the computer program including instructions for:

• obtaining device location information of a calibration user equipment (UE);
• calculating a propagation delay according to the device location information and further according to prestored location information of an antenna, wherein the propagation delay is a time between transmitting a radio signal by the calibration UE and receiving the radio signal by the antenna;
• calculating a time of arrival according to the radio signal transmitted by the calibration UE to the antenna, wherein the time of arrival is a time obtained through calculation according to a time of arrival (TOA) estimation algorithm;
• and
• determining a channel latency according to the propagation delay and the time of arrival, wherein the channel latency is positively correlated with the time of arrival and is negatively correlated with the propagation delay.