Positioning method, device, apparatus and readable storage medium

A positioning method, performed by a network equipment in a satellite network, comprising:

• sending time reference information to a terminal, wherein the time reference information is used to enable the terminal to perform time synchronization with the network equipment;
• sending ephemeris information of a satellite to the terminal, wherein the ephemeris information is used to enable the terminal to determine the position information of the satellite;
• sending a downlink positioning signal to the terminal, wherein the downlink positioning signal is used to enable the terminal to determine a transmission delay between the satellite and the terminal,
• wherein the sending time reference information to the terminal comprises:
• sending the time reference information to the terminal through a broadcast message or a dedicated signaling, wherein the time reference information is used to enable the terminal to calibrate a reference time of a local clock and/or a clock frequency of the local clock of the terminal relative to a reference time of a satellite network and/or a clock frequency of the satellite network, according to the time reference information.

A positioning device, applied to a terminal, including a memory, a transceiver, and a processor:

• the memory is used to store computer programs;
• the transceiver is used to send and receive data under the control of the processor;
• the processor is used to read the computer programs in the memory and perform the following operations:
• performing time synchronization with a satellite network;
• determining position information of a satellite;
• receiving a downlink positioning signal sent by a network equipment of the satellite network;
• determining a transmission delay between the satellite and the terminal according to a time synchronization result and the downlink positioning signal;
• determining position information of the terminal according to the transmission delay and the position information of the satellite,
• wherein the performing time synchronization with a satellite network comprises:
• receiving time reference information sent by the network equipment through a broadcast message or a dedicated signaling;
• calibrating a reference time of a local clock and/or a clock frequency of the local clock of the terminal relative to a reference time of a satellite network and/or a clock frequency of the satellite network, according to the time reference information.