Synchronization state processing method, and device and storage medium

A synchronization state processing method, comprising:

• determining, by a base station, a synchronization state with a terminal in a process of receiving an uplink Sounding Reference Signal (SRS) transmitted by the terminal, wherein the terminal is in an IDLE state or INACTIVE state;
• and
• re-establishing, by the base station, synchronization with the terminal in the INACTIVE state to continue receiving the SRS transmitted by the terminal, or determining that positioning fails and generating a second positioning failure indication, when it is determined that uplink out-of-synchronization with the terminal occurs;
• wherein said determining, by the base station, the synchronization state with the terminal in the process of receiving the uplink SRS transmitted by the terminal comprises:
• obtaining, by the base station, second channel state information of a transmission channel between the base station and the terminal based on the received SRS;
• and
• determining, by the base station, the synchronization state with the terminal based on the second channel state information;
• wherein said determining, by the base station, the synchronization state with the terminal based on the second channel state information comprises:
• when the base station receives no SRS within a preconfigured maximum receiving time window, determining, by the base station, that uplink out-of-synchronization with the terminal occurs;
• or
• when the base station obtains a second path loss value of the transmission channel and the second path loss value is greater than a set second path loss threshold, determining, by the base station, that uplink out-of-synchronization with the terminal occurs;
• or
• when the base station obtains a fourth Reference Signal Receiving Power (RSRP) of the SRS transmitted by the terminal on the transmission channel and the fourth RSRP does not reach a set second RSRP threshold, determining, by the base station, that uplink out-of-synchronization with the terminal occurs;
• or
• when the base station obtains a second Reference Signal Receiving Power (RSRP) variation of the RSRP of the SRS transmitted by the terminal on the transmission channel and the second RSRP variation is greater than a set second RSRP variation threshold, determining, by the base station, that uplink out-of-synchronization with the terminal occurs.

A terminal, comprising:

• a memory configured to store an executable computer program;
• and
• a processor configured to read the executable computer program in the memory to:
• obtain first channel state information of a transmission channel between the terminal and a base station when the terminal is in an IDLE state or INACTIVE state and in a process of transmitting an uplink Sounding Reference Signal (SRS) to the base station for uplink positioning;
• and
• determine a synchronization state with the base station based on the first channel state information;
• wherein when obtaining the first channel state information of the transmission channel between the terminal and the base station, and determining the synchronization state with the base station based on the first channel state information, the processor is configured to:
• when a first path loss value of the transmission channel is obtained, determine that uplink out-of-synchronization with the base station occurs when determining that the first path loss value is greater than a first path loss threshold;
• or
• when first RSRP of a downlink reference signal sent by the base station on the transmission channel is obtained, determine that uplink out-of-synchronization with the base station occurs when determining that the first RSRP does not reach a first RSRP threshold;
• or
• when a first RSRP variation of RSRP of the downlink reference signal sent by the base station on the transmission channel is obtained, determine that uplink out-of-synchronization with the base station occurs when determining that the first RSRP variation is greater than a first RSRP variation threshold.