Positioning method, positioning server, terminal and base station

A positioning method, comprising:

• exchanging, with a positioning server, positioning capability information that a terminal supports performing of positioning measurement according to a plurality of radio access techniques (RATs), so that the positioning server determines a first RAT whose load is the lightest among the plurality of RATs;
• receiving a configuration of a positioning reference signal (PRS) notified by the positioning server, wherein the configuration of the PRS indicates that a base station transmits the PRS by using the first RAT;
• and
• obtaining a reference signal time difference (RSTD) through measurement according to the configuration of the PRS, and sending the RSTD to the positioning server.

A positioning server, comprising a transceiver and a processor, wherein

• the transceiver is configured to exchange, with a terminal, positioning capability information that the terminal supports performing of positioning measurement according to a plurality of radio access techniques (RATs);
• the processor is configured to determine a first RAT whose load is the lightest among the plurality of RATs;
• the transceiver is configured to send allocation information to a base station, wherein the allocation information is used to instruct the base station to transmit a positioning reference signal (PRS) to the terminal in the first RAT, and receive a configuration of the PRS fed back by the base station;
• the transceiver is configured to notify the terminal of the configuration of the PRS;
• the transceiver is configured to receive a reference signal time difference (RSTD) that is obtained by the terminal through measurement according to the configuration of the PRS;
• and
• the processor is configured to determine a location of the terminal according to the RSTD.

A terminal, comprising a transceiver and a processor, wherein

• the transceiver is configured to exchange, with a positioning server, positioning capability information that the terminal supports performing of positioning measurement according to a plurality of radio access techniques (RATs), so that the positioning server determines a first RAT whose load is the lightest among the plurality of RATs;
• the transceiver is configured to receive a configuration of a positioning reference signal (PRS) notified by the positioning server, wherein the configuration of the PRS indicates a base station transmits the PRS by using the first RAT;
• the processor is configured to obtain a reference signal time difference (RSTD) through measurement according to the configuration of the PRS;
• and
• the transceiver is configured to send the RSTD to the positioning server.