System and methods for rapid round-trip-time measurement

A location server configured for determining a location for a user equipment (UE) using round-trip time (RTT) for signals between the UE and a plurality of gNBs in a wireless network, comprising:

• a network interface configured to communicate with other entities in the wireless network;
• at least one memory;
• and
• at least one processor coupled to the network interface and the at least one memory and configured to:
• receive, via the network interface, from the UE a first report for downlink (DL) positioning reference signals (PRS) measurements performed by the UE for DL PRS transmitted by each gNB in the plurality of gNBs;
• receive, via the network interface, from each gNB a gNB report for UE sounding reference signals (SRS) measurements performed by each gNB for UE SRS transmitted by the UE;
• determine RTTs between the UE and each gNB using the DL PRS measurements performed by the UE and the UE SRS measurements performed by each gNB;
• and
• determine a position of the UE based on at least the RTTs between the UE and each gNB.

A location server configured for determining a location for a user equipment (UE) using round-trip time (RTT) for signals between the UE and a plurality of gNBs in a wireless network, comprising:

• means for receiving from the UE a first report for downlink (DL) positioning reference signals (PRS) measurements performed by the UE for DL PRS transmitted by each gNB in the plurality of gNBs;
• means for receiving from each gNB a gNB report for UE sounding reference signals (SRS) measurements performed by each gNB for UE SRS transmitted by the UE;
• means for determining RTTs between the UE and each gNB using the DL PRS measurements performed by the UE and the UE SRS measurements performed by each gNB;
• and
• means for determining a position of the UE based on at least the RTTs between the UE and each gNB.

A non-transitory computer readable storage medium including program code stored thereon, the program code is operable to configure at least one processor in a location server for determining a location for a user equipment (UE) using round-trip time (RTT) for signals between the UE and a plurality of gNBs in a wireless network, the program code comprising instructions to:

• receive from the UE a first report for downlink (DL) positioning reference signals (PRS) measurements performed by the UE for DL PRS transmitted by each gNB in the plurality of gNBs;
• receive from each gNB a gNB report for UE sounding reference signals (SRS) measurements performed by each gNB for UE SRS transmitted by the UE;
• determine RTTs between the UE and each gNB using the DL PRS measurements performed by the UE and the UE SRS measurements performed by each gNB;
• and
• determine a position of the UE based on at least the RTTs between the UE and each gNB.