Configuration and measurement enhancements for double-sided round trip time

A method of wireless communication at a user equipment (UE), comprising:

• receiving, from a base station (BS), information indicating a first timing error group (TEG) delay at the BS for a transmission of a first positioning reference signal (PRS), a second TEG delay at the BS for a reception of a sounding reference signal (SRS) from the UE, a third TEG delay at the BS for a transmission of a second PRS, a fourth TEG delay at the BS for a transmission of the first PRS and a reception of the SRS from the UE, or a fifth TEG delay at the BS for a reception of the SRS from the UE and a transmission of the second PRS, or any combination thereof;
• receiving, from the BS, the first PRS and the second PRS;
• transmitting, to the BS, the SRS;
• and
• determining a double round trip time (RTT) based on a first PRS timing associated with a reception of the first PRS, an SRS timing associated with a transmission of the SRS, a second PRS timing associated with a reception of the second PRS, and the received information.

An apparatus for wireless communication at a user equipment (UE), comprising:

• a memory;
• a transceiver;
• and
• a processor, communicatively connected to the memory and the transceiver, the processor configured to:
• receive, from a base station (BS), information indicating a first timing error group (TEG) delay at the BS for a reception of a first sounding reference signal (SRS), a second TEG delay at the BS for a transmission of a positioning reference signal (PRS) to the UE, a third TEG delay at the BS for a reception of a second SRS, a fourth TEG delay at the BS for a reception of the first SRS and a transmission of the PRS to the UE, or a fifth TEG delay at the BS for a transmission of the PRS to the UE and a reception of the second SRS, or any combination thereof,
• receive, from the BS, the PRS;
• transmit, to the BS, the first SRS and the second SRS;
• and
• determine a double round trip time (RTT) based on a first SRS timing associated with a transmission of the first SRS, a PRS timing associated with a reception of the PRS, a second SRS timing associated with a transmission of the second SRS, and the received information.

A method of wireless communication at a user equipment (UE), comprising:

• receiving, from a base station (BS), information indicating a first timing error group (TEG) delay at the BS for a reception of a first sounding reference signal (SRS), a second TEG delay at the BS for a transmission of a positioning reference signal (PRS) to the UE, a third TEG delay at the BS for a reception of a second SRS, a fourth TEG delay at the BS for a reception of the first SRS and a transmission of the PRS to the UE, or a fifth TEG delay at the BS for a transmission of the PRS to the UE and a reception of the second SRS, or any combination thereof;
• receiving, from the BS, the PRS;
• transmitting, to the BS, the first SRS and the second SRS;
• and
• determining a double round trip time (RTT) based on a first SRS timing associated with a transmission of the first SRS, a PRS timing associated with a reception of the PRS, a second SRS timing associated with a transmission of the second SRS, and the received information.