Signaling of reception-to-transmission measurements for round-trip-time (RTT)-based positioning

A positioning entity, comprising:

• at least one network interface or at least one transceiver or a combination thereof;
• a memory;
• and
• at least one processor communicatively coupled to the memory and the at least one transceiver,
• wherein the at least one processor is configured to:
• obtain a plurality of transmission-reception point (TRP) round trip time (RTT) related measurements, the plurality of TRP RTT-related measurements being one-to-one associated with a plurality of TRPs, wherein each TRP RTT-related measurement is associated with one TRP of the plurality of TRPs,
• obtain a plurality of user equipment (UE) RTT-related measurements, wherein each of the plurality of UE RTT-related measurements is associated with one TRP of the plurality of TRPs;
• and
• determine a position of a UE based on the plurality of TRP RTT-related measurements and the plurality of UE RTT-related measurements,
• wherein for each TRP of the plurality of TRPs,
• the TRP RTT-related measurement associated with that TRP represents a duration between that TRP transmitting a downlink reference signal (DL RS) to the UE and that TRP receiving a corresponding uplink reference signal (UL RS) from the UE, and
• the UE RTT-related measurement associated with that TRP represents a duration between the UE receiving the DL RS from that TRP and the UE transmitting the corresponding UL RS to that TRP,
• wherein for each TRP k,
• the associated TRP RTT-related measurement is expressed as ΔgNBk=TgNB,Rxk−TgNB,Txk in which TgNB,Txk represents a transmission time of the DL RS from that TRP and TgNB,Rxk represents a reception time of the corresponding UL RS at that TRP, and
• the associated UE RTT-related measurement is expressed as ΔUEk=TUE,Rxk−TUE,Txk in which TUE,Rxk represents a reception time of the DL RS at the UE and TUE,Txk represents a transmission time of the corresponding UL RS from the UE,
• wherein the plurality of TRP RTT-related measurements comprise quantities one ΔgNB1, zero or more ΔgNB2, and zero or more such that a total number of TRP RTT-related measurements is two or greater, the ΔgNB1 corresponding to a primary TRP in data communication with the UE, each ΔgNB2 corresponding to each secondary TRP in data communication with the UE, and each ΔgNB3 corresponding to a neighboring TRP not in data communication with the UE, and
• wherein the plurality of UE RTT-related measurements comprise quantities one ΔUE1, zero or more ΔUE2, and zero or more ΔUE3 such that a total number of UE RTT-related measurements is two or greater, the ΔUE1 corresponding to the primary TRP, each ΔUE2 corresponding to each secondary TRP, and each ΔUE3 corresponding to each neighboring TRP.

A positioning entity, comprising:

• means for obtaining a plurality of transmission-reception point (TRP) round trip time (RTT) related measurements, the plurality of TRP RTT-related measurements being one-to-one associated with a plurality of TRPs, wherein each TRP RTT-related measurement is associated with one TRP of the plurality of TRPs;
• means for obtaining a plurality of user equipment (UE) RTT-related measurements, wherein each of the plurality of UE RTT-related measurements is associated with one TRP of the plurality of TRPs;
• and
• means for determining a position of a UE based on the plurality of TRP RTT-related measurements and the plurality of UE RTT-related measurements,
• wherein for each TRP of the plurality of TRPs,
• the TRP RTT-related measurement associated with that TRP represents a duration between that TRP transmitting a downlink reference signal (DL RS) to the UE and that TRP receiving a corresponding uplink reference signal (UL RS) from the UE, and
• the UE RTT-related measurement associated with that TRP represents a duration between the UE receiving the DL RS from that TRP and the UE transmitting the corresponding UL RS to that TRP,
• wherein for each TRP k,
• the associated TRP RTT-related measurement is expressed as ΔgNBk=TgNB,Rxk−TgNB,Txk in which TgNB,Txk represents a transmission time of the DL RS from that TRP and TgNB,Rxk represents a reception time of the corresponding UL RS at that TRP, and
• the associated UE RTT-related measurement is expressed as ΔUEk=TUE,Rxk−TUE,Txk which TUE,Rxk represents a reception time of the DL RS at the UE and TUE,Txk represents a transmission time of the corresponding UL RS from the UE,
• wherein the plurality of TRP RTT-related measurements comprise quantities one ΔgNB1, zero or more ΔgNB2, and zero or more ΔgNB3 such that a total number of TRP RTT-related measurements is two or greater, the ΔgNB1 corresponding to a primary TRP in data communication with the UE, each ΔgNB2 corresponding to each secondary TRP in data communication with the UE, and each ΔgNB3 corresponding to a neighboring TRP not in data communication with the UE, and
• wherein the plurality of UE RTT-related measurements comprise quantities one ΔUE1, zero or more ΔUE2, and zero or more ΔUE3 such that a total number of UE RTT-related measurements is two or greater, the ΔUE1 corresponding to the primary TRP, each ΔUE2 corresponding to each secondary TRP, and each ΔUE3 corresponding to each neighboring TRP.

A non-transitory computer-readable medium storing computer-executable instructions for a positioning entity, the computer-executable instructions comprising:

• one or more instructions causing the positioning entity to obtain a plurality of transmission-reception point (TRP) round trip time (RTT) related measurements, the plurality of TRP RTT-related measurements being one-to-one associated with a plurality of TRPs, wherein each TRP RTT-related measurement is associated with one TRP of the plurality of TRPs;
• one or more instructions causing the positioning entity to obtain a plurality of user equipment (UE) RTT-related measurements, wherein each of the plurality of UE RTT-related measurements is associated with one TRP of the plurality of TRPs;
• and
• one or more instructions causing the positioning entity to determine a position of a UE based on the plurality of TRP RTT-related measurements and the plurality of UE RTT-related measurements,
• wherein for each TRP of the plurality of TRPs,
• the TRP RTT-related measurement associated with that TRP represents a duration between that TRP transmitting a downlink reference signal (DL RS) to the UE and that TRP receiving a corresponding uplink reference signal (UL RS) from the UE, and
• the UE RTT-related measurement associated with that TRP represents a duration between the UE receiving the DL RS from that TRP and the UE transmitting the corresponding UL RS to that TRP,
• wherein for each TRP k,
• the associated TRP RTT-related measurement is expressed as ΔgNBk=TgNB,Rxk−TgNB,Txk in which TgNB,Txk represents a transmission time of the DL RS from that TRP and TgNB,Rxk represents a reception time of the corresponding UL RS at that TRP, and
• the associated UE RTT-related measurement is expressed as ΔUEk=TUE,Rxk−TUE,Txk in which TUE,Rxk represents a reception time of the DL RS at the UE and TUE,Txk represents a transmission time of the corresponding UL RS from the UE,
• wherein the plurality of TRP RTT-related measurements comprise quantities one ΔgNB1, zero or more ΔgNB2, and zero or more ΔgNB3 such that a total number of TRP RTT-related measurements is two or greater, the ΔgNB1 corresponding to a primary TRP in data communication with the UE, each ΔgNB2 corresponding to each secondary TRP in data communication with the UE, and each ΔgNB3 corresponding to a neighboring TRP not in data communication with the UE, and
• wherein the plurality of UE RTT-related measurements comprise quantities one ΔUE1, zero or more ΔUE2, and zero or more ΔUE3 such that a total number of UE RTT-related measurements is two or greater, the ΔUE1 corresponding to the primary TRP, each ΔUE2 corresponding to each secondary TRP, and each ΔUE3 corresponding to each neighboring TRP.