Method for transmitting and receiving positioning reference signal and apparatus therefor
Disclosed is a method for a terminal for receiving a positioning reference signal (PRS) in a wireless communication system. Particularly, the method includes: receiving first information related to a PRS resource group including a plurality of PRS resources, and second information related to a repetition count for the PRS resource group; and receiving a PRS on the plurality of PRS resources based on the first information and second information, wherein the PRS resource group may be allocated repeatedly as many times as the repetition count within a certain period.
1. A method performed by a user equipment (UE), the method comprising:
receiving configuration information related to positioning reference signal (PRS) resource sets each including one or more PRS resources; and
performing PRS reception based on the configuration information,
wherein the configuration information includes one or more PRS resource identifiers (IDs) of the one or more PRS resources in each PRS resource set, and transmission periodicity and slot offset information related to each PRS resource set,
wherein, for a single instance of a first PRS resource set, each PRS resource in the first PRS resource set is repeated based on repetition information included in the configuration information,
wherein a time gap is configured between repetitions of a PRS resource with a same PRS ID within the single instance of the first PRS resource set, and
wherein each PRS resource in the first PRS resource set is associated with each PRS beam of a transmission reception point (TRP).
2. The method of claim 1 , further comprising:
measuring reference signal time difference (RSTD) based on the PRS reception.
3. The method of claim 1 , further comprising:
measuring angle of arrival (AoA) based on the PRS reception.
4. The method of claim 1 , wherein the configuration information includes information related to quasi-colocation (QCL) for the PRS reception with respect to other reference signal.
5. The method of claim 4 , wherein the other reference signal includes a synchronization/physical broadcast channel block (SS/PBCH), and wherein the QCL is QCL type D.
6. The method of claim 1 , wherein the configuration information is related to a long term evolution positioning protocol (LPP).
7. A non-transitory computer-readable medium storing instructions, when executed by a processor, that cause the processor to perform the method of claim 1 .
8. A method performed by a transmission reception point (TRP), the method comprising:
transmitting configuration information related to positioning reference signal (PRS) resource sets each including one or more PRS resources; and
performing PRS transmission based on the configuration information,
wherein the configuration information includes one or more PRS resource identifiers (IDs) of the one or more PRS resources in each PRS resource set, and transmission periodicity and slot offset information related to each PRS resource set,
wherein, for a single instance of a first PRS resource set, each PRS resource in the first PRS resource set is repeated based on repetition information included in the configuration information,
wherein a time gap is configured between repetitions of a PRS resource with a same PRS ID within the single instance of the first PRS resource set, and
wherein each PRS resource in the first PRS resource set is associated with each PRS beam of the TRP.
9. A device comprising:
a memory configured store instructions; and
a processor configured to perform operations by executing the instructions, the operations comprising:
receiving configuration information related to positioning reference signal (PRS) resource sets each including one or more PRS resources; and
performing PRS reception based on the configuration information,
wherein the configuration information includes one or more PRS resource identifiers (IDs) of the one or more PRS resources in each PRS resource set, and transmission periodicity and slot offset information related to each PRS resource set,
wherein, for a single instance of a first PRS resource set, each PRS resource in the first PRS resource set is repeated based on repetition information included in the configuration information,
wherein a time gap is configured between repetitions of a PRS resource with a same PRS ID within the single instance of the first PRS resource set, and
wherein each PRS resource in the first PRS resource set is associated with each PRS beam of a transmission reception point (TRP).
10. The device of claim 9 , further comprising:
a transceiver configured to transmit or receive a radio signal under control of the processor.
11. The device of claim 9 , wherein the device is a user equipment (UE) configured to operate in a wireless communication system.
12. A device comprising:
a memory configured store instructions; and
a processor configured to perform operations by executing the instructions, the operations comprising:
transmitting configuration information related to positioning reference signal (PRS) resource sets each including one or more PRS resources; and
performing PRS transmission based on the configuration information,
wherein the configuration information includes one or more PRS resource identifiers (IDs) of the one or more PRS resources in each PRS resource set, and transmission periodicity and slot offset information related to each PRS resource set,
wherein, for a single instance of a first PRS resource set, each PRS resource in the first PRS resource set is repeated based on repetition information included in the configuration information,
wherein a time gap is configured between repetitions of a PRS resource with a same PRS ID within the single instance of the first PRS resource set, and
wherein each PRS resource in the first PRS resource set is associated with each PRS beam of a transmission reception point (TRP).
13. The device of claim 12 , further comprising:
a transceiver configured to transmit or receive a radio signal under control of the processor.
14. The device of claim 12 , wherein the device is the TRP configured to operate in a wireless communication system.
15. The device of claim 12 , wherein the device is a base station (BS) including the TRP.
16. The device of claim 12 , wherein the device is a network node in a wireless communication system.