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) in a wireless communication system, the method comprising:
receiving configuration information comprising: (i) information regarding an identifier (ID) of a positioning reference signal (PRS) resource set, (ii) information regarding each ID of a plurality of PRS resources, (iii) information regarding a repetition number related to the plurality of PRS resources, and (iv) information regarding a PRS timing difference; and
receiving a PRS based on the configuration information,
wherein the plurality of PRS resources are included in one PRS resource set,
wherein all of the plurality of PRS resources are repeated for a time duration of the one PRS resource set by the same repetition number identified according to the information regarding the repetition number, and
wherein the PRS timing difference denotes a difference between (i) a timing related to a first PRS received from a first transmission point and (ii) a timing related to a second PRS received from a second transmission point.
2. The method of claim 1 , further comprising receiving information related to quasi-colocation (QCL) between at least one of the plurality of PRS resources and a reference signal,
wherein the PRS is received further based on the information related to QCL and the reference signal.
3. The method of claim 2 , wherein the reference signal comprises at least one of another PRS or a synchronization/physical broadcast channel block (SS/PBCH), and
wherein the QCL is QCL type D.
4. The method of claim 2 , further comprising:
obtaining information related to an ID of a specific cell; and
receiving the reference signal based on the ID of the specific cell.
5. The method of claim 1 , wherein a maximum number of PRS resources configurable for the UE is determined based on a capability of the UE.
6. The method of claim 1 , further comprising obtaining information related to an angle of a transmission beam for the PRS.
7. The method of claim 1 , wherein a resource element (RE) offset per at least one symbol the PRS resource mapped is configured in a frequency domain.
8. The method of claim 7 , further comprising obtaining information related to the at least one symbol.
9. The method of claim 1 , wherein the plurality of PRS resources are respectively related to a plurality of transmission beams different from each other.
10. The method of claim 1 , wherein the first transmission point is a reference transmission point.
11. An apparatus configured to operate in a wireless communication system, the apparatus comprising:
a transceiver; and
at least one processor coupled with the transceiver,
wherein the at least one processor is configured to:
receive configuration information comprising: (i) information regarding an identifier (ID) of a positioning reference signal (PRS) resource set, (ii) information regarding each ID of a plurality of PRS resources, (iii) information regarding a repetition number related to the plurality of PRS resources, and (iv) information regarding a PRS timing difference; and
receive a PRS based on the configuration information,
wherein the plurality of PRS resources are included in one PRS resource set,
wherein all of the plurality of PRS resources are repeated for a time duration of the one PRS resource set by the same repetition number identified according to the information regarding the repetition number, and
wherein the PRS timing difference denotes a difference between (i) a timing related to a first PRS received from a first transmission point and (ii) a timing related to a second PRS received from a second transmission point.
12. The apparatus of claim 11 , wherein the at least one processor is further configured to receive information related to quasi-colocation (QCL) between at least one of the plurality of PRS resources and a reference signal,
wherein the PRS is received further based on the information related to QCL and the reference signal.
13. The apparatus of claim 12 , wherein the reference signal comprises at least one of another PRS or a synchronization/physical broadcast channel block (SS/PBCH), and
wherein the QCL is QCL type D.
14. The apparatus of claim 11 , wherein the apparatus is configured to communicate with at least one of: a mobile terminal, a network, or an autonomous driving vehicle other than a vehicle comprising the apparatus.
15. An apparatus configured to operate in a wireless communication system, the apparatus comprising:
at least one processor; and
at least one memory storing at least one instruction causing the at least one processor to perform a method,
wherein the method comprises:
receive configuration information comprising: (i) information regarding an identifier (ID) of a positioning reference signal (PRS) resource set, (ii) information regarding each ID of a plurality of PRS resources, (iii) information regarding a repetition number related to the plurality of PRS resources, and (iv) information regarding a PRS timing difference; and
receive a PRS based on the configuration information,
wherein the plurality of PRS resources are included in one PRS resource set,
wherein all of the plurality of PRS resources are repeated for a time duration of the one PRS resource set by the same repetition number identified according to the information regarding the repetition number, and
wherein the PRS timing difference denotes a difference between (i) a timing related to a first PRS received from a first transmission point and (ii) a timing related to a second PRS received from a second transmission point.
16. A method performed by a base station in a wireless communication system, the method comprising:
transmitting configuration information comprising: (i) information regarding an identifier (ID) of a positioning reference signal (PRS) resource set, (ii) information regarding each ID of a plurality of PRS resources, (iii) information regarding a repetition number related to the plurality of PRS resources, and (iv) information regarding a PRS timing difference; and
transmitting a PRS based on the configuration information,
wherein the plurality of PRS resources are included in one PRS resource set,
wherein all of the plurality of PRS resources are repeated for a time duration of the one PRS resource set by the same repetition number identified according to the information regarding the repetition number, and
wherein the PRS timing difference denotes a difference between (i) a timing related to a first PRS transmitted by a first transmission point and (ii) a timing related to a second PRS transmitted by a second transmission point.