Method for receiving reference signal in wireless communication system, and apparatus therefor
A method for receiving a reference signal for position determination in a wireless communication system according to one embodiment of the present invention may comprise the steps of: receiving configuration information regarding a positioning reference signal (PRS), the method thereof being performed by user equipment (UE) and that is transmitted from a plurality of antenna ports, wherein the PRS related configuration information includes information regarding a beam direction applied to the PRS; measuring each PRS group to which the same beam direction related information is applied; and reporting the measurement results of the respective PRS group to a serving base station.
1. A method for receiving a positioning reference signal (PRS) in a wireless communication system, the method performed by a terminal and comprising the steps of:
receiving PRS related configuration information transmitted from a plurality of antenna ports, the PRS related configuration information including beam direction related information applied to the PRS;
measuring PRS groups, each of the PRS groups including at least one PRS to which the same beam direction related information is applied; and
reporting the measurement result of each of the PRS groups to a serving base station.
2. The method according to claim 1 , wherein the beam direction related information indicates a beam direction applied to a PRS transmitted in at least one subframe included in a PRS positioning occasion indicated by the PRS related configuration information.
3. The method according to claim 1 , wherein the beam direction related information indicates a beam direction applied to each of one or more PRS positioning occasions indicated by the PRS related configuration information.
4. The method according to claim 1 , wherein the beam direction related information indicates a beam direction applied to each symbol to which a PRS sequence included in a PRS positioning occasion indicated by the PRS related configuration information is mapped.
5. The method according to claim 1 , further comprising reporting, to the serving base station, a measurement result that includes information on a resource in which a PRS having the best beam direction is received.
6. The method according to claim 1 , wherein the PRS is received in such a manner that a plurality of precoding matrixes are applied thereto for a first time duration, and is received in such a manner that one precoding matrix is applied thereto or no precoding matrix is applied thereto for a second time duration.
7. The method according to claim 6 , wherein when one precoding matrix is applied for the second time duration, the one precoding matrix is determined depending on information on a resource in which a PRS having the best beam direction is received.
8. The method according to claim 6 , wherein the second time duration is shifted to the first time duration when the measurement result of the PRS by the terminal is an expected value or less.
9. A terminal configured to receive a positioning reference signal (PRS) in a wireless communication system, the terminal comprising:
a transmitter and receiver; and
a processor,
wherein the processor controls the receiver to receive PRS related configuration information transmitted from a plurality of antenna ports, the PRS related configuration information including beam direction related information applied to the PRS, measures PRS groups, each of the PRS groups including at least one PRS to which the same beam direction related information is applied, and controls the transmitter to transmit the measurement result of each of the PRS groups to a serving base station.
10. The terminal according to claim 9 , wherein the beam direction related information indicates a beam direction applied to a PRS transmitted in at least one subframe included in a PRS positioning occasion indicated by the PRS related configuration information.
11. The terminal according to claim 9 , wherein the beam direction related information indicates a beam direction applied to each of one or more PRS positioning occasions indicated by the PRS related configuration information.
12. The terminal according to claim 9 , wherein the beam direction related information indicates a beam direction applied to each symbol to which a PRS sequence included in a PRS positioning occasion indicated by the PRS related configuration information is mapped.
13. The terminal according to claim 9 , wherein the processor is configured to report, to the serving base station, a measurement result that includes information on a resource in which a PRS having the best beam direction is received.
14. The terminal according to claim 9 , wherein the PRS is received in such a manner that a plurality of precoding matrixes are applied thereto for a first time duration, and is received in such a manner that one precoding matrix is applied thereto or no precoding matrix is applied thereto for a second time duration.
15. The terminal according to claim 14 , wherein when one precoding matrix is applied to the PRS for the second time duration, the one precoding matrix is determined depending on information on a resource in which a PRS having the best beam direction is received.
16. The terminal according to claim 14 , wherein the second time duration is shifted to the first time duration when the measurement result of the PRS by the terminal is an expected value or less.