Method for receiving reference signal in wireless communication system and apparatus therefor
A method for receiving a reference signal for determining a position in a wireless communication system, according to one embodiment of the present invention, may comprise the steps of: receiving positioning reference signal (PRS)-related configuration information transmitted from a plurality of antenna ports; and measuring the PRS by using the PRS-related configuration information, wherein the PRS may be mapped by being multiplexed with resource elements (RE) of each of the plurality of antenna ports.
1. A method for receiving a reference signal for positioning in a wireless communication system, the method comprising:
receiving, by a terminal, configuration information about positioning reference signal (PRS), the PRS being transmitted from a plurality of antenna ports of a plurality of transmission devices;
measuring, by the terminal, the PRS by using the PRS related configuration information; and
reporting a measurement result of the PRS,
wherein the PRS is multiplexed and mapped to resource elements (REs) of each of the plurality of antenna ports using an orthogonal cover code for code division multiplexing (CDM) designated for a respective one of the plurality of antenna ports, and
wherein, when the plurality of transmission devices use the same physical cell ID, one or more different antenna ports of the plurality of antenna ports are used for each of the plurality of transmission devices for transmitting the PRS.
2. The method according to claim 1 , wherein the PRS related configuration information includes at least one of information about an antenna port used for the PRS transmission, information about a subframe in which each antenna port transmits the PRS within a positioning occasion for the PRS transmission, information about an orthogonal cover code applied to each antenna port, or PRS RE mapping information for each antenna port.
3. The method according to claim 1 , further comprising receiving information on the orthogonal cover code for a respective one of the plurality of antenna ports.
4. The method according to claim 1 , wherein the PRS is mapped to a specific RE within OFDM symbols, to which the PRS is not mapped in a non-MBSFN (multicast and broadcast single frame network) subframe, in an MBSFN subframe.
5. The method according to claim 1 , further comprising reporting a measurement result of the PRS, wherein the measurement result of the PRS includes a measurement result of the PRS for each of the plurality of transmission devices.
6. A terminal configured to receive a reference signal for positioning in a wireless communication system, the terminal comprising:
a radio frequency (RF) unit; and
a processor that controls the RF unit,
wherein the processor:
receives configuration information about positioning reference signal (PRS), the PRS being transmitted from a plurality of antenna ports of a plurality of transmission devices,
measures the PRS using the PRS related configuration information, and
reports a measurement result of the PRS, and
wherein the PRS is multiplexed and mapped to resource elements (REs) of each of the plurality of antenna ports using an orthogonal cover code for code division multiplexing (CDM) designated for a respective one of the plurality of antenna ports, and
wherein when the plurality of transmission devices use the same physical cell ID, one or more different antenna ports of the plurality of antenna ports are used for each of the plurality of transmission devices for transmitting the PRS.
7. The terminal according to claim 6 , wherein the receives information on the orthogonal cover code for a respective one of the plurality of antenna ports.
8. The terminal according to claim 6 , wherein the PRS is mapped to a specific RE within OFDM symbols, to which the PRS is not mapped in a non-MBSFN (multicast and broadcast single frame network) subframe, in an MBSFN subframe.
9. The terminal according to claim 6 , wherein the processor is configured to report a measurement result of the PRS, and the measurement result of the PRS includes a measurement result of the PRS for each of the plurality of transmission devices.
10. The terminal according to claim 6 , wherein the PRS related configuration information includes at least one of information about an antenna port used for the PRS transmission, information about a subframe in which each antenna port transmit the PRS within a positioning occasion for the PRS transmission, information about an orthogonal cover code applied to each antenna port, or PRS RE mapping information for each antenna port.