Operation method of user equipment in relation to CSI-RS in wireless communication system and apparatus supporting the same
The present invention provides an operation method of an user equipment in relation to CSI-RS in a wireless communication system. Particularly, an operation method performed by a user equipment (UE) according to the present disclosure includes receiving a higher layer signaling including resource configuration information related to an aperiodic transmission of beamformed CSI-RS from a base station (BS); receiving a first DCI format including first control information indicating that there is an aperiodic transmission of the beamformed CSI-RS from the BS; measuring the beamformed CSI-RS based on the received resource configuration information; and reporting a measurement result of the beamformed CSI-RS to the BS.
1. A method for receiving, by a user equipment (UE), a data on a physical downlink shared channel (PDSCH) in a wireless communication system, the method comprising:
receiving, from a base station (BS), a higher layer signaling including resource configuration information related to an aperiodic transmission of a channel state information-reference signal (CSI-RS);
receiving, from the BS, a downlink control information (DCI) format including information related to a PDSCH resource mapping;
determining, by the UE, a resource mapping for the PDSCH based on the DCI format; and
receiving, from the BS, the data on the PDSCH.
2. The method of claim 1 , wherein the information related to the PDSCH resource mapping is a dynamic zero power (ZP) CSI-RS indication field.
3. The method of claim 2 , wherein the dynamic ZP CSI-RS indication field includes a resource region that is available to be used for PDSCH transmission in a situation when the aperiodic transmission of the CSI-RS does not occur.
4. The method of claim 1 , wherein the DCI format further includes a PDSCH resource element mapping and quasi-co-location indicator (PQI) field.
5. The method of claim 4 , wherein the PDSCH resource mapping is performed based on the PQI field or the information related to the PDSCH resource mapping.
6. The method of claim 1 , wherein the DCI format is a DCI format related to a transmission mode (TM) which is defined for supporting a transmission of the CSI-RS.
7. The method of claim 1 , wherein the information related to the PDSCH resource mapping is represented as 2 bits.
8. The method of claim 1 , wherein the information related to the PDSCH resource mapping represents a parameter set configured by the higher layer signaling in order to determine the PDSCH resource mapping.
9. A user equipment (UE) for receiving a data on a physical downlink shared channel (PDSCH) in a wireless communication system, the UE comprising:
a a receiver; and
a processor, functionally connected to the receiver, wherein the processor is configured to:
control the receiver to receive, from a base station (BS), a higher layer signaling including resource configuration information related to an aperiodic transmission of a channel state information-reference signal (CSI-RS);
control the receiver to receive, from the BS, a downlink control information (DCI) format including information related to a PDSCH resource mapping;
determine, by the UE, a resource mapping for the PDSCH based on the DCI format; and
control the receiver to receive, from the BS, the data on the PDSCH.
10. The UE of claim 9 , wherein the information related to the PDSCH resource mapping is a dynamic zero power (ZP) CSI-RS indication field.