Method for data channel rate matching according to aperiodic CSI-RS in wireless communication system, and device therefor
Disclosed in the present application is a method by which a terminal receives a terminal-specific control channel from a base station in a wireless communication system. Particularly, the method comprises the steps of: receiving, through an upper layer, resource configuration information for at least one aperiodic channel status information-reference signal (CSI-RS); receiving a common control channel including rate matching information of the terminal-specific control channel; and receiving, from the base station, together with the at least one aperiodic CSI-RS, the terminal-specific control channel including a triggering message of a CSI report based on the at least one aperiodic CSI-RS, by using the rate matching information.
1. A method for receiving, by a user equipment (UE), a UE-specific control channel from a base station in a wireless communication system, the method comprising:
receiving resource configuration information for at least one aperiodic Channel Status Information-Reference Signal (CSI-RS) through a higher layer;
receiving resource configuration information for at least one periodic CSI-RS through the higher layer;
receiving a common control channel including rate matching information about the UE-specific control channel; and
receiving, from the base station, the UE-specific control channel including a triggering message of CSI reporting based on the at least one aperiodic CSI-RS along with the at least one aperiodic CSI-RS using the rate matching information, on an assumption that the UE-specific control channel is not mapped to an union of resources for the at least one aperiodic CSI-RS and resources for the at least one periodic CSI-RS.
2. The method according to claim 1 , wherein the receiving of the UE-specific control channel comprises:
receiving the UE-specific control channel on an assumption that the UE-specific control channel is not mapped to resources for the at least one aperiodic CSI-RS.
3. The method according to claim 1 , further comprising:
receiving a data channel scheduled by the UE-specific control channel,
wherein the UE-specific control channel comprises rate matching information about the data channel.
4. The method according to claim 1 , wherein the rate matching information about the UE-specific control channel comprises information indicating a subset of resources for the at least one aperiodic CSI-RS,
wherein the receiving of the UE-specific control channel comprises:
receiving the UE-specific control channel on an assumption that the UE-specific control channel is not mapped to the subset of resources for the at least one aperiodic CSI-RS.
5. A user equipment (UE) in a wireless communication system, comprising:
a wireless communication module; and
a processor connected to the wireless communication module,
wherein the processor is configured to:
receive resource configuration information for at least one aperiodic Channel Status Information-Reference Signal (C SI-RS) through a higher layer,
receive resource configuration information for at least one periodic CSI-RS through the higher layer,
receive a common control channel including rate matching information about a UE-specific control channel, and
receive, from a base station, the UE-specific control channel including a triggering message of CSI reporting based on the at least one aperiodic CSI-RS along with the at least one aperiodic CSI-RS using the rate matching information, on an assumption that the UE-specific control channel is not mapped to an union of resources for the at least one aperiodic CSI-RS and resources for the at least one periodic CSI-RS.
6. The UE according to claim 5 , wherein the processor is configured to:
receive the UE-specific control channel on an assumption that the UE-specific control channel is not mapped to resources for the at least one aperiodic CSI-RS.
7. The UE according to claim 5 , wherein the processor is configured to:
receive a data channel scheduled by the UE-specific control channel,
wherein the UE-specific control channel comprises rate matching information about the data channel.
8. The UE according to claim 5 , wherein the rate matching information about the UE-specific control channel comprises information indicating a subset of resources for the at least one aperiodic CSI-RS,
wherein the processor is configured to:
receive the UE-specific control channel on an assumption that the UE-specific control channel is not mapped to the subset of resources for the at least one aperiodic CSI-RS.