Method for transmitting/receiving data signal between base station and terminal in wireless communication system and apparatus supporting same
Disclosed are a method for transmitting/receiving a data signal between a base station and a terminal, and an apparatus supporting the same. More particularly, the present invention provides a method for reliably transmitting/receiving a data signal between a terminal and a base station when the data signal transmission/reception between the terminal and the base station is performed according to an analog beamforming method, and apparatuses supporting the same.
1. A method of receiving a data signal, by a user equipment from a base station in a wireless communication system, the method comprising:
receiving via radio resource control (RRC) signaling from the base station, channel state information reference signal (CSI-RS) configurations including each of transmission beam configurations;
receiving from the base station, control information on a transmission beam for a physical downlink shared channel (PDSCH), through a physical downlink control channel (PDCCH),
wherein the control information includes an indication related to one of the CSI-RS configurations;
receiving, from the base station, the data signal through the PDSCH based on the control information, and
wherein, based on assumption of a transmission beam related to the one of the CSI-RS configurations indicated by the control information, the data signal is received through the PDSCH starting after a time gap having a certain length from a transmission terminating point of the PDCCH.
2. The method of claim 1 , wherein the user equipment receives the control information through a reception beam corresponding to a preconfigured transmission beam.
3. The method of claim 2 , wherein the preconfigured transmission beam is configured to a first transmission beam included in a specific transmission beam set.
4. The method of claim 1 , further comprising:
transmitting acknowledgment information for the data signal to the base station,
wherein the acknowledgment information is transmitted through a transmission beam of the user equipment corresponding to one of:
a reception beam of the user equipment corresponding to a transmission beam of the base station configured through remote radio control (RRC) signaling;
a reception beam of the user equipment corresponding to a transmission beam of the base station indicated by scheduling information about the data signal;
a reception beam used to receive the scheduling information about the data signal; or
a reception beam used to receive the data signal.
5. The method of claim 1 , wherein the user equipment receives the control information using a wideband reception beam corresponding to all transmission beams included in a specific transmission beam set.
6. The method of claim 1 , wherein the user equipment comprises a plurality of antenna elements.
7. A method of transmitting a data signal by a base station to a user equipment in a wireless communication system, the method comprising:
transmitting via radio resource control (RRC) signaling to the user equipment, channel state information reference signal (CSI-RS) configurations including each of transmission beam configurations;
transmitting to the user equipment, control information on a transmission beam for a physical downlink shared channel (PDSCH), through a physical downlink control channel (PDCCH),
wherein the control information includes an indication related to one of the CSI-RS configurations;
transmitting, to the user equipment, the data signal through the PDSCH based on the control information, and
wherein, based on assumption of a transmission beam related to the one of the CSI-RS configurations indicated by the control information, the data signal is transmitted through the PDSCH starting after a time gap having a certain length from a transmission terminating point of the PDCCH.
8. The method of claim 7 , wherein the base station comprises at least one transmission reception point (TRP).
9. A user equipment for receiving a data signal from a base station in a wireless communication system, the user equipment comprising:
a transmitter;
a receiver; and
a processor configured to operate in connection with the transmitter and the receiver,
wherein the processor is configured to:
receive via radio resource control (RRC) signaling from the base station channel state information reference signal (CSI-RS) configurations including each of transmission beam configurations;
receive from the base station, control information on a transmission beam for a physical downlink shared channel (PDSCH), through a physical downlink control channel (PDCCH);
wherein the control information includes an indication related to one of the CSI-RS configurations;
receive, from the base station, the data signal through the PDSCH based on the control information, and
wherein, based on assumption of a transmission beam related to the one of the CSI-RS configurations indicated by the control information, the data signal is received through the PDSCH starting after a time gap having a certain length from a transmission terminating point of the PDCCH.
10. The user equipment of claim 9 , wherein the processor is configured to receive the control information through a reception beam corresponding to a preconfigured transmission beam.
11. The user equipment of claim 10 , wherein the preconfigured transmission beam is configured to a first transmission beam included in a specific transmission beam set.
12. The user equipment of claim 9 , wherein the processor is further configured to:
transmit acknowledgment information for the data signal to the base station,
wherein the acknowledgment information is transmitted through a transmission beam of the user equipment corresponding to one of:
a reception beam of the user equipment corresponding to a transmission beam of the base station configured through remote radio control (RRC) signaling;
a reception beam of the user equipment corresponding to a transmission beam of the base station indicated by scheduling information about the data signal;
a reception beam used to receive the scheduling information about the data signal; or
a reception beam used to receive the data signal.
13. The user equipment of claim 9 , wherein the processor is configured to receive the control information using a wideband reception beam corresponding to all transmission beams included in a specific transmission beam set.
14. The user equipment of claim 9 , wherein the user equipment comprises a plurality of antenna elements.
15. A base station for transmitting a data signal to a user equipment in a wireless communication system, the base station comprising:
a transmitter;
a receiver; and
a processor configured to operate in connection with the transmitter and the receiver,
wherein the processor is configured to:
transmit via radio resource control (RRC) signaling to the user equipment, channel state information reference signal (CSI-RS) configurations including each of transmission beam configurations;
transmit to the user equipment, control information on a transmission beam for a physical downlink shared channel (PDSCH), through a physical downlink control channel (PDCCH),
wherein the control information includes an indication related to one of the CSI-RS configurations;
transmit, to the user equipment, the data signal through the PDSCH based on the control information, and
wherein, based on assumption of a transmission beam related to the one of the CSI-RS configurations indicated by the control information, the data signal is transmitted through the PDSCH starting after a time gap having a certain length from a transmission terminating point of the PDCCH.