Method and apparatus for measuring link between terminals in wireless communication system
According to an embodiment of the present disclosure, an operating method of a first terminal for measuring sidelink channel quality in a wireless communication system includes: receiving system information from a base station; transmitting, to a second terminal, a sidelink channel state information-reference signal (CSI-RS) in a physical sidelink shared channel (PSSCH), based on the system information; and receiving a CSI report from the second terminal, based on the sidelink CSI-RS.
1. A method performed by a first terminal in a wireless communication system, the method comprising:
receiving, from a base station, a radio resource control (RRC) message comprising information for reporting sidelink channel state information (CSI);
receiving, from the base station, downlink control information used for scheduling of a sidelink comprising a sidelink control channel and a sidelink data channel;
transmitting, based on the RRC message and sidelink control information (SCI), a sidelink channel state information-reference signal (CSI-RS) to a second terminal; and
receiving, from the second terminal, a report of the sidelink CSI based on the sidelink CSI-RS and the SCI,
wherein the sidelink CSI-RS is transmitted in resource blocks used for the sidelink data channel.
2. The method of claim 1 , wherein the sidelink CSI comprises a channel quality indicator (CQI) and a rank indicator (RI).
3. The method of claim 1 , wherein the resource blocks used for the sidelink data channel is associated with the sidelink control channel.
4. The method of claim 1 , wherein the sidelink CSI-RS is transmitted within the sidelink data channel for a unicast communication.
5. A method performed by a second terminal in a wireless communication system, the method comprising:
receiving, from a first terminal, a sidelink channel state information-reference signal (CSI-RS) based on sidelink control information (SCI) and a radio resource control (RRC) message comprising information for reporting sidelink channel state information (CSI) transmitted to the first terminal from a base station; and
reporting, to the first terminal, the sidelink CSI based on the sidelink CSI-RS and the SCI,
wherein the sidelink CSI-RS is received in resource blocks used for a sidelink data channel.
6. The method of claim 5 , wherein the sidelink CSI comprises a channel quality indicator (CQI) and a rank indicator (RI).
7. The method of claim 5 , wherein the resource blocks used for the sidelink data channel is associated with a sidelink control channel.
8. The method of claim 5 , wherein the sidelink CSI-RS is transmitted within the sidelink data channel for a unicast communication.
9. A first terminal in a wireless communication system, the first terminal comprising:
a transceiver; and
at least one processor coupled to the transceiver and configured to control to:
receive, from a base station, a radio resource control (RRC) message comprising information for reporting sidelink channel state information (CSI),
receive, from the base station, downlink control information used for scheduling of a sidelink comprising a sidelink control channel and a sidelink data channel,
transmit, based on the RRC message and sidelink control information (SCI), a sidelink channel state information-reference signal (CSI-RS) to a second terminal, and
receive a report of the sidelink CSI based on the sidelink CSI-RS and the SCI,
wherein the sidelink CSI-RS is transmitted in resource blocks used for the sidelink data channel.
10. The first terminal of claim 9 , wherein the sidelink CSI comprises a channel quality indicator (CQI) and a rank indicator (RI).
11. The first terminal of claim 9 , wherein the resource blocks used for the sidelink data channel is associated with the sidelink control channel.
12. The first terminal of claim 9 , wherein the sidelink CSI-RS is transmitted within the sidelink data channel for a unicast communication.
13. A second terminal in a wireless communication system, the second terminal comprising:
a transceiver; and
at least one processor coupled to the transceiver and configured to control to:
receive, from a first terminal, a sidelink channel state information-reference signal (CSI-RS) based on sidelink control information (SCI), in case that a radio resource control (RRC) message comprising information for reporting sidelink channel state information (CSI) is transmitted to the first terminal from a base station, and
report, to the first terminal, the sidelink CSI based on the sidelink CSI-RS and the SCI,
wherein the sidelink CSI-RS is received in resource blocks used for a sidelink data channel.
14. The second terminal of claim 13 , wherein the sidelink CSI comprises a channel quality indicator (CQI) and a rank indicator (RI).
15. The second terminal of claim 13 , wherein the resource blocks used for the sidelink data channel is associated with a sidelink control channel.