Method and apparatus for performing CSI report in NR V2X

A first device configured to perform sidelink communication, the first device comprising:

• at least one memory storing instructions;
• at least one transceiver;
• and
• at least one processor operatively connected to the at least one memory and the at least one transceiver, wherein the at least one processor executes the instructions to:
• establish a plurality of PC5 radio resource control (RRC) connections with a second device;
• control the at least one transceiver to receive, from the second device through the plurality of PC5 RRC connections, information regarding latency bounds for sidelink (SL) channel state information (CSI) reporting, wherein each of the latency bounds is maintained for each of the plurality of PC5 RRC connections;
• trigger SL CSI reporting related to a first PC5 RRC connection among the plurality of PC5 RRC connections;
• control the at least one transceiver to receive, from the second device, a CSI-reference signal (RS) related to the triggered SL CSI reporting;
• determine that transmission of the triggered SL CSI reporting with at least one SL grant cannot fulfil a latency bound for the triggered SL CSI reporting;
• and
• control the at least one transceiver to transmit, to a base station, a scheduling request (SR) for requesting a resource for the triggered SL CSI reporting, based on the transmission of the triggered SL CSI reporting with the at least one SL grant which cannot fulfil the latency bound for the triggered SL CSI reporting.

An apparatus configured to control a first user equipment (UE), the apparatus comprising:

• at least one processor;
• and
• at least one memory operatively connected to the at least one processor and storing instructions, wherein the at least one processor executes the instructions to:
• establish a plurality of PC5 radio resource control (RRC) connections with a second device;
• receive, from the second device through the plurality of PC5 RRC connections, information regarding latency bounds for sidelink (SL) channel state information (CSI) reporting, wherein each of the latency bounds is maintained for each of the plurality of PC5 RRC connections;
• trigger SL CSI reporting related to a first PC5 RRC connection among the plurality of PC5 RRC connections;
• receive, from the second UE, a CSI-reference signal (RS) related to the triggered SL CSI reporting;
• determine that transmission of the triggered SL CSI reporting with at least one SL grant cannot fulfil a latency bound for the triggered SL CSI reporting;
• and
• transmit, to a base station, a scheduling request (SR) for requesting a resource for the triggered SL CSI reporting, based on the transmission of the triggered SL CSI reporting with the at least one SL grant which cannot fulfil the latency bound for the triggered SL CSI reporting.