Method and device for transmitting/receiving inter-UE coordination message in NR V2X

A first device adapted to perform wireless communication, the first device comprising:

• one or more memories storing instructions;
• one or more transceivers;
• and
• one or more processors connected to the one or more memories and the one or more transceivers, wherein the one or more processors execute the instructions to:
• transmit, to a second device, first sidelink control information (SCI) for scheduling of a physical sidelink shared channel (PSSCH) and second SCI, wherein the first SCI includes information related to frequency resource assignment, information related to time resource assignment and information related to a format of the second SCI;
• and
• transmit, to the second device, the second SCI including a source ID and a destination ID, and inter-UE coordination information,
• wherein the inter-UE coordination information includes information related to a preferred resource or information related to a non-preferred resource, and
• wherein, in logical channel prioritization (LCP), a priority of a medium access control (MAC) control element (CE) for the inter-UE coordination information is lower than a priority of data from a sidelink control channel (SCCH) and a priority of a MAC CE for sidelink (SL) channel state information (CSI) reporting, and the priority of the MAC CE for the inter-UE coordination information is higher than a priority of data from a sidelink traffic channel (STCH).

A processing device adapted to control a first device, the processing device comprising:

• one or more processors;
• and
• one or more memories operably connected to the one or more processors and storing instructions, wherein the one or more processors execute the instructions to:
• transmit, to a second device, first sidelink control information (SCI) for scheduling of a physical sidelink shared channel (PSSCH) and second SCI, wherein the first SCI includes information related to frequency resource assignment, information related to time resource assignment and information related to a format of the second SCI;
• and
• transmit, to the second device, the second SCI including a source ID and a destination ID, and inter-UE coordination information,
• wherein the inter-UE coordination information includes information related to a preferred resource or information related to a non-preferred resource, and
• wherein, in logical channel prioritization (LCP), a priority of a medium access control (MAC) control element (CE) for the inter-UE coordination information is lower than a priority of data from a sidelink control channel (SCCH) and a priority of a MAC CE for sidelink (SL) channel state information (CSI) reporting, and the priority of the MAC CE for the inter-UE coordination information is higher than a priority of data from a sidelink traffic channel (STCH).