Method and device for performing SL communication on basis of assistance information in NR V2X

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

• one or more transceivers;
• one or more processors operably connected to the one or more transceivers;
• and
• one or more memories operably connected to the one or more processors and storing instructions that, when executed by the one or more processors, perform operations comprising:
• receiving, via the one or more transceivers from a second device through a physical sidelink control channel (PSCCH), first sidelink control information (SCI) including scheduling information for a physical sidelink shared channel (PSSCH), wherein the first SCI includes information related to a priority, information related to frequency resource assignment, information related to time resource assignment, information related to a demodulation reference signal (DMRS) pattern, and information related to modulation and coding scheme (MCS);
• receiving, via the one or more transceivers from the second device through the PSSCH, resource information including information related to a set of preferred resources or information related to a set of non-preferred resources;
• generating a first medium access control (MAC) protocol data unit (PDU);
• selecting a sidelink (SL) resource based on the resource information;
• and
• transmitting, via the one or more transceivers, the first MAC PDU based on the SL resource,
• wherein the information related to the set of preferred resources or the information related to the set of non-preferred resources is represented by one field representing a combination of a time resource indicator value (TRIV), a frequency resource indicator value (FRIV) and a resource reservation period.

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

• one or more processors;
• and
• one or more memories operably connected to the one or more processors and storing instructions that, when executed by the one or more processors, perform operations comprising:
• receiving, from a second device through a physical sidelink control channel (PSCCH), first sidelink control information (SCI) including scheduling information for a physical sidelink shared channel (PSSCH), wherein the first SCI includes information related to a priority, information related to frequency resource assignment, information related to time resource assignment, information related to a demodulation reference signal (DMRS) pattern, and information related to modulation and coding scheme (MCS);
• receiving, from the second device through the PSSCH, resource information including information related to a set of preferred resources or information related to a set of non-preferred resources;
• generating a first medium access control (MAC) protocol data unit (PDU);
• selecting a sidelink (SL) resource based on the resource information;
• and
• transmitting the first MAC PDU based on the SL resource,
• wherein the information related to the set of preferred resources or the information related to the set of non-preferred resources is represented by one field representing a combination of a time resource indicator value (TRIV), a frequency resource indicator value (FRIV) and a resource reservation period.