Method and apparatus for performing prioritization procedure in nr v2x

A first device configured 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:
• receive, from a base station, information related to a first physical uplink control channel (PUCCH) for a sidelink (SL) hybrid automatic repeat request (HARQ)-acknowledgment (ACK) report;
• transmit, to a second device through a physical sidelink control channel (PSCCH), a first sidelink control channel (SCI) for scheduling of a physical sidelink shared channel (PSSCH) and a second SCI;
• transmit, to the second device through the PSSCH, the second SCI and data;
• generate the SL HARQ-ACK report for the data;
• perform a procedure for prioritization between the first PUCCH and a second PUCCH, based on overlapping for the first PUCCH and the second PUCCH of a smaller priority index;
• perform a procedure for prioritization between the first PUCCH and a third PUCCH, based on overlapping for the first PUCCH and the third PUCCH of a larger priority index;
• select a first PUSCH in a procedure for resolving overlapping for at least one PUCCH without a SL HARQ-ACK report or at least one physical uplink shared channel (PUSCH);
• after resolving the overlapping for the at least one PUCCH without the SL HARQ-ACK report or the at least one PUSCH, determine overlapping for the first PUCCH and the first PUSCH;
• and
• transmit, to the base station through the first PUSCH, the SL HARQ-ACK report, based on the first PUSCH of the smaller priority index which includes no uplink control information (UCI).

An apparatus configured to control a first user equipment (UE) performing wireless communication, the apparatus 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:
• receive, from a base station, information related to a first physical uplink control channel (PUCCH) for a sidelink (SL) hybrid automatic repeat request (HARQ)-acknowledgment (ACK) report;
• transmit, to a second UE through a physical sidelink control channel (PSCCH), a first sidelink control channel (SCI) for scheduling of a physical sidelink shared channel (PSSCH) and a second SCI;
• transmit, to the second UE through the PSSCH, the second SCI and data;
• generate the SL HARQ-ACK report for the data;
• perform a procedure for prioritization between the first PUCCH and a second PUCCH, based on overlapping for the first PUCCH and the second PUCCH of a smaller priority index;
• perform a procedure for prioritization between the first PUCCH and a third PUCCH, based on overlapping for the first PUCCH and the third PUCCH of a larger priority index;
• select a first PUSCH in a procedure for resolving overlapping for at least one PUCCH without a SL HARQ-ACK report or at least one physical uplink shared channel (PUSCH);
• after resolving the overlapping for the at least one PUCCH without the SL HARQ-ACK report or the at least one PUSCH, determine overlapping for the first PUCCH and the first PUSCH;
• and
• transmit, to the base station through the first PUSCH, the SL HARQ-ACK report, based on the first PUSCH of the smaller priority index which includes no uplink control information (UCI).