Method and device for controlling sidelink transmission power 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:
• determine a first power for physical sidelink shared channel (PSSCH) transmission in a second symbol period;
• after the determination of the first power, determine a second power for physical sidelink control channel (PSCCH) transmission in a first symbol period as:
• second power=10 log10()+first power
• wherein the M is a number of resource blocks (RBs) for the PSCCH transmission in the first symbol period, and the N is a number of RBs in the first symbol period;
• perform, to a second device, the PSCCH transmission in the first symbol period based on the second power;
• and
• perform, to the second device, the PSSCH transmission in the second symbol period based on the first power,
• wherein the second symbol period includes resources for the PSSCH transmission, and
• wherein the first symbol period includes resources for the PSCCH transmission and the PSSCH transmission.

An apparatus configured to control a first user equipment (UE), 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:
• determine a first power for physical sidelink shared channel (PSSCH) transmission in a second symbol period;
• after the determination of the first power, determine a second power for physical sidelink control channel (PSCCH) transmission in a first symbol period as:
• second power=10 log10()+first power
• wherein the M is a number of resource blocks (RBs) for the PSCCH transmission in the first symbol period, and the N is a number of RBs in the first symbol period;
• perform, to a second UE, the PSCCH transmission in the first symbol period based on the second power;
• and
• perform, to the second UE, the PSSCH transmission in the second symbol period based on the first power,
• wherein the second symbol period includes resources for the PSSCH transmission, and
• wherein the first symbol period includes resources for the PSCCH transmission and the PSSCH transmission.