Patent ID: 11917555
Assignee: LG ELECTRONICS INC.
Field: Digital communication (Electrical engineering)
Classification: CPC H | IPC H

Claim 0:
1. A method for transmitting a physical sidelink shared channel (PSSCH) in a wireless communication system, the method performed by a user equipment (UE) and comprising:
establishing a radio resource control (RRC) connection with a base station,
wherein, after establishing the RRC connection, the UE is in an RRC connected state;
receiving, from the base station, information for a resource pool of a sidelink;
performing a measurement of a channel busy ratio (CBR) on the resource pool,
wherein the CBR is defined as a proportion of sub-channels in the resource pool whose sidelink received signal strength indicator (S-RSSI) measured by the UE exceed a threshold sensed over a CBR measurement window; and
allocating a first transmit power to a first carrier and a second transmit power to a second carrier based on:
a length of a representative transmission time interval (TTI) of the first carrier;
a length of a representative TTI of a second carrier,
a priority of a first packet of signals to be transmitted via the first carrier,
a priority of a second packet of signals to be transmitted via the second carrier, and
a CBR of the first and second packets of signals transmitted on the first carrier and the second carrier, respectively,

wherein based on the length of the representative TTI of the first carrier being shorter than the representative TTI of the second carrier, the first transmit power is a greater value than the second transmit power,
wherein, for transmitting the PSSCH, the UE receives information for transmission power difference between a PSSCH region #A and a PSSCH region #B,
wherein the information for the transmission power difference is information about demodulation reference signal (DM-RS) symbol in the PSSCH region #A and data symbol in the PSSCH region #B, and
wherein the DM-RS symbol is transmitted on the PSSCH region #A and not transmitted on the PSSCH region #B.