US Patent 11160053 Method and apparatus for transmitting and receiving sidelink data

Provided are methods and apparatuses for transmitting/receiving sidelink data. The method of a transmitter UE for transmitting sidelink data includes transmitting a radio resource allocation request message for requesting the allocation of a radio resource used for sidelink data transmission, receiving first radio resource information used for the sidelink data transmission and second radio resource information for sidelink data retransmission, transmitting sidelink data based on the first radio resource information, and when retransmission is triggered according to the reception of hybrid automatic repeat request (HARQ) feedback information on sidelink data, retransmitting the sidelink data based on the second radio resource information.