Method and device for transmitting PRACH in NR V2X
An operating method for a first device ( 100 ) in a wireless communication system is presented. The method may comprise the steps of: transmitting an RA preamble to a base station ( 300 ); receiving, from the base station ( 300 ), a random access response (RAR) message related to the RA preamble; transmitting, to the base station ( 300 ), a physical uplink shared channel (PUSCH) as a response to the RAR message; receiving, from the base station ( 300 ), downlink control information (DCI) generated on the basis of a radio network temporary identifier (RNTI) related to the RA procedure, as a response to the PUSCH; determining overlapping between sidelink (SL) communication and physical uplink control channel (PUCCH) transmission related to the DCI; and transmitting a PUCCH to the base station ( 300 ) on the basis of the overlapping.
1 . A method comprising:
transmitting, to a base station, a random access preamble;
receiving, from the base station, a random access response (RAR) message in response to the transmission of the random access preamble;
transmitting, to the base station, a physical uplink shared channel (PUSCH) based on the RAR message;
receiving, from the base station, downlink control information (DCI) with cyclic redundancy check (CRC) scrambled by a temporary cell (TC) radio network temporary identifier (RNTI) related to a random access procedure, in response to the transmission of the PUSCH; and
transmitting, to the base station, a physical uplink control channel (PUCCH) including information for hybrid automatic repeat request (HARQ) feedback related to the random access procedure, based on an overlap between the transmission of the PUCCH and sidelink (SL) communication,
wherein the PUCCH has a higher priority than the SL communication, based on the PUCCH being related to the TC-RNTI.
2 . The method of claim 1 , wherein the SL communication is dropped based on the overlap.
3 . The method of claim 1 , wherein the PUCCH is transmitted regardless of the priority of the SL communication.
4 . The method of claim 1 , wherein a priority index related to the PUCCH transmission is 0 or 1.
5 . A first device comprising:
one or more processors;
one or more transceivers; and
one or more memories connected to the one or more processors and storing instructions,
wherein the instructions, based on being executed by the one or more processors, cause the first device to:
transmit, to a base station, a random access preamble;
receive, from the base station, a random access response (RAR) message in response to the transmission of the random access preamble;
transmit, to the base station, a physical uplink shared channel (PUSCH) based on the RAR message;
receive, from the base station, downlink control information (DCI) with cyclic redundancy check (CRC) scrambled by a temporary cell (TC) radio network temporary identifier (RNTI) related to a random access procedure, in response to the transmission of the PUSCH; and
transmit, to the base station, a physical uplink control channel (PUCCH) including information for hybrid automatic repeat request (HARQ) feedback related to the random access procedure, based on an overlap between the transmission of the PUCCH and sidelink (SL) communication,
wherein the PUCCH has a higher priority than the SL communication, based on the PUCCH being related to the TC-RNTI.
6 . A processing device adapted to control a first device, the processing device comprising:
one or more processors; and
one or more memories connected to the one or more processors and storing instructions,
wherein the instructions, based on being executed by the one or more processors, cause the first device to:
transmit, to a base station, a random access preamble;
receive, from the base station, a random access response (RAR) message in response to the transmission of the random access preamble;
transmit, to the base station, a physical uplink shared channel (PUSCH) based on the RAR message;
receive, from the base station, downlink control information (DCI) with cyclic redundancy check (CRC) scrambled by a temporary cell (TC) radio network temporary identifier (RNTI) related to a random access procedure, in response to the transmission of the PUSCH; and
transmit, to the base station, a physical uplink control channel (PUCCH) including information for hybrid automatic repeat request (HARQ) feedback related to the random access procedure, based on an overlap between the transmission of the PUCCH and sidelink (SL) communication,
wherein the PUCCH has a higher priority than the SL communication, based on the PUCCH being related to the TC-RNTI.