Method for transmitting data or control information having high reliability conditions, and device therefor
Disclosed are various methods for transmitting or receiving data or control information having high reliability conditions. A method for operating a terminal which transmits uplink control information (UCI) includes: a step of generating UCI; a step of comparing the priority of an uplink (UL) control channel for the transmission of the UCI with the priority of a UL data channel when some symbols of the UL control channel and the UL data channel overlap; and a step of selecting the UL channel having a higher priority among the UL control channel and the UL data channel, and transmitting the UCI to a base station through the selected UL channel.
1. A random access method performed by a first terminal, the random access method comprising:
transmitting a message A to a base station;
receiving a message B from the base station; and
in response to that a success random access response (RAR) corresponding to the message A is found in the message B, transmitting a hybrid automatic repeat request-acknowledgement (HARQ-ACK) to the base station by using a physical uplink control channel (PUCCH),
wherein the HARQ-ACK is transmitted when a physical downlink control channel (PDCCH) scheduling the message B is indicated by a radio network temporary identifier (RNTI) commonly applied to two or more terminals including the first terminal.
2. The random access method according to claim 1 , wherein a resource set of the PUCCH is indicated by the base station through system information or dedicated radio resource control (RRC) signaling.
3. The random access method according to claim 1 , wherein the message B is in a physical downlink shared channel (PDSCH) scheduled by the physical downlink control channel (PDCCH), and the HARQ-ACK is transmitted to the base station when the success RAR corresponding to the message A is included in the PDSCH.
4. The random access method according to claim 3 , further comprising:
receiving a downlink preemption indicator (DLPI) from the base station; and
in response to that a resource indicated by the DL PI fully or partially overlaps with a resource of the PDSCH, cancelling reception or decoding of at least part of the PDSCH.
5. The random access method according to claim 1 , wherein the message A includes a physical random access channel (PRACH) preamble and a physical uplink shared channel (PUSCH).
6. The random access method according to claim 5 , wherein the PUSCH is transmitted regardless of reception of an uplink preemption indicator (ULPI).
7. A random access method performed by a base station, the random access method comprising:
receiving a message A from a first terminal;
transmitting a message B to the first terminal; and
receiving a hybrid automatic repeat request-acknowledgement (HARQ-ACK) from the first terminal by using a physical uplink control channel (PUCCH),
wherein the HARQ-ACK is received when a success random access response (RAR) is decoded by the first terminal, and a physical downlink control channel (PDCCH) scheduling the message B is indicated by a radio network temporary identifier (RNTI) commonly applied to two or more terminals including the first terminal.
8. The random access method according to claim 7 , wherein a resource set of the PUCCH is indicated by the base station through system information or dedicated radio resource control (RRC) signaling.
9. The random access method according to claim 7 , wherein the message B is in a physical downlink shared channel (PDSCH) scheduled by the physical downlink control channel (PDCCH), and the HARQ-ACK is received from the first terminal when the success RAR corresponding to the message A is included in the PDSCH.
10. The random access method according to claim 9 , further comprising:
transmitting a downlink preemption indicator (DLPI) to the first terminal; and
in response to that a resource indicated by the DL PI fully or partially overlaps with a resource of the PDSCH, cancelling transmission of at least part of the PDSCH.
11. The random access method according to claim 7 , wherein the message A includes a physical random access channel (PRACH) preamble and a physical uplink shared channel (PUSCH).
12. The random access method according to claim 11 , wherein the PUSCH is received regardless of transmission of an uplink preemption indicator (ULPI).