Method and apparatus for transmitting UCI in wireless communication system
The present disclosure relates to a pre-5 th -Generation (5G) or 5G communication system to be provided for supporting higher data rates Beyond 4 th -Generation (4G) communication system such as Long Term Evolution (LTE). The present disclosure discloses a method of a user equipment (US) for transmitting uplink control information (UCI) in a wireless communication system. The method performed by the user equipment includes: determining a hybrid automatic retransmission request (HARQ) timing or HARQ timings of a dynamically scheduled physical downlink shared channel (PDSCH) and/or a semi-persistent scheduling (SPS) PDSCH and/or a physical downlink control channel (PDCCH) that indicates SPS releasing according to information sent from a base station; and transmitting generated hybrid automatic retransmission request acknowledgement (HARQ-ACK) information according to the HARQ timing or the HARQ timings determined. By applying present disclosure, it is possible to simplify the HARQ-ACK timing determination mode and can perform HARQ-ACK information transmission in time.
1. A method for operating a user equipment (UE), the method comprising:
receiving, from a base station, a physical downlink control channel (PDCCH) carrying downlink control information (DCI) including k value and a physical downlink shared channel (PDSCH), wherein the reception of the PDCCH or the PDSCH ends in an n th slot; and
transmitting, to the base station, a physical uplink control channel (PUCCH) including hybrid automatic retransmission request acknowledgement (HARQ-ACK) information in (n+k) th slot,
wherein a time unit of k is a slot length of the PUCCH,
wherein, in case a slot length of the PDSCH is less than a slot length of the PUCCH, transmitting the PUCCH in the (n+k) th slot comprises transmitting the PUCCH after a k th slot from an n th slot of the PUCCH that overlaps with a slot in which the PDSCH is received.
2. The method of claim 1 , wherein, in case a slot length of the PDSCH is larger than a slot length of the PUCCH, transmitting the PUCCH in the (n+k) th slot comprises transmitting the PUCCH after (k) th slot from an n th slot of the PUCCH that ends at a same time as a slot in which the PDSCH is received.
3. The method of claim 1 , wherein, in case the PDSCH is semi persistent scheduled (SPS), the DCI indicates SPS releasing, and a slot length of the PDCCH is less than a slot length of the PUCCH, transmitting the PUCCH in the (n+k) th slot comprises transmitting the PUCCH after (k) th slot from an n th slot of the PUCCH that overlaps with a slot in which the PDCCH is received.
4. The method of claim 1 , wherein, if the PDSCH is semi persistent scheduled (SPS), the DCI indicates SPS releasing, and a slot length of the PDCCH is larger than a slot length of the PUCCH, transmitting the PUCCH in the (n+k) th slot comprises transmitting the PUCCH after (k) th slot from an (n) th slot of the PUCCH that ends at same time as a slot in which the PDCCH is received.
5. The method of claim 1 , wherein, in case the PDSCH is semi persistent scheduled (SPS) and the DCI indicates SPS activation, transmitting the PUCCH in the (n+k) th slot comprises transmitting the PUCCH after (k) th slot from an n th slot in which the reception of the PDSCH ends.
6. An apparatus of a user equipment (UE) in a wireless communication system, the apparatus comprising:
at least one transceiver; and
at least one processor operably coupled to the at least one transceiver and configured to:
receive, from a base station, a physical downlink control channel (PDCCH) carrying downlink control information (DCI) including k value and a physical downlink shared channel (PDSCH), wherein the reception of the PDCCH or the PDSCH ends in an n th slot; and
transmit, to the base station, a physical uplink control channel (PUCCH) including hybrid automatic retransmission request acknowledgement (HARQ-ACK) information in a (n+k) th slot,
wherein a time unit of k is a slot length of the PUCCH,
wherein, in case a slot length of the PDSCH is less than a slot length of the PUCCH, to transmit the PUCCH in the (n+k) th slot, the at least one processor is configured to transmit the PUCCH after a k th slot from an n th slot of the PUCCH that overlaps with a slot in which the PDSCH is received.
7. The apparatus of claim 6 , wherein, in case a slot length of the PDSCH is larger than a slot length of the PUCCH, to transmit the PUCCH in the (n+k) th slot, the at least one processor is configured to transmit the PUCCH after a k th slot from an n th slot of the PUCCH that ends at a same time as a slot in which the PDSCH is received.
8. The apparatus of claim 6 , wherein, in case the PDSCH is semi persistent scheduled (SPS), the DCI indicates SPS releasing, and a slot length of the PDCCH is less than a slot length of the PUCCH, to transmit the PUCCH in the (n+k) th slot, the at least one processor is configured to transmit the PUCCH after a k th slot from an n th slot of the PDCCH that overlaps with a slot in which the PDCCH is received.
9. The apparatus of claim 6 , wherein, in case the PDSCH is semi persistent scheduled (SPS), the DCI indicates SPS releasing, and a slot length of the PDCCH is larger than a slot length of the PUCCH, to transmit the PUCCH in the (n+k) th slot, the at least one processor is configured to transmit the PUCCH after a k th slot from an n th of the PUCCH ends at same time as a slot in which the PDCCH is received.
10. The apparatus of claim 6 , wherein, in case the PDSCH is semi persistent scheduled (SPS) and the DCI indicates SPS activation, to transmit the PUCCH in the (n+k) th slot, the at least one processor is configured to transmit the PUCCH after a k th slot from a n th slot in which the reception of the PDSCH ends.