Method and device for transmitting and receiving physical uplink control channel between user equipment and base station in wireless communication system
The present invention disclose a method for transmitting and receiving a physical uplink control channel between a user equipment and a base station and device for supporting the same.
1. A method of transmitting uplink control information (UCI) by a user equipment (UE) to a base station (BS) in a wireless communication system, the method comprising:
generating the UCI;
applying a time-domain orthogonal cover code (OCC) to the UCI,
wherein (i) based on intra-slot frequency-hopping being configured for a physical uplink control channel (PUCCH), one time slot includes a plurality of hopping units, and the OCC is configured with a length based on a number of PUCCH symbols in a hopping unit among the plurality of the hopping units, and (ii) based on intra-slot frequency-hopping not being configured for the PUCCH, the OCC is configured with a length based on a number of PUCCH symbols in a time slot; and
transmitting the OCC-applied UCI via the PUCCH, wherein the PUCCH is configured with at least 4 symbols.
2. The method of claim 1 , wherein the OCC comprises an orthogonal sequence, and wherein the length of the OCC is a number of symbols in the orthogonal sequence.
3. The method of claim 2 , wherein the PUCCH comprises a demodulation reference signal (DM-RS) that is time-division multiplexed with the UCI.
4. The method of claim 3 ,
wherein for the length of the PUCCH being 4 symbols:
based on the intra-slot frequency hopping being configured for the PUCCH, a first hopping unit and a second hopping unit in the PUCCH each includes one UCI transmission symbol and one DM-RS transmission symbol, and
based on the intra-slot frequency hopping not being configured for the PUCCH, the PUCCH includes two UCI transmission symbols and two DM-RS transmission symbols.
5. The method of claim 3 ,
wherein for the length of the PUCCH being 8 symbols:
based on the intra-slot frequency hopping being configured for the PUCCH, a first hopping unit and a second hopping in the PUCCH each includes two UCI transmission symbols and two DM-RS transmission symbols,
based on the intra-slot frequency hopping not being configured for the PUCCH, the PUCCH includes four UCI transmission symbols and four DM-RS transmission symbols.
6. The method of claim 3 ,
wherein for the length of the PUCCH being 12 symbols:
based on the intra-slot frequency hopping being configured for the PUCCH, a first hopping unit and a second hopping unit in the PUCCH each includes three UCI transmission symbols and three DM-RS transmission symbols,
based on the intra-slot frequency hopping not being configured for the PUCCH, the PUCCH includes six UCI transmission symbols and six DM-RS transmission symbols.
7. The method of claim 3 ,
wherein the DM-RS and the UCI are time-division-multiplexed on different symbol locations in the PUCCH based on (i) a number of symbols in the PUCCH and (ii) whether the intra-slot frequency-hopping is configured for the PUCCH.
8. The method of claim 7 , wherein transmitting the OCC-applied UCI via the PUCCH comprises:
transmitting the PUCCH based on the DM-RS and the UCI being time-division multiplexed on the different symbol locations in the PUCCH.
9. The method of claim 7 ,
wherein for the length of the PUCCH being equal to 4 symbols, the different symbol locations in the PUCCH to which the DM-RS and UCI are mapped are configured to vary according to whether the intra-slot frequency-hopping is configured for the PUCCH, and
wherein for the length of the PUCCH being greater than 4 symbols, the different symbol locations in the PUCCH to which the DM-RS and UCI are mapped are configured regardless of whether the intra-slot frequency-hopping is configured for the PUCCH.
10. The method of claim 1 , wherein the hopping unit comprises time-consecutive symbols that are transmitted on the same frequency resource.
11. The method of claim 1 , further comprising:
receiving, from a base station, configuration information regarding whether the intra-slot frequency-hopping is configured for the PUCCH.
12. A method of receiving uplink control information (UCI) by a base station (BS) from a user equipment (UE) in a wireless communication system, the method comprising:
receiving, from the UE, a physical uplink control channel (PUCCH) that is configured with at least 4 symbols; and
determining, from the PUCCH, one time slot includes a plurality of hopping units, and the UCI to which a time-domain orthogonal cover code (OCC) has been applied,
wherein (i) based on intra-slot frequency-hopping being configured for the PUCCH, the OCC is configured with a length based on a number of PUCCH symbols in a hopping unit among the plurality of the hopping units, and (ii) based on intra-slot frequency-hopping not being configured for the PUCCH, the OCC is configured with a length based on a number of PUCCH symbols in a time slot.
13. A user equipment (UE) configured to transmit uplink control information (UCI) to a base station (BS) in a wireless communication system, the UE comprising:
a transmitter;
a receiver;
at least one processor; and
at least one computer memory operably connectable to the at least one processor and storing instructions that, when executed, cause the at least one processor to perform operations comprising:
generating the UCI;
applying a time-domain orthogonal cover code (OCC) to the UCI, wherein (i) based on intra-slot frequency-hopping being configured for a physical uplink control channel (PUCCH), one time slot includes a plurality of hopping units, and the OCC is configured with a length based on a number of PUCCH symbols in a hopping unit among the plurality of the hopping units, and (ii) based on intra-slot frequency-hopping not being configured for the PUCCH, the OCC is configured with a length based on a number of PUCCH symbols in a time slot; and
transmitting the OCC-applied UCI via the PUCCH, wherein the PUCCH is configured with at least 4 symbols.
14. A base station (BS) configured to receive uplink control information (UCI) from a user equipment (UE) in a wireless communication system, the BS comprising:
a transmitter;
a receiver;
at least one processor; and
at least one computer memory operably connectable to the least one processor and storing instructions that, when executed, cause the at least one processor to perform operations comprising:
receiving, from the UE, a physical uplink control channel (PUCCH) that is configured with at least 4 symbols; and
determining, from the PUCCH, the UCI to which a time-domain orthogonal cover code (OCC) was applied,
wherein (i) based on intra-slot frequency-hopping being configured for the PUCCH, one time slot includes a plurality of hopping units, and the OCC is configured with a length based on a number of PUCCH symbols in a hopping unit among the plurality of the hopping units, and (ii) based on intra-slot frequency-hopping not being configured for the PUCCH, the OCC is configured with a length based on a number of PUCCH symbols in a time slot.