Method and user equipment for performing uplink transmission
A disclosure of the present specification provides a new PUCCH format for allowing increased UCI (HARQ-ACK; including CSI) to be transmitted in an environment in which an enhanced carrier aggregation technology is used so that cells, the number of which exceeds five and is a maximum of X (e.g., 32), can be aggregated.
1. A method for performing uplink transmission, the method performed by a user equipment UE and comprising:
receiving a value used to generate a demodulation reference signal (DMRS) for a physical uplink shared channel (PUSCH),
wherein the DMRS for the PUSCH is generated based on a first parameter related to the received value, a second parameter related to a pseudo-random sequence and an integer selected among a plurality of integers, which include 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10 and 11;
generating a DMRS for a physical uplink control channel (PUCCH) based on a third parameter, a fourth parameter and a fifth parameter,
wherein the third parameter is equal to the first parameter and the fourth parameter is equal to the second parameter, based on that a PUCCH format of the PUCCH is other than format 1, 1a, 1b, 2, 2a, 2b and 3,
wherein the fifth parameter is for the PUCCH format,
wherein the PUCCH format includes a first PUCCH format and a second PUCCH format, and
wherein the fifth parameter is selected among a subset of the plurality of integers, based on that one of the first PUCCH format and the second PUCCH format is used; and
transmitting the DMRS for the PUCCH.
2. The method of claim 1 , further comprising:
mapping the DMRS for the PUCCH onto 1 symbol per a slot.
3. The method of claim 1 , wherein the third parameter, the fourth parameter and the fifth parameter are used for a cyclic shift related to the DMRS for the PUCCH.
4. The method of claim 1 , wherein the generating of the DMRS for the PUCCH includes:
generating a sequence related to the DMRS for the PUCCH; and
cyclically shifting the generated sequence based on the third parameter, the fourth parameter and the fifth parameter.
5. The method of claim 1 , wherein the PUCCH includes a hybrid automatic repeat request HARQ acknowledgement/negative-acknowledgement ACK/NACK signal.
6. The method of claim 1 , wherein the value used to generate the DMRS for the PUSCH is received through a radio resource control (RRC) message.
7. The method of claim 1 , wherein the DMRS for the PUCCH is generated based on a summation of the third parameter, the fourth parameter and the fifth parameter.
8. The method of claim 1 , wherein the first parameter and the second parameter are used for a cyclic shift related to the DMRS for the PUSCH.
9. The method of claim 4 , wherein the cyclically shifting is performed based on a summation of the third parameter, the fourth parameter and the fifth parameter.
10. The method of claim 1 , wherein the first parameter is selected among 0, 2, 3, 4, 6, 8, 9 and 10 based on the received value.
11. A user equipment UE for performing uplink transmission, the UE comprising:
a transceiver; and
a processor operatively coupled to the transceiver, wherein the processor is configured to:
control the transceiver to receive a value used to generate a demodulation reference signal (DMRS) for a physical uplink shared channel (PUSCH),
wherein the DMRS for the PUSCH is generated based on a first parameter related to the received value, a second parameter related to a pseudo-random sequence and an integer selected among a plurality of integers, which include 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10 and 11;
generate a DMRS for a physical uplink control channel (PUCCH) based on a third parameter, a fourth parameter and a fifth parameter,
wherein the third parameter is equal to the first parameter and the fourth parameter is equal to the second parameter, based on that a PUCCH format of the PUCCH is other than format 1, 1a, 1b, 2, 2a, 2b and 3,
wherein the fifth parameter is for the PUCCH format,
wherein the PUCCH format includes a first PUCCH format and a second PUCCH format, and
wherein the fifth parameter is selected among a subset of the plurality of integers, based on that one of the first PUCCH format and the second PUCCH format is used; and
control the transceiver to transmit the DMRS for the PUCCH.
12. The UE of claim 11 , wherein the processor is further configured to:
map the DMRS for the PUCCH onto 1 symbol per a slot.
13. The UE of claim 11 , wherein the third parameter, the fourth parameter and the fifth parameter are used for a cyclic shift related to the DMRS for the PUCCH.
14. The UE of claim 11 , wherein the generating of the DMRS for the PUCCH includes:
generating a sequence related to the DMRS for the PUCCH; and
cyclically shifting the generated sequence based on the third parameter, the fourth parameter and the fifth parameter.
15. The UE of claim 11 , wherein the PUCCH includes a hybrid automatic repeat request HARQ acknowledgement/negative-acknowledgement ACK/NACK signal.
16. The UE of claim 11 , wherein the value used to generate the DMRS for the PUSCH is received through a radio resource control (RRC) message.
17. The UE of claim 11 , wherein the DMRS for the PUCCH is generated based on a summation of the third parameter, the fourth parameter and the fifth parameter.
18. The UE of claim 11 , wherein the first parameter and the second parameter are used for a cyclic shift related to the DMRS for the PUSCH.
19. The UE of claim 14 , wherein the cyclically shifting is performed based on a summation of the third parameter, the fourth parameter and the fifth parameter.
20. The UE of claim 11 , wherein the first parameter is selected among 0, 2, 3, 4, 6, 8, 9 and 10 based on the received value.