Multiplexing physical uplink control channels in a slot for a new radio (NR) system
Technology for a UE is disclosed. The UE can identify that a resource for a PUCCH transmission with HARQ-ACK information and/or a resource for a PUCCH associated with a SR overlap in time with two resources for respective PUCCH transmissions with two CSI reports. The UE can select a resource for a PUCCH transmission with a CSI report having a higher priority from the two resources for respective PUCCH transmissions with the two CSI reports. The UE can multiplex the HARQ-ACK information and/or the SR in the selected resource for the PUCCH transmission with the CSI report having the higher priority. The UE can encode the multiplexed HARQ-ACK information and the SR and the CSI report for transmission on the selected resource for the PUCCH transmission to a NR base station. The UE can drop the CSI report and the PUCCH resource having a lower priority.
1. An apparatus of a user equipment (UE) operable to transmit uplink control information (UCI) on a physical uplink control channel (PUCCH) to a New Radio (NR) base station, the apparatus comprising:
one or more processors configured to:
identify, at the UE, that a resource comprising one or more of a semi-persistent scheduling (SPS) hybrid automatic repeat request—acknowledgement (HARQ-ACK) and a scheduling request (SR) overlaps with two or more non-overlapping physical uplink control channel (PUCCH) resources carrying channel state information (CSI);
select, at the UE, a PUCCH resource and a corresponding CSI report having a highest priority from the two or more non-overlapping PUCCH resources carrying CSI;
identify, at the UE, a PUCCH resource and a corresponding CSI report having a lower priority from the two or more non-overlapping PUCCH resources carrying CSI;
determine, at the UE, whether the UE has received a multi-CSI-PUCCH-ResourceList higher-layer parameter from the NR base station;
multiplex the one or more of the SPS HARQ-ACK and the SR and the CSI report on the selected PUCCH resource having the highest priority in a slot in response to a determination that the UE has not received a multi-CSI-PUCCH-ResourceList higher-layer parameter from the NR base station and the HARQ-ACK is in response to a PDSCH reception without a corresponding physical downlink control channel (PDCCH);
encode, at the UE, uplink control information (UCI) that includes the multiplexed one or more of the SPS HARQ-ACK and the SR and the CSI report with the highest priority for transmission on the selected PUCCH resource to the NR base station; and
drop, at the UE, the PUCCH resource and the corresponding CSI report having the lower priority from the two or more non-overlapping PUCCH resources carrying CSI in response to the determination that the UE has not received a multi-CSI-PUCCH-ResourceList higher-layer parameter from the NR base station and the HARQ-ACK is in response to a PDSCH reception without a corresponding PDCCH; and
a memory interface configured to retrieve from a memory the UCI.
2. The apparatus of claim 1 , further comprising a transceiver configured to transmit the UCI to the NR base station.
3. The apparatus of claim 1 , wherein the one or more processors are configured to multiplex multiple PUCCH resources in a slot to ensure alignment between the NR base station and the UE.
4. The apparatus of claim 1 , wherein the one or more processors are configured to multiplex the one or more of the SPS HARQ-ACK and the SR and the CSI report on the selected PUCCH resource having the highest priority in a slot.
5. The apparatus of claim 1 , wherein the selected PUCCH resource is an earliest PUCCH resource among the two or more non-overlapping PUCCH resources carrying CSI.
6. The apparatus of claim 1 , wherein the resource comprising one or more of the SPS HARQ-ACK and the SR comprises the SPS HARQ-ACK, and wherein the SPS HARQ-ACK is in response to a physical downlink shared channel (PDSCH) reception at the UE without a corresponding physical downlink control channel (PDCCH) reception at the UE.
7. The apparatus of claim 1 , wherein a first CSI report has a higher priority as compared to a second CSI report when a first priority value associated with the first CSI report is lower than a second priority value associated with the second CSI report.
8. At least one non-transitory machine readable storage medium having instructions embodied thereon for transmitting uplink control information (UCI) on a physical uplink control channel (PUCCH) from a user equipment (UE) to a New Radio (NR) base station, the instructions when executed by one or more processors at the UE perform the following:
identifying, at the UE, that a resource comprising one or more of a semi-persistent scheduling (SPS) hybrid automatic repeat request—acknowledgement (HARQ-ACK) and a scheduling request (SR) overlaps with two or more non-overlapping physical uplink control channel (PUCCH) resources carrying channel state information (CSI);
selecting, at the UE, a PUCCH resource and a corresponding CSI report having a highest priority from the two or more non-overlapping PUCCH resources carrying CSI;
determine, at the UE, whether the UE has received a multi-CSI-PUCCH-ResourceList higher-layer parameter from the NR base station;
multiplexing, at the UE, the one or more of the SPS HARQ-ACK and the SR and the CSI report on the selected PUCCH resource having the highest priority in response to a determination that the UE has not received a multi-CSI-PUCCH-ResourceList higher-layer parameter from the NR base station and the HARQ-ACK is in response to a PDSCH reception without a corresponding PDCCH;
encoding, at the UE, uplink control information (UCI) that includes the multiplexed SPS HARQ-ACK or SR and the CSI report with the highest priority for transmission on the selected PUCCH resource to the NR base station; and
dropping a PUCCH resource and a corresponding CSI report having a lower priority from the two or more non-overlapping PUCCH resources carrying CSI in response to the determination that the UE has not received a multi-CSI-PUCCH-ResourceList higher-layer parameter from the NR base station and the HARQ-ACK is in response to a PDSCH reception without a corresponding PDCCH.
9. The at least one non-transitory machine readable storage medium of claim 8 , wherein the resource comprising one or more of the SPS HARQ-ACK and the SR comprises the SPS HARQ-ACK, wherein the SPS HARQ-ACK is in response to a physical downlink shared channel (PDSCH) reception at the UE without a corresponding physical downlink control channel (PDCCH) reception at the UE.
10. The at least one non-transitory machine readable storage medium of claim 8 , further comprising instructions when executed perform the following: multiplexing the one or more of the SPS HARQ-ACK and the SR and the CSI report on the selected PUCCH resource having the highest priority in a slot.
11. The at least one non-transitory machine readable storage medium of claim 8 , further comprising instructions when executed perform the following: multiplexing multiple PUCCH resources in a slot to ensure alignment between the NR base station and the UE.
12. The at least one non-transitory machine readable storage medium of claim 8 , wherein a first CSI report has a higher priority as compared to a second CSI report when a first priority value associated with the first CSI report is lower than a second priority value associated with the second CSI report.