Method of multiplexing uplink control information and related device

1. A method for a base station (BS) for processing multiplexed uplink control information (UCI) received from a user equipment (UE), the method comprising:

grouping physical uplink control channel (PUCCH) resources for Channel State Information (CSI) and a Scheduling Request (SR) with a low priority and PUCCH resources for a slot-based hybrid automatic repeat request acknowledgement (HARQ-ACK) into a first group of PUCCH resources;

grouping PUCCH resources for CSI and an SR with a high priority and PUCCH resources for a sub-slot based HARQ-ACK into a second group of PUCCH resources;

determining a first set of PUCCH resources in a slot from the first group of PUCCH resources;

obtaining first multiplexed UCI of a first PUCCH resource by performing a first UCI multiplexing procedure for UCI corresponding to the first set of PUCCH resources in the slot;

determining a second set of PUCCH resources in a sub-slot of the slot from the second group of PUCCH resources; and

obtaining second multiplexed UCI of a second PUCCH resource by performing a second UCI multiplexing procedure for UCI corresponding to the second set of PUCCH resources in the sub-slot of the slot.

2. The method of claim 1 , further comprising:

receiving, from the UE, the second multiplexed UCI in response to the first PUCCH resource overlapping the second PUCCH resource.

3. The method of claim 1 , further comprising:

receiving, from the UE, the second multiplexed UCI in response to the first PUCCH resource not overlapping the second PUCCH resource.

4. The method of claim 1 , further comprising:

receiving, from the UE, the first multiplexed UCI in response to the first PUCCH resource not overlapping the second PUCCH resource.

5. The method of claim 1 , further comprising:

receiving, from the UE, the second multiplexed UCI on a PUSCH resource in response to the PUSCH resource overlapping the second PUCCH resource; and

receiving, from the UE, the first multiplexed UCI on the PUSCH resource in response to the PUSCH resource overlapping the first PUCCH resource and not overlapping the second PUCCH resource.

6. The method of claim 1 , wherein determining the second set of PUCCH resources comprises:

determining a particular PUCCH resource of the second group of PUCCH resources to be in the second set of PUCCH resources in response to a first symbol of the particular PUCCH resource being in the sub-slot of the slot.

7. A base station (BS) for processing multiplexed uplink control information (UCI) received from a user equipment (UE), the BS comprising:

at least one processor; and

at least one memory coupled to the at least one processor, the at least one memory storing computer-executable instructions that, when executed by the at least one processor, cause the BS to:

group physical uplink control channel (PUCCH) resources for Channel State Information (CSI) and a Scheduling Request (SR) with a low priority and PUCCH resources for a slot-based hybrid automatic repeat request acknowledgement (HARQ-ACK) into a first group of PUCCH resources;

group PUCCH resources for CSI and an SR with a high priority and PUCCH resources for a sub-slot based HARQ-ACK into a second group of PUCCH resources;

determine a first set of PUCCH resources in a slot from the first group of PUCCH resources;

obtain first multiplexed UCI of a first PUCCH resource by performing a first UCI multiplexing procedure for UCI corresponding to the first set of PUCCH resources in the slot;

determine a second set of PUCCH resources in a sub-slot of the slot from the second group of PUCCH resources; and

obtain second multiplexed UCI of a second PUCCH resource by performing a second UCI multiplexing procedure for UCI corresponding to the second set of PUCCH resources in the sub-slot of the slot.

8. The BS of claim 7 , wherein the computer-executable instructions, when executed by the at least one processor, further cause the UE to:

receive, from the UE, the second multiplexed UCI in response to the first PUCCH resource overlapping the second PUCCH resource.

9. The BS of claim 7 , wherein the computer-executable instructions, when executed by the at least one processor, further cause the UE to:

receive, from the UE, the second multiplexed UCI in response to the first PUCCH resource not overlapping the second PUCCH resource.

10. The BS of claim 7 , wherein the computer-executable instructions, when executed by the at least one processor, further cause the UE to:

receive, from the UE, the first multiplexed UCI in response to the first PUCCH resource not overlapping the second PUCCH resource.

11. The BS of claim 7 , wherein the computer-executable instructions, when executed by the at least one processor, further cause the UE to:

receive, from the UE, the second multiplexed UCI on a PUSCH resource in response to the PUSCH resource overlapping the second PUCCH resource; and

receive, from the UE, the first multiplexed UCI on the PUSCH resource in response to the PUSCH resource overlapping the first PUCCH resource and not overlapping the second PUCCH resource.

12. The BS of claim 7 , wherein determining the second set of PUCCH resources comprises:

determining a particular PUCCH resource of the second group of PUCCH resources to be in the second set of PUCCH resources in response to a first symbol of the particular PUCCH resource being in the sub-slot of the slot.