USER EQUIPMENT AND METHOD FOR MULTIPLEXING UPLINK CONTROL INFORMATION
A UE and a method for handling multiplexing UCI are provided. The method receives an RRC configuration including a first PUCCH resource configuration and a second PUCCH resource configuration. The method obtains a first set of PUCCH resources in a first sub-slot and a second set of PUCCH resources in a second sub-slot, where the first sub-slot overlaps the second sub-slot. The method performs a first UCI multiplexing procedure after determining that a first PUCCH resource of the first set of PUCCH resources overlaps a second PUCCH resource of the second set of PUCCH resources and a timing constraint for multiplexing is satisfied. The first PUCCH resource is associated with transmission of first UCI. The first UCI multiplexing procedure includes selecting a third PUCCH resource from the second set of PUCCH resources and multiplexing the first UCI in the third PUCCH resource.
1 . A method performed by a User Equipment (UE) for multiplexing Uplink Control Information (UCI), the method comprising:
receiving a Radio Resource Control (RRC) configuration including a first Physical Uplink Control Channel (PUCCH) resource configuration and a second PUCCH resource configuration, the first PUCCH resource configuration including a first sub-slot configuration and the second PUCCH resource configuration including a second sub-slot configuration;
obtaining a first set of PUCCH resources in a first sub-slot configured by the first sub-slot configuration;
obtaining a second set of PUCCH resources in a second sub-slot configured by the second sub-slot configuration, the first sub-slot overlapping the second sub-slot; and
performing a first UCI multiplexing procedure after determining that a first PUCCH resource of the first set of PUCCH resources overlaps a second PUCCH resource of the second set of PUCCH resources and a timing constraint for multiplexing is satisfied, the first PUCCH resource being associated with transmission of first UCI,
wherein the first UCI multiplexing procedure comprises:
selecting a third PUCCH resource from the second set of PUCCH resources, and
multiplexing the first UCI in the third PUCCH resource.
2 . The method of claim 1 , wherein the first PUCCH resource configuration has a low priority, and the second PUCCH resource configuration has a high priority.
3 . The method of claim 1 , wherein the first UCI includes at least one of Channel State Information (CSI), a Scheduling Request (SR) with a low priority, and Hybrid Automatic Repeat reQuest (HARQ)-Acknowledgement (ACK) information associated with the first PUCCH resource configuration.
4 . The method of claim 1 , wherein:
the third PUCCH resource is associated with transmission of second UCI, and
the second UCI includes at least one of a Scheduling Request (SR) with a high priority and Hybrid Automatic Repeat reQuest (HARQ)-Acknowledgement (ACK) information associated with the second PUCCH resource configuration.
5 . The method of claim 1 , wherein the first set of PUCCH resources is obtained by performing a second UCI multiplexing procedure on a third set of PUCCH resources having a low priority in the first sub-slot.
6 . The method of claim 1 , wherein the second set of PUCCH resources is obtained by performing a second UCI multiplexing procedure on a third set of PUCCH resources having a high priority in the second sub-slot.
7 . The method of claim 1 , wherein the first PUCCH resource has a starting symbol within the second sub-slot.
8 . The method of claim 1 , wherein the first UCI multiplexing procedure is further performed on a fourth PUCCH resource of the first set of PUCCH resources, the fourth PUCCH resource being associated with transmission of third UCI and having a starting symbol within the second sub-slot, wherein the first UCI multiplexing procedure further comprises:
determining whether to multiplex the third UCI in the third PUCCH resource based on whether the fourth PUCCH resource overlaps the third PUCCH resource.
9 . The method of claim 1 , further comprising:
obtaining a third set of PUCCH resources in a third sub-slot configured by the second sub-slot configuration, the third sub-slot being after the second sub-slot and overlapping the first sub-slot; and
performing a second UCI multiplexing procedure after determining that a fourth PUCCH resource overlaps a fifth PUCCH resource of the third set of PUCCH resources, the fourth PUCCH resource being associated with transmission of third UCI,
wherein the second UCI multiplexing procedure comprises:
selecting a sixth PUCCH resource from the third set of PUCCH resources, the sixth PUCCH resource being associated with transmission of fourth UCI, and
multiplexing the third UCI and the fourth UCI in the sixth PUCCH resource.
10 . The method of claim 9 , wherein the third UCI is not dropped or multiplexed in one of the second set of PUCCH resources after performing the first UCI multiplexing procedure.
11 . The method of claim 1 , wherein:
the third PUCCH resource is associated with transmission of second UCI, the method further comprising:
multiplexing the first UCI and the second UCI in a Physical Uplink Shared Channel (PUSCH) resource associated with a low priority after determining that the third PUCCH resource overlaps the PUSCH resource.
12 . The method of claim 11 , wherein Downlink Control Information (DCI) scheduling the PUSCH resource indicates that the second UCI is multiplexed in the PUSCH resource.
13 . The method of claim 1 , wherein the timing constraint for multiplexing is satisfied in a case that a time duration between reception of Downlink Control Information (DCI) that schedules a fourth PUCCH resource of the second set of PUCCH resources and the first PUCCH resource is larger than a predefined time duration.
14 . The method of claim 1 , further comprising:
dropping the first UCI after determining that the first PUCCH resource of the first set of PUCCH resources overlaps the second PUCCH resource of the second set of PUCCH resources and the timing constraint for multiplexing is not satisfied.
15 . A user equipment (UE) for multiplexing Uplink Control Information (UCI), the UE comprising:
at least one processor; and
at least one memory coupled to the at least one processor, wherein the at least one memory stores one or more computer-executable instructions that, when executed by the at least one processor, cause the UE to:
receive a Radio Resource Control (RRC) configuration including a first Physical Uplink Control Channel (PUCCH) resource configuration and a second PUCCH resource configuration, the first PUCCH resource configuration including a first sub-slot configuration, and the second PUCCH resource configuration including a second sub-slot configuration;
obtain a first set of PUCCH resources in a first sub-slot configured by the first sub-slot configuration;
obtain a second set of PUCCH resources in a second sub-slot configured by the second sub-slot configuration, the first sub-slot overlapping the second sub-slot; and
perform a first UCI multiplexing procedure after determining that a first PUCCH resource of the first set of PUCCH resources overlaps a second PUCCH resource of the second set of PUCCH resources and a timing constraint for multiplexing is satisfied, the first PUCCH resource being associated with transmission of first UCI,
wherein the first UCI multiplexing procedure comprises:
selecting a third PUCCH resource from the second set of PUCCH resources, and
multiplexing the first UCI in the third PUCCH resource.
16 . The UE of claim 15 , wherein the first PUCCH resource configuration has a low priority, and the second PUCCH resource configuration has a high priority.
17 . The UE of claim 15 , wherein:
the third PUCCH resource is associated with transmission of second UCI,
the first UCI includes at least one of Channel State Information (CSI), a Scheduling Request (SR) with a low priority, and Hybrid Automatic Repeat reQuest (HARQ)-Acknowledgement (ACK) information associated with the first PUCCH resource configuration, and
the second UCI includes at least one of an SR with a high priority and HARQ-ACK information associated with the second PUCCH resource configuration.
18 . The UE of claim 15 , wherein:
the first set of PUCCH resources is obtained by performing a second UCI multiplexing procedure on a third set of PUCCH resources having a low priority in the first sub-slot, and
the second set of PUCCH resources is obtained by performing a second UCI multiplexing procedure on a fourth set of PUCCH resources having a high priority in the second sub-slot.
19 . The UE of claim 15 , wherein the first PUCCH resource has a starting symbol within the second sub-slot.
20 . The UE of claim 15 , wherein the first UCI multiplexing procedure is further performed on a fourth PUCCH resource of the first set of PUCCH resources, the fourth PUCCH resource being associated with transmission of third UCI and having a starting symbol within the second sub-slot, wherein the first UCI multiplexing procedure further comprises:
determining whether to multiplex the third UCI in the third PUCCH resource based on whether the fourth PUCCH resource overlaps the third PUCCH resource.