HARQ-ACK payload reduction methods for UCI multiplexing with different priorities
A user equipment (UE) is described. The UE includes a processor configured to determine a hybrid automatic repeat request-acknowledgement (HARQ-ACK) pay load reduction for multiplexing HARQ-ACK with different priorities. The processor is also configured to multiplex the HARQ-ACK with different priorities based on the HARQ-ACK payload reduction. The UE also includes transmitting circuitry configured to transmit the multiplexed HARQ-ACK.
1 . A user equipment (UE), comprising:
a processor configured to:
determine a hybrid automatic repeat request-acknowledgement (HARQ-ACK) payload size reduction for multiplexing different HARQ-ACKs having different priorities, the HARQ-ACK payload size reduction comprising applying at least one compression and bundling approach to the HARQ-ACKs based on the HARQ-ACKs' respective priorities, and
perform, for each HARQ-ACK, a HARQ-ACK bundling based on the HARQ-ACK's applied compression and bundling approach, the HARQ-ACK bundling for reducing a payload size of the corresponding HARQ-ACK.
2 . The UE of claim 1 , wherein a first compression and bundling approach comprises code block group CBG-level HARQ-ACK compression or bundling with a target CBG configuration.
3 . The UE of claim 1 , wherein a first compression and bundling approach comprises code block group (CBG) to transport block (TB)-level HARQ-ACK compression or bundling.
4 . The UE of claim 3 , wherein a CBG HARQ-ACK bit of a TB is bundled into one bit of a TB-level HARQ-ACK.
5 . The UE of claim 1 , wherein a first compression and bundling approach comprises spatial bundling between transport blocks (TBs) in a physical downlink shared channel (PDSCH) transmission.
6 . The UE of claim 1 , wherein a first compression and bundling approach comprises grouping HARQ-ACK bits based on a group size.
7 . A base station (gNB), comprising:
a processor configured to:
determine a hybrid automatic repeat request-acknowledgement (HARQ-ACK) payload size reduction for multiplexing different HARQ-ACKs having different priorities, the HARQ-ACK payload size reduction comprising applying at least one compression and bundling approach to the HARQ-ACKs based on the HARQ-ACKs' respective priorities, a HARQ-ACK bundling being performed for each HARQ-ACK based on the HARQ-ACK's applied compression and bundling approach, the HARQ-ACK bundling for reducing a payload size of the corresponding HARQ-ACK; and
receiving circuitry configured to receive multiplexed HARQ-ACKs having different priorities based on the HARQ-ACK payload size reduction.
8 . The gNB of claim 7 , wherein a first compression and bundling approach comprises code block group (CBG)-level HARQ-ACK compression or bundling with a target CBG configuration.
9 . The gNB of claim 7 , wherein a first compression and bundling approach comprises code block group (CBG) to transport block (TB)-level HARQ-ACK compression or bundling.
10 . The gNB of claim 9 , wherein a CBG HARQ-ACK bit of a TB is bundled into one bit of a TB-level HARQ-ACK.
11 . The gNB of claim 7 , wherein a first compression and bundling approach comprises spatial bundling between TBs in a physical downlink shared channel (PDSCH) transmission.
12 . The gNB of claim 7 , wherein a first compression and bundling approach comprises grouping HARQ-ACK bits based on a group size.
13 . A method by a user equipment (UE), comprising:
determining a hybrid automatic repeat request-acknowledgement (HARQ-ACK) payload size reduction for multiplexing different HARQ-ACKs having different priorities, the HARQ-ACK payload size reduction comprising applying at least one compression and bundling approach to the HARQ-ACKs based on the HARQ-ACKs' respective priorities; and
performing, for each HARQ-ACK, a HARQ-ACK bundling based on the HARQ-ACK's applied compression and bundling approach, the HARQ-ACK bundling for reducing a payload size of the corresponding HARQ-ACK.