The physical Uplink control channel, PUCCH, carries Uplink control information (UCI), and is never transmitted simultaneously with the PUSCH from the same UE.
A maximum of 4 resource blocks are reserved for PUCCH in this example. The physical resources used for PUCCH depend on parameters given by higher layers.
The following combinations of Uplink control information (UCI) are supported on PUCCH:
HARQ-ACK using PUCCH format 1a or 1b
Scheduling request (SR) using PUCCH format 1
HARQ-ACK and SR using PUCCH format 1a or 1b
CQI/PMI or RI using PUCCH format 2
CQI/PMI or RI and HARQ-ACK using PUCCH format
– 2a or 2b for normal cyclic prefix
– 2 for extended cyclic prefix