Format Types Lengh of Symbols Number of bits Descriptions (based on 38.300 - 5.3.3)
Format 0 1~2 <= 2 Short PUCCH.with UE multiplexing in the same PRB. Based on sequence selection.
Format 1 4~14 <= 2 Long PUCCH.with multiplexing in the same PRB. time-multiplex the UCI and DMRS
Format 2 1~2 > 2 Short PUCCH.with no multiplexing in the same PRB. frequency multiplexes UCI and DMRS
Format 3 4~14 > 2 Long PUCCH.with large UCI payloads and with no multiplexing capacity in the same PRBtime-multiplex the UCI and DMRS
Format 4 4~14 > 2 Long PUCCH.with moderate UCI payloads and with some multiplexing capacity(max 4 UE) in the same PRB.