How many UEs can be multiplexed in PUCCH Format 1 in 5G?
My understanding is:
Since cyclic shift version of dmrs is not orthogonal with itself.
In that case, channel estimation can’t be done properly.
Then we can only multiplex 7 UEs.
PUCCH format 1 is for long PUCCH with small payloads of up to two bits and User Equipment multiplexing capacity of up to 84 UEs without frequency hopping and 36 UEs with frequency hopping in the same PRB. PUCCH format 2 is for Short PUCCH with large payloads of more than two bits and no UE multiplexing. PUCCH format 3 is for Long PUCCH with large UCI payloads and no UE multiplexing capability in the same PRBs. Finally, PUCCH format 4 is for Long PUCCH, moderate UCI payloads, and multiplexing capacity of up to 4 UEs in the same PRBs.
As mentioned in standards, it depends on number of symbols.
We can multiplex 84 UEs.
