5G Uplink Control Information (UCI) multiplexing on PUSCH

Fig. 1 Matlab diagram of UCI multiplexing on PUSCH.

Uplink Control Information, as the name suggests, carries control signals from UE-to-gNB in the uplink direction (it is the counterpart of Downlink Control Information or DCI from gNB-to-UE).

Generally, PUCCH (Physical Uplink Control Channel) is supposed to carry the UCI. On the other hand, the UL data is sent via PUSCH (Physical Uplink Shared Channel).