Below more details about Downlink/Uplink Physical Channel/Signal with their related Functions
| Downlink Physical Channel/Signal Functions | |
| SS | Used for time-frequency synchronization and cell search. |
| PBCH | Carries system information to be broadcast. |
| PDCCH | Transmits control signaling, such as signaling for uplink and downlink scheduling and power control. |
| PDSCH | Carries downlink user data. |
| DMRS | Used for downlink data demodulation and time-frequency synchronization. |
| PTRS | Tracks and compensates downlink phase noise. |
| CSI-RS | Used for downlink channel measurement, beam management, RRM/RLM measurement, and refined time-frequency tracking. |
| Uplink Physical Channel/Signal Function | |
| PRACH | Carries random access request information. |
| PUCCH | Transmits L1/L2 control signaling, such as signaling for HARQ feedback, CQI feedback, and scheduling request indicator. |
| PUSCH | Carries uplink user data. |
| DMRS | Used for uplink data demodulation and time-frequency synchronization. |
| PTRS | Tracks and compensates uplink phase noise. |
| SRS | Used for uplink channel measurement, time-frequency synchronization, and beam management. |
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