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Friday, July 30, 2021

Home 5G knowledge NR Physical Channels and Signals

NR Physical Channels and Signals


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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