5G • RAN
PUCCH Format 1
Long PUCCH Format for 1-2 Bits
Long 4-14 symbol PUCCH carrying 1-2 bits of UCI using BPSK/QPSK modulation and time-domain Orthogonal Cover Code (OCC).
Technical Explanation
PUCCH Format 1 spans 4 to 14 OFDM symbols on 1 PRB. It multiplexes DMRS and data on alternating symbols, applying a time-domain Orthogonal Cover Code (OCC) across data symbols and cyclic shifts across DMRS to achieve high processing gain and deep cell coverage.
Key Functions
- Provides high-coverage uplink feedback for 1-2 bits of HARQ-ACK/SR
- Spans 4 to 14 OFDM symbols with alternating DMRS and data symbols
- Enables multi-UE code-domain multiplexing using orthogonal cover codes
Specifications
3GPP TS 38.211, TS 38.213
Interfaces
Uu
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