5G • RAN
SFI-RNTI
Slot Format Indication RNTI
Group RNTI used to scramble DCI Format 2_0 broadcasting dynamic TDD slot format indicators to multiple UEs.
Technical Explanation
Configured via RRC parameter sfi-RNTI, a group of UEs in a cell share this identifier. UEs monitor Type3-PDCCH CSS to decode DCI Format 2_0 scrambled by SFI-RNTI, learning the dynamic symbol direction (Downlink, Uplink, Flexible) for upcoming slots.
Key Functions
- Group identifier shared across multiple UEs within a serving cell
- Scrambles DCI Format 2_0 carrying dynamic slot format tables
- Enables real-time adaptation of TDD symbol directions
Specifications
3GPP TS 38.213
Interfaces
Uu
Related 5G Concepts
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