5G • Spectrum
SCS 240 kHz
240 kHz Subcarrier Spacing (Numerology mu=4)
Ultra-wide subcarrier spacing numerology used primarily for SS/PBCH block (SSB) transmission in FR2.
Technical Explanation
Numerology mu=4 uses 240 kHz subcarrier spacing, yielding 16 slots per 1 ms subframe (62.5 microsecond slot duration). In 3GPP specifications, 240 kHz SCS is reserved primarily for SSB beam sweeping and initial cell search in FR2 mmWave spectrum, compressing SSB duration to enable rapid 64-beam sweeps.
Key Functions
- Compresses SSB transmission duration to approximately 17 microseconds
- Enables ultra-fast 64-beam sweeping bursts within a 5 ms half-frame
- Used for SSB search and discovery in millimeter-wave frequency bands
Specifications
3GPP TS 38.211
Interfaces
Uu
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