5G • RAN
SIB9
System Information Block 9
Broadcasts Universal Coordinated Time (UTC), GPS time, and local time zone information.
Technical Explanation
SIB9 provides precise network time synchronization to UEs, transmitting UTC time, leap seconds, local time zone offset, and daylight savings time information. This timing is utilized for accurate timestamping in IoT, billing verification, and positioning applications.
Key Functions
- Distributes GPS and Universal Coordinated Time (UTC) to UEs
- Provides local time zone and daylight saving time adjustments
- Supports time-synchronized industrial IoT and logging applications
Specifications
3GPP TS 38.331
Interfaces
Uu
Related 5G Concepts
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