5G • Core Network
Delay-Critical GBR
Delay-Critical Guaranteed Bit Rate
Specialized GBR flow with strict low packet delay budgets (5-20 ms) and Maximum Data Burst Volume ceilings.
Technical Explanation
Designed for URLLC and factory automation (e.g. 5QI 82, 83, 84, 85), Delay-Critical GBR guarantees both bandwidth and strict packet delay budgets (down to 5 ms). It specifies a Maximum Data Burst Volume (MDBV); if the application injects more data than MDBV within the PDB window, excess packets are policed.
Key Functions
- Combines guaranteed bit rate with ultra-low 5-20 ms packet delay budgets
- Guarantees packet delivery within budget for bursts up to MDBV
- Engineered for factory robotics, smart grid automation, and autonomous driving
Specifications
3GPP TS 23.501
Interfaces
UuN3
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