5G NR QoS (5QI) Flow Calculator
Evaluate 3GPP TS 23.501 standardized 5QI parameters including Packet Delay Budget (PDB), Packet Error Rate (PER), Priority Level, Resource Type, and Bit Rate targets.
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Inputs
Live
Math
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Related
Enter parameters and click Calculate to view results
Formula & Theory
5QI Mapping → PDB (ms), PER (10⁻ˣ), Priority Level (1-90), Resource Type (GBR / Non-GBR / Delay-Critical GBR)This formula is used to calculate antenna parameters for 5g nr qos (5qi) flow calculator.
Overview
Use this 5G NR Quality of Service (QoS) calculator to look up and evaluate 3GPP TS 23.501 standardized 5QI (5G QoS Identifier) profiles across eMBB, URLLC, and mMTC service classes.
Input Guide
Enter Standardized 5QI Index, Guaranteed Bit Rate (GBR - Optional), Measured Network One-Way Latency exactly in the units shown by this 5g nr qos (5qi) flow. Check the operating band, unit prefix, and decimal position before calculating; these are the inputs used by the formula.
- Standardized 5QI Index.
- Guaranteed Bit Rate (GBR - Optional) — use Mbps.
- Measured Network One-Way Latency — use ms.
Output Guide
The results describe the calculated 5g nr qos (5qi) flow values for the inputs you entered. Check each value against the available space, selected components, feed system, and operating conditions before making a final design decision.
How This Calculator Works
The 5G NR QoS (5QI) Flow uses 5QI Mapping → PDB (ms), PER (10⁻ˣ), Priority Level (1-90), Resource Type (GBR / Non-GBR / Delay-Critical GBR). Supply Standardized 5QI Index, Guaranteed Bit Rate (GBR - Optional) (Mbps), Measured Network One-Way Latency (ms) in the displayed units, then use the calculated values as the first engineering target for this 5g nr design or analysis.
Design Notes
In 5G Standalone (SA) 5GC, QoS is enforced per QoS Flow rather than per bearer (as in LTE). Each 5QI defines the Packet Delay Budget (PDB), Packet Error Rate (PER), Priority Level, and Resource Type (GBR, Non-GBR, or Delay-Critical GBR).
Build and Tuning Notes
For GBR and Delay-Critical GBR flows, the 5G RAN enforces Guaranteed Bit Rate (GBR) and Maximum Bit Rate (MFBR) parameters over the UPF and gNodeB scheduler to guarantee bandwidth and tight latency bounds.
Frequently Asked Questions
What is a 5QI in 5G NR?
A 5QI (5G QoS Identifier) is a scalar index pointing to specific 3GPP QoS characteristics (delay, loss, priority) used by gNodeBs and UPFs to schedule user plane traffic.
What is the difference between GBR, Non-GBR, and Delay-Critical GBR?
GBR flows reserve dedicated radio/transport bandwidth (e.g., VoNR). Non-GBR flows share remaining best-effort capacity (e.g., web browsing). Delay-Critical GBR guarantees ultra-low Packet Delay Budgets (e.g., 5–10 ms for URLLC).
How is Packet Delay Budget (PDB) measured in 5G?
PDB specifies the upper bound for the delay that a packet may experience between the UE and the 5G Core N6 termination point (UPF).
Alex Warren
B.Sc. in Electrical & Electronic Engineering (EEE)
Alex specialises in antenna design and wave propagation. His expertise helps ensure these calculators present practical RF concepts, useful design estimates, and clear engineering guidance for students, HAM operators, and wireless professionals.