5G QCI in the QoS of the 5G Network
5G QCI "Quality of Service Class Identifier", is a numerical identifier that corresponds to a specific set of QoS parameters such as,
- Resource Type: Indicates whether the traffic is guaranteed bit rate (GBR) or non-GBR.
- Priority Level: A value between 1 and 256, with lower values indicating higher priority.
- Packet Delay Budget (PDB): The maximum acceptable delay for the data packet transmission.
- Packet Error Rate (PER): The maximum acceptable rate of erroneous data packets.
- Averaging Window: The time period over which the PER is calculated.
Accordingly, each 5G QCI has certain use cases such as,
- QCI 1: Supports real-time, interactive, and conversational services like VoIP.
- QCI 5: Supports IMS signaling.
- QCI 9: Supports best-effort data services.
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5G Core Network Architecture
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What is an ‘EPS Bearer’ in LTE ?
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