5G • Core Network
PER
Packet Error Rate
Upper bound on the fraction of user plane packets lost or dropped during transit across the 5G system.
Technical Explanation
Packet Error Rate (PER) defines the upper bound for uncorrected packet loss on non-congested radio channels. It ranges from 10^-2 for conversational voice (5QI 1, where lost packets are masked by codecs) down to 10^-6 for industrial telemetry and financial trading (5QI 82/83).
Key Functions
- Specifies maximum acceptable packet loss rate across the 5G network
- Ranges from 10^-2 (conversational voice) down to 10^-6 (mission-critical)
- Determines RLC retransmission limits and physical layer MCS backoffs
Specifications
3GPP TS 23.501
Interfaces
Uu
Related 5G Concepts
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