5G • RAN
Timer T310
Radio Link Failure Timer
Timer started upon N310 consecutive out-of-sync indications; if not stopped by N311, RLF is declared.
Technical Explanation
Configured in RadioLinkMonitoringConfig (values 0ms to 6000ms, typically 1000ms), T310 gives the radio link a grace period to recover from deep shadowing or antenna blockage. If N311 consecutive in-sync indications arrive before T310 expires, the link is salvaged; otherwise, Radio Link Failure is declared.
Key Functions
- Supervises radio link recovery during deep channel fading
- Stops if channel recovers with N311 consecutive in-sync indications
- Triggers Radio Link Failure (RLF) and connection re-establishment upon expiry
Specifications
3GPP TS 38.331
Interfaces
Uu
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