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what is RLF in what all sceanrios it triggered and how can we debug it?

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what is RLF in what all sceanrios it triggered and how can we debug it?
posted May 17, 2016 by Chotu Vats

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2 Answers

+1 vote

Radio Link Failure :When UE is in Connected mode then only UE will have Radio Link.Basically the Radio link is between UE and eNB entities only.

Radio Link Failure Causes:1.)PDCCH Block Error Rate(BLER) is >10% is Observed at PHY.
2.)RRC Connection Reconfiguration Failure (To Setup/Release Measurements,To Establish/Modify/Release of Bearers)
3.)RRC Connection Reconfiguration Failure (Handover Failure)
4.)Max RACH Preamble Transmission Reached.
5.)Max RLC Retransmissions Reached.
6.)PDCP Integrity Check Failure.
7.)Uplink Time Alignment Timer Expiry(Lost Uplink Synchronization).

answer May 17, 2016 by Mallikharjuna Reddy
+1 vote

Radio Link Failure:When UE is in Connected mode we have a Radio Link between UE and e-NodeB and the Radio Link is Existing between UE and eNodeB only.

Radio Link Failure Causes: 1.)PDCCH Block Error Rate (BLER) is> 10% is Observed at PHY.
2.)RRC Connectio Reconfiguration Failure(To Setup/Release Measurements,To Setup/Modify/Release Bearers).
3.)RRC Connection Reconfiguration Failure(Handover Failure).
4.) Max RACH Preamble Transmission reached.
5.)Max RLC Retransmission reached(RLC Unrecoverable error).
6.)PDCP Integrity check Failure.
7.)Uplink Time alignment Timer Expiry.

answer May 17, 2016 by anonymous
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