LTE RRC: Security Mode Complete

Direction: UE => E-UTRAN
Signalling Radio Bearer: SRB1
RLC Mode: AM
Logical Channel: DCCH
Transport Channel: UL-SCH

The SECURITY MODE COMPLETE message is used to confirm the successful completion of a SECURITY MODE COMMAND.

The UE shall send SECURITY MODE COMPLETE message integrity protected but un-ciphered.
 i.e., the UE doesn’t start ciphering in the uplink before it has sent the SECURITY MODE COMPLETE message to the eNodeB

Example: SECURITY MODE COMPLETE














Reference: 3GPP TS 36.331

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