Content for TS 24.301 Word version: 18.5.0
4.3 UE mode of operation
4.4 NAS security
4.4.1 General
4.4.2 Handling of EPS security contexts
4.4.3 Handling of NAS COUNT and NAS sequence number
4.4.4 Integrity protection of NAS signalling messages
4.4.5 Ciphering of NAS signalling messages
4.5 Disabling and re-enabling of UE's E-UTRA capability
4.6 Applicability of procedures
4.7 EPS mobility management and EPS session management in NB-S1 mode
4.8 EPS mobility management and EPS session management in WB-S1 mode for IoT
4.9 Disabling and re-enabling of UE's NB-IoT capability
4.10 Support of MUSIM features
4.11 Satellite access for CIoT
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4.3 UE mode of operation p. 36
4.3.1 General p. 36
4.3.2 Change of UE mode of operation p. 37
4.4 NAS security p. 44
4.4.1 General p. 44
4.4.2 Handling of EPS security contexts p. 44
4.4.2.1 General p. 44
4.4.2.2 Establishment of a mapped EPS security context during intersystem handover p. 45
4.4.2.3 Establishment of secure exchange of NAS messages p. 46
4.4.2.4 Change of security keys p. 48
4.4.2.5 Derivation of keys at CS to PS SRVCC handover from A/Gb mode to S1 mode or from Iu mode to S1 mode |R11| p. 49
4.4.3 Handling of NAS COUNT and NAS sequence number p. 50
4.4.3.1 General p. 50
4.4.3.2 Replay protection p. 51
4.4.3.3 Integrity protection and verification p. 51
4.4.3.4 Ciphering and deciphering p. 51
4.4.3.5 NAS COUNT wrap around p. 51
4.4.4 Integrity protection of NAS signalling messages p. 52
4.4.4.1 General p. 52
4.4.4.2 Integrity checking of NAS signalling messages in the UE p. 52
4.4.4.3 Integrity checking of NAS signalling messages in the MME p. 53
4.4.5 Ciphering of NAS signalling messages p. 55
4.5 Disabling and re-enabling of UE's E-UTRA capability p. 55
4.6 Applicability of procedures |R10| p. 58
4.6.1 Relay nodes p. 58
4.7 EPS mobility management and EPS session management in NB-S1 mode |R13| p. 59
4.8 EPS mobility management and EPS session management in WB-S1 mode for IoT |R13| p. 59
4.8.1 UE not using satellite E-UTRAN access |R17| p. 59
4.8.2 UE using satellite E-UTRAN access |R17| p. 60
4.9 Disabling and re-enabling of UE's NB-IoT capability |R15| p. 60
4.10 Support of MUSIM features |R17| p. 61
4.11 Satellite access for CIoT |R17| p. 61
