Content for TS 24.301 Word version: 17.4.1
5 Elementary procedures for EPS mobility management
5.1 Overview
5.1.1 General
5.1.2 Types of EMM procedures
5.1.3 EMM sublayer states
5.1.4 Coordination between EMM and GMM
5.1.5 Coordination between EMM and MM
5.2 Behaviour of the UE in state EMM-DEREGISTERED and state EMM-REGISTERED
5.2.1 General
5.2.2 UE behaviour in state EMM-DEREGISTERED
5.2.3 UE behaviour in state EMM-REGISTERED
5.3 General on elementary EMM procedures
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5 Elementary procedures for EPS mobility management Word‑p. 58
5.1 Overview Word‑p. 58
5.1.1 General Word‑p. 58
5.1.2 Types of EMM procedures Word‑p. 59
5.1.3 EMM sublayer states Word‑p. 60
5.1.3.1 General Word‑p. 60
5.1.3.2 EMM sublayer states in the UE Word‑p. 60
5.1.3.2.1 General Word‑p. 60
5.1.3.2.2 Main states Word‑p. 60
5.1.3.2.2.1 EMM-NULL Word‑p. 60
5.1.3.2.2.2 EMM-DEREGISTERED Word‑p. 60
5.1.3.2.2.3 EMM-REGISTERED-INITIATED Word‑p. 60
5.1.3.2.2.4 EMM-REGISTERED Word‑p. 60
5.1.3.2.2.5 EMM-DEREGISTERED-INITIATED Word‑p. 61
5.1.3.2.2.6 EMM-TRACKING-AREA-UPDATING-INITIATED Word‑p. 61
5.1.3.2.2.7 EMM-SERVICE-REQUEST-INITIATED Word‑p. 61
5.1.3.2.3 Substates of state EMM-DEREGISTERED Word‑p. 62
5.1.3.2.3.1 General Word‑p. 62
5.1.3.2.3.2 EMM-DEREGISTERED.NORMAL-SERVICE Word‑p. 62
5.1.3.2.3.3 EMM-DEREGISTERED.LIMITED-SERVICE Word‑p. 62
5.1.3.2.3.4 EMM-DEREGISTERED.ATTEMPTING-TO-ATTACH Word‑p. 63
5.1.3.2.3.5 EMM-DEREGISTERED.PLMN-SEARCH Word‑p. 63
5.1.3.2.3.6 EMM-DEREGISTERED.NO-IMSI Word‑p. 63
5.1.3.2.3.7 EMM-DEREGISTERED.ATTACH-NEEDED Word‑p. 63
5.1.3.2.3.8 EMM-DEREGISTERED.NO-CELL-AVAILABLE Word‑p. 63
5.1.3.2.3.9 EMM-DEREGISTERED.eCALL-INACTIVE Word‑p. 63
5.1.3.2.4 Substates of state EMM-REGISTERED Word‑p. 63
5.1.3.2.4.1 General Word‑p. 63
5.1.3.2.4.2 EMM-REGISTERED.NORMAL-SERVICE Word‑p. 63
5.1.3.2.4.3 EMM-REGISTERED.ATTEMPTING-TO-UPDATE Word‑p. 63
5.1.3.2.4.4 EMM-REGISTERED.LIMITED-SERVICE Word‑p. 64
5.1.3.2.4.5 EMM-REGISTERED.PLMN-SEARCH Word‑p. 64
5.1.3.2.4.6 EMM-REGISTERED.UPDATE-NEEDED Word‑p. 64
5.1.3.2.4.7 EMM-REGISTERED.NO-CELL-AVAILABLE Word‑p. 64
5.1.3.2.4.8 EMM-REGISTERED.ATTEMPTING-TO-UPDATE-MM Word‑p. 64
5.1.3.2.4.9 EMM-REGISTERED.IMSI-DETACH-INITIATED Word‑p. 64
5.1.3.3 EPS update status Word‑p. 64
5.1.3.4 EMM sublayer states in the MME Word‑p. 65
5.1.3.4.1 EMM-DEREGISTERED Word‑p. 65
5.1.3.4.2 EMM-COMMON-PROCEDURE-INITIATED Word‑p. 65
5.1.3.4.3 EMM-REGISTERED Word‑p. 65
5.1.3.4.4 EMM-DEREGISTERED-INITIATED Word‑p. 65
5.1.4 Coordination between EMM and GMM Word‑p. 66
5.1.5 Coordination between EMM and MM Word‑p. 67
5.2 Behaviour of the UE in state EMM-DEREGISTERED and state EMM-REGISTERED Word‑p. 67
5.2.1 General Word‑p. 67
5.2.2 UE behaviour in state EMM-DEREGISTERED Word‑p. 67
5.2.2.1 General Word‑p. 67
5.2.2.2 Primary substate selection Word‑p. 68
5.2.2.3 Detailed description of UE behaviour in state EMM-DEREGISTERED Word‑p. 68
5.2.2.3.1 NORMAL-SERVICE Word‑p. 68
5.2.2.3.2 LIMITED-SERVICE Word‑p. 68
5.2.2.3.3 ATTEMPTING-TO-ATTACH Word‑p. 68
5.2.2.3.4 PLMN-SEARCH Word‑p. 69
5.2.2.3.5 NO-IMSI Word‑p. 69
5.2.2.3.6 ATTACH-NEEDED Word‑p. 69
5.2.2.3.7 NO-CELL-AVAILABLE Word‑p. 69
5.2.2.3.8 eCALL-INACTIVE |R14| Word‑p. 70
5.2.2.4 Substate when back to state EMM-DEREGISTERED from another EMM state Word‑p. 70
5.2.3 UE behaviour in state EMM-REGISTERED Word‑p. 70
5.2.3.1 General Word‑p. 70
5.2.3.2 Detailed description of UE behaviour in state EMM-REGISTERED Word‑p. 71
5.2.3.2.1 NORMAL-SERVICE Word‑p. 71
5.2.3.2.2 ATTEMPTING-TO-UPDATE Word‑p. 71
5.2.3.2.3 LIMITED-SERVICE Word‑p. 72
5.2.3.2.4 PLMN-SEARCH Word‑p. 72
5.2.3.2.5 UPDATE-NEEDED Word‑p. 72
5.2.3.2.6 NO-CELL-AVAILABLE Word‑p. 73
5.2.3.2.7 ATTEMPTING-TO-UPDATE-MM Word‑p. 73
5.2.3.2.8 IMSI-DETACH-INITIATED |R9| Word‑p. 73
5.3 General on elementary EMM procedures Word‑p. 73
5.3.1 EMM modes and NAS signalling connection Word‑p. 73
5.3.1.1 Establishment of the NAS signalling connection Word‑p. 73
5.3.1.2 Release of the NAS signalling connection Word‑p. 75
5.3.1.2.1 General |R13| Word‑p. 75
5.3.1.2.2 UE is using EPS services with control plane CIoT EPS optimization |R13| Word‑p. 77
5.3.1.3 Suspend and resume of the NAS signalling connection |R13| Word‑p. 77
5.3.2 Lists of forbidden tracking areas Word‑p. 79
5.3.3 List of forbidden PLMNs for attach in S101 mode Word‑p. 79
5.3.3a Forbidden PLMNs for EPS services |R11| Word‑p. 79
5.3.4 Equivalent PLMNs list Word‑p. 79
5.3.5 Handling of the periodic tracking area update timer and mobile reachable timer (S1 mode only) Word‑p. 79
5.3.6 Handling of timer T3402 Word‑p. 81
5.3.7 Handling of the Local Emergency Numbers List and the Extended Local Emergency Numbers List Word‑p. 81
5.3.7a Specific requirements for UE configured to use timer T3245 |R10| Word‑p. 83
5.3.7b Specific requirements for UE when receiving non-integrity protected reject messages |R13| Word‑p. 83
5.3.8 Abnormal cases in the UE Word‑p. 86
5.3.9 Handling of NAS level mobility management congestion control |R10| Word‑p. 87
5.3.9A Handling of congestion control for transport of user data via the control plane |R14| Word‑p. 88
5.3.10 Access class control |R11| Word‑p. 88
5.3.11 Power saving mode |R12| Word‑p. 88
5.3.12 Extended idle-mode DRX cycle |R13| Word‑p. 89
5.3.13 Interaction between power saving mode and extended idle mode DRX cycle |R13| Word‑p. 90
5.3.14 Dedicated core network |R13| Word‑p. 90
5.3.15 CIoT EPS optimizations |R13| Word‑p. 90
5.3.16 Restriction on use of enhanced coverage |R14| Word‑p. 92
5.3.17 Service Gap Control |R15| Word‑p. 92
5.3.18 Restricted local operator services |R16| Word‑p. 94
5.3.19 Core Network selection and redirection for UEs using CIoT optimizations |R16| Word‑p. 94
5.3.19.1 Core network selection Word‑p. 94
5.3.19.2 Redirection of the UE by the core network Word‑p. 94
5.3.20 UE radio capability signalling optimisation |R16| Word‑p. 95
5.3.21 Wake-up signal assistance |R16| Word‑p. 96
