Digital cellular telecommunications system (Phase 2+) (GSM); Mobile radio interface layer 3 specification; GSM/EDGE Radio Resource Control (RRC) protocol (3GPP TS 44.018 version 15.5.0 Release 15)

RTS/TSGR-0644018vf50

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Status
Published
Publication Date
07-Apr-2020
Current Stage
12 - Completion
Completion Date
08-Apr-2020
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ETSI TS 144 018 V15.5.0 (2020-04) - Digital cellular telecommunications system (Phase 2+) (GSM); Mobile radio interface layer 3 specification; GSM/EDGE Radio Resource Control (RRC) protocol (3GPP TS 44.018 version 15.5.0 Release 15)
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ETSI TS 144 018 V15.5.0 (2020-04)






TECHNICAL SPECIFICATION
Digital cellular telecommunications system (Phase 2+) (GSM);
Mobile radio interface layer 3 specification;
GSM/EDGE Radio Resource Control (RRC) protocol
(3GPP TS 44.018 version 15.5.0 Release 15)

R
GLOBAL SYSTEM FOR
MOBILE COMMUNICATIONS

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3GPP TS 44.018 version 15.5.0 Release 15 1 ETSI TS 144 018 V15.5.0 (2020-04)



Reference
RTS/TSGR-0644018vf50
Keywords
GSM
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3GPP TS 44.018 version 15.5.0 Release 15 2 ETSI TS 144 018 V15.5.0 (2020-04)
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3GPP TS 44.018 version 15.5.0 Release 15 3 ETSI TS 144 018 V15.5.0 (2020-04)
Contents
Intellectual Property Rights . 2
Legal Notice . 2
Modal verbs terminology . 2
Foreword . 19
1 Scope . 20
1.1 Scope of the Technical Specification . 20
1.2 Application to the interface structures . 20
1.3 Structure of layer 3 procedures . 20
1.4 Test procedures . 20
1.5 Use of logical channels . 21
1.6 Overview of control procedures . 21
1.6.1 List of procedures . 21
1.7 Applicability of implementations . 23
1.7.1 Voice Group Call Service (VGCS) and Voice Broadcast Service (VBS). 23
1.7.2 General Packet Radio Service (GPRS) . 23
1.7.3 Multimedia Broadcast/Multicast Service (MBMS) . 23
1.8 Restrictions . 24
2 References . 24
2.1 Abbreviations . 28
2.1.1 Random values . 28
2.1.2 Vocabulary . 28
3 Radio Resource management procedures . 31
3.1 Overview/General . 31
3.1.1 General . 31
3.1.2 Services provided to upper layers . 31
3.1.2.1 Idle mode . 31
3.1.2.2 Dedicated mode . 32
3.1.2.3 Group receive mode . 32
3.1.2.4 Group transmit mode. 32
3.1.2.5 Packet idle mode . 33
3.1.2.6 Packet transfer mode . 33
3.1.2.7 Dual transfer mode (DTM) . 33
3.1.3 Services required from data link and physical layers . 33
3.1.4 Change of dedicated channels . 33
3.1.4.1 Change of dedicated channels using SAPI = 0 . 33
3.1.4.2 Change of dedicated channels using other SAPIs than 0 . 34
3.1.5 Procedure for Service Request and Contention Resolution . 34
3.1.6 Preemption . 35
3.2 Idle mode procedures and general procedures in packet idle and packet transfer modes . 36
3.2.1 Mobile Station side . 36
3.2.2 Network side . 38
3.2.2.1 System information broadcasting . 38
3.2.2.2 Paging . 40
3.2.2.3 Sending of ETWS Primary Notification . 40
3.2.3 Inter-RAT cell re-selection based on priority information . 41
3.2.3.1 General . 41
3.2.3.2 Common priorities information . 41
3.2.3.3 Provision of individual priorities information . 42
3.2.4 (void) . 42
3.3 RR connection establishment . 42
3.3.1 RR connection establishment initiated by the mobile station . 42
3.3.1.1 Entering the dedicated mode : immediate assignment procedure . 43
3.3.1.1.1 Permission to access the network . 43
3.3.1.1.1a Implicit reject indication from the network . 43
ETSI

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3GPP TS 44.018 version 15.5.0 Release 15 4 ETSI TS 144 018 V15.5.0 (2020-04)
3.3.1.1.2 Initiation of the immediate assignment procedure . 44
3.3.1.1.3 Answer from the network . 45
3.3.1.1.3.1 On receipt of a CHANNEL REQUEST message . 45
3.3.1.1.3.2 Assignment rejection . 46
3.3.1.1.3.2a Implicit Reject procedure . 46
3.3.1.1.4 Assignment completion . 47
3.3.1.1.4.1 Early classmark sending . 47
3.3.1.1.4.2 Service information sending . 48
3.3.1.1.5 Abnormal cases . 48
3.3.1.2 Entering the group transmit mode: uplink access procedure . 49
3.3.1.2.1 Mobile station side . 49
3.3.1.2.1.1 Uplink investigation procedure - talker priority not supported by the network . 49
3.3.1.2.1.1a Uplink investigation procedure - talker priority supported by the network . 50
3.3.1.2.1.2 Uplink access procedure with talker priority not supported by the network . 50
3.3.1.2.1.2a Uplink access procedure - with talker priority supported by the network using uplink
access procedure . 51
3.3.1.2.1.2a.1 Talker priority normal, privileged or emergency . 51
3.3.1.2.1.2a.2 Emergency mode reset request . 52
3.3.1.2.1.2b Priority uplink request procedure . 52
3.3.1.2.1.2b.1 Talker priority privileged or emergency . 52
3.3.1.2.1.2b.2 Emergency mode reset request . 53
3.3.1.2.1.2b.3 Validation of priority uplink requests for ciphered voice group calls . 53
3.3.1.2.1.2c Uplink access procedure for sending application-specific data . 53
3.3.1.2.1.2c.1 General . 53
3.3.1.2.1.2c.2 Using the Voice Group Call Channel . 54
3.3.1.2.1.2c.3 Using the RACH . 54
3.3.1.2.2 Network side - talker priority not supported by the network . 54
3.3.1.2.2a Network side - network supports talker priority using uplink access procedure . 54
3.3.1.2.2a.1 Uplink FREE. 54
3.3.1.2.2a.1.1 Uplink Access cause - Normal, Privileged, or Emergency priority request . 54
3.3.1.2.2a.1.2 Uplink Access cause - Emergency mode reset request . 55
3.3.1.2.2a.2 Uplink BUSY . 55
3.3.1.2.2a.2.1 Uplink Access with cause priority less than or equal to current talker priority . 55
3.3.1.2.2a.2.2 Uplink Access with cause priority higher than current talker priority. 55
3.3.1.2.2a.2.3 Uplink Access with cause Emergency mode reset request . 55
3.3.1.2.2b Network side - network supports talker priority using priority uplink procedure . 55
3.3.1.2.2b.1 Uplink FREE. 55
3.3.1.2.2b.1.1 Uplink Access cause - Normal, Privileged, or Emergency priority request . 55
3.3.1.2.2b.1.2 Uplink Access cause - Emergency mode reset request . 56
3.3.1.2.2b.2 Uplink BUSY . 56
3.3.1.2.2b.2.1 Priority Uplink Request with cause priority less than or equal to current talker priority . 56
3.3.1.2.2b.2.2 Priority Uplink Request with cause priority higher than current talker priority . 56
3.3.1.2.2b.2.3 Priority Uplink Request with cause Emergency mode reset request . 56
3.3.1.2.2b.2.4 Validation of Priority Uplink Requests for ciphered voice group calls . 56
3.3.1.2.2c Network side – network supports sending application-specific data by mobile station . 57
3.3.1.2.2c.1 General . 57
3.3.1.2.2c.2 Using the Voice Group Call Channel . 57
3.3.1.2.2c.3 Using the RACH . 57
3.3.1.2.3 Abnormal cases . 57
3.3.1.3 Dedicated mode and GPRS . 57
3.3.1.4 Preliminary Access Barring Check . 57
3.3.2 Paging procedure for RR connection establishment . 58
3.3.2.1 Paging initiation by the network . 58
3.3.2.1.1 Paging initiation using paging subchannel on CCCH. 58
3.3.2.1.2 Paging initiation using paging subchannel on PCCCH . 59
3.3.2.1.3 Paging initiation using PACCH . 59
3.3.2.2 Paging response . 60
3.3.2.3 Abnormal cases . 60
3.3.3 Notification procedure . 60
3.3.3.1 Notification of a call. 60
3.3.3.2 Joining a VGCS or VBS call . 61
3.3.3.2.1 General . 61
ETSI

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3GPP TS 44.018 version 15.5.0 Release 15 5 ETSI TS 144 018 V15.5.0 (2020-04)
3.3.3.2.2 Segmentation of notifications . 62
3.3.3.2.2.1 General . 62
3.3.3.2.2.2 Segmentation of notifications on NCH . 62
3.3.3.2.2.3 Segmentation of notifications on PCH . 64
3.3.3.3 Reduced NCH monitoring mechanism. 65
3.3.3.4 Notification response procedure . 66
3.4 Procedures in dedicated mode and in group transmit mode . 66
3.4.1 SACCH procedures. 66
3.4.1.1 General . 66
3.4.1.2 Measurement Report and Enhanced Measurement Report . 67
3.4.1.2.1 Parameters for Measurements and Reporting . 68
3.4.1.2.1.1 Deriving the 3G Neighbour Cell list from the 3G Neighbour Cell Description sent on
BCCH or on SACCH . 69
3.4.1.2.1.1a Deriving the E-UTRAN Neighbour Cell list from the Repeated E-UTRAN Neighbour

Cell information sent on BCCH or on SACCH . 70
3.4.1.2.1.1b Deriving the E-UTRAN Neighbour Cell list from the Repeated E-UTRAN Neighbour
Cell information sent on BCCH or on SACCH (abnormal cases) . 71
3.4.1.2.1.2 Deriving the GSM Neighbour Cell list from the BSICs and the BA (list) . 72
3.4.1.2.1.3 Deriving the Neighbour Cell list from the GSM Neighbour Cell list and the 3G Neighbour
Cell list . 72
3.4.1.2.1.4 Real Time Differences . 72
3.4.1.2.1.5 Report Priority Description . 72
3.4.1.2.1.6 GPRS Parameters . 73
3.4.1.2.1.7 The 3G Cell Reselection list . 73
3.4.1.2.1.7a (void). 73
3.4.1.2.1.7b Closed Subscriber Group Information . 73
3.4.1.2.1.7c The 3G Frequency list . 73
3.4.1.2.1.8 CCN Support description . 74
3.4.1.2.1.9 3G_CCN_ACTIVE Description . 74
3.4.1.2.1.9a E-UTRAN_CCN_ACTIVE Description . 74
3.4.1.2.1.10 GSM Neighbour Cell Selection parameters . 74
3.4.1.2.1.11 Fast Acquisition of System Information . 75
3.4.1.2.1.12 Reporting of CSG Cells and Hybrid Cells . 76
3.4.1.3 Extended measurement report $(MAFA)$ . 76
3.4.2 Transfer of messages and link layer service provision . 77
3.4.3 Channel assignment procedure . 77
3.4.3.1 Channel assignment initiation . 77
3.4.3.2 Assignment completion . 79
3.4.3.3 Abnormal cases . 79
3.4.4 Handover procedure . 80
3.4.4.1 Handover initiation. 81
3.4.4.2 Physical channel establishment . 84
3.4.4.2.1 Finely synchronized cell case . 84
3.4.4.2.2 Non synchronized cell case . 84
3.4.4.2.3 Pseudo-synchronized cell case . 85
3.4.4.2.4 Pre-synchronized cell case. 85
3.4.4.3 Handover completion . 86
3.4.4.4 Abnormal cases . 86
3.4.4a Handover to UTRAN procedure . 87
3.4.4a.1 Handover to UTRAN initiation . 88
3.4.4a.2 Handover to UTRAN completion . 88
3.4.4a.3 Abnormal cases . 88
3.4.4b Handover to CDMA2000 procedure . 89
3.4.
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