ETSI TS 144 018 V15.4.0 (2019-04)

ETSI TS 144 018 V15.4.0 (2019-04)






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 15.4.0 Release 15)

R
GLOBAL SYSTEM FOR
MOBILE COMMUNICATIONS

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3GPP TS 44.018 version 15.4.0 Release 15 1 ETSI TS 144 018 V15.4.0 (2019-04)



Reference
RTS/TSGR-0644018vf40
Keywords
GSM
ETSI
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3GPP TS 44.018 version 15.4.0 Release 15 2 ETSI TS 144 018 V15.4.0 (2019-04)
Intellectual Property Rights
Essential patents
IPRs essential or potentially essential to normative deliverables may have been declared to ETSI. The information
pertaining to these essential IPRs, if any, is publicly available for ETSI members and non-members, and can be found
in ETSI SR 000 314: "Intellectual Property Rights (IPRs); Essential, or potentially Essential, IPRs notified to ETSI in
respect of ETSI standards", which is available from the ETSI Secretariat. Latest updates are available on the ETSI Web
server (https://ipr.etsi.org/).
Pursuant to the ETSI IPR Policy, no investigation, including IPR searches, has been carried out by ETSI. No guarantee
can be given as to the existence of other IPRs not referenced in ETSI SR 000 314 (or the updates on the ETSI Web
server) which are, or may be, or may become, essential to the present document.
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Foreword
This Technical Specification (TS) has been produced by ETSI 3rd Generation Partnership Project (3GPP).
The present document may refer to technical specifications or reports using their 3GPP identities, UMTS identities or
GSM identities. These should be interpreted as being references to the corresponding ETSI deliverables.
The cross reference between GSM, UMTS, 3GPP and ETSI identities can be found under
http://webapp.etsi.org/key/queryform.asp.
Modal verbs terminology
In the present document "shall", "shall not", "should", "should not", "may", "need not", "will", "will not", "can" and
"cannot" are to be interpreted as described in clause 3.2 of the ETSI Drafting Rules (Verbal forms for the expression of
provisions).
"must" and "must not" are NOT allowed in ETSI deliverables except when used in direct citation.
ETSI

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3GPP TS 44.018 version 15.4.0 Release 15 3 ETSI TS 144 018 V15.4.0 (2019-04)
Contents
Intellectual Property Rights . 2
Foreword . 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 . 20
1.6 Overview of control procedures . 21
1.6.1 List of procedures . 21
1.7 Applicability of implementations . 22
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 . 27
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 . 31
3.1.2.3 Group receive mode . 32
3.1.2.4 Group transmit mode. 32
3.1.2.5 Packet idle mode . 32
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
3.3.1.1.2 Initiation of the immediate assignment procedure . 44
ETSI

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3GPP TS 44.018 version 15.4.0 Release 15 4 ETSI TS 144 018 V15.4.0 (2019-04)
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 . 49
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 . 51
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 . 53
3.3.1.2.1.2c.3 Using the RACH . 53
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 . 54
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 . 55
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 . 56
3.3.1.2.2c.1 General . 56
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 . 57
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 . 59
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
3.3.3.2.2 Segmentation of notifications . 62
ETSI

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3GPP TS 44.018 version 15.4.0 Release 15 5 ETSI TS 144 018 V15.4.0 (2019-04)
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 . 63
3.3.3.3 Reduced NCH monitoring mechanism. 64
3.3.3.4 Notification response procedure . 65
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 . 67
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) . 71
3.4.1.2.1.3 Deriving the Neighbour Cell list from the GSM Neighbour Cell list and the 3G Neighbour
Cell list . 71
3.4.1.2.1.4 Real Time Differences . 71
3.4.1.2.1.5 Report Priority Description . 72
3.4.1.2.1.6 GPRS Parameters . 72
3.4.1.2.1.7 The 3G Cell Reselection list . 72
3.4.1.2.1.7a (void). 72
3.4.1.2.1.7b Closed Subscriber Group Information . 72
3.4.1.2.1.7c The 3G Frequency list . 73
3.4.1.2.1.8 CCN Support description . 73
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 . 74
3.4.1.2.1.12 Reporting of CSG Cells and Hybrid Cells . 75
3.4.1.3 Extended measurement report $(MAFA)$ . 76
3.4.2 Transfer of messages and link layer service provision . 76
3.4.3 Channel assignment procedure . 76
3.4.3.1 Channel assignment initiation . 77
3.4.3.2 Assignment completion . 78
3.4.3.3 Abnormal cases . 79
3.4.4 Handover procedure . 80
3.4.4.1 Handover initiation. 80
3.4.4.2 Physical channel establishment . 83
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 . 85
3.4.4.4 Abnormal cases . 86
3.4.4a Handover to UTRAN procedure . 87
3.4.4a.1 Handover to UTRAN initiation . 87
3.4.4a.2 Handover to UTRAN completion . 87
3.4.4a.3 Abnormal cases . 88
3.4.4b Handover to CDMA2000 procedure .
...