SIST EN 300 940 V6.7.1:2005

• Abstract:

  SUBJECT CC procedures for CCBS recall Messages and IEs for CCBS MM procedures for CCBS recall Structured procedures for CCBS recall Section 8 procedures for CCBS recall Call Control timers for CCBS recall Indication of CCBS possible GPRS, RR sub-layer Inclusion of GPRS session and mobility management New call state values Network controlled allocation of GPRS resource Version 6.2.0: SUBJECT Deletion of the STANDBY timer Addition of downlink single block assignment for GPRS Correction of packet downlink assignment procedure Radio priority level signalling for MO SMS Classmark split Scheduling of SI-13 MS initiated detach procedure collision handling Definition of IEI values for optional information elements Clarification of the Classmark 3 IE Various corrections to GSM 04.08 SAPI negotiation at AA PDP context activation Addition of Network Operation mode in SI 13 Clarification of the GMM cause code handling Deletion of Mac Mode in SI 13 Modification of PDP address IE coding Allows Fixed or Dynamic Access mode in one phase packet access mode for Uplink TBF Clarifications in the negotiation of the READY Timer value Pb parameter defined in SI 13 used only on PCCH misplaced

• Status: Published
• Publication Date: 31-Jan-2005
• ICS: 33.070.01 - Mobile services in general
• Technical Committee: RES - Radio equipment and systems
• Current Stage: 6060 - National Implementation/Publication (Adopted Project)
• Start Date: 01-Feb-2005
• Due Date: 01-Feb-2005
• Completion Date: 01-Feb-2005
• Ref Project: ETSI EN 300 940 V6.7.1 (2000-06) - Digital cellular telecommunications system (Phase 2+) (GSM); Mobile radio interface layer 3 specification (GSM 04.08 version 6.7.1 Release 1997)

Overview

SIST EN 300 940 V6.7.1:2005 specifies the layer 3 protocols and procedures for the mobile radio interface in the digital cellular telecommunications system (GSM Phase 2+). This standard, aligned with GSM 04.08 version 6.7.1 Release 1997, is essential for defining how mobile stations and networks interact at the radio level, ensuring seamless connectivity and interoperability in GSM and GPRS services. It is identical to EN 300 940 Version 6.7.1 and applies to both circuit-switched and packet-switched (GPRS) domains to support robust mobile service operations.

Key Topics

• Call Control and CCBS Recall
  The standard covers procedures and message elements (IEs) for Call Completion to Busy Subscriber (CCBS) recall, including timers and clear process structuring.

• Mobility Management (MM) and Session Management
  In-depth procedures for mobility and session management ensure reliable handovers, registration, and context handling for both GSM and GPRS users.

• Radio Resource (RR) Management
  Procedures for managing radio resources cover connection establishment, maintenance, release, handover, and paging at the mobile-radio interface.

• GPRS Enhancements
  Inclusion of GPRS-specific protocols such as session and mobility management (GMM), downlink single block assignments, revised timers, and network-controlled allocation of radio resources.

• Information Elements and Signaling
  Definitions for key information elements (IEs), classmark handling, and proper signaling for Mobile Originated (MO) SMS, prioritization, and error handling.

• System Information (SI) and Updates
  Scheduling, segmentation (e.g., SI-13), and classmark definitions are updated for compatibility with evolving mobile requirements.

Applications

SIST EN 300 940 V6.7.1:2005 is widely applied across the mobile telecommunications sector, including:

• Mobile Device Manufacturers
  Ensures device compliance with GSM and GPRS protocols for global interoperability.

• Network Equipment Vendors
  Guides implementation of base station and network-side features such as paging, handover, channel assignment, and resource optimization.

• Mobile Network Operators
  Facilitates service reliability and compatibility, particularly for evolving services like packet data (GPRS) and advanced call control features.

• Testing and Certification
  Acts as a benchmark for conformance testing and quality assurance of mobile devices and infrastructure.

• Software Developers
  Provides essential reference for implementing GSM and GPRS protocol stacks in embedded systems, modems, and mobile operating systems.

Related Standards

To ensure broad compatibility and up-to-date mobile services, consider these related international standards:

• GSM 04.08 (EN 300 940 family)
  The foundational specification for mobile radio interface layer 3 in GSM systems.

• GSM 04.18
  Protocols for Radio Resource (RR) management.

• GSM 04.60
  General Packet Radio Service (GPRS) - Mobile Station - Base Station System interface.

• 3GPP TS 24.008
  Successor standard, detailing similar protocols for later GSM and UMTS releases.

• SIST ISO/IEC 10733
  Reference for mobile telecommunications protocols and signaling.

Practical Value

By implementing the procedures and signaling requirements of SIST EN 300 940 V6.7.1:2005, stakeholders ensure:

• Interoperability between different mobile devices and networks.
• Reliable handover and call management even under busy conditions.
• Seamless integration of packet-based services such as GPRS.
• Consistent user experience across various network infrastructure providers.

This standard remains a cornerstone for GSM and early-generation mobile communications infrastructure, supporting ongoing telecommunications reliability and innovation.

SLOVENSKI STANDARD
01-februar-2005
'LJLWDOQLFHOLþQLWHOHNRPXQLNDFLMVNLVLVWHPID]D9PHVQLN]DPRELOQLUDGLR
6SHFLILNDFLMDWUHWMHSODVWL*60UD]OLþLFDL]GDMD
Digital cellular telecommunications system (Phase 2+) (GSM); Mobile radio interface
layer 3 specification (GSM 04.08 version 6.7.1 Release 1997)
Ta slovenski standard je istoveten z: EN 300 940 Version 6.7.1
ICS:
33.070.01 Mobilni servisi na splošno Mobile services in general
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

European Standard (Telecommunications series)
Digital cellular telecommunications system (Phase 2+);
Mobile radio interface layer 3 specification
(GSM 04.08 version 6.7.1 Release 1997)
R
GLOBAL SYSTEM FOR
MOBILE COMMUNICATIONS
(GSM 04.08 version 6.7.1 Release 1997) 2 ETSI EN 300 940 V6.7.1 (2000-06)
Reference
REN/SMG-030408Q6R3
Keywords
Digital cellular telecommunications system,
Global System for Mobile communications (GSM)
ETSI
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© European Telecommunications Standards Institute 2000.
All rights reserved.
ETSI
(GSM 04.08 version 6.7.1 Release 1997) 3 ETSI EN 300 940 V6.7.1 (2000-06)
Contents
Intellectual Property Rights.28
Foreword .28
Introduction .28
0 Scope.30
0.1 Scope of the Technical Specification .30
0.2 Application to the interface structures.30
0.3 Structure of layer 3 procedures.30
0.4 Test procedures .30
0.5 Use of logical channels.30
0.6 Overview of control procedures .31
0.6.1 List of procedures .31
0.7 Applicability of implementations .33
0.7.1 Voice Group Call Service (VGCS) and Voice Broadcast Service (VBS) .33
0.7.2 General Packet Radio Service (GPRS) .34
1 References.34
2 Definitions and abbreviations .38
2.1 Random values .38
2.2 Vocabulary .38
3 Radio Resource management procedures .40
3.1 Overview/General.40
3.1.1 General.40
3.1.2 Services provided to upper layers.40
3.1.2.1 Idle mode .40
3.1.2.2 Dedicated mode.40
3.1.2.3 Group receive mode .41
3.1.2.4 Group transmit mode.41
3.1.2.5 Packet idle mode .41
3.1.2.6 Packet transfer mode .41
3.1.3 Services required from data link and physical layers.42
3.1.4 Change of dedicated channels.42
3.1.4.1 Change of dedicated channels using SAPI = 0.42
3.1.4.2 Change of dedicated channels using other SAPIs than 0.42
3.1.4.3 Sequenced message transfer operation.42
3.1.4.3.1 Variables and sequence numbers.43
3.1.4.3.1.1 Send state variable V(SD).43
3.1.4.3.1.2 Send sequence number N(SD) .43
3.1.4.3.2 Procedures for the initiation, transfer execution and termination of the sequenced message
transfer operation.43
3.1.4.3.2.1 Initiation.43
3.1.4.3.2.2 Transfer Execution.43
3.1.4.3.2.3 Termination.43
3.1.5 Procedure for Service Request and Contention Resolution .43
3.2 Idle mode procedures and general procedures in packet idle and packet transfer modes.44
3.2.1 Mobile Station side.44
3.2.2 Network side.44
3.2.2.1 System information broadcasting .44
3.2.2.2 Paging .46
3.3 RR connection establishment .46
3.3.1 RR connection establishment initiated by the mobile station.46
3.3.1.1 Entering the dedicated mode : immediate assignment procedure.46
3.3.1.1.1 Permission to access the network .46
3.3.1.1.2 Initiation of the immediate assignment procedure .46
ETSI
(GSM 04.08 version 6.7.1 Release 1997) 4 ETSI EN 300 940 V6.7.1 (2000-06)
3.3.1.1.3 Answer from the network .47
3.3.1.1.3.1 On receipt of a CHANNEL REQUEST message.47
3.3.1.1.3.2 Assignment rejection.48
3.3.1.1.4 Assignment completion .49
3.3.1.1.4.1 Early classmark sending.49
3.3.1.1.4.2 GPRS suspension procedure .49
3.3.1.1.5 Abnormal cases.49
3.3.1.2 Entering the group transmit mode: uplink access procedure .50
3.3.1.2.1 Mobile station side .50
3.3.1.2.1.1 Uplink investigation procedure.50
3.3.1.2.1.2 Uplink access procedure .50
3.3.1.2.2 Network side.51
3.3.1.2.3 Abnormal cases.51
3.3.1.3 Dedicated mode and GPRS.51
3.3.2 Paging procedure for RR connection establishment .52
3.3.2.1 Paging initiation by the network.52
3.3.2.1.1 Paging initiation using paging subchannel on CCCH .52
3.3.2.1.2 Paging initiation using paging subchannel on PCCCH.53
3.3.2.1.3 Paging initiation using PACCH.54
3.3.2.2 Paging response.54
3.3.2.3 Abnormal cases .54
3.3.3 Notification procedure .54
3.3.3.1 Notification of a call.54
3.3.3.2 Joining a VGCS or VBS call.55
3.3.3.3 Reduced NCH monitoring mechanism.55
3.4 Procedures in dedicated mode and in group transmit mode .56
3.4.1 SACCH procedures.56
3.4.1.1 General.56
3.4.1.2 Measurement report .57
3.4.1.3 Extended measurement report $(MAFA)$ .57
3.4.2 Transfer of messages and link layer service provision.58
3.4.3 Channel assignment procedure .58
3.4.3.1 Channel assignment initiation .58
3.4.3.2 Assignment completion.59
3.4.3.3 Abnormal cases .60
3.4.4 Handover procedure.60
3.4.4.1 Handover initiation.61
3.4.4.2 Physical channel establishment .62
3.4.4.2.1 Finely synchronized cell case .62
3.4.4.2.2 Non synchronized cell case .62
3.4.4.2.3 Pseudo-synchronized cell case.63
3.4.4.2.4 Pre-synchronized cell case.63
3.4.4.3 Handover completion.64
3.4.4.4 Abnormal cases .64
3.4.5 Frequency redefinition procedure .65
3.4.5.1 Abnormal cases .65
3.4.6 Channel mode modify procedure.65
3.4.6.1 Normal channel mode modify procedure .66
3.4.6.1.1 Initiation of the channel mode modify procedure .66
3.4.6.1.2 Completion of channel mode modify procedure.66
3.4.6.1.3 Abnormal cases.66
3.4.6.2 Channel mode modify procedure for a voice group call talker .66
3.4.6.2.1 Initiation of the channel mode modify procedure .66
3.4.6.2.2 Completion of mode change procedure .67
3.4.6.2.3 Abnormal cases.67
3.4.7 Ciphering mode setting procedure .67
3.4.7.1 Ciphering mode setting initiation .67
3.4.7.2 Ciphering mode setting completion.67
3.4.8 Additional channel assignment procedure .68
3.4.8.1 Additional assignment procedure initiation.68
ETSI
(GSM 04.08 version 6.7.1 Release 1997) 5 ETSI EN 300 940 V6.7.1 (2000-06)
3.4.8.2 Additional assignment procedure completion .68
3.4.8.3 Abnormal cases .68
3.4.9 Partial channel release procedure.68
3.4.9.1 Partial release procedure initiation.69
3.4.9.2 Abnormal cases .69
3.4.10 Classmark change procedure .69
3.4.11 Classmark interrogation procedure .69
3.4.11.1 Classmark interrogation initiation .69
3.4.11.2 Classmark interrogation completion.69
3.4.12 Indication of notifications and paging information.70
3.4.13 RR connection release procedure.70
3.4.13.1 Normal release procedure .70
3.4.13.1.1 Channel release procedure initiation in dedicated mode and in group transmit mode.70
3.4.13.1.2 Abnormal cases.71
3.4.13.2 Radio link failure in dedicated mode.71
3.4.13.2.1 Mobile side.72
3.4.13.2.2 Network side.72
3.4.13.3 RR connection abortion in dedicated mode.72
3.4.13.4 Uplink release procedure in group transmit mode.72
3.4.13.5 Radio link failure in group transmit mode.72
3.4.13.5.1 Mobile side.73
3.4.13.5.2 Network side.73
3.4.14 Receiving a RR STATUS message by a RR entity.73
3.4.15 Group receive mode procedures .73
3.4.15.1 Mobile station side .73
3.4.15.1.1 Reception of the VGCS or VBS channel.73
3.4.15.1.2 Monitoring of downlink messages and related procedures.74
3.4.15.1.2.1 Spare .74
3.4.15.1.2.2 Spare .74
3.4.15.1.2.3 Channel mode modify procedure .74
3.4.15.1.2.4 Notification and paging information .74
3.4.15.1.2.4.1 Use of Reduced NCH monitoring .74
3.4.15.1.2.5 Uplink status messages .75
3.4.15.1.2.6 Channel release message.75
3.4.15.1.2.7 Information on paging channel restructuring .75
3.4.15.1.3 Uplink reply procedure.75
3.4.15.1.4 Leaving the group receive mode.75
3.4.15.1.4.1 Returning to idle mode.75
3.4.15.1.4.2 Going to group transmit mode .75
3.4.15.2 Network side .76
3.4.15.2.1 Provision of messages on the VGCS or VBS channel downlink .76
3.4.15.2.1.1 General.76
3.4.15.2.1.2 Provision of general information messages.76
3.4.15.2.1.3 Provision of messages related to the voice group call uplink channel .76
3.4.15.2.2 Release of the VGCS or VBS Channels .77
3.4.15.3 Failure cases.77
3.4.16 Configuration change procedure.77
3.4.16.1 Configuration change initiation.77
3.4.16.2 Configuration change completion .77
3.4.16.3 Abnormal cases .77
3.4.17 Mapping of user data substreams onto timeslots in a multislot configuration.78
3.4.18 Handling of classmark information at band change .78
3.4.19 Assignment to a Packet Data channel .78
3.4.19.1 Assignment to PDCH initiation.79
3.4.19.2 Completion of the Assignment to PDCH procedure .80
3.4.19.3 Abnormal cases .80
3.4.20 RR-Network Commanded Cell Change Order.80
3.4.20.1 RR-network commanded cell change order initiation .81
3.4.20.2 Network controlled cell reselection completion.81
3.4.20.3 Abnormal cases .81
ETSI
(GSM 04.08 version 6.7.1 Release 1997) 6 ETSI EN 300 940 V6.7.1 (2000-06)
3.5 RR procedures on CCCH related to temporary block flow establishment.82
3.5.1 Packet paging procedure using CCCH.82
3.5.1.1 Packet paging initiation by the network .82
3.5.1.2 On receipt of a packet paging request .83
3.5.2 Packet access procedure using CCCH .83
3.5.2.1 Entering the packet transfer mode: packet access procedure .83
3.5.2.1.1 Permission to access the network .83
3.5.2.1.2 Initiation of the packet access procedure: channel request .83
3.5.2.1.3 Packet immediate assignment .84
3.5.2.1.3.1 On receipt of a CHANNEL REQUEST message.84
3.5.2.1.3.2 One phase packet access .85
3.5.2.1.3.3 Single block packet access.86
3.5.2.1.3.4 Packet access rejection.86
3.5.2.1.4 Packet access completion .86
3.5.2.1.5 Abnormal cases.87
3.5.2.2 Sending an RLC/MAC control message: single block packet access procedure.87
3.5.3 Packet downlink assignment procedure using CCCH.87
3.5.3.1 Entering the packet transfer mode: packet downlink assignment procedure .87
3.5.3.1.2 Initiation of the packet downlink assignment procedure.87
3.5.3.1.3 Packet downlink assignment completion .89
3.5.3.1.4 Abnormal cases.89
3.5.3.2 Sending an RLC/MAC control message: single block packet downlink assignment procedure.89
4 Elementary procedures for Mobility Management .90
4.1 General .90
4.1.1 MM and GMM procedures.90
4.1.1.1 Types of MM and GMM procedures .90
4.1.1.2 MM-GMM co-ordination for GPRS MS’s.92
4.1.1.2.1 GPRS MS operating in mode A or B in a network that operates in mode I.92
4.1.1.2.2 GPRS MS operating in mode A or B in a network that operates in mode II or III.92
4.1.2 MM sublayer states.92
4.1.2.1 MM sublayer states in the mobile station.93
4.1.2.1.1 Main states.93
4.1.2.1.2 Substates of the MM IDLE state.96
4.1.2.2 The update Status .97
4.1.2.3 MM sublayer states on the network side .98
4.1.3 GPRS mobility management (GMM) sublayer states .99
4.1.3.1 GMM states in the MS .99
4.1.3.1.1 Main states.99
4.1.3.1.1.1 GMM-NULL.99
4.1.3.1.1.2 GMM-DEREGISTERED .99
4.1.3.1.1.3 GMM-REGISTERED-INITIATED.99
4.1.3.1.1.4 GMM-REGISTERED.100
4.1.3.1.1.5 GMM-DEREGISTERED-INITIATED .100
4.1.3.1.1.6 GMM-ROUTING-AREA-UPDATING-INITIATED .100
4.1.3.1.2 Substates of state GMM-DEREGISTERED.100
4.1.3.1.2.1 GMM-DEREGISTERED.NORMAL-SERVICE.100
4.1.3.1.2.2 GMM-DEREGISTERED.LIMITED-SERVICE .100
4.1.3.1.2.3 GMM-DEREGISTERED.ATTACH-NEEDED .100
4.1.3.1.2.4 GMM-DEREGISTERED.ATTEMPTING-TO-ATTACH .100
4.1.3.1.2.5 GMM-DEREGISTERED.NO-IMSI .100
4.1.3.1.2.6 GMM-DEREGISTERED.NO-CELL-AVAILABLE.100
4.1.3.1.2.7 GMM-DEREGISTERED.PLMN-SEARCH.100
4.1.3.1.2.8 GMM-DEREGISTERED.SUSPENDED.101
4.1.3.1.3 Substates of state GMM-REGISTERED.101
4.1.3.1.3.1 GMM-REGISTERED.NORMAL-SERVICE.101
4.1.3.1.3.2 GMM-REGISTERED.SUSPENDED.101
4.1.3.1.3.3 GMM-REGISTERED.UPDATE-NEEDED.101
4.1.3.1.3.4 GMM-REGISTERED.ATTEMPTING-TO-UPDATE.101
4.1.3.1.3.5 GMM-REGISTERED.NO-CELL-AVAILABLE .101
4.1.3.1.3.6 GMM-REGISTERED.LIMITED-SERVICE.102
ETSI
(GSM 04.08 version 6.7.1 Release 1997) 7 ETSI EN 300 940 V6.7.1 (2000-06)
4.1.3.1.3.7 GMM-REGISTERED.ATTEMPTING-TO-UPDATE-MM .102
4.1.3.1.3.8 GMM-REGISTERED.IMSI-DETACH-INITIATED.102
4.1.3.2 GPRS update status.102
4.1.3.3 GMM mobility management states on the network side .103
4.1.3.3.1 Main States .103
4.1.3.3.1.1 GMM-DEREGISTERED .103
4.1.3.3.1.2 GMM-COMMON-PROCEDURE-INITIATED.103
4.1.3.3.1.3 GMM-REGISTERED.103
4.1.3.3.1.4 GMM-DEREGISTERED-INITIATED .103
4.1.3.3.2 Substates of state GMM-REGISTERED.104
4.1.3.3.2.1 GMM-REGISTERED.NORMAL-SERVICE.104
4.1.3.3.2.2 GMM-REGISTERED.SUSPENDED.104
4.2 Behaviour of the MS in MM Idle state, GMM-DEREGISTERED state and GMM-REGISTERED state.104
4.2.1 Primary Service State selection.105
4.2.1.1 Selection of the Service State after Power On.105
4.2.1.2 Other Cases .105
4.2.2 Detailed Description of the MS behaviour in MM IDLE State.106
4.2.2.1 Service State, NORMAL SERVICE .106
4.2.2.2 Service State, ATTEMPTING TO UPDATE .106
4.2.2.3 Service State, LIMITED SERVICE.107
4.2.2.4 Service State, NO IMSI.107
4.2.2.5 Service State, SEARCH FOR PLMN, NORMAL SERVICE.108
4.2.2.6 Service State, SEARCH FOR PLMN .108
4.2.2.7 Service State, RECEIVING GROUP CALL (NORMAL SERVICE).108
4.2.2.8 Service State, RECEIVING GROUP CALL (LIMITED SERVICE) .109
4.2.3 Service state when back to state MM IDLE from another state.109
4.2.4 Behaviour in state GMM-DEREGISTERED.110
4.2.4.1 Primary substate selection.110
4.2.4.1.1 Selection of the substate after power on or enabling the MS’s GPRS capability.110
4.2.4.1.2 Other Cases.111
4.2.4.2 Detailed description of the MS behaviour in state GMM-DEREGISTERED.111
4.2.4.2.1 Substate, NORMAL-SERVICE.111
4.2.4.2.2 Substate, ATTEMPTING-TO-ATTACH.111
4.2.4.2.3 Substate, LIMITED-SERVICE .111
4.2.4.2.4 Substate, NO-IMSI .111
4.2.4.2.5 Substate, NO-CELL.112
4.2.4.2.6 Substate, PLMN-SEARCH.112
4.2.4.2.7 Substate, ATTACH-NEEDED .112
4.2.4.2.8 Substate, SUSPENDED.112
4.2.4.3 Substate when back to state GMM-DEREGISTERED from another GMM state .112
4.2.5 Behaviour in state GMM-REGISTERED.112
4.2.5.1 Detailed description of the MS behaviour in state GMM-REGISTERED .113
4.2.5.1.1 Substate, NORMAL-SERVICE.113
4.2.5.1.2 Substate, SUSPENDED.113
4.2.5.1.3 Substate, UPDATE-NEEDED.113
4.2.5.1.4 Substate, ATTEMPTING-TO-UPDATE .113
4.2.5.1.5 Substate, NO-CELL-AVAILABLE.114
4.2.5.1.6 Substate, LIMITED-SERVICE .114
4.2.5.1.7 Substate, ATTEMPTING-TO-UPDATE-MM .114
4.3 MM common procedures .114
4.3.1 TMSI reallocation procedure.114
4.3.1.1 TMSI reallocation initiation by the network .115
4.3.1.2 TMSI reallocation completion by the mobile station .115
4.3.1.3 TMSI reallocation completion in the network.115
4.3.1.4 Abnormal cases .115
4.3.2 Authentication procedure.116
4.3.2.1 Authentication request by the network .
...