SIST EN 300 940 V5.15.1:2005

• Abstract:

  CR TSG#7

• 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 V5.15.1 (2000-10) - Digital cellular telecommunications system (Phase 2+) (GSM); Mobile radio interface; Layer 3 specification (GSM 04.08 version 5.15.1 Release 1996)

SIST EN 300 940 V5.15.1:2005 is the Slovenian adoption of ETSI EN 300 940 Version 5.15.1. It specifies Layer 3 signalling on the GSM mobile radio interface for Digital cellular telecommunications system (Phase 2+), covering Radio Resource management, Mobility Management, and circuit-switched Call Control for GSM network and mobile station implementers.

What does SIST EN 300 940 V5.15.1:2005 specify?

SIST EN 300 940 V5.15.1:2005 specifies the GSM mobile radio interface Layer 3 specification, with the title identifying it as GSM 04.08 version 5.15.1 Release 1996. The document is identical to EN 300 940 Version 5.15.1.

Clause 0 sets the scope, application to interface structures, the structure of Layer 3 procedures, test procedures, the use of logical channels, an overview of control procedures, and the applicability of implementations. Clauses 1 to 11 cover references, definitions, Radio Resource management, Mobility Management, circuit-switched Call Control, packet services, structured procedure examples, error handling, message definitions and coding, and system parameters.

Annex	What it covers
B	Compatibility checking for CM SERVICE REQUEST and SETUP, plus called-side and high layer compatibility checking
C	Principles for placing information types and the relationship between bearer capability and low layer compatibility
D	Coding examples for speech, modem access, and group 3 facsimile
G	Cause groups related to MS identification, subscription options, PLMN-specific failures, congestion, request nature, and invalid messages
H	Cause classes and named cause values for call clearing and protocol handling
J	An encoding and decoding algorithm, including a detailed example
K	Lists of common, Radio Resource management, Mobility Management, and Call Control information elements

What are the key requirements of SIST EN 300 940 V5.15.1:2005?

SIST EN 300 940 V5.15.1:2005 defines how a GSM mobile station and network exchange Layer 3 signalling across radio resource, mobility, and call control procedures. In practice, it tells implementers what states, messages, information elements, and error reactions the interface has to support.

Radio Resource management procedures

Clause 3 defines Radio Resource management procedures for idle mode, dedicated mode, group receive mode, and group transmit mode. This matters because it is the control logic for getting onto the radio channel, staying connected, changing channels, and releasing resources.

Clause 3.2 covers idle mode behavior on both the mobile station side and the network side, including system information broadcasting and paging. For an implementation, this is the basis for cell selection, paging response, and network reachability.

Clause 3.3 covers RR connection establishment, including immediate assignment for dedicated mode and uplink access for group transmit mode. Clause 3.3 also includes paging and notification procedures, which are the signalling steps used when the network wants to reach a mobile station or alert it to a call or group call.

Clause 3.4 covers procedures in dedicated mode and group transmit mode, including SACCH procedures, measurement reporting, channel assignment, handover, frequency redefinition, channel mode modify, ciphering mode setting, additional channel assignment, partial channel release, classmark change and interrogation, configuration change, and RR connection release. For the reader, this is the core of ongoing radio connection control, including how the network changes the channel, asks for measurements, and manages link failures.

Clause 3.4.15 covers group receive mode procedures for the mobile station and the network, including reception of VGCS or VBS channels, downlink monitoring, uplink reply, leaving group receive mode, and failure cases. This is the part that supports group and broadcast call behavior on the radio interface.

Mobility Management procedures

Clause 4 defines Mobility Management states and procedures. It covers MM IDLE state behavior, service state selection after power on, and the detailed service states used by the mobile station, which makes the document useful for handset behavior and registration logic.

Clause 4.3 covers MM common procedures such as TMSI reallocation, authentication, identification, IMSI detach, abort, and MM information. These procedures are what the network uses to verify a subscriber, update identity information, and keep the MM state aligned between mobile station and network.

Clause 4.4 covers MM specific procedures including location updating, periodic updating, IMSI attach, and generic location updating. In practice, these procedures control how the mobile station registers in a location area, how the network accepts or rejects that registration, and when RR connection release follows a successful update.

Clause 4.5 covers MM connection establishment, information transfer, and release. This is the signalling bridge between mobility control and call control, including emergency calls, call re-establishment, and the release of the associated RR connection.

Circuit-switched Call Control procedures

Clause 5 defines circuit-switched Call Control states and procedures. It covers both mobile originating and mobile terminating call establishment, so it is the call setup and call handling part of the standard.

Clause 5.3 covers signalling during the active state, including user notification, call rearrangements, Dual Services, and user initiated service level up- and downgrading. For operators and equipment makers, this is the part that governs in-call changes such as modifications of service level or call mode.

Clause 5.4 covers call clearing initiated by the mobile station or the network, plus clear collision. Clause 5.5 adds in-band tones and announcements, status procedures, call re-establishment, and DTMF protocol control. This is the practical signaling needed for call release, recovery after failure, and keypad tone control.

Clause 5.2.3 defines network initiated mobile originating call behavior for CCBS, including the CC-Establishment present and recall present states. That section is important where the network triggers a return call flow rather than the mobile station starting the call.

Structured examples, error handling, and message definitions

Clause 7 provides structured procedure examples such as paging request, immediate assignment, service request and contention resolution, authentication, ciphering mode setting, transaction phase, channel release, handover, in-call modification, call re-establishment, and network initiated mobile originating call (CCBS). These examples help implementers and test labs check the order of messages in realistic signalling flows.

Clause 8 defines how to handle unknown, unforeseen, and erroneous protocol data, including too-short messages, unknown transaction identifiers, unknown message types, mandatory information element errors, non-imperative message part errors, and semantically incorrect contents. In practice, this section is what software uses to reject malformed signalling cleanly and consistently.

Clauses 9, 10, and 11 define message functions, general message format, information element coding, and system parameters such as timers and counters. These clauses are what turn the procedures into actual protocol fields, encodings, and timeouts.

What terms does SIST EN 300 940 V5.15.1:2005 define?

• Global System for Mobile communications (GSM) - The GSM system named in the title, which is the radio and signalling environment for the procedures in this document.
• Radio Resource management (RR) - The Layer 3 part that handles access, paging, channel assignment, handover, measurement reporting, and RR connection release.
• Mobility Management (MM) - The Layer 3 part that controls location updating, authentication, identification, IMSI detach/attach, and MM connection handling.
• circuit-switched Call Control (CC) - The Layer 3 part that manages call setup, alerting, connect, disconnect, release, and in-call signalling.
• VGCS/VBS - The group-call and broadcast-call modes used in the group receive and group transmit procedures.
• CCBS - The network initiated mobile originating call procedure described in clause 5.2.3, with dedicated state flow for call establishment and recall.
• MAFA - The label used for the extended measurement report and extended measurement order procedures.

Who uses SIST EN 300 940 V5.15.1:2005?

SIST EN 300 940 V5.15.1:2005 is used by GSM network engineers, mobile station and chipset developers, signalling software teams, conformance and interoperability test labs, and quality managers who need to check Layer 3 behavior. It is also relevant to buyers and technical evaluators of GSM equipment because it describes the protocol functions that the equipment has to support on the mobile radio interface.

In practice, these users apply it to design call setup and release logic, implement mobility and paging behaviour, code protocol messages and information elements, and verify handling of abnormal or malformed signalling.

What does the SIST EN 300 940 V5.15.1:2005 document contain?

The document contains procedure descriptions, state behavior, message content definitions, information element coding rules, timers, and cause handling for the GSM Layer 3 interface. It is structured so that implementers can follow the signalling flow for RR, MM, and CC from idle and access procedures through call establishment, active-state signalling, and release.

Clause 7 adds structured examples that show typical message sequences, while clause 8 defines error handling behavior for malformed or unexpected protocol data. Clauses 9 and 10 provide the detailed message and information element definitions used to build protocol messages, and clause 11 lists the system parameters that control timing and retries.

Annex B gives compatibility checking guidance, Annex C explains how information types are placed and related, Annex D provides coding examples, Annex G and Annex H group cause values, Annex J gives an encoding and decoding algorithm with a worked example, and Annex K lists information elements by area.

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 5.15.1 Release 1996)
Ta slovenski standard je istoveten z: EN 300 940 Version 5.15.1
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 5.15.1 Release 1996)
R
GLOBAL SYSTEM FOR
MOBILE COMMUNICATIONS
(GSM 04.08 version 5.15.1 Release 1996) 2 ETSI EN 300 940 V5.15.1 (2000-10)
Reference
REN/TSGN-010408QR11
Keywords
Digital cellular telecommunications system,
Global System for Mobile communications (GSM)
ETSI
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All rights reserved.
ETSI
(GSM 04.08 version 5.15.1 Release 1996) 3 ETSI EN 300 940 V5.15.1 (2000-10)
Contents
Intellectual Property Rights.20
Foreword.20
Introduction .21
0 Scope .22
0.1 Scope of the Technical Specification .22
0.2 Application to the interface structures.22
0.3 Structure of layer 3 procedures.22
0.4 Test procedures .22
0.5 Use of logical channels.22
0.6 Overview of control procedures .23
0.6.1 List of procedures .23
0.7 Applicability of implementations .25
1 References .25
2 Definitions and abbreviations.29
2.1 Random values .29
2.2 Vocabulary .29
3 Radio Resource management procedures.30
3.1 Overview/General .30
3.1.1 General.30
3.1.2 Services provided to upper layers .30
3.1.2.1 Idle mode .30
3.1.2.2 Dedicated mode.30
3.1.2.3 Group receive mode .31
3.1.2.4 Group transmit mode.31
3.1.3 Services required from data link and physical layers.31
3.1.4 Change of dedicated channels.31
3.1.4.1 Change of dedicated channels using SAPI = 0.31
3.1.4.2 Change of dedicated channels using other SAPIs than 0 .32
3.1.4.3 Sequenced message transfer operation.32
3.1.4.3.1 Variables and sequence numbers.32
3.1.4.3.2 Procedures for the initiation, transfer execution and termination of the sequenced message
transfer operation.32
3.1.5 Procedure for Service Request and Contention Resolution .33
3.2 Idle mode procedures .33
3.2.1 Mobile Station side .33
3.2.2 Network side.34
3.2.2.1 System information broadcasting.34
3.2.2.2 Paging .35
3.3 RR connection establishment .35
3.3.1 RR connection establishment initiated by the mobile station .35
3.3.1.1 Entering the dedicated mode : immediate assignment procedure .35
3.3.1.1.1 Permission to access the network .35
3.3.1.1.2 Initiation of the immediate assignment procedure.35
3.3.1.1.3 Answer from the network.36
3.3.1.1.4 Assignment completion .38
3.3.1.1.5 Abnormal cases .38
3.3.1.2 Entering the group transmit mode: uplink access procedure.39
3.3.1.2.1 Mobile station side .39
3.3.1.2.2 Network side.40
3.3.1.2.3 Abnormal cases .40
3.3.2 Paging procedure .40
3.3.2.1 Paging initiation by the network .40
3.3.2.2 Paging response.41
ETSI
(GSM 04.08 version 5.15.1 Release 1996) 4 ETSI EN 300 940 V5.15.1 (2000-10)
3.3.2.3 Abnormal cases .41
3.3.3 Notification procedure .42
3.3.3.1 Notification of a call.42
3.3.3.2 Joining a VGCS or VBS call.42
3.3.3.3 Reduced NCH monitoring mechanism.43
3.4 Procedures in dedicated mode and in group transmit mode .44
3.4.1 SACCH procedures.44
3.4.1.1 General.44
3.4.1.2 Measurement report .45
3.4.1.3 Extended measurement report $(MAFA)$.45
3.4.2 Transfer of messages and link layer service provision .45
3.4.3 Channel assignment procedure .45
3.4.3.1 Channel assignment initiation .46
3.4.3.2 Assignment completion.47
3.4.3.3 Abnormal cases .47
3.4.4 Handover procedure.48
3.4.4.1 Handover initiation.49
3.4.4.2 Physical channel establishment.50
3.4.4.2.1 Finely synchronized cell case .50
3.4.4.2.2 Non synchronized cell case .50
3.4.4.2.3 Pseudo-synchronized cell case .51
3.4.4.2.4 Pre-synchronized cell case.51
3.4.4.3 Handover completion.51
3.4.4.4 Abnormal cases .52
3.4.5 Frequency redefinition procedure .53
3.4.5.1 Abnormal cases .53
3.4.6 Channel mode modify procedure.53
3.4.6.1 Normal channel mode modify procedure.53
3.4.6.1.1 Initiation of the channel mode modify procedure.53
3.4.6.1.2 Completion of channel mode modify procedure .54
3.4.6.1.3 Abnormal cases .54
3.4.6.2 Channel mode modify procedure for a voice group call talker .54
3.4.6.2.1 Initiation of the channel mode modify procedure.54
3.4.6.2.2 Completion of mode change procedure.54
3.4.6.2.3 Abnormal cases .54
3.4.7 Ciphering mode setting procedure .55
3.4.7.1 Ciphering mode setting initiation.55
3.4.7.2 Ciphering mode setting completion .55
3.4.8 Additional channel assignment procedure .56
3.4.8.1 Additional assignment procedure initiation .56
3.4.8.2 Additional assignment procedure completion.56
3.4.8.3 Abnormal cases .56
3.4.9 Partial channel release procedure.56
3.4.9.1 Partial release procedure initiation.56
3.4.9.2 Abnormal cases .57
3.4.10 Classmark change procedure .57
3.4.11 Classmark interrogation procedure .57
3.4.11.1 Classmark interrogation initiation.57
3.4.11.2 Classmark interrogation completion .57
3.4.12 Indication of notifications and paging informations .57
3.4.13 RR connection release procedure.58
3.4.13.1 Normal release procedure .58
3.4.13.1.1 Channel release procedure initiation in dedicated mode and in group transmit mode .58
3.4.13.1.2 Abnormal cases .59
3.4.13.2 Radio link failure in dedicated mode .59
3.4.13.2.1 Mobile side.59
3.4.13.2.2 Network side.59
3.4.13.3 RR connection abortion in dedicated mode .59
3.4.13.4 Uplink release procedure in group transmit mode .60
3.4.13.5 Radio link failure in group transmit mode .60
3.4.13.5.1 Mobile side.60
3.4.13.5.2 Network side.60
ETSI
(GSM 04.08 version 5.15.1 Release 1996) 5 ETSI EN 300 940 V5.15.1 (2000-10)
3.4.14 Receiving a RR STATUS message by a RR entity.60
3.4.15 Group receive mode procedures .61
3.4.15.1 Mobile station side .61
3.4.15.1.1 Reception of the VGCS or VBS channel.61
3.4.15.1.2 Monitoring of downlink messages and related procedures.61
3.4.15.1.3 Uplink reply procedure.62
3.4.15.1.4 Leaving the group receive mode .62
3.4.15.2 Network side .63
3.4.15.2.1 Provision of messages on the VGCS or VBS channel downlink.63
3.4.15.2.2 Release of the VGCS or VBS Channels .64
3.4.15.3 Failure cases.64
3.4.16 Configuration change procedure.64
3.4.16.1 Configuration change initiation.64
3.4.16.2 Configuration change completion .65
3.4.16.3 Abnormal cases .65
3.4.17 Mapping of user data substreams onto timeslots in a multislot configuration.65
3.4.18 Handling of classmark information at band change.65
4 Elementary procedures for Mobility Management.66
4.1 General .66
4.1.1 Type of MM procedures .66
4.1.2 MM sublayer states.67
4.1.2.1 MM sublayer states in the mobile station.67
4.1.2.1.1 Main states.67
4.1.2.1.2 Substates of the MM IDLE state .70
4.1.2.2 The update Status .71
4.1.2.3 MM sublayer states on the network side.72
4.2 Behaviour in MM IDLE State .73
4.2.1 Primary Service State selection .73
4.2.1.1 Selection of the Service State after Power On.73
4.2.1.2 Other Cases .74
4.2.2 Detailed Description of the MS behaviour in MM IDLE State. .74
4.2.2.1 Service State, NORMAL SERVICE.74
4.2.2.2 Service State, ATTEMPTING TO UPDATE .75
4.2.2.3 Service State, LIMITED SERVICE.75
4.2.2.4 Service State, NO IMSI.76
4.2.2.5 Service State, SEARCH FOR PLMN, NORMAL SERVICE.76
4.2.2.6 Service State, SEARCH FOR PLMN .76
4.2.2.7 Service State, RECEIVING GROUP CALL (NORMAL SERVICE) .77
4.2.2.8 Service State, RECEIVING GROUP CALL (LIMITED SERVICE) .77
4.2.3 Service state when back to state MM IDLE from another state.78
4.3 MM common procedures .78
4.3.1 TMSI reallocation procedure .78
4.3.1.1 TMSI reallocation initiation by the network .79
4.3.1.2 TMSI reallocation completion by the mobile station .79
4.3.1.3 TMSI reallocation completion in the network.79
4.3.1.4 Abnormal cases .79
4.3.2 Authentication procedure.80
4.3.2.1 Authentication request by the network.80
4.3.2.2 Authentication response by the mobile station.80
4.3.2.3 Authentication processing in the network.80
4.3.2.4 Ciphering key sequence number .80
4.3.2.5 Unsuccessful authentication.81
4.3.2.6 Abnormal cases .81
4.3.3 Identification procedure.82
4.3.3.1 Identity request by the network.82
4.3.3.2 Identification response by the mobile station.82
4.3.3.3 Abnormal cases .82
4.3.4 IMSI detach procedure.83
4.3.4.1 IMSI detach initiation by the mobile station .83
4.3.4.2 IMSI detach procedure in the network.83
4.3.4.3 IMSI detach completion by the mobile station.83
ETSI
(GSM 04.08 version 5.15.1 Release 1996) 6 ETSI EN 300 940 V5.15.1 (2000-10)
4.3.4.4 Abnormal cases .83
4.3.5 Abort procedure.83
4.3.5.1 Abort procedure initiation by the network .84
4.3.5.2 Abort procedure in the mobile station.84
4.3.6 MM information procedure.84
4.3.6.1 MM information procedure initiation by the network.84
4.3.6.2 MM information procedure in the mobile station .84
4.4 MM specific procedures.84
4.4.1 Location updating procedure .85
4.4.2 Periodic updating.85
4.4.3 IMSI attach procedure .86
4.4.4 Generic Location Updating procedure.86
4.4.4.1 Location updating initiation by the mobile station.86
4.4.4.1a Network Request for Additional mobile station Capability Information .87
4.4.4.2 Identification request from the network .87
4.4.4.3 Authentication by the network .87
4.4.4.4 Ciphering mode setting by the network .87
4.4.4.5 Attempt Counter.87
4.4.4.6 Location updating accepted by the network.87
4.4.4.7 Location updating not accepted by the network.88
4.4.4.8 Release of RR connection after location updating .89
4.4.4.9 Abnormal cases on the mobile station side .89
4.4.4.10 Abnormal cases on the network side.90
4.5 Connection management sublayer service provision .91
4.5.1 MM connection establishment.91
4.5.1.1 MM connection establishment initiated by the mobile station.91
4.5.1.2 Abnormal cases .93
4.5.1.3 MM connection establishment initiated by the network .94
4.5.1.3.1 Mobile Terminating CM Activity.94
4.5.1.3.2 Mobile Originating CM Activity $(CCBS)$ .95
4.5.1.4 Abnormal cases .96
4.5.1.5 MM connection establishment for emergency calls.96
4.5.1.6 Call re-establishment.96
4.5.1.6.1 Call re-establishment, initiation by the mobile station .97
4.5.1.6.2 Abnormal cases .98
4.5.1.7 Forced release during MO MM connection establishment .99
4.5.2 MM connection information transfer phase.99
4.5.2.1 Sending CM messages .99
4.5.2.2 Receiving CM messages .100
4.5.2.3 Abnormal cases .100
4.5.3 MM connection release.100
4.5.3.1 Release of associated RR connection.100
4.5.3.2 Uplink release in a voice group call .100
4.6 Receiving a MM STATUS message by a MM entity.100
5 Elementary procedures for circuit-switched Call Control.101
5.1 Overview .101
5.1.1 General.101
5.1.2 Call Control States.106
5.1.2.1 Call states at the mobile station side of the interface .106
5.1.2.1.1 Null (State U0) .106
5.1.2.1.2 MM Connection pending (U0.1) .106
5.1.2.1.2a CC prompt present (U0.2) $(CCBS)$ .106
5.1.2.1.2b Wait for network information (U0.3) $(CCBS)$.106
5.1.2.1.2c CC-Establishmentpresent (U0.4) $(CCBS)$ .106
5.1.2.1.2d CC-Establishment confirmed (U0.5) $(CCBS)$ .106
5.1.2.1.2e Recall present (U0.6) $(CCBS)$ .106
5.1.2.1.3 Call initiated (U1).106
5.1.2.1.4 Mobile originating call proceeding (U3) .106
5.1.2.1.5 Call delivered (U4).107
5.1.2.1.6 Call present (U6) .107
5.1.2.1.7 Call received (U7) .107
ETSI
(GSM 04.08 version 5.15.1 Release 1996) 7 ETSI EN 300 940 V5.15.1 (2000-10)
5.1.2.1.8 Connect Request (U8) .107
5.1.2.1.9 Mobile terminating call confirmed (U9).107
5.1.2.1.10 Active (U10).107
5.1.2.1.11 Disconnect request (U11) .107
5.1.2.1.12 Disconnect indication (U12).107
5.1.2.1.13 Release request (U19).107
5.1.2.1.14 Mobile originating modify (U26).107
5.1.2.1.15 Mobile terminating modify (U27) .107
5.1.2.2 Network call states .107
5.1.2.2.1 Null (State N0) .108
5.1.2.2.2 MM connection pending (N0.1) .108
5.1.2.2.2a CC connection pending (N0.2) $(CCBS)$ .108
5.1.2.2.2b Network answer pending (N0.3) $(CCBS)$.108
5.1.2.2.2c CC-Establishment present (N0.4) $(CCBS)$ .108
5.1.2.2.2d CC-Establishment confirmed (N0.5) $(CCBS)$ .108
5.1.2.2.2e Recall present (N0.6) $(CCBS)$ .108
5.1.2.2.3 Call initiated (N1).108
5.1.2.2.4 Mobile originating call proceeding (N3) .108
5.1.2.2.5 Call delivered (N4).108
5.1.2.2.6 Call present (N6) .108
5.1.2.2.7 Call received (N7) .108
5.1.2.2.8 Connect request (N8).109
5.1.2.2.9 Mobile terminating call confirmed (N9).109
5.1.2.2.10 Active (N10).109
5.1.2.2.11 {Not used}.109
5.1.2.2.12 Disconnect indication (N12).109
5.1.2.2.13 Release request (N19).109
5.1.2.2.14 Mobile originating modify (N26).109
5.1.2.2.15 Mobile terminating modify (N27) .109
5.1.2.2.16 Connect Indication (N28) .109
5.2 Call establishment procedures.109
5.2.1 Mobile originating call establishment.110
5.2.1.1 Call initiation.110
5.2.1.2 Receipt of a setup message .111
5.2.1.3 Receipt of a CALL PROCEEDING message .112
5.2.1.4 Notification of progressing mobile originated call.112
5.2.1.4.1 Notification of interworking in connection with mobile originated call establishment.112
5.2.1.4.2 Call progress in the PLMN/ISDN environment .113
5.2.1.5 Alerting .113
5.2.1.6 Call connected.113
5.2.1.7 Call rejection.114
5.2.1.8 Transit network selection .
...