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TS 08.08 (RAN6)
Mobile-services Switching Centre - Base Station system (MSC-BSS) Interface Layer 3 Specification

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(P) GSM Rel-99 v8.15.0    2003/09    140 p.
(P) GSM Rel-98 v7.7.0    2000/10    134 p.
(P) GSM Rel-97 v6.5.0    2000/04    124 p.
(P) GSM Rel-96 v5.12.0    2000/04    129 p.
(P) GSM Phase-2 v4.12.1    1998/10    103 p.
(P) GSM Phase-1 v3.10.1    1992/02    94 p.


Rapporteur:  ANDERSEN, Niels Peter Skov
Descendant:  TS 08.08ext     TS 48.008    


This TS specifies the layer 3 procedures used on the Base Station System (BSS) to Mobile-services Switching Centre (MSC) interface for control of GSM services.

For the purposes of call control and mobility management, messages are not interpreted at the Base Station System (BSS) which acts as a relay function. These messages and procedures are documented in TS 04.08, the only relevant issues covering these messages in this TS are those concerned with error conditions at the interface, and the headers that are required for the correct addressing of the messages. This is specified in more detail in TS 08.06.

The functional split between MSC and BSS is defined in TS 08.02 and states that the BSS is responsible for local radio resource allocation and in order to support this the required procedures between BSS and MSC are defined in detail in this TS.

TS 08.02 also states that the BSS is responsible for the scheduling of all CCCH/BCCH messages and therefore some procedures for providing the BSS with the necessary information to be passed on these channels for individual calls (i.e. paging) are defined in this TS, but the scheduling is not discussed.

This interface and consequently these layer 3 procedures are designed to support BSSs providing one or more cells.


 

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1   Scope   PDF-p. 9
2   Application to interface structures
3   The BSS Management Application Part   PDF-p. 12
3.1   BSSMAP Procedures
3.1.1   Assignment   PDF-p. 13      Up
3.1.2   Blocking and Unblocking   PDF-p. 16
3.1.3   Resource Indication   PDF-p. 19
3.1.4   Reset   PDF-p. 20
3.1.5   External Handover
3.1.5a   Handover from GSM to another System
3.1.6   Internal Intra-Cell Handover Procedure   PDF-p. 32
3.1.7   Internal Inter-Cell Handover Procedure      Up
3.1.8   Handover Candidate Enquiry   PDF-p. 33
3.1.9   Release of Radio Resource And Terrestrial Resource   PDF-p. 34
3.1.10   Paging
3.1.11   Trace Invocation      Up
3.1.12   Flow Control   PDF-p. 36
3.1.13   Classmark Handling Procedures   PDF-p. 37
3.1.14   Cipher Mode Control
3.1.15   General SCCP Abnormal Conditions
3.1.16   Initial MS message
3.1.17   Queuing Indication   PDF-p. 39
3.1.18   Data Link Control SAPI not Equal to "0"
3.1.19   BSSMAP Error Handling
3.1.20   Load Indication Procedure      Up
3.1.21   Voice group call service and voice broadcast service call set-up and resource assignment
3.1.22   Voice group call service and voice broadcast service Assignment procedure   PDF-p. 46
3.1.23   Void
3.1.24   Voice group call uplink control procedure      Up
3.1.25   PDSS1 flow control   PDF-p. 48
3.1.26   Circuit re-selection procedure
3.1.27   LSA handling
3.1.28   Location Acquisition   PDF-p. 49
3.1.29   Connectionless Information Transfer procedure
3.1.30   Common ID
3.2   Message Formats and Coding
3.2.1   Message Contents   PDF-p. 53
3.2.1.1   ASSIGNMENT REQUEST
3.2.1.2   ASSIGNMENT COMPLETE   PDF-p. 54
3.2.1.3   ASSIGNMENT FAILURE
3.2.1.4   BLOCK   PDF-p. 55
3.2.1.5   BLOCKING ACKNOWLEDGE      Up
3.2.1.6   UNBLOCK
3.2.1.7   UNBLOCKING ACKNOWLEDGE
3.2.1.8   HANDOVER REQUEST   PDF-p. 56
3.2.1.9   HANDOVER REQUIRED   PDF-p. 58
3.2.1.10   HANDOVER REQUEST ACKNOWLEDGE   PDF-p. 59
3.2.1.11   HANDOVER COMMAND
3.2.1.12   HANDOVER COMPLETE
3.2.1.13   HANDOVER SUCCEEDED   PDF-p. 60
3.2.1.14   HANDOVER CANDIDATE ENQUIRE
3.2.1.15   HANDOVER CANDIDATE RESPONSE      Up
3.2.1.16   HANDOVER FAILURE
3.2.1.17   RESOURCE REQUEST   PDF-p. 61
3.2.1.18   RESOURCE INDICATION
3.2.1.19   PAGING   PDF-p. 62
3.2.1.20   CLEAR REQUEST
3.2.1.21   CLEAR COMMAND
3.2.1.22   CLEAR COMPLETE   PDF-p. 63
3.2.1.23   RESET
3.2.1.24   RESET ACKNOWLEDGE
3.2.1.25   HANDOVER PERFORMED      Up
3.2.1.26   OVERLOAD   PDF-p. 64
3.2.1.27   MSC INVOKE TRACE
3.2.1.28   BSS INVOKE TRACE   PDF-p. 65
3.2.1.29   CLASSMARK UPDATE
3.2.1.30   CIPHER MODE COMMAND
3.2.1.31   CIPHER MODE COMPLETE
3.2.1.32   COMPLETE LAYER 3 INFORMATION   PDF-p. 66
3.2.1.33   QUEUEING INDICATION
3.2.1.34   SAPI "n" REJECT
3.2.1.35   Void
3.2.1.36   Void
3.2.1.37   HANDOVER REQUIRED REJECT   PDF-p. 67      Up
3.2.1.38   RESET CIRCUIT
3.2.1.39   RESET CIRCUIT ACKNOWLEDGE
3.2.1.40   HANDOVER DETECT
3.2.1.41   CIRCUIT GROUP BLOCK   PDF-p. 68
3.2.1.42   CIRCUIT GROUP BLOCKING ACKNOWLEDGE
3.2.1.43   CIRCUIT GROUP UNBLOCK
3.2.1.44   CIRCUIT GROUP UNBLOCKING ACKNOWLEDGE
3.2.1.45   CONFUSION   PDF-p. 69
3.2.1.46   CLASSMARK REQUEST
3.2.1.47   UNEQUIPPED CIRCUIT      Up
3.2.1.48   CIPHER MODE REJECT
3.2.1.49   LOAD INDICATION   PDF-p. 70
3.2.1.50   VGCS/VBS SETUP
3.2.1.51   VGCS/VBS SETUP ACK
3.2.1.52   VGCS/VBS SETUP REFUSE
3.2.1.53   VGCS/VBS ASSIGNMENT REQUEST   PDF-p. 71
3.2.1.54   VGCS/VBS ASSIGNMENT RESULT
3.2.1.55   VGCS/VBS ASSIGNMENT FAILURE
3.2.1.56   VGCS/VBS QUEUING INDICATION   PDF-p. 72
3.2.1.57   UPLINK REQUEST      Up
3.2.1.58   UPLINK REQUEST ACKNOWLEDGE
3.2.1.59   UPLINK REQUEST CONFIRMATION
3.2.1.60   UPLINK RELEASE INDICATION   PDF-p. 73
3.2.1.61   UPLINK REJECT COMMAND
3.2.1.62   UPLINK RELEASE COMMAND
3.2.1.63   UPLINK SEIZED COMMAND
3.2.1.64   SUSPEND   PDF-p. 74
3.2.1.65   RESUME
3.2.1.66   CHANGE CIRCUIT
3.2.1.67   CHANGE CIRCUIT ACKNOWLEDGE      Up
3.2.1.68   Common ID
3.2.1.69   LSA INFORMATION   PDF-p. 75
3.2.1.70   CONNECTION ORIENTED INFORMATION
3.2.1.71   PERFORM LOCATION REQUEST
3.2.1.72   PERFORM LOCATION RESPONSE
3.2.1.73   PERFORM LOCATION ABORT   PDF-p. 76
3.2.1.74   CONNECTIONLESS INFORMATION
3.2.2   Signalling element coding
3.2.2.1   Message Type   PDF-p. 79
3.2.2.2   Circuit Identity Code   PDF-p. 80      Up
3.2.2.3   Connection Release Requested
3.2.2.4   Resource Available   PDF-p. 81
3.2.2.5   Cause   PDF-p. 82
3.2.2.6   IMSI   PDF-p. 84
3.2.2.7   TMSI
3.2.2.8   Number Of MSs
3.2.2.9   Layer 3 Header Information   PDF-p. 85
3.2.2.10   Encryption Information
3.2.2.11   Channel Type   PDF-p. 86
3.2.2.12   Periodicity   PDF-p. 92      Up
3.2.2.13   Extended Resource Indicator
3.2.2.14   Total Resource Accessible   PDF-p. 93
3.2.2.15   LSA Identifier
3.2.2.16   LSA Identifier List
3.2.2.17   Cell Identifier   PDF-p. 94
3.2.2.18   Priority   PDF-p. 96
3.2.2.19   Classmark Information Type 2   PDF-p. 97
3.2.2.20   Classmark Information Type 3
3.2.2.21   Interference Band To Be Used   PDF-p. 98
3.2.2.22   RR Cause      Up
3.2.2.23   LSA Information
3.2.2.24   Layer 3 Information   PDF-p. 99
3.2.2.25   DLCI
3.2.2.26   Downlink DTX Flag
3.2.2.27   Cell Identifier List   PDF-p. 100
3.2.2.28   Response Request   PDF-p. 103
3.2.2.29   Resource Indication Method
3.2.2.30   Classmark Information Type 1
3.2.2.31   Circuit Identity Code List   PDF-p. 104
3.2.2.32   Diagnostics   PDF-p. 105      Up
3.2.2.33   Chosen Channel
3.2.2.34   Cipher Response Mode   PDF-p. 106
3.2.2.35   Layer 3 Message Contents   PDF-p. 107
3.2.2.36   Channel Needed
3.2.2.37   Trace Type
3.2.2.38   TriggerID
3.2.2.39   Trace Reference   PDF-p. 108
3.2.2.40   TransactionID
3.2.2.41   Mobile Identity
3.2.2.42   OMCID      Up
3.2.2.43   Forward Indicator
3.2.2.44   Chosen Encryption Algorithm   PDF-p. 109
3.2.2.45   Circuit Pool
3.2.2.46   Circuit Pool List   PDF-p. 112
3.2.2.47   Time Indication
3.2.2.48   Resource Situation   PDF-p. 113
3.2.2.49   Current Channel Type 1   PDF-p. 114
3.2.2.50   Queuing Indicator   PDF-p. 115
3.2.2.51   Speech Version
3.2.2.52   Assignment Requirement   PDF-p. 116      Up
3.2.2.53   Void
3.2.2.54   Talker Flag
3.2.2.55   Group Call Reference
3.2.2.56   eMLPP Priority
3.2.2.57   Configuration Evolution Indication   PDF-p. 117
3.2.2.58   Old BSS to New BSS information
3.2.2.59   Void
3.2.2.60   LCS QoS   PDF-p. 118
3.2.2.61   LSA Access Control Suppression
3.2.2.62   LCS Priority
3.2.2.63   Location Type
3.2.2.64   Location Estimate   PDF-p. 119      Up
3.2.2.65   Positioning Data
3.2.2.66   LCS Cause
3.2.2.67   LCS Client Type   PDF-p. 120
3.2.2.68   APDU
3.2.2.69   Network Element Identity
3.2.2.70   GPS Assistance Data
3.2.2.71   Deciphering Keys   PDF-p. 121
3.2.2.72   Return Error Request
3.2.2.73   Return Error Cause
3.2.2.74   Segmentation      Up
3.2.2.75   Service Handover   PDF-p. 122
3.2.2.76   Source RNC to target RNC transparent information (UMTS)
3.2.2.77   Source RNC to target RNC transparent information (cdma2000)
3.2.3   Signalling Field Element Coding   PDF-p. 123
3.2.4   List of Timers in the BSSMAP Procedures   PDF-p. 127
3.3   SDL Representation Of The Procedures At The BSS
4   Broadcast Information Control Channel
5   Vocabulary
6   List of diagrams   PDF-p. 129
A   Change history   PDF-p. 138

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