ETSI TS 102 744-3-2 V1.1.1 (2015-10)

Satellite Earth Stations and Systems (SES); Family SL Satellite Radio Interface (Release 1); Part 3: Control Plane and User Plane Specifications; Sub-part 2: Bearer Control Layer Operation

DTS/SES-00299-3-2

General Information

• Status: Published
• Publication Date: 25-Oct-2015
• Technical Committee: SES SCN - Satellite Communications and Navigation
• Current Stage: 12 - Completion
• Due Date: 25-Sep-2015
• Completion Date: 26-Oct-2015

Standards Content (Sample)

ETSI TS 102 744-3-2 V1.1.1 (2015-10)






TECHNICAL SPECIFICATION
Satellite Earth Stations and Systems (SES);
Family SL Satellite Radio Interface (Release 1);
Part 3: Control Plane and User Plane Specifications;
Sub-part 2: Bearer Control Layer Operation

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2 ETSI TS 102 744-3-2 V1.1.1 (2015-10)



Reference
DTS/SES-00299-3-2
Keywords
3GPP, GPRS, GSM, GSO, interface, MSS, radio,
satellite, TDM, TDMA, UMTS
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3 ETSI TS 102 744-3-2 V1.1.1 (2015-10)
Contents
Intellectual Property Rights . 7
Foreword . 7
Modal verbs terminology . 7
Introduction . 7
1 Scope . 8
2 References . 8
2.1 Normative references . 8
2.2 Informative references . 9
3 Symbols and abbreviations . 9
3.1 Symbols . 9
3.2 Abbreviations . 9
4 General Architecture . 9
5 Bearer Control Services. 11
5.1 Bearer Control Service Access Points . 11
5.1.0 General . 11
5.1.1 Services provided to Upper Layers . 11
5.1.2 Services Expected from the Lower Layers . 11
5.1.3 Services Expected from External Entities . 12
5.2 Bearer Control Layer Service Primitive s . 12
5.2.1 Data Transfer Service Access Points . 12
5.2.1.1 BCt-DATA-SAP Primitives and Parameters. 12
5.2.1.2 BCt-UCDATA-SAP Primitives and Parameters . 12
5.2.2 Navigational Interface Service Access Points. 12
5.2.2.1 BCt-NAV-SAP (Maritime and Land-Mobile Class UE Only) . 12
5.2.2.2 BCt_NAV_SAP Interface with avionics (Aeronautical Class UE Only) . 13
5.2.3 Control Plane SAPs . 14
5.2.3.1 STATUS-SAP Primitives and Parameters . 14
5.2.3.2 BCt-COM-SAP Primitives and Parameters . 16
5.2.3.3 CBCt-SAP Primitives and Parameters . 16
6 Bearer Control Architecture . 17
6.1 Bearer Control Architecture - UE Side . 17
6.2 Overview of Functional Entities in the Bearer Control Layer . 17
6.2.0 General . 17
6.2.1 Bearer Control Manager (BCtM) . 18
6.2.1.0 General . 18
6.2.1.1 System Information Broadcast Handling Unit . 18
6.2.1.2 Common Signalling Handler (COM_BCt). 18
6.2.2 UE Bearer Control Unit (UE_BCt) . 19
6.2.2.1 UE BCt User Plane Handling Function . 19
6.2.2.2 Queue Status Reporting . 20
6.2.2.3 Return Schedule Processing . 20
6.2.2.4 Transmit Burst Assembly . 20
6.2.2.5 Bearer Transmit Buffer (Bearer_Tx) . 21
6.2.2.6 Bearer Receive Buffer (Bearer_Rx) . 21
7 Bearer Control Management (BCT-M) Behaviour . 21
7.1 Physical Bearer Management . 21
7.1.1 Forward Bearer Configuration and Initial Bearer Scan . 21
7.1.1.0 General . 21
7.1.1.1 Global_Scan process . 21
7.1.1.2 Default_Scan process . 22
7.1.2 Forward Bearer Frequency Control within a Bearer Control . 22
7.1.2.1 Retuning a population of UEs . 22
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4 ETSI TS 102 744-3-2 V1.1.1 (2015-10)
7.1.2.2 Relocation of a specific UE . 22
7.1.3 Forward bearer synchronization loss . 22
7.1.4 Forward bearer Doppler Compensation (Aeronautical Class UEs only) . 23
7.1.5 Return Bearer Doppler Compensation (Aeronautical Class UE Only) . 23
7.1.6 Return bearer frequency correction (Land-Mobile and Maritime Class UEs) . 23
7.2 System Information Broadcast Handling . 23
7.2.1 Storage of System Information . 23
7.2.2 Acquisition of System Information . 23
7.2.3 System Information Index - UE Behaviour . 23
7.2.4 Wrap Around, Instances and Version Number Range . 26
7.3 Common Signalling (Com_BCt) Procedures . 26
7.4 Connection Control Operations . 27
7.4.0 General . 27
7.4.1 Connection Set-up Operations . 27
7.4.2 Connection QoS Control . 27
7.4.3 Connection Release Operations . 27
7.4.4 Handover Operations . 28
7.5 Timing Control Operation . 28
7.5.1 Principles of timing control operation . 28
7.5.2 Primary and Secondary Timing Modes . 29
7.5.3 Transition between Primary and Secondary Timing modes . 29
7.5.4 Aeronautical Class UE without GPS . 29
7.6 Sleep Mode Operations . 29
8 Bearer Control User Plane (UE-BCT) Behaviour . 31
8.1 Ciphering Operations . 31
8.1.0 General . 31
8.1.1 Input Parameters to the Ciphering Algorithm . 32
8.1.1.1 CK . 32
8.1.1.2 COUNT-C . 32
8.1.1.3 TBCNID . 33
8.1.1.4 DIRECTION . 33
8.1.1.5 LENGTH . 33
8.1.2 Initialization of Keystream Generator. 33
8.1.3 Synchronization of ciphering . 33
8.2 Queue Status Reporting . 34
8.2.0 General . 34
8.2.1 Status SDU Queue Reporting Mechanisms . 34
8.2.1.0 General . 34
8.2.1.1 Principle of Operation . 35
8.2.1.2 Data Status Update . 35
8.2.1.3 Definition of QueueSize parameters sent by Connection Layer . 36
8.2.1.4 Processing of Status Update . 36
8.2.1.5 Status SDU Generation . 37
8.2.1.5.0 General . 37
8.2.1.5.1 Criterion A . 39
8.2.1.5.2 Criterion B . 40
8.2.1.6 Status SDU Control . 42
8.2.1.6.1 Status Ack . 42
8.2.1.6.2 Status SDU Control Mechanisms . 42
8.2.1.6.3 Status Reporting Timers . 42
8.2.2 QLen SDU Queue Status Reporting Mechanism . 43
8.2.3 QRate SDU Queue Status Reporting Mechanism . 44
8.3 Return Schedule Processing . 45
8.3.1 General Concept of Operation . 45
8.3.2 Return Schedule Description . 46
8.3.3 Position of Return Schedules . 47
8.3.4 Dedicated Reservation Access . 49
8.3.4.1 Dedicated Return Bearer (normal) operation . 49
8.3.4.2 Reserved (Unused) Slots . 49
8.3.5 Shared Reservation Access . 49
8.3.6 Controlled Random Access . 51
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5 ETSI TS 102 744-3-2 V1.1.1 (2015-10)
8.3.7 Contention Access . 52
8.3.8 Dedicated Return Bearer (High Data Rate) operation . 52
8.4 Transmit Burst Assembly . 52
8.4.0 General . 52
8.4.1 Usage of Dedicated Reservation Slots . 53
8.4.1.1 Multiplexing of Data and Queue Status Reporting in Dedicated Reservations . 53
8.4.1.2 DTX Operation . 55
8.4.1.3 Enhanced ISDN Data Transmission . 55
8.4.2 Shared Reservation Access . 56
8.4.2.1 Multiplexing of Data and Queue Reporting information in Shared Reservations . 56
8.4.2.2 DTX operation . 57
8.4.3 Controlled Random Access . 57
8.4.3.1 General Principles of operation . 57
8.4.3.1.0 Overview . 57
8.4.3.1.1 Initiation of transmission . 58
8.4.3.1.2 Continuation of transmission . 58
8.4.3.2 Multiplexing of Data and Queue Status Reports in Controlled Random Access . 58
8.4.3.3 Untimed operation of Controlled Random Access . 59
8.4.4 Contention slot usage . 59
8.4.4.1 General Principles of operation . 59
8.4.4.2 Contention Slot Usage Backoff mechanisms . 59
8.4.4.3 Contention Slot Usage in Untimed Access Mode . 60
8.4.4.4 Queue Status Reporting in contention slots . 61
8.4.4.5 Transmit_Schedule Process (Informational) . 63
8.4.4.6 Create_slot Process . 63
8.5 Return Link Adaptation . 65
8.5.0 Overview . 65
8.5.1 General Principles of Operation. 65
8.5.1.0 Overview . 65
8.5.1.1 Basic Operation Principle . 65
8.5.1.2 Bearer Table . 66
8.5.1.2.1 Bearer Table Usage . 66
8.5.1.2.2 Extensions to Bearer Table Usage for mobile UE classes . 68
8.5.1.2.3 Maximum Code Rate Limitations . 68
8.5.2 Dedicated Reservation and Contention Access Modes . 68
8.5.2.1 Initial Contention Mode Access . 68
8.5.2.2 Code rate selection in transmission schedule . 69
8.5.3 Shared Reservation and Controlled Random Access Mode . 69
8.5.3.0 General . 69
8.5.3.1 Shared Reservation Access . 69
8.5.3.2 Controlled Random Access Return Link Adaptation . 69
8.5.4 Dedicated Return Bearers (High Data Rate Operation) . 70
8.6 Forward Link Adaptation . 70
8.6.1 Shared Access Forward Bearers . 70
8.6.1.1 General principles . 70
8.6.1.2 Measuring Forward Link Quality . 70
8.6.1.3 C/No Reporting . 71
8.6.1.4 Code Rate Selection . 71
8.6.1.5 Sleep Mode . 72
8.6.2 Variable Modulation Index Shared Access Bearers (FR80T2.5X4-5B, FR80T5X4-5B) . 72
8.6.2.1 General principles . 72
8.6.2.2 Signalling of forward link quality reports . 72
8.6.3 Dedicated Forward Bearers (FR80T2.5X16/32/64, FR80T5X16/32/64). 72
8.7 Receiver Processing (Bearer_Rx) . 73
8.8 Transmit Processing (Bearer_Tx) . 75
8.8.0 General . 75
8.8.1 Dedicated Reservation and Contention Mode Bursts . 75
8.8.1.1 BCtPDU Addressing mechanisms . 75
8.8.1.2 CRC generation and Burst Formatting . 75
8.8.1.3 ISDN Specific Behaviour . 75
8.8.1.4 Physical Layer Parameters . 76
8.8.2 Shared Reservation and Controlled Random Access Mode . 76
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6 ETSI TS 102 744-3-2 V1.1.1 (2015-10)
8.8.2.1 Addressing mechanisms . 76
8.8.2.2 CRC generation and Burst Formatting . 76
8.8.2.3 Contin
...