ISO 22672:2021
(Main)Space data and information transfer systems — Space link extension (SLE) — Forward space packet service specification
Space data and information transfer systems — Space link extension (SLE) — Forward space packet service specification
This document defines the Forward Space Packet (FSP) service in conformance with the transfer services specified in reference [1], Cross Support Reference Model―Part 1: SLE Services. The FSP service is a Space Link Extension (SLE) transfer service that enables a mission to send Space Packets to a spacecraft in sequence-controlled or expedited mode. This document defines, in an abstract manner, the FSP service in terms of: the operations necessary to provide the transfer service; the parameter data associated with each operation; the behaviors that result from the invocation of each operation; and the relationship between, and the valid sequence of, the operations and resulting behaviors. It does not specify: individual implementations or products; the implementation of entities or interfaces within real systems; the methods or technologies required to radiate Space Packets to a spacecraft and to acquire telemetry frames from the signals received from that spacecraft for extraction of the Operational Control Field; the methods or technologies required for communications; or the management activities necessary to schedule, configure, and control the FSP service. NOTE – While the FSP service as described in reference [1] is conceived to handle a variety of packet data structures, this version of the FSP Recommended Standard is restricted to the handling of Space Packets as defined in reference [6]. This version of the FSP Recommended Standard is specific to the transfer of Space Packets to be transmitted via the Telecommand protocol stack as defined in references [3], [4], and [5]. The Cross Support Reference Model (reference [1]) specifies that the FSP service may also be used in conjunction with the Advanced Orbiting System protocol stack, but that mode of operation is outside the scope of this version of the Recommended Standard. The FSP service is provided in the online delivery mode, as defined in reference [1]. The offline delivery mode is the subject of further study.
Systèmes de transfert des informations et données spatiales — Extension de liaisons spatiales (SLE) — Spécification d'envoi de données spatiales par paquets
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INTERNATIONAL ISO
STANDARD 22672
Third edition
2021-06
Space data and information transfer
systems — Space link extension (SLE)
— Forward space packet service
specification
Systèmes de transfert des informations et données spatiales —
Extension de liaisons spatiales (SLE) — Spécification d'envoi de
données spatiales par paquets
Reference number
©
ISO 2021
© ISO 2021
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may
be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting
on the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address
below or ISO’s member body in the country of the requester.
ISO copyright office
CP 401 • Ch. de Blandonnet 8
CH-1214 Vernier, Geneva
Phone: +41 22 749 01 11
Email: copyright@iso.org
Website: www.iso.org
Published in Switzerland
ii © ISO 2021 – All rights reserved
Foreword
ISO (the International Organization for Standardization) is a worldwide federation of national standards
bodies (ISO member bodies). The work of preparing International Standards is normally carried out
through ISO technical committees. Each member body interested in a subject for which a technical
committee has been established has the right to be represented on that committee. International
organizations, governmental and non-governmental, in liaison with ISO, also take part in the work. ISO
collaborates closely with the International Electrotechnical Commission (IEC) on all matters of
electrotechnical standardization.
The procedures used to develop this document and those intended for its further maintenance are
described in the ISO/IEC Directives, Part 1. In particular, the different approval criteria needed for the
different types of ISO documents should be noted (see www.iso.org/directives).
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. ISO shall not be held responsible for identifying any or all such patent rights. Details of any
patent rights identified during the development of the document will be in the Introduction and/or on
the ISO list of patent declarations received (see www.iso.org/patents).
Any trade name used in this document is information given for the convenience of users and does not
constitute an endorsement.
For an explanation of the voluntary nature of standards, the meaning of ISO specific terms and
expressions related to conformity assessment, as well as information about ISO's adherence to the World
Trade Organization (WTO) principles in the Technical Barriers to Trade (TBT) see
www.iso.org/iso/foreword.html.
This document was prepared by the Consultative Committee for Space Data Systems (CCSDS) (as CCSDS
912.3-B-3, August 2016) and was adopted (without modifications) by Technical Committee ISO/TC 20,
Space vehicles, Subcommittee SC 13, Space data and information transfer systems.
This third edition cancels and replaces the second edition (ISO 22672:2011), which has been technically
revised.
The main changes compared to the previous edition are as follows:
— adds clarifications and corrections.
Any feedback or questions on this document should be directed to the user’s national standards body. A
complete listing of these bodies can be found at www.iso.org/members.html.
CCSDS RECOMMENDED STANDARD FOR SLE FSP SERVICE
CONTENTS
Section Page
1 INTRODUCTION . 1-1
1.1 PURPOSE OF THIS RECOMMENDED STANDARD . 1-1
1.2 SCOPE . 1-1
1.3 APPLICABILITY . 1-2
1.4 RATIONALE . 1-2
1.5 DOCUMENT STRUCTURE . 1-3
1.6 DEFINITIONS, NOMENCLATURE, AND CONVENTIONS . 1-5
1.7 REFERENCES . 1-14
2 DESCRIPTION OF THE FORWARD SPACE PACKET SERVICE . 2-1
2.1 OVERVIEW . 2-1
2.2 SPACE LINK EXTENSION REFERENCE MODEL . 2-1
2.3 SERVICE MANAGEMENT . 2-3
2.4 ARCHITECTURE MODEL—FUNCTIONAL VIEW . 2-3
2.5 ARCHITECTURE MODEL—CROSS SUPPORT VIEW . 2-8
2.6 FUNCTIONAL DESCRIPTION . 2-9
2.7 OPERATIONAL SCENARIO . 2-16
2.8 SECURITY ASPECTS OF THE SLE FORWARD SPACE
PACKET (FSP) TRANSFER SERVICE . 2-18
3 FSP SERVICE OPERATIONS . 3-1
3.1 GENERAL CONSIDERATIONS . 3-1
3.2 FSP-BIND . 3-10
3.3 FSP-UNBIND . 3-17
3.4 FSP-START . 3-20
3.5 FSP-STOP . 3-24
3.6 FSP-TRANSFER-DATA . 3-27
3.7 FSP-ASYNC-NOTIFY . 3-38
3.8 FSP-SCHEDULE-STATUS-REPORT . 3-53
3.9 FSP-STATUS-REPORT . 3-57
3.10 FSP-GET-PARAMETER . 3-64
3.11 FSP-THROW-EVENT . 3-70
3.12 FSP-INVOKE-DIRECTIVE . 3-75
3.13 FSP-PEER-ABORT . 3-80
4 FSP PROTOCOL . 4-1
4.1 GENERIC PROTOCOL CHARACTERISTICS . 4-1
4.2 FSP SERVICE PROVIDER BEHAVIOR. 4-4
CCSDS 912.3-B-3 Page vi August 2016
CCSDS RECOMMENDED STANDARD FOR SLE FSP SERVICE
CONTENTS (continued)
Section Page
ANNEX A DATA TYPE DEFINITIONS (NORMATIVE) . A-1
ANNEX B FSP QUEUES AND MULTIPLEXING BEHAVIOR
DEFINITION (NORMATIVE) .B-1
ANNEX C PRODUCTION STATUS (NORMATIVE) . C-1
ANNEX D FUNCTIONAL GROUP PRODUCTION REQUIREMENTS
FOR FSP (NORMATIVE) . D-1
ANNEX E CONFORMANCE MATRIX (NORMATIVE) .E-1
ANNEX F INDEX TO DEFINITIONS (INFORMATIVE) . F-3
ANNEX G ACRONYMS (INFORMATIVE) . G-1
ANNEX H THROW EVENT DEFINITIONS (INFORMATIVE) . H-1
ANNEX I INFORMATIVE REFERENCES (INFORMATIVE) . I-1
Figure
1-1 SLE Services Documentation . 1-4
2-1 Forward Telecommand Functional Groups . 2-4
2-2 FSP Service Production and Provision . 2-7
2-3 Example of the Management and Provision of FSP Service . 2-8
2-4 Simplified FSP Service Provider State Transition Diagram . 2-11
2-5 Communications Realization of FSP Service . 2-14
B-1 FSP MAP and TC Frame Multiplexing .B-1
B-2 MAP and VC Multiplexing .B-2
B-3 FSP Queues .B-4
C-1 FSP Production Status Diagram .C-1
Table
2-1 FSP Service Operations . 2-10
3-1 Setting of FSP Service Operation Parameters . 3-6
3-2 FSP-BIND Parameters . 3-11
3-3 FSP-UNBIND Parameters . 3-18
3-4 FSP-START Parameters . 3-20
3-5 FSP-STOP Parameters . 3-24
3-6 FSP-TRANSFER-DATA Parameters . 3-28
3-7 FSP-ASYNC-NOTIFY Parameters . 3-38
3-8 FSP-SCHEDULE-STATUS-REPORT Parameters . 3-53
3-9 FSP-STATUS-REPORT Parameters . 3-57
3-10 FSP-GET-PARAMETER Parameters . 3-64
3-11 FSP Service Parameters . 3-65
3-12 FSP-THROW-EVENT Parameters . 3-71
CCSDS 912.3-B-3 Page vii August 2016
CCSDS RECOMMENDED STANDARD FOR SLE FSP SERVICE
CONTENTS (continued)
Table Page
3-13 FSP-INVOKE-DIRECTIVE Parameters . 3-75
3-14 FSP-PEER-ABORT Parameters . 3-80
4-1 Provider Behavior . 4-6
4-2 Event Description References . 4-10
4-3 Predicate Definitions . 4-11
4-4 Boolean Flags . 4-11
4-5 Compound Action Definitions . 4-12
C-1 Production Status Transitions .C-2
C-2 Effects of Production Status on Operations .C-4
D-1 Forward CLTU Generation Aggregate Production Status . D-3
D-2 Forward TC VC Data Insertion Aggregate Production Status . D-5
E-1 Conformance Matrix for FSP Service (Operations) . E-1
E-2 Conformance Matrix for FSP Service (Other Requirements) . E-2
H-1 Throw Event Examples . H-1
CCSDS 912.3-B-3 Page viii August 2016
CCSDS RECOMMENDED STANDARD FOR SLE FSP SERVICE
1 INTRODUCTION
1.1 PURPOSE OF THIS RECOMMENDED STANDARD
This Recommended Standard defines the Forward Space Packet (FSP) service in
conformance with the transfer services specified in reference [1], Cross Support Reference
Model―Part 1: SLE Services. The FSP service is a Space Link Extension (SLE) transfer
service that enables a mission to send Space Packets to a spacecraft in sequence-controlled or
expedited mode.
1.2 SCOPE
This Recommended Standard defines, in an abstract manner, the FSP service in terms of:
a) the operations necessary to provide the transfer service;
b) the parameter data associated with each operation;
c) the behaviors that result from the invocation of each operation; and
d) the relationship between, and the valid sequence of, the operations and resulting
behaviors.
It does not specify:
a) individual implementations or products;
b) the implementation of entities or interfaces within real systems;
c) the methods or technologies required to radiate Space Packets to a spacecraft and to
acquire telemetry frames from the signals received from that spacecraft for extraction
of the Operational Control Field;
d) the methods or technologies required for communications; or
e) the management activities necessary to schedule, configure, and control the FSP
service
...
INTERNATIONAL ISO
STANDARD 22672
Third edition
2021-06
Space data and information transfer
systems — Space link extension (SLE)
— Forward space packet service
specification
Systèmes de transfert des informations et données spatiales —
Extension de liaisons spatiales (SLE) — Spécification d'envoi de
données spatiales par paquets
Reference number
©
ISO 2021
© ISO 2021
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may
be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting
on the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address
below or ISO’s member body in the country of the requester.
ISO copyright office
CP 401 • Ch. de Blandonnet 8
CH-1214 Vernier, Geneva
Phone: +41 22 749 01 11
Email: copyright@iso.org
Website: www.iso.org
Published in Switzerland
ii © ISO 2021 – All rights reserved
Foreword
ISO (the International Organization for Standardization) is a worldwide federation of national standards
bodies (ISO member bodies). The work of preparing International Standards is normally carried out
through ISO technical committees. Each member body interested in a subject for which a technical
committee has been established has the right to be represented on that committee. International
organizations, governmental and non-governmental, in liaison with ISO, also take part in the work. ISO
collaborates closely with the International Electrotechnical Commission (IEC) on all matters of
electrotechnical standardization.
The procedures used to develop this document and those intended for its further maintenance are
described in the ISO/IEC Directives, Part 1. In particular, the different approval criteria needed for the
different types of ISO documents should be noted (see www.iso.org/directives).
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. ISO shall not be held responsible for identifying any or all such patent rights. Details of any
patent rights identified during the development of the document will be in the Introduction and/or on
the ISO list of patent declarations received (see www.iso.org/patents).
Any trade name used in this document is information given for the convenience of users and does not
constitute an endorsement.
For an explanation of the voluntary nature of standards, the meaning of ISO specific terms and
expressions related to conformity assessment, as well as information about ISO's adherence to the World
Trade Organization (WTO) principles in the Technical Barriers to Trade (TBT) see
www.iso.org/iso/foreword.html.
This document was prepared by the Consultative Committee for Space Data Systems (CCSDS) (as CCSDS
912.3-B-3, August 2016) and was adopted (without modifications) by Technical Committee ISO/TC 20,
Space vehicles, Subcommittee SC 13, Space data and information transfer systems.
This third edition cancels and replaces the second edition (ISO 22672:2011), which has been technically
revised.
The main changes compared to the previous edition are as follows:
— adds clarifications and corrections.
Any feedback or questions on this document should be directed to the user’s national standards body. A
complete listing of these bodies can be found at www.iso.org/members.html.
CCSDS RECOMMENDED STANDARD FOR SLE FSP SERVICE
CONTENTS
Section Page
1 INTRODUCTION . 1-1
1.1 PURPOSE OF THIS RECOMMENDED STANDARD . 1-1
1.2 SCOPE . 1-1
1.3 APPLICABILITY . 1-2
1.4 RATIONALE . 1-2
1.5 DOCUMENT STRUCTURE . 1-3
1.6 DEFINITIONS, NOMENCLATURE, AND CONVENTIONS . 1-5
1.7 REFERENCES . 1-14
2 DESCRIPTION OF THE FORWARD SPACE PACKET SERVICE . 2-1
2.1 OVERVIEW . 2-1
2.2 SPACE LINK EXTENSION REFERENCE MODEL . 2-1
2.3 SERVICE MANAGEMENT . 2-3
2.4 ARCHITECTURE MODEL—FUNCTIONAL VIEW . 2-3
2.5 ARCHITECTURE MODEL—CROSS SUPPORT VIEW . 2-8
2.6 FUNCTIONAL DESCRIPTION . 2-9
2.7 OPERATIONAL SCENARIO . 2-16
2.8 SECURITY ASPECTS OF THE SLE FORWARD SPACE
PACKET (FSP) TRANSFER SERVICE . 2-18
3 FSP SERVICE OPERATIONS . 3-1
3.1 GENERAL CONSIDERATIONS . 3-1
3.2 FSP-BIND . 3-10
3.3 FSP-UNBIND . 3-17
3.4 FSP-START . 3-20
3.5 FSP-STOP . 3-24
3.6 FSP-TRANSFER-DATA . 3-27
3.7 FSP-ASYNC-NOTIFY . 3-38
3.8 FSP-SCHEDULE-STATUS-REPORT . 3-53
3.9 FSP-STATUS-REPORT . 3-57
3.10 FSP-GET-PARAMETER . 3-64
3.11 FSP-THROW-EVENT . 3-70
3.12 FSP-INVOKE-DIRECTIVE . 3-75
3.13 FSP-PEER-ABORT . 3-80
4 FSP PROTOCOL . 4-1
4.1 GENERIC PROTOCOL CHARACTERISTICS . 4-1
4.2 FSP SERVICE PROVIDER BEHAVIOR. 4-4
CCSDS 912.3-B-3 Page vi August 2016
CCSDS RECOMMENDED STANDARD FOR SLE FSP SERVICE
CONTENTS (continued)
Section Page
ANNEX A DATA TYPE DEFINITIONS (NORMATIVE) . A-1
ANNEX B FSP QUEUES AND MULTIPLEXING BEHAVIOR
DEFINITION (NORMATIVE) .B-1
ANNEX C PRODUCTION STATUS (NORMATIVE) . C-1
ANNEX D FUNCTIONAL GROUP PRODUCTION REQUIREMENTS
FOR FSP (NORMATIVE) . D-1
ANNEX E CONFORMANCE MATRIX (NORMATIVE) .E-1
ANNEX F INDEX TO DEFINITIONS (INFORMATIVE) . F-3
ANNEX G ACRONYMS (INFORMATIVE) . G-1
ANNEX H THROW EVENT DEFINITIONS (INFORMATIVE) . H-1
ANNEX I INFORMATIVE REFERENCES (INFORMATIVE) . I-1
Figure
1-1 SLE Services Documentation . 1-4
2-1 Forward Telecommand Functional Groups . 2-4
2-2 FSP Service Production and Provision . 2-7
2-3 Example of the Management and Provision of FSP Service . 2-8
2-4 Simplified FSP Service Provider State Transition Diagram . 2-11
2-5 Communications Realization of FSP Service . 2-14
B-1 FSP MAP and TC Frame Multiplexing .B-1
B-2 MAP and VC Multiplexing .B-2
B-3 FSP Queues .B-4
C-1 FSP Production Status Diagram .C-1
Table
2-1 FSP Service Operations . 2-10
3-1 Setting of FSP Service Operation Parameters . 3-6
3-2 FSP-BIND Parameters . 3-11
3-3 FSP-UNBIND Parameters . 3-18
3-4 FSP-START Parameters . 3-20
3-5 FSP-STOP Parameters . 3-24
3-6 FSP-TRANSFER-DATA Parameters . 3-28
3-7 FSP-ASYNC-NOTIFY Parameters . 3-38
3-8 FSP-SCHEDULE-STATUS-REPORT Parameters . 3-53
3-9 FSP-STATUS-REPORT Parameters . 3-57
3-10 FSP-GET-PARAMETER Parameters . 3-64
3-11 FSP Service Parameters . 3-65
3-12 FSP-THROW-EVENT Parameters . 3-71
CCSDS 912.3-B-3 Page vii August 2016
CCSDS RECOMMENDED STANDARD FOR SLE FSP SERVICE
CONTENTS (continued)
Table Page
3-13 FSP-INVOKE-DIRECTIVE Parameters . 3-75
3-14 FSP-PEER-ABORT Parameters . 3-80
4-1 Provider Behavior . 4-6
4-2 Event Description References . 4-10
4-3 Predicate Definitions . 4-11
4-4 Boolean Flags . 4-11
4-5 Compound Action Definitions . 4-12
C-1 Production Status Transitions .C-2
C-2 Effects of Production Status on Operations .C-4
D-1 Forward CLTU Generation Aggregate Production Status . D-3
D-2 Forward TC VC Data Insertion Aggregate Production Status . D-5
E-1 Conformance Matrix for FSP Service (Operations) . E-1
E-2 Conformance Matrix for FSP Service (Other Requirements) . E-2
H-1 Throw Event Examples . H-1
CCSDS 912.3-B-3 Page viii August 2016
CCSDS RECOMMENDED STANDARD FOR SLE FSP SERVICE
1 INTRODUCTION
1.1 PURPOSE OF THIS RECOMMENDED STANDARD
This Recommended Standard defines the Forward Space Packet (FSP) service in
conformance with the transfer services specified in reference [1], Cross Support Reference
Model―Part 1: SLE Services. The FSP service is a Space Link Extension (SLE) transfer
service that enables a mission to send Space Packets to a spacecraft in sequence-controlled or
expedited mode.
1.2 SCOPE
This Recommended Standard defines, in an abstract manner, the FSP service in terms of:
a) the operations necessary to provide the transfer service;
b) the parameter data associated with each operation;
c) the behaviors that result from the invocation of each operation; and
d) the relationship between, and the valid sequence of, the operations and resulting
behaviors.
It does not specify:
a) individual implementations or products;
b) the implementation of entities or interfaces within real systems;
c) the methods or technologies required to radiate Space Packets to a spacecraft and to
acquire telemetry frames from the signals received from that spacecraft for extraction
of the Operational Control Field;
d) the methods or technologies required for communications; or
e) the management activities necessary to schedule, configure, and control the FSP
service
...
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