ISO 17355:2003
(Main)Space data and information transfer systems — CCSDS file delivery protocol
Space data and information transfer systems — CCSDS file delivery protocol
ISO 17355:2002 specifies the requirements for a file delivery protocol and associated service for application in the space environment. It is intended for use over the current and envisaged packet delivery services used in the space environment. ISO 17355:2002 specifies a protocol and associated services that are applicable to space missions with continuous duplex contact, intermittent duplex contact, asymmetrical time-disjunct contact, and simplex contact and operates in the space-to-ground, ground-to-space, and space-to-space directions of transfer. It may be initiated by the file sending or receiving entity.
Systèmes de transfert des informations et données spatiales — Protocole CCSDS de livraison des fichiers
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Standards Content (Sample)
INTERNATIONAL ISO
STANDARD 17355
First edition
2003-02-15
Space data and information transfer
systems — CCSDS file delivery protocol
Systèmes de transfert des informations et données spatiales —
Protocole CCSDS de livraison des fichiers
Reference number
ISO 17355:2003(E)
©
ISO 2003
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ISO 17355:2003(E)
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ISO 17355:2003(E)
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.
International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2.
The main task of technical committees is to prepare International Standards. Draft International Standards
adopted by the technical committees are circulated to the member bodies for voting. Publication as an
International Standard requires approval by at least 75 % of the member bodies casting a vote.
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.
International Standard ISO 17355 was prepared by the Consultative Committee for Space Data Systems
(CCSDS) (as CCSDS 727.0-B-1, January 2002) and was adopted (without modifications except those stated
in Clause 2 of this International Standard) by Technical Committee ISO/TC 20, Aircraft and space vehicles,
Subcommittee SC 13, Space data and information transfer systems.
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INTERNATIONAL STANDARD ISO 17355:2003(E)
Space data and information transfer systems — CCSDS file
delivery protocol
1 Scope
This International Standard specifies the requirements for a file delivery protocol and associated service for
application in the space environment. It is intended for use over the current and envisaged packet delivery
services used in the space environment.
The scope and field of application are furthermore detailed in subclauses 1.1 and 1.2 of the enclosed CCSDS
publication.
2 Requirements
Requirements are the technical recommendations made in the following publication (reproduced on the
following pages), which is adopted as an International Standard:
CCSDS 727.0-B-1, January 2002, Recommendation for space data system standards — CCSDS file delivery
protocol (CFDP).
For the purposes of international standardization, the modifications outlined below shall apply to the specific
clauses and paragraphs of publication CCSDS 727.0-B-1.
Pages i to v
This part is information which is relevant to the CCSDS publication only.
Page 1-5
Add the following information to the references indicated:
1)
[1] Document CCSDS 701.0-B-3, June 2001, is equivalent to ISO 13420:— .
[2] Document CCSDS 102.0-B-5, November 2000, is equivalent to ISO 13419:2003.
[3] Document CCSDS 103.0-B-2, June 2001, is equivalent to ISO 17433:2003.
[4] Document CCSDS 202.0-B-3, June 2001, is equivalent to ISO 12172:2003.
1) To be published. (Revision of ISO 13420:1997)
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ISO 17355:2003(E)
3 Revision of publication CCSDS 727.0-B-1
It has been agreed with the Consultative Committee for Space Data Systems that Subcommittee
ISO/TC 20/SC 13 will be consulted in the event of any revision or amendment of publication
CCSDS 727.0-B-1. To this end, NASA will act as a liaison body between CCSDS and ISO.
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ISO 17355:2003(E)
Consultative
Committee for
Space Data Systems
RECOMMENDATION FOR SPACE
DATA SYSTEM STANDARDS
CCSDS FILE DELIVERY
PROTOCOL (CFDP)
CCSDS 727.0-B-1
BLUE BOOK
January 2002
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ISO 17355:2003(E)
(Blank page)
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ISO 17355:2003(E)
CCSDS RECOMMENDATION FOR CCSDS FILE DELIVERY PROTOCOL (CFDP)
AUTHORITY
Issue: Blue Book, Issue 1
Date: January 2002
Location: Not Applicable
This document has been approved for publication by the Management Council of the
Consultative Committee for Space Data Systems (CCSDS) and represents the consensus
technical agreement of the participating CCSDS Member Agencies. The procedure for
review and authorization of CCSDS Recommendations is detailed in the reference [A1], and
the record of Agency participation in the authorization of this document can be obtained from
the CCSDS Secretariat at the address below.
This Recommendation is published and maintained by:
CCSDS Secretariat
Program Integration Division (Code M-3)
National Aeronautics and Space Administration
Washington, DC 20546, USA
CCSDS 727.0-B-1 Page i January 2002
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ISO 17355:2003(E)
CCSDS RECOMMENDATION FOR CCSDS FILE DELIVERY PROTOCOL (CFDP)
STATEMENT OF INTENT
The Consultative Committee for Space Data Systems (CCSDS) is an organization officially
established by the management of member space Agencies. The Committee meets
periodically to address data systems problems that are common to all participants, and to
formulate sound technical solutions to these problems. Inasmuch as participation in the
CCSDS is completely voluntary, the results of Committee actions are termed
Recommendations and are not considered binding on any Agency.
This Recommendation is issued by, and represents the consensus of, the CCSDS Plenary
body. Agency endorsement of this Recommendation is entirely voluntary. Endorsement,
however, indicates the following understandings:
o Whenever an Agency establishes a CCSDS-related standard, this standard will be in
accord with the relevant Recommendation. Establishing such a standard does not
preclude other provisions which an Agency may develop.
o Whenever an Agency establishes a CCSDS-related standard, the Agency will provide
other CCSDS member Agencies with the following information:
-- The standard itself.
-- The anticipated date of initial operational capability.
-- The anticipated duration of operational service.
o Specific service arrangements shall be made via memoranda of agreement. Neither this
Recommendation nor any ensuing standard is a substitute for a memorandum of
agreement.
No later than five years from its date of issuance, this Recommendation will be reviewed by
the CCSDS to determine whether it should: (1) remain in effect without change; (2) be
changed to reflect the impact of new technologies, new requirements, or new directions; or,
(3) be retired or canceled.
In those instances when a new version of a Recommendation is issued, existing CCSDS-
related Agency standards and implementations are not negated or deemed to be non-CCSDS
compatible. It is the responsibility of each Agency to determine when such standards or
implementations are to be modified. Each Agency is, however, strongly encouraged to direct
planning for its new standards and implementations towards the later version of the
Recommendation.
CCSDS 727.0-B-1 Page ii January 2002
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ISO 17355:2003(E)
CCSDS RECOMMENDATION FOR CCSDS FILE DELIVERY PROTOCOL (CFDP)
FOREWORD
Until relatively recently the typical storage medium for spacecraft has been the tape recorder,
a complex device offering limited data storage and data access. The use of this type of
storage has typically been limited to the recording and subsequent dump to the ground of
telemetry data. Manipulation from the ground has required significant human intervention
and used ad hoc, privately developed protocols.
The introduction of solid state mass memory providing gigabytes of storage with random
access opens up a whole new ethos of spacecraft operation where much of the routine traffic
to and from the spacecraft will be in the form of files. Furthermore, because of the random
access nature of the onboard storage medium, it becomes possible to repeat transmission of
data lost on the link and thus guarantee delivery of critical information.
To exploit the potential advantages of onboard mass memory, protocol support is required to
provide a standard means to move data to and from the onboard storage medium in the form
of files.
While the onboard storage medium has rapidly evolved, the essential constraints of space
missions remain:
– limited systems resources in terms of computational power and memory capacities;
– environmental restrictions including noisy, bandwidth limited, asymmetrical, and
interrupted communications links, some with very long propagation delay;
– varying user needs including a requirement for early access to transferred data regardless
of its quality.
In view of these constraints, it is clear that there is a need for a file delivery service capable of
transferring files to and from mass memory located in the space segment. Such a capability
must not only operate under the constraints associated with space data communication, but it
must also be applicable to the diverse range of mission configurations ranging from single
low earth orbiting spacecraft to complex networks of relays, orbiters, and landers.
Through the process of normal evolution, it is expected that expansion, deletion, or
modification of this document may occur. This Recommendation is therefore subject to
CCSDS document management and change control procedures which are defined in
reference [A1]. Current versions of CCSDS documents are maintained at the CCSDS Web site:
http://www.ccsds.org/
Questions relating to the contents or status of this document should be addressed to the
CCSDS Secretariat at the address indicated on page i.
CCSDS 727.0-B-1 Page iii January 2002
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ISO 17355:2003(E)
CCSDS RECOMMENDATION FOR CCSDS FILE DELIVERY PROTOCOL (CFDP)
At time of publication, the active Member and Observer Agencies of the CCSDS were:
Member Agencies
– Agenzia Spaziale Italiana (ASI)/Italy.
– British National Space Centre (BNSC)/United Kingdom.
– Canadian Space Agency (CSA)/Canada.
– Centre National d’Etudes Spatiales (CNES)/France.
– Deutsches Zentrum für Luft- und Raumfahrt e.V. (DLR)/Germany.
– European Space Agency (ESA)/Europe.
– Instituto Nacional de Pesquisas Espaciais (INPE)/Brazil.
– National Aeronautics and Space Administration (NASA)/USA.
– National Space Development Agency of Japan (NASDA)/Japan.
– Russian Space Agency (RSA)/Russian Federation.
Observer Agencies
– Austrian Space Agency (ASA)/Austria.
– Central Research Institute of Machine Building (TsNIIMash)/Russian Federation.
– Centro Tecnico Aeroespacial (CTA)/Brazil.
– Chinese Academy of Space Technology (CAST)/China.
– Commonwealth Scientific and Industrial Research Organization (CSIRO)/Australia.
– Communications Research Centre (CRC)/Canada.
– Communications Research Laboratory (CRL)/Japan.
– Danish Space Research Institute (DSRI)/Denmark.
– European Organization for the Exploitation of Meteorological Satellites
(EUMETSAT)/Europe.
– European Telecommunications Satellite Organization (EUTELSAT)/Europe.
– Federal Service of Scientific, Technical & Cultural Affairs (FSST&CA)/Belgium.
– Hellenic National Space Committee (HNSC)/Greece.
– Indian Space Research Organization (ISRO)/India.
– Institute of Space and Astronautical Science (ISAS)/Japan.
– Institute of Space Research (IKI)/Russian Federation.
– KFKI Research Institute for Particle & Nuclear Physics (KFKI)/Hungary.
– MIKOMTEK: CSIR (CSIR)/Republic of South Africa.
– Korea Aerospace Research Institute (KARI)/Korea.
– Ministry of Communications (MOC)/Israel.
– National Oceanic & Atmospheric Administration (NOAA)/USA.
– National Space Program Office (NSPO)/Taipei.
– Swedish Space Corporation (SSC)/Sweden.
– United States Geological Survey (USGS)/USA.
CCSDS 727.0-B-1 Page iv January 2002
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ISO 17355:2003(E)
CCSDS RECOMMENDATION FOR CCSDS FILE DELIVERY PROTOCOL (CFDP)
DOCUMENT CONTROL
Document Title Date Status
CCSDS CCSDS File Delivery Protocol, January Original Issue
727.0-B-1 Issue 1 2002
CCSDS 727.0-B-1 Page v January 2002
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ISO 17355:2003(E)
CCSDS RECOMMENDATION FOR CCSDS FILE DELIVERY PROTOCOL (CFDP)
CONTENTS
Section Page
1 INTRODUCTION.1-1
1.1 PURPOSE AND SCOPE.1-1
1.2 APPLICABILITY.1-1
1.3 CONVENTIONS AND DEFINITIONS .1-1
1.4 REFERENCES.1-5
2 OVERVIEW .2-1
2.1 GENERAL.2-1
2.2 ARCHITECTURE ELEMENTS.2-2
2.3 GENERAL CHARACTERISTICS.2-4
2.4 OVERVIEW OF INTERACTIONS .2-7
3 SERVICE DESCRIPTION .3-1
3.1 SERVICES AT THE USER INTERFACE.3-1
3.2 SUMMARY OF PRIMITIVES.3-1
3.3 SUMMARY OF PARAMETERS .3-2
3.4 SERVICES REQUIRED OF THE UNDERLYING
COMMUNICATION SYSTEM .3-6
3.5 CFDP SERVICE PRIMITIVES.3-8
4 PROTOCOL SPECIFICATION .4-1
4.1 PROCEDURES.4-1
5 PDU FORMATS.5-1
5.1 GENERAL.5-1
5.2 FILE DIRECTIVE PDUs.5-4
5.3 FILE DATA PDU .5-11
5.4 TLV PARAMETERS.5-11
6 USER OPERATIONS.6-1
6.1 RESERVED CFDP MESSAGE FORMAT.6-1
6.2 PROXY OPERATION.6-3
6.3 DIRECTORY OPERATIONS.6-9
6.4 REMOTE STATUS REPORT OPERATIONS.6-11
6.5 REMOTE SUSPEND OPERATIONS.6-14
6.6 REMOTE RESUME OPERATIONS .6-17
CCSDS 727.0-B-1 Page vi January 2002
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ISO 17355:2003(E)
CCSDS RECOMMENDATION FOR CCSDS FILE DELIVERY PROTOCOL (CFDP)
CONTENTS (continued)
Section Page
7 CFDP SERVICE CLASSES.7-1
7.1 DEFINED CLASSES.7-1
7.2 FUNCTIONS OF CLASS 1—UNRELIABLE TRANSFER.7-2
7.3 FUNCTIONS OF CLASS 2—RELIABLE TRANSFER .7-5
7.4 FUNCTIONS OF CLASS 3—RELIABLE TRANSFER BY PROXY .7-8
8 MANAGEMENT INFORMATION BASE .8-1
8.1 GENERAL.8-1
8.2 LOCAL ENTITY CONFIGURATION INFORMATION.8-1
8.3 REMOTE ENTITY CONFIGURATION INFORMATION.8-2
ANNEX A INFORMATIVE REFERENCES.A-1
ANNEX B ACRONYMS . B-1
ANNEX C EXAMPLE OF CHECKSUM CALCULATION.C-1
ANNEX D EXTENDED PROCEDURES.D-1
Figure
1-1 Bit Numbering Convention.1-2
1-2 Octet Convention .1-2
2-1 Architectural Elements of the File Delivery Protocol.2-2
2-2 CFDP Procedures.2-4
2-3 Copy Operations, Sequence of Events .2-7
2-4 Put Operations, Sequence of Events .2-8
2-5 Proxy Put Operations, Sequence of Events.2-8
Table
5-1 Fixed PDU Header Fields .5-1
5-2 LV Object Format .5-2
5-3 TLV Object Format.5-3
5-4 File Directive Codes.5-4
5-5 Condition Codes.5-5
5-6 End-of-File PDU Contents.5-5
5-7 Finished PDU Contents.5-6
5-8 ACK PDU Contents .5-8
5-9 Metadata PDU Contents.5-9
5-10 NAK PDU Contents.5-10
5-11 Segment Request Form .5-10
5-12 Prompt PDU Contents.5-10
CCSDS 727.0-B-1 Page vii January 2002
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ISO 17355:2003(E)
CCSDS RECOMMENDATION FOR CCSDS FILE DELIVERY PROTOCOL (CFDP)
CONTENTS (continued)
Table Page
5-13 Keep Alive PDU Contents .5-11
5-14 File Data PDU Contents.5-11
5-15 Filestore Request TLV Contents.5-11
5-16 Filestore Request TLV Action Codes .5-12
5-17 Filestore Response TLV Contents.5-12
5-18 Filestore Response Status Codes.5-13
5-19 Fault Handler Override Field Encoding.5-14
6-1 Reserved CFDP Message Header .6-1
6-2 Originating Transaction ID Message .6-2
6-3 Proxy Operations Message Types .6-3
6-4 Remote Put Order Message.6-4
6-5 Remote Message to User Message.6-4
6-6 Remote Filestore Request Message.6-5
6-7 Remote Fault Handler Override Message .6-5
6-8 Remote Transmission Mode Message .6-5
6-9 Remote Flow Label Message .6-6
6-10 Remote Segmentation Control Message .6-6
6-11 Remote Put Finished Message .6-7
6-12 Remote Filestore Response Message .6-8
6-13 Directory Operations Message Types .6-9
6-14 Directory Listing Request Message.6-9
6-15 Directory Listing Response Message .6-10
6-16 Remote Status Report Operations Message Types.6-11
6-17 Remote Status Report Request Message.6-12
6-18 Remote Status Report Response Message .6-13
6-19 Remote Suspend Operations Message Types.6-14
6-20 Remote Suspend Request Message.6-15
6-21 Remote Suspend Response Message .6-16
6-22 Remote Resume Operations Message Types .6-17
6-23 Remote Resume Request Message.6-18
6-24 Remote Resume Response Message .6-19
7-1 Class 1 Source Procedures .7-2
7-2 Class 1 Destination Procedures.7-3
7-3 Class 2 Source Procedures .7-5
7-4 Class 2 Destination Procedures.7-6
7-5 Class 3 Beneficiary Procedures.7-8
7-6 Class 3 Respondent Procedures .7-8
7-7 Class 3 Originator Procedures.7-9
8-1 Local Entity Configuration Information.8-1
8-2 Remote Entity Configuration Information .8-2
CCSDS 727.0-B-1 Page viii January 2002
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ISO 17355:2003(E)
CCSDS RECOMMENDATION FOR CCSDS FILE DELIVERY PROTOCOL (CFDP)
1 INTRODUCTION
1.1 PURPOSE AND SCOPE
This document defines a CCSDS File Delivery Protocol (CFDP) and associated service for
application in the space environment. It is intended for use over the current and envisaged
packet delivery services used in the space environment including:
– CCSDS conventional packet telecommand;
– CCSDS conventional packet telemetry;
– CCSDS Advanced Orbiting Systems (AOS) Path service.
In may also operate over a wide variety of ground network services including those specified
by the CCSDS for cross-support purposes.
The protocol operates in the space-to-ground, ground-to-space, and space-to-space directions
of transfer. It may be initiated by the file sending or receiving entity.
In the interests of interoperability, protocol elements are included for generalized forms of
standard file manipulation operations based on assumptions of a common model for a
‘filestore’, or medium used to store files. It is recognized, however, that the precise nature
and capabilities of filestore management systems are operating-system dependent and, for
that reason, the protocol assumes a virtual filestore and associated services that an
implementation must map to the capabilities of the actual filestore used.
1.2 APPLICABILITY
This Recommendation specifies a protocol and associated services that are applicable to
space missions with continuous duplex contact, intermittent duplex contact, asymmetrical
time-disjunct contact, and simplex contact.
1.3 CONVENTIONS AND DEFINITIONS
1.3.1 BIT NUMBERING CONVENTION AND NOMENCLATURE
In this document, the following convention is used to identify each bit in an N-bit field. The
first bit in the field to be transmitted (i.e., the most left justified when drawing a figure) is
defined to be ‘Bit 0’; the following bit is defined to be ‘Bit 1’ and so on up to ‘Bit N–1’.
When the field is used to express a binary value (such as a counter), the Most Significant Bit
(MSB) shall be the first transmitted bit of the field, i.e., ‘Bit 0’.
CCSDS 727.0-B-1 Page 1-1 January 2002
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ISO 17355:2003(E)
CCSDS RECOMMENDATION FOR CCSDS FILE DELIVERY PROTOCOL (CFDP)
BIT 0 BIT N-1
N-BIT DATA FIELD
FIRST BIT TRANSMITTED = MSB
Figure 1-1: Bit Numbering Conventi
...
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