ISO 22646-2005 amd1-2015 PDF

Full title and description

ISO 22646:2005 — Space data and information transfer systems — Space packet protocol, amended by ISO 22646:2005/Amd 1:2015. The amendment (Amd 1:2015) introduces a change/correction to the original 2005 protocol text and is published as Amendment 1 (2015) to the International Standard that defines the CCSDS-derived Space Packet Protocol for transferring space application data over ground-to-space and space-to-space links.

Abstract

ISO 22646:2005 specifies the Space Packet Protocol used to encapsulate and transport space application data across networks and space links. The protocol defines packet structures (primary and optional secondary headers), addressing (APIDs and Path IDs), sequencing, routing and basic error/validity checks required for interoperability between spacecraft, ground stations and intermediate routing elements. ISO 22646:2005/Amd 1:2015 is a one-page amendment that updates or corrects specific elements of the original 2005 publication without replacing the full standard.

General information

• Status: Published (base standard and Amendment 1 published).
• Publication date: ISO 22646:2005 published July 2005; ISO 22646:2005/Amd 1:2015 published 9 July 2015.
• Publisher: ISO (International Organization for Standardization), prepared by ISO/TC 20/SC 13.
• ICS / categories: 49.140 — Space systems and operations (space data/information transfer systems).
• Edition / version: Edition 1 — ISO 22646:2005 with Amendment 1 (2015) (designation: ISO 22646:2005/Amd 1:2015).
• Number of pages: Base standard: approximately 43–55 pages (published 2005); Amendment 1 (2015): 1 page (technical change/correction).

Scope

This standard defines the Space Packet Protocol used to transfer space application data over networks that include ground-to-space and space-to-space communications links. It specifies packet formats (primary and optional secondary headers and user data fields), the services provided to user applications, procedures for packet generation and processing, addressing and routing identifiers, sequence control and basic validation checks. The amendment provides targeted corrections or clarifications to the original text without changing the overall scope.

Key topics and requirements

• Definition of the Space Packet structure: primary header, optional secondary header and user data field.
• Application Process Identifier (APID) and Path ID usage for application-level addressing and routing.
• Packet sequence control and fragmentation/continuation rules for ordered delivery and assembly.
• Service primitives and protocol services offered to user applications (packet generation, acceptance, delivery).
• Basic validation and error handling rules to ensure packet integrity and interoperability.
• Mapping and routing considerations across heterogeneous subnetworks and ground/space segments.
• Clarifications and corrections introduced by Amendment 1 (2015) to align text with operational practice or CCSDS references.

Typical use and users

The standard is used by space agencies, spacecraft manufacturers, payload integrators, ground segment developers, mission system engineers and software teams implementing telemetry/telecommand and onboard data handling systems. Typical applications include telemetry framing and routing, onboard data buses, ground-station packet processing, inter-satellite links, mission operations software and mission-unique protocol stacks that interoperate with CCSDS-derived packet formats.

Related standards

ISO 22646 is closely related to CCSDS Space Packet Recommendations (the ISO text is derived from CCSDS work). Related standards and documents commonly used together include CCSDS space data link and file-transfer recommendations (e.g., CCSDS Space Packet documents and the CCSDS File Delivery Protocol), and other ISO/CCSDS standards that cover higher- and lower-layer space communications functions such as link-layer and transport-layer recommendations used in mission implementations.

Keywords

Space packet protocol, CCSDS, APID, Path ID, telemetry, telecommand, space communications, packet format, space data transfer, ISO 22646, amendment 2015.

FAQ

Q: What is this standard?

A: ISO 22646:2005 is an international standard that defines the Space Packet Protocol for transferring space application data; ISO 22646:2005/Amd 1:2015 is a one-page amendment (published 9 July 2015) providing corrections or clarifications to the 2005 text.

Q: What does it cover?

A: It covers packet formats (primary and optional secondary headers), addressing (APIDs/Path IDs), sequence control, routing considerations, services offered to user applications and basic validation procedures needed to move application data across ground-to-space and space-to-space links.

Q: Who typically uses it?

A: Space agencies, satellite manufacturers, mission system engineers, ground station developers, avionics and onboard software teams, and contractors implementing CCSDS-compatible packet-handling and mission data systems.

Q: Is it current or superseded?

A: The original standard was published in July 2005 and confirmed with an amendment issued 9 July 2015 (ISO 22646:2005/Amd 1:2015). Users should check national or ISO catalogs for the latest status or any further revisions beyond 2015 before selecting a normative edition for procurement or implementation.

Q: Is it part of a series?

A: Yes — ISO 22646 implements a protocol that is part of the broader family of CCSDS/ISO space data and information transfer recommendations. It is typically used alongside other CCSDS and ISO standards that define link-layer, file transfer (e.g., CFDP/ISO equivalents), and mission-specific communications functions.

Q: What are the key keywords?

A: Space packet, packet protocol, CCSDS, APID, telemetry, telecommand, space communications, ISO 22646, amendment.