Overview

ISO 22663:2015 - Proximity-1 space link protocol - Data Link Layer defines the data-link-level behavior for short-range spacecraft communications (proximity links). Published by ISO and prepared by CCSDS (as CCSDS 211.0-B-5), the standard specifies the Data Link Layer structure including framing, medium access control (MAC), data services, and input/output (I/O) sublayers. It defines protocol data units, framing formats (including the Version‑3 transfer frame), expedited and sequenced data transfer, timing services, I/O control, and session establishment/termination procedures between a caller and responder. The Coding & Synchronization Sublayer and the Physical Layer are specified in separate CCSDS standards.

Key topics and requirements

Framing and Protocol Data Units: Definitions of transfer frames (Version‑3 transfer frame) and header/data field organization for reliable proximity transfers.
Medium Access Control (MAC): Rules for medium access in proximity environments to coordinate link sharing and avoid collisions.
Data Services: Support for expedited (urgent) and sequenced-controlled data transfers, with procedures for sending/receiving operations and error handling.
Input/Output (I/O) Sublayer: Interfaces and control for data I/O operations between higher layers and the data link.
Timing Services: Time-tag recording, time correlation, and mechanisms to transfer time information to remote assets (important for synchronized operations).
Session Management: Procedures and state diagrams for establishing, maintaining and terminating sessions between caller and responder (full duplex, half duplex, simplex modes).
Conformance & Management: Includes Protocol Implementation Conformance Statement (PICS) proforma and normative annexes for implementers.
Standards Scope Limits: ISO 22663:2015 does not specify specific implementations, service interface implementations, underlying technologies for procedures, or management/configuration activities.

Applications

ISO 22663:2015 is targeted at proximity space links used in:

Orbiter-to-lander/rover communications during descent, landing, and surface operations
Rendezvous, docking, and close-proximity servicing missions
Short-range inter-satellite links and formation flying where near-field data exchange and time correlation are required
Ground-to-spacecraft proximity test and verification scenarios

Who uses this standard

Spacecraft systems and communications engineers
Mission architects and planners for robotic and human spaceflight proximity operations
Satellite and probe manufacturers integrating proximity communication subsystems
Ground segment and operations teams responsible for link configuration and interoperability

Related standards

CCSDS Proximity-1 Coding and Synchronization Sublayer (separate document)
CCSDS Proximity-1 Physical Layer (separate document)
Other CCSDS Blue Books referenced for interoperability and protocol stack alignment

Keywords: ISO 22663:2015, Proximity-1 space link protocol, data link layer, space communications, CCSDS, framing, medium access control, timing services, transfer frame, proximity links.

Overview

Key topics and requirements

Framing and Protocol Data Units: Definitions of transfer frames (Version‑3 transfer frame) and header/data field organization for reliable proximity transfers.
Medium Access Control (MAC): Rules for medium access in proximity environments to coordinate link sharing and avoid collisions.
Data Services: Support for expedited (urgent) and sequenced-controlled data transfers, with procedures for sending/receiving operations and error handling.
Input/Output (I/O) Sublayer: Interfaces and control for data I/O operations between higher layers and the data link.
Timing Services: Time-tag recording, time correlation, and mechanisms to transfer time information to remote assets (important for synchronized operations).
Session Management: Procedures and state diagrams for establishing, maintaining and terminating sessions between caller and responder (full duplex, half duplex, simplex modes).
Conformance & Management: Includes Protocol Implementation Conformance Statement (PICS) proforma and normative annexes for implementers.
Standards Scope Limits: ISO 22663:2015 does not specify specific implementations, service interface implementations, underlying technologies for procedures, or management/configuration activities.

Applications

ISO 22663:2015 is targeted at proximity space links used in:

Orbiter-to-lander/rover communications during descent, landing, and surface operations
Rendezvous, docking, and close-proximity servicing missions
Short-range inter-satellite links and formation flying where near-field data exchange and time correlation are required
Ground-to-spacecraft proximity test and verification scenarios

Who uses this standard

Spacecraft systems and communications engineers
Mission architects and planners for robotic and human spaceflight proximity operations
Satellite and probe manufacturers integrating proximity communication subsystems
Ground segment and operations teams responsible for link configuration and interoperability

Related standards

CCSDS Proximity-1 Coding and Synchronization Sublayer (separate document)
CCSDS Proximity-1 Physical Layer (separate document)
Other CCSDS Blue Books referenced for interoperability and protocol stack alignment

Keywords: ISO 22663:2015, Proximity-1 space link protocol, data link layer, space communications, CCSDS, framing, medium access control, timing services, transfer frame, proximity links.

ISO 22663:2015 PDF

Technical details

Abstract

Overview

Key topics and requirements

Applications

Who uses this standard

Related standards

Related standards

Abstract

Overview

Key topics and requirements

Applications

Who uses this standard

Related standards

Related standards

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