[CESG-All] CCSDS Review of CCSDS 211.1-P-4.2 - Proximity-1 Space Link Protocol—Physical Layer

[Oliver, Brian H. (HQ-CG000)[Agile Decision Sciences]]

The following draft CCSDS Recommended Standard has been placed online for CCSDS Agency review:

CCSDS 211.1-P-4.2 - Proximity-1 Space Link Protocol—Physical Layer. Pink Book. Issue 4.2 April 2026.

DOCUMENT DESCRIPTION:  The purpose of this Recommended Standard is to specify Physical Layer (PL) procedures used with the Proximity-1 Data Link Layer (DLL). Proximity space links are defined to be short-range, bi-directional, fixed or mobile radio links, generally used to communicate among probes, landers, rovers, orbiting constellations, and orbiting relays. These links are characterized by short time delays, moderate (not weak) signals, and short, independent sessions.

REMINDER:  Agency Heads of Delegation are to make their own arrangements for review participation by their Agency-sponsored Associates.

The review document, in Portable Document Format (PDF), and associated review materials are available for downloading at the following location:

https://ccsds.org/review/ccsds-211-1-p-4-2/

NOTES

1  Per CMC Action Item CMC-A-2007-10-05, agency reviewers are reminded to
   review for compliance with the CCSDS Publications Manual, as well as
   technical content.

2  Per CESG Resolution CESG-R-2008-10-006, the CESG no longer conducts
   pre-Agency-review reviews, but is instead expected to participate in
   Agency reviews when they are announced.

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Brian Oliver
Web Developer
Space Communications and Navigation
Agile Decision Sciences
7000 Muirkirk Meadows Dr. Beltsville, MD 20707
M: 937.499.4591
brian.h.oliver at nasa.gov<mailto:brian.h.oliver at nasa.gov>

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