Unformatted text preview: ssigned Number Authority. http://sanaregistry.org/r/.  CCSDS Global Spacecraft Identification Field Code Assignment Control Procedures.
Recommendation for Space Data System Standards, CCSDS 320.0-B-3. Blue Book.
Issue 3. Washington, D.C.: CCSDS, April 2003.  Space Packet Protocol. Recommendation for Space Data System Standards, CCSDS
133.0-B-1. Blue Book. Issue 1. Washington, D.C.: CCSDS, September 2003. NOTE – Informative references are listed in annex B. CCSDS 132.0-B-1 Cor.1 Page 1-5 September 2003
September 2012 CCSDS RECOMMENDATION FOR TM SPACE DATA LINK PROTOCOL 2
CONCEPT OF TM SPACE DATA LINK PROTOCOL 2.1.1 ARCHITECTURE
The TM Space Data Link Protocol is a Data Link Layer protocol (see reference ) to be
used by space missions. This protocol has been designed to meet the requirements of space
missions for efficient transfer of space application data of various types and characteristics
over space-to-ground or space-to-space communications links (hereafter called space links).
Figure 2-1 illustrates the relationship of this protocol to the Open Systems Interconnection
(OSI) reference model (reference ). Two sublayers of the Data Link Layer are defined for
CCSDS space link protocols as shown in reference [B4]. The TM Space Data Link Protocol
corresponds to the Logical Link Sublayer, and provides functions of transferring various data
using a fixed-length protocol data unit called the Transfer Frame. The Synchronization and
Channel Coding Sublayer provides some additional functions necessary for transferring
Transfer Frames over a space link. These functions are delimiting/synchronizing Transfer
Frames, error-correction coding/decoding (optional), and bit transition generation/removal
(optional). For the Synchronization and Channel Coding Sublayer, the TM Synchronization
and Channel Coding Recommendation (reference ) must be used with the TM Space Data
Link Protocol. How the TM Space Data Link Protocol is used in overall space data systems
is shown in reference [B4].
OSI LAYERS CCSDS LAYERS NETWORK AND
UPPER LAYERS NETWORK AND
UPPER LAYERS CCSDS
PROTOCOLS DATA LINK
SUBLAYER TM SPACE DATA LINK
CODING SUBLAYER TM SYNCH...
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