Unformatted text preview: mendation, Packets with any Packet Version Number can be
transferred as Packets as long as their Packet Version Number is authorized by CCSDS.
C2.2 MULTIPLEXING AND DEMULTIPLEXING OF PACKETS WITH
DIFFERENT APIDS In reference [B3] Packets with different APIDs are multiplexed and demultiplexed by the
Data Link Layer. However, since the APID does not belong to the Data Link Layer, it is
assumed in this Recommendation that Packets with different APIDs are multiplexed and
demultiplexed by the Space Packet Protocol.
C2.3 MASTER CHANNEL FRAME SERVICE In reference [B2] it is possible to multiplex Transfer Frames of different Master Channels on
a physical channel, but no service is explicitly defined for transferring Transfer Frames of a
Master Channel in reference [B3]. This Recommendation specifies a service for transferring
Transfer Frames of a Master Channel, which is called the Master Channel Frame Service.
C2.4 PARAMETERS OF SERVICE PRIMITIVES In order to define the service primitives of all Space Data Link Protocols in a unified way,
some parameters of some service primitives of reference [B3] have been changed. CCSDS 132.0-B-1 Page C-1 September 2003 CCSDS RECOMMENDATION FOR TM SPACE DATA LINK PROTOCOL C3 TERMINOLOGY CHANGES Table C-1 list the terms that have been changed from reference [B3].
Table C-1: Mapping of Terms of Reference [B3] That Have Been Redefined
Terms Used in Reference [B3] Terms Used in This
Recommendation Packet Transfer Service Packet Service Privately Defined Data Transfer
Service Virtual Channel Access Service CCSDS 132.0-B-1 Page C-2 September 2003...
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- Spring '14
- Space Exploration, European Space Agency, Protocol data unit