This preview shows page 1. Sign up to view the full content.
Unformatted text preview: ly) also cancel ongoing processes
for Type-AD and BC Transfer Frames in the Channel Coding and
The following signal shall be issued by the Lower Procedures to FOP-1 (the items in
parentheses are parameters of the signal):
Response (GVCID, Response Type).
The ‘Response’ signal shall be used for the purpose of flow control between FOP-1 and the
Lower Procedures, and shall be issued by the Lower Procedures for every Transfer Frame
given by FOP-1 when the Transfer Frames have been accepted or rejected.
The values of the parameter ‘Response Type’ are:
a) AD_Accept (when a Type-AD Transfer Frame is accepted);
b) AD_Reject (when a Type-AD Transfer Frame is rejected);
c) BC_Accept (when a Type-BC Transfer Frame is accepted);
d) BC_Reject (when a Type-BC Transfer Frame is rejected);
e) BD_Accept (when a Type-BD Transfer Frame is accepted);
f) BD_Reject (when a Type-BD Transfer Frame is rejected).
3.3.1 INTER-PROCEDURE INTERFACES AT THE RECEIVING END
INTERNAL ORGANIZATION OF PROTOCOL ENTITY NOTE – Figure 3-2 shows the internal organization of the TC Space Data Link Protocol
entity at the receiving end, together with the interfaces with the other protocols
used with the TC Space Data Link Protocol. In figure 3-2, the set of procedures
performed below FARM-1 is collectively called the Lower Procedures, and the
set of procedures performed above FARM-1 is collectively called the Higher
Procedures. CCSDS 232.1-B-2 Page 3-6 September 2010 RECOMMENDED STANDARD FOR COMMUNICATIONS OPERATION PROCEDURE-1 User (Higher Layer Protocol)
Service Data Units
TC Data Link
Frame Acceptance and Reporting
Lower Procedures CLCWs Protocol Used in the
Opposite Direction Transfer Frames
Channel Coding and Synchronization Figure 3-2: Internal Organization of Protocol Entity (Receiving End)
The Lower Procedures shall perform the Frame Validation Check against Transfer Frames
received from the underlying entity of Channel Coding and Synchronization, demultiplex
View Full Document
- Spring '14