132x0b1c1

Info iconThis preview shows page 1. Sign up to view the full content.

View Full Document Right Arrow Icon
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: The Master Channel Demultiplexing Function shall examine the MCID in the incoming stream of Transfer Frames and shall route them to the instances of the Master Channel Reception Function and, if present, to the Master Channel Frame Service users. NOTES 1 If a gap in the Master Channel Frame Count is detected, a Loss Flag is optionally delivered to the users. 2 Transfer Frames with an invalid MCID are discarded. 4.3.6.3 An abstract model of the Master Channel Demultiplexing Function is illustrated in figure 4-17. CCSDS 132.0-B-1 Page 4-26 September 2003 CCSDS RECOMMENDATION FOR TM SPACE DATA LINK PROTOCOL MC Reception Function MC Frame Service User MC Frames Master Channel Demultiplexing Function for a Physical Channel MC Frames Demultiplexing All Frames All Frames Reception Function Figure 4-17: Abstract Model of Master Channel Demultiplexing Function 4.3.7 ALL FRAMES RECEPTION FUNCTION 4.3.7.1 The All Frames Reception Function shall be used to perform error control decoding defined by this Recommendation. NOTE – There is an instance of the All Frames Reception Function for each Physical Channel. 4.3.7.2 If the Frame Error Control Field is present in the Transfer Frame, the All Frames Reception Function shall recompute the CRC value for the Transfer Frame and compare it to the content of the Frame Error Control Field to determine if the Transfer Frame contains a detected error. NOTE – A Transfer Frame which contains a detected error is not required to be delivered in cross support situations. 4.3.7.3 An abstract model of the All Frames Reception Function is illustrated in figure 4-18. CCSDS 132.0-B-1 Page 4-27 September 2003 CCSDS RECOMMENDATION FOR TM SPACE DATA LINK PROTOCOL MC Demux. Function All Frames All Frames Reception Function for a Physical Channel Error Control Decoding All Frames Coding Sublayer Figure 4-18: Abstract Model of All Frames Reception Function CCSDS 132.0-B-1 Page 4-28 September 2003 CCSDS RECOMMENDATION FOR TM SPACE DATA LINK PROTOCOL 5 MANAGED PARAMETERS NOTE...
View Full Document

This document was uploaded on 03/06/2014.

Ask a homework question - tutors are online