Telemetry Standards, RCC Standard 106-20 Chapter 7, Packet Telemetry Downlink

Abstract

This standard defines the method for transporting variable-length, well-defined data formats in a Chapter 4 pulse code modulation (PCM) stream. Packet telemetry defines the method for asynchronously inserting data from one or more data streams into PCM minor frames. This standard defines various source packet (SP) types that are used to encapsulate well-defined data formats, including: Chapter 11 packets; Chapter 24 TmNSMessages; Ethernet frames. An SP is encapsulated into an integral number of encapsulation packets (EPs); nominally each EP contains only one SP. Different SP types may be multiplexed simultaneously into a single, logical stream of EPs. The encapsulation packet stream is then segmented into fixed-length transport packets (TPs), each of which is inserted into a single PCM minor frame. While a TP may be segmented and interspersed with PCM data within a PCM minor frame, each PCM minor frame shall contain only one TP. A low-latency encapsulation packet (LLEP) mechanism allows for the insertion of one or more EPs with low-latency requirements into the transmission of a long EP. Specific structure-critical elements are protected using a Golay code; see Appendix 7-A for details.

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Document Details

Document Type
Technical Report
Publication Date
Jul 16, 2020
Accession Number
AD1103902

Tags

DTIC Thesaurus Topics

  • Coding
  • Computer Access Control
  • Computer Programming
  • Computer Vision
  • Decoding
  • Encapsulation
  • Ethernet
  • Fragmentation
  • Internet
  • Modulation
  • Multiplexing
  • Network Protocols
  • Pulse Code Modulation
  • Segmented
  • Sequences
  • Standards
  • Telemetry

Fields of Study

  • Computer science

Readers

  • Business Analytics
  • Computer Networking
  • Radio communications and signal processing.