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GB/T 42038-2022Space data and information transfer systems - File delivery protocol (English PDF)

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Issued by

State Administration for Market Regulation, China National Standardization Administration

Level / Type

National · Recommended

Issue date

October 12, 2022

Implementation date

October 12, 2022

Scope

GB/T 42038-2022 (Space data and information transfer systems - File delivery protocol) is available as an English-translated PDF.

GB/T 42038-2022 is the Chinese standard "Space data and information transfer systems - File delivery protocol".

Its scope clause reads: This document specifies the business definition, protocol procedures, protocol data unit format, User operations, business categories, and management information base, etc. This document is applicable to the file transfer from the spacecraft to the ground, from the ground to the spacecraft, and between spacecraft, and supports the file storage of the spacecraft.

Perform operations such as upload, download and control. Its clauses include terms and definitions.

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Document preview — GB/T 42038-2022

National Standard of the People's Republic of China

ICS
49.140
Classification
V 75

Issued by: State Administration for Market Regulation, China National Standardization Administration

Contents

  • Preface
  • 1 Scope
  • 2 Normative references
  • 3 Terms and Definitions
  • 4 Abbreviations
  • 5 General
  • 5.1 Overview
  • 5.2 Structural Composition
  • 5.3 Protocol Features
  • 5.4 Interaction conventions
  • 6 business
  • 6.1 User Interface Services
  • 6.2 Primitives
  • 6.3 Parameter description
  • 6.4 Business Primitives
  • 6.5 Required UT layer services
  • 7 protocol procedures
  • 7.1 CRC procedure
  • 7.2 Checksum procedure
  • 7.3 Submission procedures
  • 7.4 Transaction start notification procedure
  • 7.5 PDU forwarding procedures
  • 7.6 Document copying procedures
  • 7.7 ACK procedure
  • 7.8 Error Handling Procedure
  • 7.9 Document storage procedures
  • 7.10 Inactivity Monitoring Procedure
  • 7.11 Internal procedures
  • 7.12 Link state change procedure
  • 8 Protocol data unit format
  • 8.1 Bit number convention
  • 8.2 General requirements
  • 8.3 File command PDU
  • 8.4 File Data PDU
  • 8.5 TLV parameters
  • 9 User Operations
  • 9.1 Reserved message format
  • 9.2 Proxy operation
  • 9.3 Directory operations
  • 9.4 Remote Status Report Operation
  • 9.5 Remote suspend operation
  • 9.6 Remote Recovery Operation
  • 10 business categories
  • 10.1 Business category definition
  • 10.2 Unreliable transport
  • 10.3 Reliable Transport
  • 11 Management Information Base
  • Appendix A (informative) store-and-forward override operations
  • Appendix B (informative) checksum calculation example

1 Scope

This document specifies the business definition, protocol procedures, protocol data unit format,

User operations, business categories, and management information base, etc.

This document is applicable to the file transfer from the spacecraft to the ground, from the ground to the spacecraft, and between spacecraft, and supports the file storage of the spacecraft.

Perform operations such as upload, download and control.

2 Normative references

The contents of the following documents constitute the essential provisions of this document through normative references in the text. Among them, dated references

For documents, only the version corresponding to the date is applicable to this document; for undated reference documents, the latest version (including all amendments) is applicable to this document.

GB/T 39350 Spatial Data and Information System Remote Spatial Data Link Protocol

GB/T 42041 Terminology for Space Data and Information Transmission in Aerospace

3 Terms and Definitions

The following terms and definitions defined in GB/T 42041 apply to this document.

3.1 protocol entity

A concrete implementation instance of a file transfer protocol, similar to an Internet Protocol host.

3.2 metadata

Data that defines and describes other data.

3.3 Protocol data unit

Independent, bounded, self-identifying data transmitted between protocol entities.

Note. There are two types of file data and file instructions.

3.4 transaction

A uniquely identifiable file transfer unit (FDU) end-to-end transfer between two protocol entities.

NOTE. Typically involves the transmission and reception of multiple Protocol Data Units (PDUs).

3.5 file storage filestore

The medium used to store files.

3.6 offset

The number of data bytes preceding a particular byte in the file data.

GB/T 43223 | GB/T 32453 | GB/T 42040 | GB/T 42039 | […]

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This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 131 pages — is available in the English PDF.

Referenced standards

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