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GB/T 39350-2020Space data and information transfer systems. TC (telecommand) space data link protocol (English PDF)

Also coversGBT39350-2020

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Issued by

State Administration for Market Regulation, China National Standardization Administration

Level / Type

National · Recommended

Issue date

November 19, 2020

Implementation date

June 1, 2021

Scope

GB/T 39350-2020 (Space data and information transfer systems. TC (telecommand) space data link protocol) is available as an English-translated PDF.

GB/T 39350-2020 — This standard specifies the business, data unit format, protocol process, management parameters, and support space data of the remote control space data link protocol. According to the protocol procedures of the link security protocol. This standard applies to remote data transmission from earth stations to spacecraft, and between spacecraft and spacecraft.

Document preview — GB/T 39350-2020

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

1 Scope1
2 Normative references1
3 Terms and definitions1
4 Abbreviations1
5 Overview2
5.1 Protocol Concept2
5.2 Business Overview4
5.3 Function overview6
6 Business Definition9
6.1 Overview9
6.2 Business Data Unit9
6.3 Multiple Access Point Package (MAPP) Service10
6.4 Virtual Channel Package (VCP) Service11
6.5 Multiple Access Point Access (MAPA) Service12
6.6 Virtual Channel Access (VCA) Service13
6.7 Virtual Channel Frame (VCF) Service14
6.8 Main Channel Frame (MCF) Service15
6.9 Communication Operating Procedure (COP) Management Service15
7 Protocol data unit format16
7.1 Convention of bit number16
7.2 Remote control transmission frame format17
7.3 Communication Link Control Word (CLCW)22
8 Agreement process24
8.1 Sender protocol flow24
8.2 Receiver protocol flow30
9 Management parameters36
9.1 Overview36
9.2 Physical channel management parameters36
9.3 Main channel management parameters37
9.4 Virtual channel management parameters37
9.5 MAP management parameters38
9.6 Packet transfer management parameters38
10 Support SDLS agreement38
10.1 Overview38
10.2 SDLS protocol format specification39
10.3 The sender protocol flow with SDLS40
10.4 Receiving end protocol flow with SDLS41
10.5 Management parameters added by SDLS service42
Appendix A (informative appendix) Structural changes of this standard compared with ISO 22664.201643
Appendix B (informative appendix) Technical differences between this standard and ISO 22664.2016 and the reasons45
Figure 1 Correspondence between this agreement and the OSI model Figure3
Figure 2 Relationship between channels4
Figure 3 The internal composition of the sender protocol entity7
Figure 4 The internal composition of the receiving end protocol entity7
Figure 5 Remote control space data link protocol channel tree8
Figure 6 Convention of digit serial number17
Figure 7 Remote control transmission frame structure17
Figure 8 Transmission frame leading header structure18
Figure 9 Segment header format20
Fig. 10 Frame error control coding logic block diagram21
Figure 11 Block diagram of frame error control decoding logic22
Figure 12 CLCW composition Figure22
Figure 13 The abstract model of MAPP processing function25
Figure 14 MAPP processing flow example25
Figure 15 Abstract model of MAP generation function26
Figure 16 MAP generation process example26
Figure 17 Abstract model of MAP multiplexing function27
Figure 18.Abstract model of virtual channel packet processing function27
Figure 19 Example of virtual channel packet processing flow28
Figure 20 Abstract model of virtual channel generation function28
Figure 21 Abstract model of virtual channel multiplexing function29
Figure 22 Abstract model of main channel multiplexing function30
Figure 23 Abstract model of all frame generation functions30
Figure 24 Abstract model of MAPP extraction function31
Figure 25 Abstract model of MAP receiving function31
Figure 26 Abstract model of MAP demultiplexing function32
Figure 27 Abstract model of virtual channel packet extraction function33
Figure 28 Abstract model of virtual channel receiving function33
Figure 29 Abstract model of virtual channel demultiplexing function34
Figure 30 Abstract model of main channel demultiplexing function35
Figure 31 Abstract model of all frame receiving functions35
Figure 32 Schematic diagram of the SDLS field of a class D transmission frame (with segment header)39
Figure 33.Schematic diagram of the SDLS field of a Type D transmission frame (without segment header)39
Table 1 Services provided by remote control space data link protocol5
Table 2 Description of bypass and control command identification18
Table 3 Meaning of sequence flags20
Table 4 Physical channel management parameters36
Table 5 Main channel management parameters37
Table 6 Virtual channel management parameters37
Table 7 MAP management parameters38
Table 8 Management parameters of packet transmission38
Table 9 Additional management parameters for virtual channels (without segment headers) using SDLS42
Table 10 Additional management parameters of MAP using SDLS42
Table A.1 Differences between this standard and ISO 22664.2016 chapter structure43
Table B.1 Technical differences between this standard and ISO 22664.2016 and the reasons45

Foreword

This standard was drafted in accordance with the rules given in GB/T 1.1-2009.

This standard uses the redrafting law to amend and adopt ISO 22664.2016 "Space Data and Information Transmission System Remote Control Space Data Link"

Road Agreement.

Compared with ISO 22664.2016, this standard has many structural adjustments. Appendix A lists the differences between this standard and ISO 22664.2016.

A list of chapter number comparisons.

Compared with ISO 22664.2016, this standard has technical differences, and the clauses involved in these differences have been passed in the margin position on the outer side of the standard.

The vertical single line (︱) is marked, and a list of the corresponding technical differences and their reasons is given in Appendix B.

This standard also made the following editorial changes.

---Deleted part of the references to the principle definition document structure in Chapter 1 of ISO 22664.2016;

--- Changed Appendix A "Abbreviations" in ISO 22664.2016 to Chapter 4 of the main text;

---The informative appendix B "References" of ISO 22664.2016 is deleted.

This standard was proposed and managed by the National Aerospace Technology and Application Standardization Technical Committee (SACTC425).

Drafting organizations of this standard. China Aerospace Standardization Institute, Beijing Space Vehicle General Design Department, Anhui Deqi Information Technology Co., Ltd.

Division, Beijing Institute of Telemetry Technology, Beijing Institute of Tracking and Communication Technology.

1 Scope

This standard specifies the business, data unit format, protocol process, management parameters, and support space data of the remote control space data link protocol.

According to the protocol procedures of the link security protocol.

This standard applies to remote data transmission from earth stations to spacecraft, and between spacecraft and spacecraft.

2 Normative references

The following documents are indispensable for the application of this document. For dated reference documents, only the dated version applies to this document.

For undated references, the latest version (including all amendments) applies to this document.

GB/T 2900.54 Electrotechnical terminology radio communication. transmitter, receiver, network and operation (GB/T 2900.54-2002, IEC 60050-713.1998, IDT)

GB/T 39349 Spatial data and information transmission system remote synchronization and channel coding (GB/T 39349-2020, ISO 22642.2012, MOD)

GB/T 39351 Spatial Data and Information Transmission System Telemetry Spatial Data Link Protocol (GB/T 39351-2020, ISO 22645.2016, MOD)

3 Terms and definitions

The following terms and definitions defined in GB/T 2900.54 and GB/T 39351 apply to this document.

3.1

package

A basic data unit composed of application data plus packet header.

Note. Packet service transmission via virtual channel or multiple access points.

3.2

Remote transmission frame

A protocol data unit oriented to the transmission process suitable for transmitting remote control data.

Note. The remote control transmission frame provides a data structure for the transmission package or custom data.

4 Abbreviations

The following abbreviations apply to this document.

CCSDS. Spatial Data System Advisory Committee

CLCW. Communication link control word

COP. Communication operating procedures

CRC. Cyclic Redundancy Check

FARM. Frame acceptance and reporting mechanism

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

Referenced standards

Normative references

GB/T 2900.54 · GB/T 2900.54-2002 · IEC 60050 · GB/T 39349 · GB/T 39349-2020 · ISO 22642.2012 · GB/T 39351 · GB/T 39351-2020 · ISO 22645.2016

Cited by

GB/T 42038-2022Space data and information transfer systems - File delivery protocol

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