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GB/T 43670-2024Space data and information transfer systems - SpaceFibre data bus communication protocol on spacecraft (English PDF)

空间数据与信息传输系统航天器SpaceFibre总线通信协议

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Issued by

SAMR; SAC

Level / Type

National · Recommended

Issue date

March 15, 2024

Implementation date

July 1, 2024

Scope

GB/T 43670-2024 is the English-translated version of 空间数据与信息传输系统航天器SpaceFibre总线通信协议.

GB/T 43670-2024 is the Chinese standard "Space data and information transfer systems - SpaceFibre data bus communication protocol on spacecraft".

Its scope clause reads: This document specifies the spacecraft SpaceFibre bus communication protocol business, data format, physical layer protocol, data link layer protocol, Network layer protocols, management information base, and reliability design.

This document applies to the development and use of the SpaceFibre bus and its related equipment in spacecraft. Its clauses include terms and definitions.

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Document preview — GB/T 43670-2024

National Standard of the People's Republic of China

ICS: 49.140
Classification: V 75

Issued by: State Administration for Market Regulation; Standardization Administration of the PRC

Preface
1 Scope
2 Normative references
3 Terms and Definitions
4 Abbreviations
5 General Principles
5.1 Protocol Stack
5.2 Topology
6 Business Definition
6.1 Business Description
6.2 Network layer services
6.3 Data Link Layer Services
6.4 Physical layer services
6.5 Management Information Base Services
7 Format Definition
7.1 8B/10B Encoding and Decoding
7.2 Control Word
7.3 Character
7.4 Frame Format
7.5 Data Packet Format
7.6 Control Word and Frame Priority
7.7 K code summary table
7.8 Summary table of control characters
8 Physical Layer Protocol
8.1 Physical layer functions
8.2 Serialization
9 Data Link Layer Protocol
9.1 Channel Sublayer Protocol
9.2 Multichannel Sublayer Protocol
9.3 Link Control Sublayer Protocol
10 Network Layer Protocol
10.1 Network Layer Functions
10.2 SpaceFibre Network
10.3 Virtual Network
10.4 Link
10.5 Sending Data Packets
10.6 Receiving Data Packets
10.7 Routing Switch
10.8 Packet Addressing
10.9 Group Adaptive Routing
10.10 Packet Multicast
10.11 Broadcast Message
10.12 SpaceFibre Node
10.13 SpaceFibre Unit
11 Management Information Base
11.1 Management Information Base Function
11.2 Network Management
11.3 Configuration Parameters
11.4 Status parameters
12 Reliability Design
12.1 Service Quality Assurance Mechanism
12.2 FDIR Mechanism
Appendix A (Informative) SpaceFibre bus physical layer design reference
Appendix B (Normative) SpaceFibre Bus Communication Protocol Business Interface
Appendix C (Informative) SpaceFibre bus communication protocol CRC check code calculation
References

1 Scope

This document specifies the spacecraft SpaceFibre bus communication protocol business, data format, physical layer protocol, data link layer protocol,

Network layer protocols, management information base, and reliability design.

This document applies to the development and use of the SpaceFibre bus and its related equipment in spacecraft.

2 Normative references

The contents of the following documents constitute the essential clauses of this document through normative references in this document.

For referenced documents without a date, only the version corresponding to that date applies to this document; for referenced documents without a date, the latest version (including all amendments) applies to

This document.

GB/T 42041 Aerospace terminology Space data and information transmission

3 Terms and definitions

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

3.1 Active Lane

An active one-way channel or a two-way channel.

3.2 asymmetric link

A link containing multiple channels in which one or more channels are unidirectional channels.

3.3 Available bandwidth

The number of data words and control words sent by all virtual channels in the link since the last update of bandwidth credits.

3.4 bandwidth utilization

The percentage of bandwidth allocated to a virtual channel that has been used in the recent period.

Note. When the bandwidth credit of a virtual channel reaches the upper or lower threshold, there is no need to calculate bandwidth utilization for a short period of time.

3.5 Bidirectional channel

An active channel for bidirectional information transmission on a link.

3.6 broadcastmessage

8 bytes of application data sent to each node on the network, and an 8-bit broadcast type identifier that indicates the meaning of the application data.

......
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

Normative references

GB/T 42041 Aerospace terminology — Space data and information transfer.Space terminology—Space data and information transfer

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