GB/T 42040-2022 English PDF

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GB/T 42040-2022: Space data and information transfer systems - Unified space data link protocol
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Basic data

Standard ID: GB/T 42040-2022 (GB/T42040-2022)
Description (Translated English): Space data and information transfer systems - Unified space data link protocol
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: V75
Classification of International Standard: 49.140
Word Count Estimation: 66,624
Date of Issue: 2022-10-12
Date of Implementation: 2022-10-12
Issuing agency(ies): State Administration for Market Regulation, China National Standardization Administration

GB/T 42040-2022: Space data and information transfer systems - Unified space data link protocol

---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
Space data and information transfer systems - Unified space data link protocol ICS 49.140 CCSV75 National Standards of People's Republic of China Space Data and Information Transmission System Unified Space Data Link Protocol Released on 2022-10-12 2022-10-12 implementation State Administration for Market Regulation Released by the National Standardization Management Committee

table of contents

Preface III 1 Scope 1 2 Normative references 1 3 Terms and Definitions 1 4 Abbreviations 1 5 Protocol Overview 3 5.1 Related concepts 3 5.2 Business Overview 6 5.3 Function 10 6 business 12 6.1 Business data unit 12 6.2 Multiple Access Point Package Service 14 6.3 Multiple Access Point Access Service 15 6.4 Multiple access point byte stream service 17 6.5 Main channel operation control domain business 18 6.6 Virtual Channel Frame Service 19 6.7 Main channel frame service 20 6.8 Insert business 21 6.9 Communication operation procedure management business 22 7 Data unit format 23 7.1 Bit number convention 23 7.2 Uniform space data link protocol transmission frame 23 7.3 Transmission frame leading header 24 7.4 Transmission frame insertion field 27 7.5 Transmission frame data field 27 7.6 Operating the Control Domain 31 7.7 Frame error control field 31 8 Protocol Process 32 8.1 Sender protocol process 32 8.2 Receiver Protocol Process 39 9 Management parameters 46 9.1 General 46 9.2 Physical channel management parameters 47 9.3 Main channel management parameters 47 9.4 Virtual channel management parameters 48 9.5 MAP Channel Management Parameters 48 9.6 Packet transmission management parameters 49 10 Space Data Link Security Protocol 49 10.1 General requirements 49 10.2 Space data link security protocol format 49 10.3 Space data link security protocol process 51 10.4 Management parameters with spatial data link security 52 10.5 Management of space data link security services 53 Appendix A (Normative) Truncated Transport Frame Protocol Data Unit 54 Appendix B (informative) Frame randomization implementation for idle data transmission only 57 Appendix C (Normative) CRC-16 Frame Error Control Field Coding Process 58 Figure 1 Hierarchical relationship between the USLP protocol and the OSI reference model 3 Figure 2 Relationship between various channels5 Figure 3 Asynchronous business model 7 Figure 4 Synchronous business model 8 Figure 5 The internal organization and process of the protocol entity at the sending end10 Figure 6 The internal organization and process of the protocol entity at the receiving end11 Figure 7 USLP protocol channel tree 11 Figure 8 Conventions of bit numbers 23 Figure 9 USLP transmission frame composition structure 24 Figure 10 Master header format of complete transmission frame 24 Figure 11 Transport Frame Data Field (TFDF) 28 Figure 12 Format of Transport Frame Data Field (TFDF) header28 Figure 13 MAPP processing function abstract model of fixed-length TFDF32 Figure 14 MAPP processing function abstract model of variable-length TFDF33 Figure 15 MAPA_SDU generation function abstract model of fixed-length TFDF34 Figure 16 MAPA_SDU generation function abstract model of variable length TFDF34 Figure 17 MAP byte stream processing function abstract model 35 Figure 18 MAP multiplexing function abstract model 35 Figure 19 Virtual channel generation function abstract model 36 Figure 20 Abstract model of virtual channel multiplexing function 37 Figure 21 Abstract model of main channel generation function 37 Figure 22 Abstract model of main channel multiplexing function 38 Figure 23 Abstract model of full frame generation function 39 Figure 24 Abstract model of full frame reception function 40 Figure 25 Abstract model of main channel demultiplexing function 41 Figure 26 Abstract model of main channel receiving function 41 Figure 27 Abstract model of virtual channel demultiplexing function 42 Figure 28 Abstract model of virtual channel reception function 43 Figure 29 Abstract model of MAP demultiplexing function 43 Figure 30 Abstract model of MAP byte stream extraction function 44 Figure 31 Abstract model of MAPA_SDU extraction function of fixed-length TFDF 44 Figure 32 Abstract model of MAPA_SDU extraction function of variable length TFDF 45 Figure 33 Abstract model of MAPP extraction function for fixed-length TFDF 46 Figure 34 Abstract model of MAPP extraction function of variable-length TFDF 46 Figure 35 Comparison of frame structure without SDLS and transmission frame with SDLS 50 Figure A.1 USLP truncated transport frame without SDLS 54 Figure A.2 USLP with SDLS truncated transport frame 55 Figure A.3 Truncated transport frame leading header 55 Figure B.1 OID data generation logic block diagram (Fibonacci form) 57 Figure B.2 OID data generation logic block diagram (Galois form) 57 Figure C.1 16-bit frame error control coding logic diagram 58 Figure C.2 16-bit frame error control decoding logic diagram 59 Table 1 Services provided by the USLP agreement8 Table 2 Combination interpretation of bypass/sequence control flag and protocol control command flag 26 Table 3 Explanation of VCF count length 27 Table 4 TFDZ construction rules 29 Table 5 Physical channel management parameters and their descriptions 47 Table 6 Main channel management parameters and their description 47 Table 7 Virtual channel management parameters and their description 48 Table 8 MAP channel management parameters and their description 49 Table 9 Packet transmission management parameters and their description 49 Table 10 Virtual channel management parameters added to support SDLS and their descriptions 52

foreword

This document is in accordance with the provisions of GB/T 1.1-2020 "Guidelines for Standardization Work Part 1.Structure and Drafting Rules for Standardization Documents" drafting. Please note that some contents of this document may refer to patents. The issuing agency of this document assumes no responsibility for identifying patents. This document is proposed and managed by the National Aerospace Technology and Its Application Standardization Technical Committee (SAC/TC425). This document is drafted by. Beijing Space Vehicle Overall Design Department, Tsinghua University, China Aerospace Standardization Institute, Beijing Tracking and Communication Technology Research Institute, Xidian University, Beijing University of Posts and Telecommunications, Beijing Remote Sensing Equipment Research Institute, CTI Testing and Certification Group Co., Ltd. Division, Guangzhou Jingwei Standard Technology Service Co., Ltd., Zhongshan Pauway Testing Technology Co., Ltd., Guangdong Ruizhou Technology Co., Ltd. The main drafters of this document. He Xiongwen, Li Jionghui, Li Wenjuan, Xu Mingwei, Zhu Shunjie, Zhou Yuxia, Huang Lei, Dong Fang, Gao Jian, Jia Weisong, Li Hongyan, Gu Rentao, Fang Yue, Tian Lin, Huang Kewu, Ren Liang, Zhan Panpan, Yu Huan, Liu Chao, Yang Yixuan, Li Xiaoguang, Yan Dong, Zhang Wei, Jiang Qingfu, Yuan Xin, Jin Feng, Tan Zhongke, Du Zhiyao, Guo Ruizhou. Space Data and Information Transmission System Unified Space Data Link Protocol

1 Scope

This document specifies the business, data unit format, Protocol flow, management parameters, and support for space data link security protocols. This document is applicable to data communication from spacecraft to ground, from ground to spacecraft, and between spacecraft using the unified space data link protocol. According to the link layer data transmission service.

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 2900.54 Electrotechnical term radiocommunication. transmitter, receiver, network and operation GB/T 39344-2020 Communication Operation Procedures for Spatial Data and Information Transmission System-1 GB/T 39348-2020 Spatial data and information transmission system telemetry synchronization and channel coding GB/T 39349-2020 Spatial data and information transmission system remote synchronization and channel coding GB/T 39353-2020 Space Data and Information Transmission System Proximity Space Link Protocol Synchronization and Coding Sublayer GB/T 42041 Terminology for Space Data and Information Transmission in Aerospace

3 Terms and Definitions

GB/T 2900.54, GB/T 42041 and the following terms and definitions apply to this document. 3.1 delimited delimited Data has properties of known and finite length. 3.2 mission phase A period of time in a space mission during which the mission process has specific objectives. NOTE. The transition between two consecutive mission phases may cause interruption of communication services. 3.3 space link spacelink A communication link between a spacecraft and the corresponding ground system or between two spacecraft. NOTE. A space link consists of one or more unidirectional or bidirectional physical channels.

4 Abbreviations

The following abbreviations apply to this document. ......

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