GB/T 29768-2013 in English

《GB/T 29768-2013信息技术 射频识别 800/900MHz空中接口协议》由TC28（全国信息技术标准化技术委员会）归口，主管部门为国家标准化管理委员会。
本标准规定了840MHz~845MHz和920MHz~925MHz频段射频识别系统空中接口的物理层和媒体访问控制层参数以及协议工作方式。
本标准适用于840MHz~845MHz和920MHz~925MHz频段射频识别系统标签和读写器的设计、生产、测试和使用。

This standard specifies parameters of the physical layer and media access control layer of air interface at 840 MHz ~845 MHz and at 920 MHz ~925 MHz of radio frequency identification system, and protocol working mode.
This standard is applicable to the design, production, testing and application of tags of radio frequency identification system at 840 MHz ~845 MHz and at 920 MHz ~ 925 MHz, and reader-writer.

Foreword I
Introduction II
1 Scope
2 Normative References
3 Terms and Definitions
4 Symbols and Abbreviated Terms
4.1 Symbols
4.2 Abbreviations
5 Physical Layer and Media Access Control Layer
5.1 Interactive Communication Model
5.2 Physical Layer and Media Access Control Layer from Reader-writer to Tag
5.2.1 General Requirements
5.2.2 Working Frequency
5.2.3 FHSS Parameter
5.2.4 Adjacent Channel Leakage Power Ratio
5.2.5 Radio Frequency Signal Envelope of Reader-Writer when It Switches on and Switches off Carrier
5.2.6 Radio Frequency Signal Envelope from Reader-Writer to Tag
5.2.7 Data Coding
5.3 Physical Layer and Media Access Control Layer from Tag to Reader-writer
5.3.1 Tag Energization
5.3.2 Modulation Mode
5.3.3 Data Coding
5.3.4 Backscatter Link Frequency
5.4 Data Transmission Sequence
5.5 Link Time Sequence
6 Protocol Working Mode
6.1 Anti-collision Mechanism
6.2 Structure of Storage Area of Tags
6.2.1 Overview
6.2.2 Tag Information Area
6.2.3 Coding Area
6.2.4 Security Area
6.2.5 User Area
6.3 Flag Bit of Tags
6.3.1 Matching Flag
6.3.2 Session and Check Flags
6.4 Tag State
6.4.1 General Requirements
6.4.2 State Transition
6.5 Command Set of Reader-writer
6.5.1 General Requirements
6.5.2 Sort Command
6.5.3 Query Command
6.5.4 Command for Repeating Query
6.5.5 Divide Command
6.5.6 Disperse Command
6.5.7 Shrink Command
6.5.8 Command for Acquiring Code
6.5.9 Command for Negative Acknowledge
6.5.10 Command for Getting Security Parameter
6.5.11 Command for Requesting XOR Authentication
6.5.12 Command for XOR Authentication
6.5.13 Command for Unilateral XOR Authentication
6.5.14 Command for Mutual XOR Authentication
6.5.15 Command for Requesting Authentication
6.5.16 Authentication Command
6.5.17 Command for Unilateral Authentication
6.5.18 Command for Mutual Authentication
6.5.19 Command for Secure Communication
6.5.20 Command for Refreshing Handle
6.5.21 Command for Getting Random Number
6.5.22 Access Command
6.5.23 Read Command
6.5.24 Write Command
6.5.25 Erase Command
6.5.26 Lock Command
6.5.27 Kill Command
6.6 Secure Authentication Protocol
6.6.1 Overview
6.6.2 Tag-to-Reader-Writer Unilateral Authentication Protocol
6.6.3 Reader-Writer-to-Tag Unilateral Authentication Protocol
6.6.4 Mutual Authentication Protocol
6.7 Secure Communication Protocol
7 Summary of Air Interface Parameters
7.1 Summary of Physical Layer and Media Access Control Layer Parameters
7.2 Summary of Parameters for Protocol Working Mode
7.3 Summary of Parameters for Anti-collision Management
Appendix A (Informative) Check Ending Condition
Appendix B (Normative) State Transition Table of Tag
Appendix C (Normative) The Command Response Table of Tag
Appendix D (Normative) CRC Calculation
Appendix E (Normative) The Operating State that the Tag Returns to