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Internet of things - 470 MHz/2.4 GHz frequency band sensor network communication and information exchange - Part 1: Physical layer requirements and link layer protocols
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Basic data
| Standard ID | GB/T 46457.1-2025 (GB/T46457.1-2025) |
| Description (Translated English) | Internet of things - 470 MHz/2.4 GHz frequency band sensor network communication and information exchange - Part 1: Physical layer requirements and link layer protocols |
| Sector / Industry | National Standard (Recommended) |
| Classification of Chinese Standard | L79 |
| Classification of International Standard | 35.100.20 |
| Word Count Estimation | 54,536 |
| Date of Issue | 2025-10-05 |
| Date of Implementation | 2026-05-01 |
| Issuing agency(ies) | State Administration for Market Regulation and Standardization Administration of China |
GB/T 46457.1-2025: Internet of things - 470 MHz/2.4 GHz frequency band sensor network communication and information exchange - Part 1: Physical layer requirements and link layer protocols
---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.
ICS 35.100.20
CCSL79
National Standards of the People's Republic of China
Internet of Things 470MHz/2.4GHz band
Sensor Network Communication and Information Exchange Part 1.
Physical layer requirements and link layer protocols
Published on 2025-10-05
Implemented on May 1, 2026
State Administration for Market Regulation
The State Administration for Standardization issued a statement.
Table of contents
Preface III
Introduction IV
1.Scope 1
2 Normative References 1
3.Terms and Definitions 1
4.Abbreviations 2
5.General Requirements 2
5.1 Network Topology 2
5.2 Protocol Stack Structure 3
5.3 Address Definition 5
6.Physical layer requirements 5
6.1 General Requirements 5
6.2 Modulation method requirements 5
6.3 Frame Structure 5
6.4 Parameter Requirements 6
6.5 Interference Avoidance Technology 7
6.6 Rate 7
7 Synchronous Media Access Control Layer Protocol 7
7.1 Resource Mapping 7
7.2 Synchronous Media Access Control Layer Frame Structure 8
7.3 Channel Definition 10
7.4 Broadcast Channel (BCH) 10
7.5 Access Process 18
8.Asynchronous Media Access Control (AMAC) protocol 22
8.1 Load Mapping 22
8.2 Asynchronous Media Access Control Layer Frame Structure 22
8.3 Frame Type Definition 24
8.4 Time Parameter Definition 27
8.5 Access Process 27
9 Logical Link Control Layer Protocol 30
9.1 Logical Link Control Layer Definition 30
9.2 Logical Link Control Layer Frame Structure 30
9.3 Logical Link Control Layer Instructions 31
9.4 Topology Establishment 43
9.5 Data Forwarding Process 43
9.6 Blacklist or Whitelist Processing 44
Appendix A (Informative) Sensor Terminal Data Format 45
A.1 Data Frame Definition 45
A.2 Data Transmission Method 46
A.3 Message Data Arrangement Format 46
Appendix B (Normative) Interference Avoidance Technical Requirements 47
Appendix C (Normative) CRC-16 Check Algorithm 48
C.1 Verification Algorithm 48
C.2 Implementation Method 48
Foreword
This document is in accordance with GB/T 1.1-2020 "Standardization Work Guidelines Part 1.Structure and Drafting Rules of Standardization Documents".
Drafting is scheduled.
This document is Part 1 of GB/T 46457 "Internet of Things 470MHz/2.4GHz Band Sensor Network Communication and Information Exchange".
GB/T 46457 has published the following parts.
---Part 1.Physical Layer Requirements and Link Layer Protocols
Please note that some content in this document may involve patents. The issuing organization of this document assumes no responsibility for identifying patents.
This document was proposed and is under the jurisdiction of the National Information Technology Standardization Technical Committee (SAC/TC28).
This document was drafted by. State Grid Jiangsu Electric Power Research Institute, and Shanghai Institute of Microsystem and Information Technology, Chinese Academy of Sciences.
Research Institute, China Electronics Technology Standardization Institute, CESI (Shenzhen) Electronic Information Product Standardization Engineering Center Co., Ltd., China Electric Power Research Institute
Research Institute Co., Ltd., Beijing Zhixin Semiconductor Technology Co., Ltd., Shanghai Jiao Tong University, Shenzhen ZTE Microelectronics Technology Co., Ltd., State Grid
Shandong Electric Power Research Institute, China Transportation Information Technology Group Co., Ltd., Shanghai Leyan Electric Co., Ltd., Guangdong Electric Power
Communication Technology Co., Ltd., Shanghai Aoyou Information Technology Co., Ltd., State Grid Shanghai Electric Power Research Institute, State Grid Fujian Electric Power
Information and Communication Branch of Power Co., Ltd., Shenzhen Guodian Technology Communication Co., Ltd., Quanzhou Power Skills Research Institute of Fujian Provincial Power Co., Ltd.
Institute, Shanghai Panqi Microelectronics Co., Ltd., State Grid Xinjiang Electric Power Co., Ltd. Changji Power Supply Company, China Mobile Internet of Things Co., Ltd., Tianjin Kunpeng Information Technology Co., Ltd.
Information Technology Co., Ltd., Zhuhai Taixin Semiconductor Co., Ltd., Zhejiang Lierda Internet of Things Technology Co., Ltd., Shenzhen New Seasons Information Technology Co., Ltd.
Limited Liability Company, Anhui Jiaokong Engineering Group Co., Ltd., Nanjing Antongjie Technology Industry Co., Ltd., Beijing Fengqiao Technology Co., Ltd., Dongguan Fei
Siling Communication Technology Co., Ltd., China Southern Power Grid Ultra-High Voltage Transmission Company, and Xi'an Aerospace Automation Co., Ltd.
The main drafters of this document are. Hu Chenbo, Sun Wei, Yang Hong, Zheng Min, Su Jingru, Guo Xiong, Wang Zhen, Liu Hong, Hu Yanjie, Tang Peiyao, and Sun Bo.
Yang Zhichao, He Fan, Xue Guangtao, Wang Wenting, Li Dazhuo, Li Wenzhuo, Lei Gen, Ye Lingsong, Yao Junfeng, Li Xiaolei, Yang Lanqing, Li Bo, Liu Xin, Feng Di
Yang Zhihua, Yun Chao, Deng Xianqin, Ge Yuanpeng, Zhu Yongming, Ding Yuan, Li Yinglong, Zhang Minghe, Li Zheng, Yang Yueming, He Wenjing, Gu Chaojie, Yao Wenjie
Luo Wenhua, Huang Mingxiang, Luo Yongbing, Zhan Zhaowu, Zhang Jianfeng, Zhai Di, Jia Ling, Wang Ning, Ye Tong, Yang Huimin, Xie Hongxin, Tang Zhenzhong, Xu Haotian
Shen Hankun, Li Long, Ma Yong, Wen Xing, Zhou Juncheng.
Introduction
GB/T 46457 "Communication and Information Exchange of Sensor Networks in the 470MHz/2.4GHz Band of the Internet of Things" specifies the requirements for low-power wireless sensor networks.
Physical layer requirements, link layer protocols, and sensor terminal data specifications for non-frequency hopping communication devices in wireless sensor networks for communication and information exchange.
These aim to standardize the protocol system for wireless networking of low-power wireless non-frequency hopping communication equipment in sensor networks and wireless access of sensor terminals.
GB/T 46457 is proposed to consist of two parts.
---Part 1.Physical Layer Requirements and Link Layer Protocols. The purpose is to guide low-power wireless non-frequency hopping communication devices in wireless sensor networks.
The design, development, testing, and use of [the system] specify general requirements, physical layer requirements, synchronous media access control layer protocol specifications, and asynchronous media access control layer protocol specifications.
Access control layer protocol specification and logical link control layer protocol specification.
---Part 2.Sensor Terminal Data Requirements. The purpose is to ensure standardized data specifications for wireless sensor terminals, defining the requirements for sensor terminals...
Data message format.
Internet of Things 470MHz/2.4GHz band
Sensor Network Communication and Information Exchange Part 1.
Physical layer requirements and link layer protocols
1 Scope
This document specifies the requirements for low-power wireless non-frequency hopping communication protocols in the 470MHz/2.4GHz band.
This document applies to the design, development, testing, and use of low-power non-frequency hopping communication devices for wireless sensor networks.
2 Normative references
The contents of the following documents, through normative references within the text, constitute essential provisions of this document. Dated citations are not included.
For references to documents, only the version corresponding to that date applies to this document; for undated references, the latest version (including all amendments) applies.
This document.
GB/T 30269.2-2013 Information Technology - Sensor Networks - Part 2.Terminology
GB/T 33474-2016 Internet of Things Reference Architecture
3 Terms and Definitions
The terms and definitions defined in GB/T 30269.2-2013, as well as the following terms and definitions, apply to this document.
3.1
sensor network
By utilizing sensor network nodes and other network infrastructure, information is collected from the physical world and transmitted.
A networked information system that processes and provides services to users.
[Source. GB/T 30269.2-2013, 2.1.6]
3.2
sensor terminal
The terminal devices of a sensor network monitor or control objective phenomena and physical properties in the physical world according to certain rules, and can...
The device that converts the monitoring results into a processable signal can be wirelessly connected to the access node or sensor network gateway node.
3.3
Devices that connect sensor networks and other networks have functions such as network management, protocol conversion, self-organizing networks, and sensor terminal access.
[Source. GB/T 30269.2-2013, 2.1.5, with modifications]
3.4
accessnode
A communication relay device in a sensor network that has the functions of self-organizing network, sensor terminal access, and wireless connection to sensor network gateway nodes.
3.5
In point-to-multipoint communication, the communication device is in control.
...
