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GB/T 46457.1-2025Internet of things - 470 MHz/2.4 GHz frequency band sensor network communication and information exchange - Part 1: Physical layer requirements and link layer protocols (English PDF)

物联网　470MHz/2.4GHz频段传感网通信与信息交换　第1部分：物理层要求及链路层协议

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Issued by

SAMR; SAC

Level / Type

National · Recommended

Issue date

October 5, 2025

Implementation date

May 1, 2026

Scope

GB/T 46457.1-2025 is the English-translated version of 物联网　470MHz/2.4GHz频段传感网通信与信息交换　第1部分：物理层要求及链路层协议.

GB/T 46457.1-2025 is the Chinese standard "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".

Its scope clause reads: 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. Its clauses include terms and definitions.

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Document preview — GB/T 46457.1-2025

National Standard of the People's Republic of China

ICS: 35.100.20
Classification: L 79

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

Preface
Introduction
1.Scope
2 Normative References
3.Terms and Definitions
4.Abbreviations
5.General Requirements
5.1 Network Topology
5.2 Protocol Stack Structure
5.3 Address Definition
6.Physical layer requirements
6.1 General Requirements
6.2 Modulation method requirements
6.3 Frame Structure
6.4 Parameter Requirements
6.5 Interference Avoidance Technology
6.6 Rate
7 Synchronous Media Access Control Layer Protocol
7.1 Resource Mapping
7.2 Synchronous Media Access Control Layer Frame Structure
7.3 Channel Definition
7.4 Broadcast Channel (BCH)
7.5 Access Process
8.Asynchronous Media Access Control (AMAC) protocol
8.1 Load Mapping
8.2 Asynchronous Media Access Control Layer Frame Structure
8.3 Frame Type Definition
8.4 Time Parameter Definition
8.5 Access Process
9 Logical Link Control Layer Protocol
9.1 Logical Link Control Layer Definition
9.2 Logical Link Control Layer Frame Structure
9.3 Logical Link Control Layer Instructions
9.4 Topology Establishment
9.5 Data Forwarding Process
9.6 Blacklist or Whitelist Processing
Appendix A (Informative) Sensor Terminal Data Format
Appendix B (Normative) Interference Avoidance Technical Requirements
Appendix C (Normative) CRC-16 Check Algorithm

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.

GB/T 37684 | GB/T 37685 | GB/T 38322 | GB/T 46456.2 | GB/T 46456.1 | […]

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This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 52 pages — is available in the English PDF.

Referenced standards

Normative references

Editions of GB/T 46457.1

Edition	Title	Revision	Status
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	current edition	Current

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