GB/T 40779-2021Information technology—Telecommunications and information exchange between systems—Low-voltage power line communication protocol for urban street light access (English PDF)
信息技术 系统间远程通信和信息交换 应用于城市路灯接入的低压电力线通信协议
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Issued by
SAMR; SAC
Level / Type
National · Recommended
Issue date
October 11, 2021
Implementation date
May 1, 2022
Scope
GB/T 40779-2021 is the English-translated version of 信息技术 系统间远程通信和信息交换 应用于城市路灯接入的低压电力线通信协议.
GB/T 40779-2021 defines the narrowband low-voltage power line communication protocol used to connect urban street lights, where data is modulated onto a carrier and sent over the 220 V/380 V supply lines themselves.
It specifies the protocol stack in three layers: the application support layer, with its protocol frame, data transmission and network management commands; the data link layer, with the logical link control and media access control sublayers; and the physical layer, covering coding and modulation, frame format, subcarriers, channel coding, OFDM modulation, signal transmission modes and physical layer services.
It also lists the abbreviations used and refers to GB/T 31983.31-2017 for the narrowband OFDM physical layer. It applies to applications that communicate with street lights over low-voltage supply lines. It was issued on 11 October 2021 and has applied since 1 May 2022.
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Document preview — GB/T 40779-2021
National Standard of the People's Republic of China
- ICS
- 35.110
- Classification
- L 77
Issued by: State Administration for Market Regulation; Standardization Administration of the PRC
Contents
- Foreword
- 1 Scope
- 2 Normative references
- 3 Terms and definitions
- 4 Abbreviations
- 5 Power line communication protocol stack structure
- 6 Application support layer
- 6.1 General requirements
- 6.2 Application support layer protocol frame
- 6.3 Data Transmission
- 6.4 Network Management Command
- 7 Data link layer
- 7.1 Logical Link Control Sublayer
- 7.2 Media Access Control Sublayer
- 8 Physical layer
- 8.1 General requirements
- 8.2 Physical layer coding and modulation
- 8.3 Physical layer frame format
- 8.4 Subcarrier
- 8.5 Channel coding
- 8.6 OFDM modulation
- 8.7 Physical layer signal transmission mode
- 8.8 Physical layer services
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 of Standardization Documents" Drafting.
1 Scope
This document specifies the narrowband low-voltage power line communication application support layer, data link layer and physical layer protocols applied to the access of urban street lights.
This document is suitable for applications that communicate with street lights via low-voltage power supply lines (220V/380V voltage levels).
2 Normative references
The content of the following documents constitutes an indispensable clause of this document through normative references in the text. Among them, dated quotations 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 31983.31-2017 Low-Voltage Narrowband Power Line Communication Part 31: Narrowband Orthogonal Frequency Division Multiplexing Power Line Communication Physics Layer specification
3 Terms and definitions
The following terms and definitions apply to this document.
3.1 Power line communication
The data is modulated to a suitable carrier frequency in a certain way, and the power line is used as a physical medium for transmission, which is realized in the data terminal. Communication or control between.
Note: Power line communication is also called power line carrier communication.
4 Abbreviations
The following abbreviations apply to this document.
AP. Application
API. Application Interface (ApplicationInterface)
APDU. Application Protocol Data Unit (APPProtocolDataUnit)
APS. Application Support (ApplicationSupport)
ASG. Active Sub-carrier Group (ActiveSub-carrierGroup)
CCA. Channel Condition Assessment (ChannelConditionAssessment)
CFP. ContentionFreePeriod
CRC. Cyclic Redundancy Check (CyclicRedundancyCheck)
CSMA/CA. Carrier Sense Multiple Access with Collision Avoidance
DIB. Data Information Base (DataInformationBase)
DID. Domain Identification (DomainIdentification)
DLL. Data Link Layer (DataLinkLayer) […]
......
This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 29 pages — is available in the English PDF.
Referenced standards
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