GB/T 40786.2-2021Information technology—Telecommunications and information exchange between systems—Low voltage power line communication—Part 2: Data link layer specification (English PDF)

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.

This document is the second part of GB/T 40786 "Telecommunications and Information Exchange Between Information Technology Systems, Low-Voltage Power Line Communication".

GB/T 40786 has released the following parts.

---Part 1: Physical layer specification;

---Part 2: Data link layer specification.

Introduction

GB/T 40786 "Telecommunications and Information Exchanges Between Information Technology Systems, Low-Voltage Power Line Communication" draws on international mainstream standards Framing and data transmission methods and protocol architecture, mainly for broadband power line communication network networking, management and maintenance, security mechanisms, neighbor interference agreements The part of adjustment, resource scheduling, etc. is described. This document is intended to be composed of two parts.

---Part 1: Physical layer specification. The purpose is to standardize the physics that is applicable to low-voltage power line communication technology in complex and harsh environments. Layer protocol.

---Part 2: Data link layer specification. The purpose is to standardize broadband low-voltage power line communication network topology, equipment data link layer agreement Protocol stack structure, data link layer frame format and management message format, beacon-based competition and non-competition channel access mechanism, network Low-voltage power line communication such as network access and exit mechanisms, network management and maintenance procedures, routing and topology management protocols, and security mechanisms Technical content.

1 Scope

This document specifies a general description of the data link layer of a broadband low-voltage (below 1kV) power line communication network, and the data link layer protocol. Discussion, service and safety.

This document applies to data link layer equipment (such as gateway equipment, bridges, terminal equipment, etc.) that use low-voltage power lines as communication media Design, manufacture, use and maintenance of […]

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 15629.3-2014 Information technology systems telecommunications and information exchange specific requirements for local area networks and metropolitan area networks Part 3: Carrier Sense Multiple Access with Collision Detection (CSMA/CD) access method and physical layer specification

GB/T 40786.1-2021 Long-distance communication and information exchange between information technology systems Low-voltage power line communication Part 1: Things Physical specification

ISO /IEC /IEEE8802-3.2021 Telecommunications and Information Exchange Between Information Technology Systems Local Area Networks and Metropolitan Area Networks Part 3 Points. Ethernet standard (Informationtechnology-Telecommunicationsandinformationexchangebetweensys-tems-Localandmetropolitanareanetworks-Specificrequirements-Part 3: StandardforEthernet)

3 Terms and definitions

The following terms and definitions apply to this document.