GB／T 40786.2-2021 信息技术系统间远程通信和信息交换低压电力线通信第2部分：数据链路层规范

ICS 35.110 CCS L 79 中华人民共和国国家标准 GB/T 40786.2—2021 信息技术 系统间远程通信和信息交换 低压电力线通信 第2部分：数据链路层规范 Information technology—Telecommunications and information exchange between systems—Low voltage power line communication— Part 2: Data link layer specification 2021-10-11 发布 2022-05-01 实施 国家市场监督管理总局 国家标准化管理委员会 发布 GB/T 40786.2—2021 目 次 前言 ········································································································································································································································································ Ⅲ 引言 ········································································································································································································································································ Ⅳ 1 范围 ········································································································································································································································································ 1 2 规范性引用文件 ················································································································································································································································ 1 3 术语和定义 ························································································································································································································································ 1 4 缩略语 ···································································································································································································································································· 3 5 总体描述 ································································································································································································································································ 4 5.1 概述 ································································································································································································································································ 4 5.2 网络拓扑 ························································································································································································································································ 4 5.3 协议栈结构 ···················································································································································································································································· 5 5.4 寻址 ································································································································································································································································ 6 5.5 QoS ································································································································································································································································ 6 5.6 CoS 等级 ························································································································································································································································ 7 5.7 字节序 ···························································································································································································································································· 7 5.8 管理消息时间 ················································································································································································································································ 7 5.9 其他约定 ························································································································································································································································ 7 6 数据链路层 ································································································································································································································································ 7 6.1 帧格式 ································································································································································································································································ 7 6.2 DLL 功能 ························································································································································································································································ 22 6.3 DLL 层管理消息 ················································································································································································································································ 75 7 安全 ········································································································································································································································································ 111 7.1 加密 ································································································································································································································································ 111 7.2 认证和密钥管理 ················································································································································································································································ 111 7.3 SC 维护 ························································································································································································································································ 115 附录 A（规范性） 优先级-优先级映射 ········································································································································································································ 135 附录 B（规范性） 流分类条件要求 ················································································································································································································ 136 参考文献 ········································································································································································································································································ 137 GB/T 40786.2—2021 前 言 本文件按照 GB/T 1.1—2020《标准化工作导则 第1部分：标准化文件的结构和起草规则》的规定起草。 本文件是 GB/T 40786《信息技术 系统间远程通信和信息交换 低压电力线通信》的第2部分。GB/T 40786 已经发布了以下部分： ——第1部分：物理层规范； ——第2部分：数据链路层规范。 请注意本文件的某些内容可能涉及专利。本文件的发布机构不承担识别专利的责任。 本文件由全国信息技术标准化技术委员会（SAC/TC 28）提出并归口。 本文件起草单位：中国电子技术标准化研究院、深圳市海思半导体有限公司、深圳市中兴微电子技术有限公司、北京卓越信通电子股份有限公司、清华大学、青岛东软载波科技股份有限公司、深圳市力合微电子股份有限公司、威胜信息技术股份有限公司、安徽继远软件有限公司、北京全电智领科技有限公司、深圳市国电科技通信有限公司、中国电力科学研究院有限公司。 本文件主要起草人：姜彤、董晨、温建、卓兰、杨昉、刘培、程晨、徐文学、杨韬、龚海涛、徐鹏程、刘剑、朱永、李健、赵波、刘庆扬、刘宣、龚海龙。 8