确定性网络研究综述

doi:10.11959/j.issn.1000-436x.2019119

通信学报 ›› 2019, Vol. 40 ›› Issue (6): 160-176.doi: 10.11959/j.issn.1000-436x.2019119

确定性网络研究综述

黄韬,汪硕,黄玉栋,郑尧,刘江,刘韵洁

北京邮电大学网络与交换国家重点实验室，北京 100876

修回日期:2019-02-10 出版日期:2019-06-25 发布日期:2019-07-04
作者简介:黄韬（1980– ），男，重庆人，博士，北京邮电大学教授，主要研究方向为路由与交换、软件定义网络、内容分发网络等。|汪硕（1991– ），男，河南灵宝人，博士，北京邮电大学在站博士后，主要研究方向为数据中心网络、软件定义网络、网络流量调度等。|黄玉栋（1998–），男，重庆人，北京邮电大学硕士生，主要研究方向为未来网络体系架构、确定性网络、软件定义网络等。|郑尧（1998–），女，吉林四平人，北京邮电大学硕士生，主要研究方向为未来网络体系架构、确定性网络、软件定义网络等。|刘江（1983–），男，河南郑州人，博士，北京邮电大学副教授，主要研究方向为网络体系架构、网络虚拟化、软件定义网络、信息中心网络等。|刘韵洁（1943–），男，山东烟台人，中国工程院院士，主要研究方向为未来网络体系架构、网络融合与演进等。
基金资助:
中国博士后科学基金资助项目(2018M641281);国家自然科学基金资助项目(61872401)

Survey of the deterministic network

HUANG Tao,WANG Shuo,HUANG Yudong,ZHENG Yao,LIU Jiang,LIU Yunjie

State Key Laboratory of Networking and Switching Technology,Beijing University of Posts and Telecommunications,Beijing 100876,China

Revised:2019-02-10 Online:2019-06-25 Published:2019-07-04
Supported by:
China Postdoctoral Science Foundation Project(2018M641281);The National Natural Science Foundation of China(61872401)

摘要/Abstract

摘要：

现有的互联网面对激增的视频流量和工业机器应用，存在着大量的拥塞崩溃、数据分组时延等问题，而许多网络应用，例如工业互联网、远程医疗、无人驾驶、VR游戏等，需要达到1~10 ms时延，微秒级抖动但传统的网络只能将端到端的时延减少到几十毫秒。在这样的背景下，对网络端到端时延的控制如何从“尽力而为”到“准时、准确”，成为当前全球关注的热点领域。通过介绍确定性网络的应用场景与需求，描述当前该领域的主要研究成果，总结分析了该领域的研究发展趋势和核心问题，期望对该领域的研究起到参考和帮助作用。

关键词: 确定性网络, 时间敏感网络, 5G移动通信, 工业互联网, 服务质量, 超低时延

Abstract:

The current Internet faces a huge increase in video traffic and industrial machine applications,causing a lot of congestion and packet delays.Besides,many network applications,such as industrial Internet,telemedicine,driverless,VR games,etc,require a latency from 1 to 10 milliseconds and jitters within microsecond.But traditional network can only reduce the end-to-end latency to tens of milliseconds.Under this background,how to transit from “best effort” to“punctuality,accuracy”,controlling the end-to-end delay has become a hot field of global network research.The application scenarios and requirements of the deterministic network were introduced，and the main research results of the current parties were described as well as the trend of development and core issues were summarized.It hopes to provide a reference and help for the research in this field.

Key words: deterministic network, time sensitive network, 5G mobile communication, industrial internet, ultra-low latency

中图分类号:

TP393

黄韬,汪硕,黄玉栋,郑尧,刘江,刘韵洁. 确定性网络研究综述[J]. 通信学报, 2019, 40(6): 160-176.

HUANG Tao,WANG Shuo,HUANG Yudong,ZHENG Yao,LIU Jiang,LIU Yunjie. Survey of the deterministic network[J]. Journal on Communications, 2019, 40(6): 160-176.

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标准					时延/ms
标准	下行	上行	帧对齐	调度	手机处理	基站处理	核心网处理	目标总时延
3G	2	2	2	1.3	8	3	2	20
4G	1	1	1	0~18	4	2	1	10~28
4.9G	0.14	0.14	0.14	预调度	0.5	0.5	0.5	1.5
5G	0.125	0.125	0.125	预调度	0.25	0.25	0.1	1

技术	应用范围	应用场景	是否支持SDN	主要功能
FlexE	物理层与数据链路层之间	5G 网络的云服务、网络切片，AR/ V R/超高清视频等	是	网络切片，子端口隔离
AVB/TSN	数据链路层	实时音频/视频，工业自动化与控制系统（IACS）应用等	是	时钟同步，局域网范围有界的时延抖动和丢失分组
Det/Net	网络层	实时音频/视频，工业自动化与控制系统（IACS）应用等	是	网络层的操作维护管理，端到端的确定传输

确定性网络研究综述

Survey of the deterministic network

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