通信学报 ›› 2020, Vol. 41 ›› Issue (8): 187-203.doi: 10.11959/j.issn.1000-436x.2020154
修回日期:
2020-06-08
出版日期:
2020-08-25
发布日期:
2020-09-05
作者简介:
伏玉笋(1972- ),男,甘肃天水人,博士,上海交通大学助理研究员,主要研究方向为无线通信与系统、无线网联智能系统、工业互联网与安全、智能制造等|杨根科(1963- ),男,山西原平人,博士,上海交通大学教授,主要研究方向为离散事件系统和混杂系统的建模、优化与控制
基金资助:
Revised:
2020-06-08
Online:
2020-08-25
Published:
2020-09-05
Supported by:
摘要:
目前超可靠低时延通信(URLLC)研究较碎片化,且侧重于某一点,因此以全景式视角,从应用场景和需求开始,介绍了URLLC相关的系统架构、关键技术和总体解决方案;然后分别对物理层检测性能需求、链路自适应、无线资源管理、端到端分集解决方案以及如何与时间敏感网络集成进行了深入的分析,并对候选方案进行了探讨。希望从广度到深度,对URLLC的理论研究以及如何应用有一个透彻全面的介绍,对其挑战有一个清晰的认识,从而为相关研究和工程技术人员提供借鉴。
中图分类号:
伏玉笋,杨根科. 无线超可靠低时延通信:关键设计分析与挑战[J]. 通信学报, 2020, 41(8): 187-203.
Yusun FU,Genke YANG. Wireless ultra-reliable and low-latency communication:key design analysis and challenge[J]. Journal on Communications, 2020, 41(8): 187-203.
表1
典型低时延高可靠场景性能需求"
高可靠场景 | 时延/ms | 可用性 | 可靠性 | 体验速率/(Mbit·s-1) |
离散自动化-运动控制 | 1 | 99.999 9% | 99.999 9% | 1~10 |
离散自动化 | 10 | 99.99% | 99.99% | 10 |
过程自动化-远程控制 | 50 | 99.999 9% | 99.999 9% | 1~100 |
过程自动化-监控 | 50 | 99.9% | 99.9% | 1 |
配电-中压 | 25 | 99.9% | 99.9% | 10 |
配电-高压 | 5 | 99.999 9% | 99.999 9% | 10 |
智能交通系统-回程设施 | 10 | 99.999 9% | 99.999 9% | 10 |
触觉互动 | 0.5 | 99.999% | 99.999% | 低 |
远程控制 | 5 | 99.999% | 99.999% | ≤10 |
表4
5G系统的QoS特征"
5G QI* | 资源类型 | 缺省优先级 | 分组时延预算/ms | 分组错误率 | 缺省数据突发量 | 缺省平均窗/ms | 应用举例 |
1 | 20 | 100 | 10-2 | N/A | 2 000 | 会话语音 | |
… | GBR | … | … | … | … | … | … |
76 | 56 | 500 | 10-4 | N/A | 2 000 | “实时”上行流媒体 | |
5 | 10 | 100 | 10-6 | N/A | N/A | IMS信令 | |
… | Non-GBR | … | … | … | … | … | … |
80 | 68 | 10 | 10-6 | N/A | N/A | 低时延eMBB应用(AR) | |
82 | 19 | 10 | 10-4 | 255 | 2 000 | 离散自动化 | |
83 | delay critical GBR | 22 | 10 | 10-4 | 1 354 | 2 000 | 离散自动化 |
84 | 24 | 30 | 10-5 | 1 354 | 2 000 | 智能交通系统 | |
85 | 21 | 5 | 10-5 | 255 | 2 000 | 配电-高压 |
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