摘要
在6G物联网时代,海量终端设备智慧互联,发掘环境信息提高生活质量,创造更加智能的世界。随着经济社会和工业的发展,工业物联网(industrial internet of things,IIoT)中工业节点的数量以惊人的速度增长,这些工业节点间实时传输交换信息,对通信的时延和可靠性提出了更高要求。在有限的时频资源和严格的通信质量要求下,为保证IIoT中海量终端的超可靠超低时延通信(ultra-reliable and low-latency communication,URLLC),需要从低时延、可靠性、能量效率、频谱效率和可拓展性等方面对存在的关键问题进行分析。在工业物联网场景下,结合URLLC的特点和需求,研究了工业物联网中通信的关键问题:活跃用户检测、随机接入、资源分配和通算融合中的挑战和机遇,对关键问题以及现有技术进行总结分析后,提出了未来的研究方向。
In the age of 6G internet of things,massive terminal devices are connected intelligently to explore envi-ronmental information to improve life quality and create a more intelligent world.With the development of economic society and industry,the number of industrial nodes in the industrial internet of things(IIoT)grows at an significant speed.The real-time transmission and exchange of information between these industrial nodes puts forward higher requirements for communication delay and reliability.Under limited time-frequency resources and strict communica-tion quality requirements,in order to ensure ultra-reliable and low-latency communication(URLLC)of massive ter-minals in IIoT,it is necessary to analyze the existing key problems from the aspects of low delay,reliability,energy efficiency,spectrum efficiency and scalability.In the scenario of IIoT,combined with the characteristics and requirements of URLLC,the key issues of communication in IIoT were studied,including challenges and opportunities in active user detection,random access,resource allocation and convergence of communication and computation.After summarizing and analyzing the key issues and existing technologies,the future research direction was proposed.
作者
汪晗
刁磊
王梦玲
荣欣
李佳珉
尤肖虎
WANG Han;DIAO Lei;WANG Mengling;RONG Xin;LI Jiamin;YOU Xiaohu(National Mobile Communications Research Laboratory,Southeast University,Nanjing 210096,China;Purple Mountain Laboratories,Nanjing 211111,China)
出处
《电信科学》
2022年第S01期77-92,共16页
Telecommunications Science
基金
国家重点研发计划项目(No.2021YFB2900300)
国家自然科学基金资助项目(No.61971127,No.61871465,No.61871122)。
关键词
工业物联网
URLLC
随机接入
资源分配
通算融合
IIoT
URLLC
random access
resource allocation
convergence of communication and computation
