干旱区生态环境知识资源中心(Arid): MEC-Empowered Non-Terrestrial Network for 6G Wide-Area Time-Sensitive Internet of Things

Arid

DOI	10.1016/j.eng.2021.11.002
	MEC-Empowered Non-Terrestrial Network for 6G Wide-Area Time-Sensitive Internet of Things
	Liu, Chengxiao; Feng, Wei; Tao, Xiaoming; Ge, Ning
通讯作者	Feng, W
来源期刊	ENGINEERING
ISSN	2095-8099
EISSN	2096-0026
出版年	2022
卷号	8 页码:96-107
英文摘要	In the upcoming sixth-generation (6G) era, the demand for constructing a wide-area time-sensitive Internet of Things (IoT) continues to increase. As conventional cellular technologies are difficult to directly use for wide-area time-sensitive IoT, it is beneficial to use non-terrestrial infrastructures, including satellites and unmanned aerial vehicles (UAVs). Thus, we can build a non-terrestrial network (NTN) using a cell-free architecture. Driven by the time-sensitive requirements and uneven distribution of IoT devices, the NTN must be empowered using mobile edge computing (MEC) while providing oasis oriented on-demand coverage for devices. Nevertheless, communication and MEC systems are coupled with each other under the influence of a complex propagation environment in the MEC-empowered NTN, which makes it difficult to coordinate the resources. In this study, we propose a process-oriented framework to design communication and MEC systems in a time-division manner. In this framework, large-scale channel state information (CSI) is used to characterize the complex propagation environment at an affordable cost, where a nonconvex latency minimization problem is formulated. Subsequently, the approximated problem is provided, and it can be decomposed into sub-problems. These sub-problems are then solved iteratively. The simulation results demonstrated the superiority of the proposed process-oriented scheme over other algorithms, implied that the payload deployments of UAVs should be appropriately predesigned to improve the efficiency of using resources, and confirmed that it is advantageous to integrate NTN with MEC for wide-area time-sensitive IoT. (c) 2021 THE AUTHORS. Published by Elsevier LTD on behalf of Chinese Academy of Engineering and Higher Education Press Limited Company. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/).
英文关键词	Cell-free Mobile edge computing Non-terrestrial networks Sixth-generation Wide-area time-sensitive IoT
类型	Article
语种	英语
开放获取类型	Green Submitted, gold
收录类别	SCI-E
WOS记录号	WOS:000788434800014
WOS关键词	RANDOM-ACCESS ; UPLINK POWER ; MIMO SYSTEMS ; UAV ; IOT ; OPTIMIZATION ; SMART ; COMMUNICATION ; ARCHITECTURE ; ALLOCATION
WOS类目	Engineering, Multidisciplinary
WOS研究方向	Engineering
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/392435
推荐引用方式 GB/T 7714	Liu, Chengxiao,Feng, Wei,Tao, Xiaoming,et al. MEC-Empowered Non-Terrestrial Network for 6G Wide-Area Time-Sensitive Internet of Things[J],2022,8:96-107.
APA	Liu, Chengxiao,Feng, Wei,Tao, Xiaoming,&Ge, Ning.(2022).MEC-Empowered Non-Terrestrial Network for 6G Wide-Area Time-Sensitive Internet of Things.ENGINEERING,8,96-107.
MLA	Liu, Chengxiao,et al."MEC-Empowered Non-Terrestrial Network for 6G Wide-Area Time-Sensitive Internet of Things".ENGINEERING 8(2022):96-107.