Joint caching and computing resource allocation for task offloading in vehicular networks

doi:10.1049/iet-com.2020.0100

	Joint caching and computing resource allocation for task offloading in vehicular networks
	Wang, Zhi 1,2,3; Hou, Ronghui 1,2
	2020-12-22
发表期刊	IET COMMUNICATIONS
ISSN	1751-8628
卷号	14 期号:21 页码:3820-3827
摘要	To meet the requirement of constrained delay and computation resource of the future vehicular networks, it is imperative to develop efficient content caching strategy and computation resource allocation strategy in mobile edge computing (MEC) servers. In the proposed network framework, since the caching capacity and computing resource of each MEC are limited, and the coverage areas of MECs are overlapped, the vehicular networks have to decide what contents to cache, how to offload tasks and how much computing resource needs to be allocated for each task. In this study, in order to jointly tackle these issues, we formulate caching strategy, offloading decision and computing resource allocation coordinately as a mixed integer non-linear programming (MINLP) problem. To solve the MINLP problem, we divide it into two subproblems. Firstly, we investigate a balanced and efficient caching strategy based on similarity in vehicular networks. Secondly, we apply McCormick Envelopes to convert MINLP problem into LP problem, and then adopt improved branch and bound algorithm to obtain the optimal offloading decision and computing resource allocation strategy. Simulation results indicate that the proposed schemes have a good performance in reducing economic cost under the deadline of each task.
关键词	cellular radio cloud computing optimisation resource allocation cache storage linear programming mobile computing nonlinear programming integer programming joint caching computing resource future vehicular networks computation intensive efficient content caching strategy computation resource allocation strategy mobile edge computing servers MEC caching content maximising caching performance caching capacity balanced caching strategy efficient caching strategy
DOI	10.1049/iet-com.2020.0100
收录类别	SCI
语种	英语
资助项目	National Natural Science Foundation of China[61571351] ; State Key Laboratory of Computer Architecture (ICT, CAS)[CARCH201904] ; Major Research plan of the Shaanxi Science Foundation of China[2019ZDLGY12-08] ; 111 project[B16037] ; [ZD2004]
WOS研究方向	Engineering
WOS类目	Engineering, Electrical & Electronic
WOS记录号	WOS:000621654900011
出版者	WILEY
引用统计	被引频次：2[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://119.78.100.204/handle/2XEOYT63/16216
专题	中国科学院计算技术研究所期刊论文_英文
通讯作者	Hou, Ronghui
作者单位	1.Xidian Univ, Sch Cyber Engn, Xian, Peoples R China 2.Chinese Acad Sci, Inst Comp Technol, State Key Lab Comp Architecture, Beijing, Peoples R China 3.Xiaomi Commun Co Ltd, Beijing, Peoples R China
推荐引用方式 GB/T 7714	Wang, Zhi,Hou, Ronghui. Joint caching and computing resource allocation for task offloading in vehicular networks[J]. IET COMMUNICATIONS,2020,14(21):3820-3827.
APA	Wang, Zhi,&Hou, Ronghui.(2020).Joint caching and computing resource allocation for task offloading in vehicular networks.IET COMMUNICATIONS,14(21),3820-3827.
MLA	Wang, Zhi,et al."Joint caching and computing resource allocation for task offloading in vehicular networks".IET COMMUNICATIONS 14.21(2020):3820-3827.