Technology of Network & Communication
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App. Res. of Comp. Printed Article
Vol. 39, 2022 No. 8
2459-2464,2468

Research on cache aided NOMA power allocation scheme in software defined vehicular network

Gu Jinyuan1,2
Zhang Guo'an2
Zhang Honglai1
1. Kangda College of Nanjing Medical University, Lianyungang Jiangsu 222000, China
2. School of Information Science & Technology, Nantong University, Nantong Jiangsu 226019, China
DOI: 10.19734/j.issn.1001-3695.2022.01.0008

Abstract

Due to the increasing demand for rich multimedia services, Internet of Vehicles needs to provide massive equipment connections to meet the needs of high spectrum efficiency and low delay. SDN, caching and NOMA technologies are considered as potential solutions to effectively solve these key challenges. Therefore, this paper proposed a cache aided NOMA power allocation scheme for software defined vehicular network. Firstly, according to the characteristics of vehicles always moving at high speed in Internet of Vehicles, the scheme proposed a new cluster head selection algorithm. The arriving road traffic would be predicted with the help of SDN to realize adaptive vehicle clustering. Secondly, the scheme introduced a cache aided NOMA strategy. Each vehicle used NOMA principle to cache and request files in the file cache stage. Thirdly, for the two cluster head vehicle communication scenarios under the condition of double Nakagami-m fading, the scheme proposed an optimal power allocation strategy. The optimization problem was formulated as finding the optimal power curve of each vehicle, so as to maximize the probability of successfully decoding the target file on each vehicle. Finally, numerical simulation and theoretical analysis show that the performance of the proposed cache aided NOMA power allocation scheme is significantly better than the conventional NOMA and cache aided OMA.

Foundation Support

国家自然科学基金资助项目(61971245)
江苏省第十六批“六大人才高峰”高层次人才选拔培养资助项目(XYDXX-245)
连云港市第六期“521高层次人才培养工程”培养对象资助项目
江苏高校哲学社会科学研究资助项目(2021SJA2492)
教育部产学合作协同育人项目(202102311004)
南京医科大学康达学院科研人才培养计划资助项目

Publish Information

DOI: 10.19734/j.issn.1001-3695.2022.01.0008
Publish at: Application Research of Computers Printed Article, Vol. 39, 2022 No. 8
Section: Technology of Network & Communication
Pages: 2459-2464,2468
Serial Number: 1001-3695(2022)08-037-2459-06

Publish History

[2022-03-15] Accepted Paper
[2022-08-05] Printed Article

Cite This Article

顾金媛, 章国安, 张鸿来. 软件定义车联网中缓存辅助的NOMA功率分配方案研究 [J]. 计算机应用研究, 2022, 39 (8): 2459-2464,2468. (Gu Jinyuan, Zhang Guo'an, Zhang Honglai. Research on cache aided NOMA power allocation scheme in software defined vehicular network [J]. Application Research of Computers, 2022, 39 (8): 2459-2464,2468. )

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  • Application Research of Computers Monthly Journal
  • Journal ID ISSN 1001-3695
    CN  51-1196/TP

Application Research of Computers, founded in 1984, is an academic journal of computing technology sponsored by Sichuan Institute of Computer Sciences under the Science and Technology Department of Sichuan Province.

Aiming at the urgently needed cutting-edge technology in this discipline, Application Research of Computers reflects the mainstream technology, hot technology and the latest development trend of computer application research at home and abroad in a timely manner. The main contents of the journal include high-level academic papers in this discipline, the latest scientific research results and major application results. The contents of the columns involve new theories of computer discipline, basic computer theory, algorithm theory research, algorithm design and analysis, blockchain technology, system software and software engineering technology, pattern recognition and artificial intelligence, architecture, advanced computing, parallel processing, database technology, computer network and communication technology, information security technology, computer image graphics and its latest hot application technology.

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