User-centric content sharing via cache-enabled device-to-device communication

doi:10.1016/j.jnca.2018.04.017

	User-centric content sharing via cache-enabled device-to-device communication
	Sun, Sheng 1,2; Liu, Min 1; Jiao, Zhenzhen 1,2; Pang, Xiao 1,2; Chen, Shuang 1,2
	2018-08-01
发表期刊	JOURNAL OF NETWORK AND COMPUTER APPLICATIONS
ISSN	1084-8045
卷号	115 页码:103-115
摘要	Cache-enabled device-to-device (D2D) communication has emerged as a promising paradigm for caching popular contents at user devices and using D2D communication among adjacent users to relieve cellular traffic overload. To maximize traffic offloading, optimal content-selection for caching and helper-receiver matching are two key concerns. In this paper, we deal with the two key issues by leveraging user characteristics, which are crucial to D2D content sharing but often omitted by existing work in this field. We first propose a comprehensive model that profiles user characteristics including user preference, user activity degree, and user relationship. To provide an accurate estimation of user relationship, a new metric named expected correlation coefficient (ECC) is further proposed, which can reveal the potential offloading opportunities behind the contacts between users. We then design a novel user-centric caching policy that integrates the above-mentioned models into content caching policy to optimize the caching efficiency. Furthermore, we propose an online learning algorithm by leveraging the Combinatorial Multi-Armed Bandits (CMAB) method to achieve efficient helper-receiver matching among users. Experiments based on real-world traces and content requesting records were conducted. The results demonstrate that when compared with existing algorithms, our proposed algorithm improves the offloading ratio by nearly 10% and the system utility approximately by 20%.
关键词	Cache-enabled device-to-device communication Content sharing User characteristics Content popularity
DOI	10.1016/j.jnca.2018.04.017
收录类别	SCI
语种	英语
资助项目	National Natural Science Foundation of China[61472404] ; National Natural Science Foundation of China[61472402] ; National Natural Science Foundation of China[61501125] ; National Natural Science Foundation of China[61502457]
WOS研究方向	Computer Science
WOS类目	Computer Science, Hardware & Architecture ; Computer Science, Interdisciplinary Applications ; Computer Science, Software Engineering
WOS记录号	WOS:000435622800009
出版者	ACADEMIC PRESS LTD- ELSEVIER SCIENCE LTD
引用统计	被引频次：9[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/2XEOYT63/5157
专题	中国科学院计算技术研究所期刊论文_英文
通讯作者	Liu, Min
作者单位	1.Chinese Acad Sci, Inst Comp Technol, State Key Lab Comp Architecture, Beijing 100190, Peoples R China 2.Univ Chinese Acad Sci, Sch Comp & Control Engn, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Sun, Sheng,Liu, Min,Jiao, Zhenzhen,et al. User-centric content sharing via cache-enabled device-to-device communication[J]. JOURNAL OF NETWORK AND COMPUTER APPLICATIONS,2018,115:103-115.
APA	Sun, Sheng,Liu, Min,Jiao, Zhenzhen,Pang, Xiao,&Chen, Shuang.(2018).User-centric content sharing via cache-enabled device-to-device communication.JOURNAL OF NETWORK AND COMPUTER APPLICATIONS,115,103-115.
MLA	Sun, Sheng,et al."User-centric content sharing via cache-enabled device-to-device communication".JOURNAL OF NETWORK AND COMPUTER APPLICATIONS 115(2018):103-115.