NDLI: Joint design of device to device caching strategy and incentive scheme in mobile edge networks

Content Provider	IET Digital Library
Author	Wang, Shuo Zhang, Xing Wang, Lin Yang, Juwo Wang, Wenbo
Abstract	Caching at the user devices is a key technology to alleviate backhaul load and improve users' quality of experience in mobile edge networks. However, due to the concern of privacy and limited battery life, users are not willing to share their resources. In this study, the authors jointly design the caching strategy and incentive scheme to encourage the users to share their storage resources and improve the social welfare of the cellular network. First, the user equipments (UEs) are classified into different types according to their preference to share cache resources. Then, based on contract theory, an optimisation problem with necessary constraints is formulated aiming at maximising the base station (BS)'s utility. The reward the BS pays for a UE is based on the total amount of contents it shares with other UEs, which is related to the caching policy of UEs. A heuristic caching strategy is proposed and the optimal contract is obtained. Finally, the system performance of the proposed solution is analysed, simulation results show that the incentive scheme can improve the willingness of users to share contents, and the proposed caching strategy contributes more to the social welfare compared with two baseline caching schemes: fair caching and random caching.
Starting Page	1728
Ending Page	1736
Page Count	9
ISSN	17518628
Volume Number	12
e-ISSN	17518636
Issue Number	Issue 14, Aug (2018)
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/iet-com/12/14
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/10.1049/iet-com.2017.1044
Journal	IET Communications
Publisher Date	2018-05-02
Access Restriction	Open
Rights Holder	© The Institution of Engineering and Technology
Subject Keyword	Backhaul Load Base Station Utility Maximisation Cache Resource Sharing Cellular Network Cellular Radio Contract Theory Data Privacy Device-to-device Caching Strategy Heuristic Caching Strategy Incentive Scheme Mobile Computing Mobile Edge Network Mobile Radio System Optimisation Optimisation Problem Optimisation Technique Quality of Experience Quality-of-experience Social Welfare Storage ReSource Telecommunication Security UE Caching Policy User Equipments
Content Type	Text
Resource Type	Article
Subject	Electrical and Electronic Engineering Computer Science Applications

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1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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