NDLI: Joint caching and sleeping optimisation for D2D-aided ultra-dense network

Content Provider	IET Digital Library
Author	Pei, Li Shen, Gao Yaoyue, Hu Zhiwen, Pan Xiaohu, You
Abstract	Device-to-device (D2D) communication provides the communication of the users in the vicinity and thereby decreases end-to-end delay and power consumption. More importantly, D2D communication enables offloading the traffic load of the base station (BS), and it is very suitable for caching, especially in ultra dense networks (UDNs). In this paper, a joint optimisation problem of collaborative caching and sleeping strategy based on energy-delay tradeoff for D2D-aided UDN is investigated. To solve the joint optimization problem, we decompose it into sleeping sub-problem and collaborative caching sub-problem. For sleeping subproblem, the optimal sleeping ratio is first derived, then, a delay-aware sleeping strategy is proposed to obtain the local optimal sleeping scheme. For the collaborative caching subproblem, the suboptimal solution is obtained by distributed iterative method. In each iteration step, the suboptimal solution is derived by solving the combinatorial optimisation problem under Karush-Kuhn-Tucker conditions. Simulation results show that the proposed algorithms can coverage to the global solution. It also demonstrate that increasing caching capacity shortened mean delay, and benefitting from collaborative caching, delay performance and energy saving can be improved significantly. Moreover, it can be seen that combining the sleeping strategy with collaborative caching further reduced energy consumption by a considerable amount.
Starting Page	1
Ending Page	10
Page Count	10
ISSN	17518628
Volume Number	14
e-ISSN	17518636
Issue Number	Issue 1, Jan (2020)
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/iet-com/14/1
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/10.1049/iet-com.2019.0466
Journal	IET Communications
Publisher Date	2019-08-29
Access Restriction	Open
Rights Holder	© The Institution of Engineering and Technology
Subject Keyword	Caching Capacity Cell BS Cellular Radio Collaborative Caching Subproblem Combinatorial Optimisation Problem Cost Minimisation Problem D2D Communication D2D Transmitter D2D-aided Ultradense Network Delay-aware Sleeping Strategy Derived Local Optimal Small Cell Caching Scheme Device-to-device Communication End-to-end Delay Heterogeneous Caching Scheme Interpolation And Function Approximation Iterative Method Joint Optimisation Problem Karush–Kuhn–Tucker Conditions Local Optimal Sleeping Ratio Scheme Minimisation Mobile Handsets Mobile Radio System Numerical Analysis Numerical Approximation And Analysis Optimisation Technique Probability Theory Radio Network Radio Transmitters Sleeping Optimisation Subproblem Statistics Stochastic Linearised SCUC Stochastic Traffic Model Suboptimal Caching Ratios System Energy Consumption Telecommunication Power Management Telecommunication Traffic Ultradense Small Cell Network
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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