NDLI: Energy-efficient cooperative download for smartphone users through contact time estimation

Content Provider	IEEE Xplore Digital Library
Author	Yasumoto, K. Takamatsu, Y. Weihua Sun Ito, M.
Copyright Year	2012
Description	Author affiliation: Graduate School of Information Science, Nara Institute of Science and Technology, Ikoma, 630-0192, Japan (Yasumoto, K.; Takamatsu, Y.; Weihua Sun; Ito, M.)
Abstract	In this paper, aiming to reduce cellular network load, we propose a cooperative download method by which user terminals exchange fragments of a content called chunks through short-range wireless communication like Bluetooth or Wi-Fi with other user terminals who want the same content. In order to reduce the cellular network load, it is necessary to receive as many chunks as possible via short-range wireless communication. Our basic idea is to predict contact time when other user terminals get within a range of short-range wireless communication and to obtain chunks efficiently from other user terminals. To predict the contact time, each terminal periodically registers information of its location and retaining and requiring chunks with a server in the fixed network. The server calculates for each terminal the probability and time to contact other terminals so that the terminal can determine its communication schedule with those meeting terminals to obtain chunks efficiently. Through computer simulations with measured energy consumption parameters, we confirmed that terminals using our method obtained from other terminals 50% more chunks with 20 % less energy consumption than the method of greedily collecting chunks by always turning on the wireless device.
Starting Page	324
Ending Page	332
File Size	809107
Page Count	9
File Format	PDF
ISBN	9781467314299
ISSN	21604886
e-ISBN	9781467314305
DOI	10.1109/WiMOB.2012.6379094
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2012-10-08
Publisher Place	Spain
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Wireless communication Energy consumption IEEE 802.11 Standards Peer to peer computing Probability Mobile communication Servers
Content Type	Text
Resource Type	Article

Sl.	Authority	Responsibilities	Communication Details
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
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in

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