NDLI: Optimal Relay Placement for Indoor Sensor Networks

Content Provider	IEEE Xplore Digital Library
Author	Cuiyao Xue Yanmin Zhu Lei Ni Minglu Li Bo Li
Copyright Year	2012
Abstract	To many sensor networks, the robust operation dependson deploying relays to ensure wireless coverage. This paperconsiders the crucial problem of optimal relay placement for wirelesssensor networks in indoor environments. The placement of relaysis essential for ensuring communication quality and data collection.A number of existing algorithms have been proposed forensuring full sensing coverage and network connectivity. These algorithmscan hardly be applied to indoor environments because ofthe complexity of indoor environments, in which a radio signal canbe dramatically degraded by obstacles like walls. We firstly theoreticallyprove that the indoor relay placement problem is NP-hard.We then predict radio coverage of a given relay deployment in indoorenvironments, and then propose a efficient greedy algorithmfor computing the relay deployment locations for required coveragequality. This algorithm is proved to provide a factor approximationto the theoretical optimum, where and n is the number of all grid points. Experimental results demonstrate the proposed algorithm achieves betterperformance than two other algorithms. To our knowledge, ourwork is the very first that study the optimal relay placement problemfor sensor networks in complex indoor environments.
Starting Page	209
Ending Page	215
File Size	465036
Page Count	7
File Format	PDF
ISBN	9781467316934
DOI	10.1109/DCOSS.2012.62
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2012-05-16
Publisher Place	China
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Algorithm design and analysis Economic indicators Indoor environments Sensor networks Approximation algorithms Sensors Indoor environment Approximation methods Relays Optimal
Content Type	Text
Resource Type	Article

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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
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
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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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