NDLI: Are smartphones suited for DTN networking? A methodological teardown of smartphones' WiFi performance

Content Provider	IEEE Xplore Digital Library
Author	Distl, B. Legendre, F.
Copyright Year	2015
Description	Author affiliation: Comput. Eng. & Networks Lab., ETH Zurich, Zurich, Switzerland (Distl, B.) \|\| Uepaa AG, Zurich, Switzerland (Legendre, F.)
Abstract	Opportunistic networks are formed by people carrying mobile devices with wireless capabilities. When in mutual transmission range (or contact), nodes of such networks use device-to-device communication to automatically exchange data, without requiring fixed infrastructure. A few apps have already proven opportunistic networking to be a useful communication paradigm. While contacts have been studied theoretically, in practice, they depend to a large extent on the characteristics of the mobile devices, typically smartphones. Up to our knowledge, no study has considered the radio characteristics of current smartphones acting as opportunistic nodes yet. In this paper, we hence investigate the WiFi radio performances of smartphones for opportunistic networking. We start by revisiting the classical link budget by adding the impact of the phone's carrier. We then perform extensive measurements to fully characterize all components of the link budget between two smartphones. We find that the Two-Ray propagation model is the best fit as a smartphone propagation model. Eventually, to assess the capacity of opportunistic networking we evaluate a simple scenario of two pedestrians crossing on a path. In this scenario, we show that a maximum range of more than 400m can be achieved and that during the resulting contact opportunity a total of 171 MB goodput can be transferred.
Starting Page	90
Ending Page	95
File Size	414994
Page Count	6
File Format	PDF
ISBN	9783901882746
DOI	10.1109/WIOPT.2015.7151058
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2015-05-25
Publisher Place	India
Access Restriction	Subscribed
Rights Holder	IFIP
Subject Keyword	Antenna measurements IEEE 802.11 Standards Receivers Attenuation Loss measurement Smart phones Antennas
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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