NDLI: Ferry access points and sticky transfers: Improving communication in ferry-assisted DTNs

Content Provider	IEEE Xplore Digital Library
Author	Yasmeen, F. Huda, N. Yamada, S. Borcea, C.
Copyright Year	2012
Description	Author affiliation: Department of Informatics, National Institute of Informatics (NII), Tokyo, Japan (Huda, N.; Yamada, S.) \|\| Department of Computer Science, New Jersey Institute of Technology (NJIT), USA (Borcea, C.) \|\| Sokendai National Institute of Informatics (NII), Tokyo, Japan (Yasmeen, F.)
Abstract	Message ferries (MF) have been proposed as special nodes to improve communication in sparse, intermittent networks, such as delay-and disruption-tolerant networks (DTNs) by providing non-random message transfer opportunities to participating nodes. However, considering the mobility of nodes and the speed of the ferry, merely ensuring non-random encounters with hosts and the ferry do not guarantee optimal performance as the contact duration may not be enough to ensure adequate message transfers. The end-to-end performance could suffer significantly if message sizes are large. To address this issue, we present two methods that improve the performance of ferry-assisted DTNs: ferry access points (FAPs) and sticky transfers. FAPs supplement a ferry-assisted DTN with rendezvous points that increase the contact opportunities between mobile nodes and the ferry. Sticky transfers, upon mutual agreement, allow two encountered nodes to remain within transmission range of each other until they are able to complete necessary message transfers. This improves the number of successfully forwarded messages by allowing more messages to be transferred during the contact duration. Sticky transfers inherently reduce message transfer aborts. Our simulation results demonstrate that particular FAP placements improve the delivery ratio by as much as 25% for sparse networks and reduce the delay by as much as 40% for relatively dense networks. Sticky transfers on top of FAP-based DTNs achieved 100% delivery ratio for most situations, except in the case of highly-loaded, dense networks. Additionally, using sticky transfers resulted in lower delays by as much as 65% compared to non-sticky transfer cases.
Starting Page	1
Ending Page	7
File Size	240602
Page Count	7
File Format	PDF
ISBN	9781467312387
e-ISBN	9781467312394
e-ISBN	9781467312370
DOI	10.1109/WoWMoM.2012.6263746
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2012-06-25
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	performance evaluation sticky transfer protocol Mobile communication Vectors Routing protocols delay-tolerant networks ferry access points Relays Delay Mobile computing message ferries
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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