NDLI: Message Dissemination in Delay-Tolerant Networks with Probabilistic Encounters

Content Provider	IEEE Xplore Digital Library
Author	Jianwei Niu Yazhi Liu Lei Shu
Copyright Year	2012
Abstract	For some applications of Delay-Tolerant Networks (DTNs), such as publish/subscribe systems, messages do not have explicit destination addresses. In those cases, message routing is driven by message content instead of by destination addresses. In this paper, to achieve more efficient and robust message dissemination, a Content Encounter Probability based Message Dissemination (CEPMD) scheme for DTNs is proposed. In CEPMD, we use request predicates to represent subscribers' interests and propagate request predicate messages over the network. A request predicate is tagged with an ep, representing the probability that the predicate's host node will encounter the destination node. Content messages are forwarded to the nodes that have a request predicate that matches the content message and have a greater ep value. The corresponding content messages can be forwarded to the subscriber along the probability gradient of predicates. The experimental results show that CEPMD outperforms the state-of-the-art DTN algorithms on both message delivery ratio and delivery delay.
Starting Page	330
Ending Page	335
File Size	348963
Page Count	6
File Format	PDF
ISBN	9781467318884
ISSN	15244547
DOI	10.1109/WETICE.2012.16
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2012-06-25
Publisher Place	France
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Peer to peer computing Communities Relays Delay Educational institutions Subscriptions Protocols Data dissemination Delay tolerant networks Publish/subscribe Encounter probability Predicate
Content Type	Text
Resource Type	Article
Subject	Hardware and Architecture Software

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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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