Information-centric content retrieval for delay-tolerant networks

The shift from host-centric to information-centric networking (ICN) promises seamless communication in mobile networks. However, most existing works either consider well-connected networks with high node density or introduce modifications to ICN message processing for delay-tolerant networking (DTN)...

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Bibliographic Details
Published inComputer networks (Amsterdam, Netherlands : 1999) Vol. 107; pp. 194 - 207
Main Authors Anastasiades, Carlos, Schmid, Tobias, Weber, Jürg, Braun, Torsten
Format Journal Article
LanguageEnglish
Published Amsterdam Elsevier B.V 09.10.2016
Elsevier Sequoia S.A
Subjects
Agent-based content retrieval
CCN
Changing environments
Communication
Computer networks
Delay
Delay-tolerant
DTN
Information retrieval
Information-centric
Intelligent agents
Interoperability
Message processing
Mobile communication systems
Mobile communications networks
Network flow problem
Nodes
Routing
Studies
Wireless networks
Wireless routing
Agent-based content retrieval
Delay-tolerant
Information-centric
Wireless routing
DTN
CCN
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Summary:The shift from host-centric to information-centric networking (ICN) promises seamless communication in mobile networks. However, most existing works either consider well-connected networks with high node density or introduce modifications to ICN message processing for delay-tolerant networking (DTN). In this work, we present agent-based content retrieval, which provides information-centric DTN support as an application module without modifications to ICN message processing. This enables flexible interoperability in changing environments. If no content source can be found via wireless multi-hop routing, requesters may exploit the mobility of neighbor nodes (called agents) by delegating content retrieval to them. Agents that receive a delegation and move closer to content sources can retrieve data and return it back to requesters. We show that agent-based content retrieval may be even more efficient in scenarios where multi-hop communication is possible. Furthermore, we show that broadcast communication may not be necessarily the best option since dynamic unicast requests have little overhead and can better exploit short contact times between nodes (no broadcast delays required for duplicate suppression).
ISSN:1389-1286
1872-7069
DOI:10.1016/j.comnet.2016.03.006