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A mobile peer-to-peer system for opportunistic content-centric networking
KTH, School of Electrical Engineering (EES), Communication Networks.
KTH, School of Electrical Engineering (EES), Communication Networks. KTH, School of Electrical Engineering (EES), Centres, ACCESS Linnaeus Centre.
KTH, School of Electrical Engineering (EES), Communication Networks.ORCID iD: 0000-0002-9176-3454
KTH, School of Electrical Engineering (EES), Communication Networks.
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2010 (English)In: Proceedings of the 2nd ACM SIGCOMM Workshop on Networking, Systems, and Applications on Mobile Handhelds, MobiHeld '10, Co-located with SIGCOMM 2010, 2010, 21-26 p.Conference paper (Refereed)
Abstract [en]

In this work we present a middleware architecture for a mobile peer-to-peer content distribution system. Our architecture allows wireless content dissemination between mobile nodes without relying on infrastructure support. Contents are exchanged opportunistically when nodes are within communication range. Applications access the service of our platform through a publish/subscribe interface and therefore do not have to deal with low-level opportunistic networking issues or matching and soliciting of contents. Our architecture consists of three key components. A content structure that facilitates dividing contents into logical topics and allows for efficient matching of content lookups and downloading under sporadic node connectivity. A solicitation protocol that allows nodes to solicit content meta-information in order to discover contents available at a neighboring node and to download content entries disjointedly from different nodes. An API that allows applications to access the system services through a publish/subscribe interface. In this work we describe the design and implementation of our architecture. We also discuss potential applications and present evaluation results from profiling of our system.

Place, publisher, year, edition, pages
2010. 21-26 p.
Keyword [en]
dtn, opportunistic networking, peer-to-peer, publish/subscribe
National Category
Communication Systems
URN: urn:nbn:se:kth:diva-58495DOI: 10.1145/1851322.1851330ScopusID: 2-s2.0-78149341698ISBN: 978-145030197-8OAI: diva2:473181
2010 ACM SIGCOMM Workshop on Networking, Systems, and Applications on Mobile Handhelds, MobiHeld '10, Co-located with SIGCOMM 2010; New Delhi; India; 30 August 2010 through 30 August 2010

QC 20120111

Available from: 2012-01-05 Created: 2012-01-05 Last updated: 2014-08-27Bibliographically approved
In thesis
1. Opportunistic Content Distribution: A System Design Approach
Open this publication in new window or tab >>Opportunistic Content Distribution: A System Design Approach
2012 (English)Licentiate thesis, comprehensive summary (Other academic)
Abstract [en]

The penetration of smart pocket-size devices that provide constant Internet connectivity, such as mobile phones, has significantly changed the way people obtain, view and share information. Content provision is not anymore a prerogative to professionals; individuals are not solely customers, but also act as content generators and distributors. This shift in social behavior requires changes in the way information is delivered to target audiences in an efficient, interest-based and location-aware manner.

This thesis explores a solution for opportunistic content distribution in a content-centric network that primarily targets content dissemination among mobile users in urban areas. The term ’opportunistic’ here refers to a concept which rejects the assumption of always-connected user devices and instead allows nodes to leverage sporadic contacts which occur when two neighbors come into direct radio communication range. Such communication mode allows data exchanges to occur in areas with little or no infrastructure; moreover, it is a potential solution for offloading the increasing traffic volumes observed by mobile operators.

The contributions of this thesis lie in three areas. We first outline a general architecture and design for opportunistic content-centric networking. We implement our proposal on the Google Android platform, and provide application scenarios which illustrate the potential of mobile peer-to-peer communication. Our tests however show that energy consumption turns out to be a major issue for opportunistic networks. Therefore, our second effort is in the area of energy-efficiency. We propose a dual-radio architecture for opportunistic communication, and evaluate it through extensive simulations on realistic human mobility traces. Our final study lies in the area of content dissemination when nodes in the network act altruistically and are willing to solicit data on behalf of other participants. We propose a number of relaying and caching strategies, and evaluate them through simulations in environments that exhibit different churn levels.

Place, publisher, year, edition, pages
Stockholm: KTH Royal Institute of Technology, 2012. 91 p.
Trita-EE, ISSN 1653-5146 ; 2012:036
National Category
urn:nbn:se:kth:diva-100011 (URN)978-91-7501-451-7 (ISBN)
2012-09-14, F3, 10:00 (English)
ICT - The Next Generation

QC 20120806

Available from: 2012-08-07 Created: 2012-08-02 Last updated: 2013-09-09Bibliographically approved

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