Managing redundant content in bandwidth constrained wireless networks

Tuan Dao, Amit K. Roy-Chowdhury, Harsha V. Madhyastha, Srikanth V. Krishnamurthy, Tom La Porta

Research output: Chapter in Book/Report/Conference proceedingConference contribution

8 Scopus citations

Abstract

Images/videos are often uploaded in situations like disasters. This can tax the network in terms of increased load and thereby upload latency, and this can be critical for response activities. In such scenarios, prior work has shown that there is significant redundancy in the content (e.g., similar photos taken by users) transferred. By intelligently suppressing/deferring transfers of redundant content, the load can be significantly reduced, thereby facilitating the timely delivery of unique, possibly critical information. A key challenge here however, is detecting 'what content is similar,' given that the content is generated by uncoordinated user devices. Towards addressing this challenge, we propose a framework, wherein a service to which the content is to be uploaded first solicits metadata (e.g, image features) from any device uploading content. By intelligently comparing this metadata with that associated with previously uploaded content, the service effectively identifies (and thus enables the suppression of) redundant content. Our evaluations on a testbed of 20 Android smartphones and via ns3 simulations show that we can identify similar content with a 70% true positive rate and a 1% false positive rate. The resulting reduction in redundant content transfers translates to a latency reduction of 44% for unique content.

Original languageEnglish (US)
Title of host publicationCoNEXT 2014 - Proceedings of the 2014 Conference on Emerging Networking Experiments and Technologies
PublisherAssociation for Computing Machinery, Inc
Pages349-361
Number of pages13
ISBN (Electronic)9781450332798
DOIs
Publication statusPublished - Dec 2 2014
Event10th ACM International Conference on Emerging Networking Experiments and Technologies, CoNEXT 2014 - Sydney, Australia
Duration: Dec 2 2014Dec 5 2014

Publication series

NameCoNEXT 2014 - Proceedings of the 2014 Conference on Emerging Networking Experiments and Technologies

Other

Other10th ACM International Conference on Emerging Networking Experiments and Technologies, CoNEXT 2014
CountryAustralia
CitySydney
Period12/2/1412/5/14

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All Science Journal Classification (ASJC) codes

  • Computer Networks and Communications

Cite this

Dao, T., Roy-Chowdhury, A. K., Madhyastha, H. V., Krishnamurthy, S. V., & Porta, T. L. (2014). Managing redundant content in bandwidth constrained wireless networks. In CoNEXT 2014 - Proceedings of the 2014 Conference on Emerging Networking Experiments and Technologies (pp. 349-361). (CoNEXT 2014 - Proceedings of the 2014 Conference on Emerging Networking Experiments and Technologies). Association for Computing Machinery, Inc. https://doi.org/10.1145/2674005.2674988