A delay-tolerant network architecture for challenged internets
Proceedings of the 2003 conference on Applications, technologies, architectures, and protocols for computer communications
Routing in a delay tolerant network
Proceedings of the 2004 conference on Applications, technologies, architectures, and protocols for computer communications
Turning the postal system into a generic digital communication mechanism
Proceedings of the 2004 conference on Applications, technologies, architectures, and protocols for computer communications
Low-cost communication for rural internet kiosks using mechanical backhaul
Proceedings of the 12th annual international conference on Mobile computing and networking
A data-oriented (and beyond) network architecture
Proceedings of the 2007 conference on Applications, technologies, architectures, and protocols for computer communications
I tube, you tube, everybody tubes: analyzing the world's largest user generated content video system
Proceedings of the 7th ACM SIGCOMM conference on Internet measurement
LIPSIN: line speed publish/subscribe inter-networking
Proceedings of the ACM SIGCOMM 2009 conference on Data communication
Proceedings of the 5th international conference on Emerging networking experiments and technologies
ICTD for healthcare in Ghana: two parallel case studies
ICTD'09 Proceedings of the 3rd international conference on Information and communication technologies and development
COCO: a web-based data tracking architecture for challenged network environments
Proceedings of the First ACM Symposium on Computing for Development
WiLdnet: design and implementation of high performancewifi based long distance networks
NSDI'07 Proceedings of the 4th USENIX conference on Networked systems design & implementation
A comprehensive data management framework for opportunistic communication on mobile phones
Proceedings of the 3rd ACM Symposium on Computing for Development
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Decreasing prices of digital cameras, phones and video cameras have made these devices accessible to low-income communities and to development organizations working in these communities. As a result, the social media revolution around user generated content on YouTube and Facebook has found equivalents in rural areas; here, community radio, community video, and interactive voice based systems are used for social media instead of Internet websites to host user generated content. We observe that there is much benefit to be gained from sharing this content across different rural locations, but it is hard due to unavailable or flaky Internet access in these areas. In this paper, we analyze a 1000+ video content production and consumption dataset from a nonprofit organization that specializes in participatory video production about agricultural best practices, and observe that solutions to connectivity in rural areas could greatly benefit from caching of content since much production and consumption tends to be local. Based on this insight, we propose a delay tolerant network architecture for content distribution, that recognizes content objects as first class entities cachable at different nodes in the network, and uses an always-on control channel on GPRS/EDGE connections to assist in the routing of data. Finally, we simulate the dataset in accordance with our architectural design to study the performance of different routing and caching algorithms in terms of delivery latency and other metrics for 6 different districts. We find that our proposed architecture is suitable to provide content distribution services with minimal investments in IT infrastructure, and we plan to do a small-scale field deployment shortly.