Localized iterative design for language learning in underdeveloped regions: the PACE framework
Proceedings of the SIGCHI Conference on Human Factors in Computing Systems
Epothecary: cost-effective drug pedigree tracking and authentication using mobile phones
Proceedings of the 1st ACM workshop on Networking, systems, and applications for mobile handhelds
ELMR: efficient lightweight mobile records
Proceedings of the 1st ACM workshop on Networking, systems, and applications for mobile handhelds
Avaaj Otalo: a field study of an interactive voice forum for small farmers in rural India
Proceedings of the SIGCHI Conference on Human Factors in Computing Systems
Smart Connect: last mile data connectivity for rural health facilities
Proceedings of the 4th ACM Workshop on Networked Systems for Developing Regions
Proceedings of the 4th ACM Workshop on Networked Systems for Developing Regions
SMS-based web search for low-end mobile devices
Proceedings of the sixteenth annual international conference on Mobile computing and networking
NSDR '11 Proceedings of the 5th ACM workshop on Networked systems for developing regions
Hyke: a low-cost remote attendance tracking system for developing regions
NSDR '11 Proceedings of the 5th ACM workshop on Networked systems for developing regions
An asymmetric communications platform for knowledge sharing with low-end mobile phones
Proceedings of the 24th annual ACM symposium adjunct on User interface software and technology
VillageCell: cost effective cellular connectivity in rural areas
Proceedings of the Fifth International Conference on Information and Communication Technologies and Development
Network traffic locality in a rural African village
Proceedings of the Fifth International Conference on Information and Communication Technologies and Development
Local, sustainable, small-scale cellular networks
Proceedings of the Sixth International Conference on Information and Communication Technologies and Development: Full Papers - Volume 1
Bringing visibility to rural users in Cote d'Ivoire
Proceedings of the Sixth International Conference on Information and Communications Technologies and Development: Notes - Volume 2
An experiment in reducing cellular base station power draw with virtual coverage
Proceedings of the 4th Annual Symposium on Computing for Development
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Cellular networks have revolutionized the way people communicate in rural areas. At the same time, deployment of commercial-grade cellular networks in areas with low population density, such as in rural sub-Saharan Africa, is prohibitively expensive relative to the return of investment. As a result, 48\% of the rural population in Africa remains disconnected. To address this problem, we design a local cellular network architecture, Kwiizya, that provides basic voice and text messaging services in rural areas. Our system features an interface for development of text message based applications that can be leveraged for improved health care, education and support of local businesses. We deployed an instance of Kwiizya in the rural village of Macha in Zambia. Our deployment utilizes the existing long distance Wi-Fi network in the village for inter-base station communication to provide high quality services with minimal infrastructure requirements. In this paper we evaluate Kwiizya in-situ in Macha and show that the network maintains low delay and jitter (20ms and 3ms, respectively) for voice call traffic, while providing high call Mean Opinion Score of 3.46, which is the theoretical maximum supported by our system.