tailieunhanh - Lowcost Communication for Rural Internet Kiosks Using Mechanical Backhaul

Rural kiosks in developing countries provide a variety of services such as birth, marriage, and death certificates, electricity bill collection, land records, email services, and consulting on medical and agricultural problems. Fundamental to a kiosk’s operation is its connection to the Internet. Network connectivity today is primarily provided by dialup telephone, although Very Small Aperture Terminals (VSAT) or long-distance wireless links are also being deployed. These solutions tend to be both expensive and failure prone. Instead, we propose the use of buses and cars as ‘mechanical backhaul’ devices to carry data to and from a village and an internet gateway. Building on the pioneering lead of Daknet [15], and extending the Delay. | Low-cost Communication for Rural Internet Kiosks Using Mechanical Backhaul A. Seth D. Kroeker M. Zaharia S. Guo and S. Keshav School of Computer Science University of Waterloo Waterloo ON Canada N2L 3G1 ABSTRACT Rural kiosks in developing countries provide a variety of services such as birth marriage and death certificates electricity bill collection land records email services and consulting on medical and agricultural problems. Fundamental to a kiosk s operation is its connection to the Internet. Network connectivity today is primarily provided by dialup telephone although Very Small Aperture Terminals VSAT or long-distance wireless links are also being deployed. These solutions tend to be both expensive and failure prone. Instead we propose the use of buses and cars as mechanical backhaul devices to carry data to and from a village and an internet gateway. Building on the pioneering lead of Daknet 15 and extending the Delay Tolerant Networking Research Group architecture 24 we describe a comprehensive solution encompassing naming addressing forwarding routing identity management application support and security. We believe that this architecture not only meets the top-level goals of low cost and robustness but also exposes fundamental architectural principles necessary for any such design. We also describe our experiences in implementing a prototype of this architecture. Categories and Subject Descriptors Network Architecture and Design Store and forward networks Wireless communication General Terms Design Economics Keywords System design delay tolerant networks mechanical backhaul rural communication low cost 1. INTRODUCTION Rural kiosks in developing countries provide a variety of services such as birth and death certificates bill collection email land records and consulting on medical and agricultural problems. They are well-suited to this purpose because both the capital and operational expenses of the kiosk are spread among a fairly large user base .