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DakNet PPT


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DakNet PPT

  2. 2. What do you do when you want to provideDigital communication services Voice mail Digital documents E-mail Isolated Villages No Electricity No Telephone How ?
  3. 3. But How when there's not even a proper road to the village?? Why, on motorcycles! if that doesn't work either, try bicycles.
  4. 4. 19/08/11
  5. 5. What is DakNet ?  Developed by MIT Media Lab researchers.  Derives from the Hindi word for “post” or “postal,”.  It is an ad hoc network.  It uses wireless technology to provide asynchronous digital connectivity.  Combines a physical means of transportation with wireless data transfer  Simple, low- cost, and easy to deploy.
  6. 6. Power source DakNet runs on computers that are powered by solar panels fixed on rooftops or generators attached to a bicycle wheel.
  7. 7. Architecture of DakNet Components of Architecture  Hub  Kiosk  Mobile access point
  8. 8. MAP(Mobile Access Point) A movable transceiver, which may periodically receive and/or transmit digitized information to and from kiosk and periodically received and/or transmit, digitized information to and from a server acting as the gateway to the internet and/or telephony network(s).
  9. 9. Kiosk The facilities at a physically location where a client computer may be available for customer access or the physical locations where a physically movable device may be made available for customer access. A client computer kiosk may be sited to enable effective transmission to and from a Mobile Access Point.
  10. 10. Hub(Internet Access Point) A Computer device with direct, real-time connection to the Internet and/or other national and/or international communications infrastructure or a common connection point for devices in a network. Hubs are commonly used to connect segments of a LAN. A hub contains multiple ports.
  11. 11. How it works ? • Transmits data over short point-to-point links between kiosks and portable storage devices, called Mobile Access Point(MAPs). • MAPs are mounted on and powered by a bus, a motorcycle, or even a bicycle with a small generator. • MAP physically transports data among public kiosks and private communications devices and between kiosks and a hub. • Low-cost Wi-Fi radio transceivers automatically transfer the data stored in the MAP at high bandwidth for each point-to-point connection.
  12. 12. Features • The primary advantages of a VAN(Value-added Network) are its low cost and ease of set up. • No laying of copper or fiber to each village or trying to establish costly long- distance wireless links or satellite uplinks. • A VAN takes advantage of existing transportation infrastructure to create an affordable broadband network. • Latency or delay of this network is higher than other networks. • Higher per day data throughput than other low-bandwidth technologies such as telephone modems.
  13. 13. Seamless Scalability • DakNet provides the ability to seamlessly upgrade to the always-on broadband connectivity. • The wireless broadband connectivity provides sophisticated services like voice over internet protocol which allows “normal” real-time telephony. • DakNet supports easy user-interface and low cost hardware that allows individuals, with no professional skills of using communication devices, operate the software and get connected.
  14. 14. DakNet Economics • A capital investment of $15 million could equip each of India’s 50,000 rural buses with MAP and thereby provide connectivity to about 750 million people living in rural India. • Costs for the interactive user devices that DakNet supports—including thin-client terminals, PDAs, and VoIP telephones—may also soon become far more affordable than traditional PCs or WLL equipment.
  15. 15. Advantages Real-time communications not required for public kiosks 1. Communications tend to be asynchronous 2. Villager’s trade –off latency for affordability Leverages two major trends 1. Cost of wireless broad (Wi-Fi) 2. Cost of digital storage Easy to implement on widespread basis Lower uplink costs and maintenance requirements Bandwidth does not decrease with distance Seed infrastructure that is scalable with demand Reduced regulatory challenges and licensing fees
  16. 16. Disadvantages • Token ring constraint if a lower tier goes down, all higher tier goes down. • Experience and Expertise person can only handled kiosk. • Efficiency of bandwidth reduced for each tier.
  17. 17. Applications • Internet/Internet messaging • Information distribution/Broadcasting • Information collection • Rural supply chain management • Information searching & web searching
  18. 18. DakNet in action • A Mobile Access Point network was deployed for Bhoomi, a computerization of land records initiative in Karnataka (India) which has been acknowledged as the first national eGovernance initiative in India. • A MAP was mounted on an existing public government bus that provides connectivity to villages up to 70km away.
  19. 19. Projects In Different Countries Hybrid Real-Time, Store- and-Forward Wi-Fi Mesh in Kigali, Rwanda Internet Village Motoman Expands to Pailin, Cambodia Commercial Network in Rural Costa Rica
  20. 20. Conclusion DakNet provides extraordinarily low-cost digital communication, letting remote villages leapfrog past the expense of traditional connectivity solutions and begin development of a full-coverage broadband wireless infrastructure. Its biggest benefit, according to United Villages, is that it provides people in under-serviced rural areas with a digital identity -- a lifetime phone number and email address.
  21. 21. References
  22. 22. Visit to download