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Posts: 213
Joined: Dec 2009
29-12-2009, 06:52 PM

DakNetis an ad hoc network that uses wireless technology to provide asynchronous digital connectivity.DakNet, whose name derives from
the Hindi word for post or postal,(dak) combines
a physical means of transportation with wireless
data transfer to extend the Internet connectivity. DakNet has been successfully deployed in remote parts of both India and Cambodia at a cost much less than that of traditional landline solutions. Villagers now get affordable Internet services.

The wireless catalyst
Recent advances in wireless computer networking”
particularly the IEEE 802 standards”have led
to huge commercial success and low pricing for
broadband networks.These can be used to provide broadband access to even the
most remote areas at a low price. wireless cell
phone and wireless local loop (WLL) service costs
roughly a third of that of the landline .The WiFi standard is the most promising of the wireless technologies.

DakNet transmits data over short
point-to-point links between kiosks and portable
storage devices, called mobile access points (MAPs). Mounted on and powered by a bus, a
motorcycle, or even a bicycle with a small generator,
a MAP physically transports data among public
kiosks and private communications devices and between kiosks and a hub.WiFi radio
transceivers automatically transfer the data stored
in the mobile access points MAP at high bandwidth for each point-topoint

The Daknet operation consists of two steps:
-Powering the village kiosks:As the MAP-equipped vehicle comes in
range of a village WiFi-enabled kiosk, it automatically
senses the wireless connection and
then uploads and downloads MBs of data.
-Synchronisation with internet: When a MAP-equipped vehicle comes within
range of an Internet access point (the hub), it
automatically synchronizes the data from all
the rural kiosks, using the Internet.

For a lot of vehicles carrying a
MAP unit,These steps are repeated. a single vehicle passing by a village once per
day is sufficient to provide daily information services.a significant amount of data can move at once(typically 20MB either direction), which is better than low-bandwidth technologies such as a telephone modem.

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