The residents of Cambridge, MA, may soon be able to log onto the Internet from any bus stop or city park. The city is working with MIT to go wireless, with a special focus on giving low-income residents access to the Internet.
The project is based on an experimental system called Roofnet, an unplanned, multiroute mesh network developed at MIT's Computer Science and Artificial Intelligence Laboratory. A mesh network is a series of radio transmitters and receivers randomly dispersed over an area. To get data from one part of the mesh to another, the network must figure out the best route between them, which can change depending on network traffic, data rates, and even the weather.
Roofnet has been operating for about three years across an area of roughly four square kilometers near MIT, using a few dozen transmitting/receiving nodes and one wired Internet connection through MIT. The nodes have been located in the homes and offices of volunteers, most of them MIT students and staff.
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