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IIT Bombay project connects 13 villages over TV white space

Students from the Indian Institute of Technology Bombay have developed a proof-of-concept network which relies on TV white space for transferring information, reports Motherboard. The first instance of the mesh-network has been implemented at Khamloli in Maharashtra, around 100 km from the IIT. The testbed network provides broadband in 13 villages or hamlets, with each village typically in the range of 5 km of Khamloli. The project has been deployed over 25 sqkm, with 1 base station at Khamloli which connects to 10 client stations, which subsequently connect to WiFi hotspots to provide internet access. The project users the 470-590 MHz ultra high frequency band which can typically operate at the range of 1-5 km. The students have published a paper with further details about the project here. The students' report mentions that the ultra high frequency (UHF) nodes used to connect villages require very little power, and can be powered by battery or solar energy. As of now, the node at Khamloli is located at the height of 30 meters, to provide line of sight to other access nodes, with client stations positioned 3-4 meters above ground. Overall, the team achieved an average speed of 5-8 Mbps over 6.7 km with a latency of 2-15ms, and 11-17 Mbps over 2.3 km with a latency of 2-11ms. Other than the managing the technical aspects, the team has also trained around 60 villagers to be ‘e-sevaks’, to help other villagers use internet services for paying bills, booking tickets etc. These e-sevaks…

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