Now I remember the first time I heard about a use for the “whitespaces” when the annoucement of end analog TV as we know it came about. The use was geared more towards using it for wireless internet service providers. This was followed by who should get it, who should decide who gets to use it, what regulations should be put in place, so on and so on. So, leave it to Microsoft to decide to take matters in their own hands and create another similar use. I would have to say though getting miles of range out of my wireless router, easily creating a strong and solid Wi-Fi hotspot for my home, entire neighborhood and surrounding neighborhoods? Sounds great to me, and with the support of DOCSIS 3.0, which brings the possibilty of over 150 Mbit/s to my home, a good firewall with IP throttling, I could become a small townships ISP <insert big evil grin here>
You can browse for miles and miles and miles.
While most of us are still tinkering with our home networks, perhaps slowly upgrading our machines and equipment to 802.11n draft hardware, researchers at Microsoft and HarvardUniversity are exploring a new type of Wi-Fi thinking.
Instead of operating at the same (or near) frequency range of existing Wi-Fi signals, Microsoft has been testing the transmission of signals over “whitespaces,” which is part of the radio spectrum that was formerly used by analog television stations.
Microsoft has published a paper that explains networking over UHF white spaces and how it differs from conventional Wi-Fi in spatial variation, temporal variation, and fragmentation of the UHF spectrum.
Dubbed “WhiteFi,” the researchers explain that the method “incorporates a new adaptive spectrum assignment algorithm to handle spectrum variation and fragmentation, and proposes a low overhead protocol to handle temporal variation.
Using a technique called SIFT, which the researchers say “reduces the time to detect transmissions in variable channel width systems by analyzing raw signals in the time domain.”
Basically, should this technology prove viable, we could be measuring Wi-Fi signal range in miles rather than in feet. You can read the paper here (PDF) or more technical summary of it at Dailywireless.
Source : Tom’s Hardware US