New Airwave-Sharing Scheme Will Launch a Wireless Revolution
Aiming to boost wireless bandwidth and innovation, the U.S. Federal Communications Commission is poised to recommend the biggest regulatory change in decades: one that allows a newly available chunk of wireless spectrum to be leased by different companies at different times and places, rather than being auctioned off to one high bidder.
The step “is a critical milestone,” said David Tennenhouse, Microsoft’s vice president of technology policy, adding that it will not only release more spectrum but also enable “dynamic spectrum sharing that is particularly well suited for absorbing growing wireless data traffic.” Cisco Systems estimates that mobile data traffic will grow by a factor of 18 by 2016, and Bell Labs predicts it will increase by a factor of 25. Many more airwaves could eventually be shared with the help of cognitive radios, which sense available frequencies and shift between them. The move will open up a piece of spectrum in the 3.550 to 3.650 gigahertz band now used by radar systems. The move in effect allocates spectrum for another Wi-Fi—a technology that has had tremendous impact. But it is the sharing approach that represents a dramatic change in unleashing bandwidth.