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Blog Posts by Roger C. Sherman

3.5 GHz Spectrum Access System Workshop and Online Discussion

by Roger C. Sherman, Acting Chief, Wireless Telecommunications Bureau
January 13, 2014

Part of our job at the FCC is to keep pace with new technologies and, indeed, to create an environment in which innovation can flourish. This is perhaps most true in the dynamic and ever-changing wireless sector. One focal point of our innovation strategy is the 3.5 GHz band, which presents novel opportunities to advance to the state of the art in spectrum management.  Ideally, we can do this in a way that unleashes creative forces in industry to provide more wireless bandwidth using new techniques like small cells and dynamic spectrum access.

The 3.5 GHz band is currently reserved for use by federal agencies – primarily the military, which uses the band for radar operations. The National Telecommunications and Information Administration (NTIA) proposed in 2010 that this band could be made available to commercial entities who would share the spectrum with incumbent federal users. In 2012, the President’s Council of Advisors on Science and Technology (PCAST) proposed that sharing of the band be dynamically coordinated through a Spectrum Access System (SAS). Later that year, the Commission issued a proposal to effectuate these recommendations and adopted a Public Notice on a revised licensing framework in November 2013.

Several of the central and most novel questions in this proceeding revolve around the SAS. What functions should it perform? How will it manage multiple tiers of spectrum access? Should there be multiple third-party SAS providers, and how would they interact with one another and the FCC? How can we ensure the integrity of the system to protect existing uses of the band?

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