; and (6) a unified, forward-looking domestic spectrum policy is vital for enabling the United States to advocate effectively for its interests on the global stage, including at the International Telecommunication Union, against the competing spectrum policies advanced by foreign adversaries. 3. Definitions In this Act: (1) Commission The term Commission means the Federal Communications Commission. (2) Dynamic spectrum sharing The term dynamic spectrum sharing means a technique that enables multiple electromagnetic spectrum users to operate on the same frequencies in the same geographic area without causing harmful interference to other users by using capabilities that can adjust and optimize electromagnetic spectrum usage in real time or near-real time, consistent with defined regulations and policies for a particular spectrum band. (3) Spectrum Advisory Council The term Spectrum Advisory Council has the meaning given the term in section 106(a) of the National Telecommunications and Information Administration Organization Act, as added by section 201 of this Act. (4) Under Secretary The term Under Secretary means the Under Secretary of Commerce for Communications and Information, as so designated by the amendment made by section 202(a). I Development of spectrum maximizing technologies 101. National Spectrum Research and Development Plan (a) Definition In this section, the term Federal entity has the meaning given the term in section 113(l) of the National Telecommunications and Information Administration Organization Act ( 47 U.S.C. 923(l) ). (b) Dynamic spectrum sharing (1) National testbed Not later than 18 months after the date of enactment of this Act, the Under Secretary shall establish, or coordinate with other Federal entities to establish or identify, a national testbed for dynamic spectrum sharing that— (A) enables the identification of bands of Federal and non-Federal spectrum that can be accessed on a short-term basis for experimentation