; (7) the term Spectrum Frontiers proceeding means the Report and Order and Further Notice of Proposed Rulemaking in the matter of Use of Spectrum Bands Above 24 GHz for Mobile Radio Services, adopted by the Commission on July 14, 2016 (FCC 16–89); (8) the term Spectrum Relocation Fund means the fund established under section 118 of the National Telecommunications and Information Administration Organization Act ( 47 U.S.C. 928 ); and (9) the term system of competitive bidding means a system of competitive bidding conducted under section 309(j) of the Communications Act of 1934 ( 47 U.S.C. 309(j) ). 4. Spectrum Frontiers proceeding Not later than 1 year after the date of enactment of this Act, the Commission shall complete the rule making to which the Spectrum Frontiers proceeding relates. 5. Expanding access to commercial spectrum (a) FCC responsibilities (1) In general The Commission, in consultation with the NTIA, shall— (A) not later than December 31, 2018, complete a system of competitive bidding to grant priority access licenses for the use of 70 megahertz of spectrum in the frequencies between 3550 megahertz and 3650 megahertz; (B) not later than December 31, 2018, complete a system of competitive bidding for the use of spectrum in frequencies between— (i) 24250 megahertz and 24450 megahertz; (ii) 24750 megahertz and 25250 megahertz; (iii) 27500 megahertz and 28350 megahertz, consistent with the spectrum sharing framework adopted for that frequency band as part of the Spectrum Frontiers proceeding; (iv) 37600 megahertz and 38600 megahertz; (v) 38600 megahertz and 40000 megahertz; and (vi) 47200 megahertz and 48200 megahertz; and (C) not later than December 31, 2020, complete a system of competitive bidding for the use of spectrum in frequencies between— (i) 31800 megahertz and 33400 megahertz; (ii) 42000 megahertz and 42500 megahertz