Regulators in the US and UK both made strides towards a new regulatory environment for 5G last week, with the US FCC planning a millimeter wave spectrum auction in November, and the UK’s Ofcom seeing two new entrants engaging in its own midband spectrum sale. The FCC chair, Ajit Pai, said during his keynote speech at Mobile World Congress that he plans to hold an auction for 28 GHz spectrum in November, followed immediately by another for 24 GHz – though he must get the approval of Congress, by May 13, to implement his plan. If it goes ahead, it will be one of the first sales of millimeter wave spectrum in the world, and will set precedents for regulations…