Even if the recent World Radiocommunications Conference did not allocate 28 GHz for 5G mobile use, the United States Federal Communications Commission is moving ahead to allow use of that band for mobile networks.
As with some other bands of spectrum, there are sharing and interference protection issues, as satellite operators use portions of the 28 GHz band. Methods for enabling sharing of other bands, including 5 GHz (mobile and Wi-Fi) and 3.5 GHz (licensed and commercial users) also are being developed.
The broad movement is to free up licensed but unused spectrum in an efficient way (enabling sharing), as the traditional methods (clearing users and then relicensing) take too long and cost too much.
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