The Federal Communications Commission has moved to make 45 MHz of spectrum in the 5.9 GHz band (5.850-5.925 GHz) available for unlicensed uses such as Wi-Fi, indoors and outdoors.
The new band plan designates the lower 45 megahertz (5.850-5.895 GHz) for unlicensed uses and the upper 30 megahertz (5.895-5.925 GHz) for enhanced automobile safety using Cellular Vehicle-toEverything (C-V2X) technology.
The 45 MHz reallocated for Wi-Fi formerly was assigned to Dedicated Short-Range Communications (DSRC) services more than 20 years ago, but DSRC has not been meaningfully deployed, and the spectrum has largely been unused for decades, the FCC notes.
The FCC will propose technical rules for outdoor unlicensed operations across the United States using the new unlicensed spectrum.
One reason the FCC prefers not to make spectrum allocations which mandate use for particular purposes is precisely what happened with DSRC. Sometimes new proposed uses do not develop, and the assigned spectrum lies fallow. The preference these days is for general purpose assignments that are not application specific.
In a sense, that also parallels the movement of all communications networks, especially public networks, away from application-specific use and towards general-purpose or multi-service modes of operation.
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