Wireless carriers might have to clean up their radio signals more than planned

The US communications regulator is asking if wireless carriers should have stricter limits on how much interference their 5G signals create. This could mean companies need to upgrade their equipment to prevent their signals from spilling into other frequencies.

Wireless signals are like water in a pipe. If the pipe is leaky, the water goes everywhere and interferes with other pipes. This document asks if the current 'leakiness' allowed for 5G signals is too high, especially for frequencies above 37 GHz. If the limits get tighter, it means less interference for other users of the airwaves, but more cost for wireless companies to build out their networks.