https://www.theregister.co.uk/2018/05/25/tufts_boffins_track_device_location_without_gps_or_towers/

Tufts University boffins believe the combination of 5G and the Internet of Things will make it impossible for networks to track the expected tens of billions of connected devices.

Their answer, proposed in this week's Proceedings of the IEEE, is an algorithm that places less importance on anchors like base stations or GPS satellites, and instead distributes location-gathering among devices.