Do you have any references for the ground-satellite abilities for 5G? I couldn't turn up anything on Google.
Locata [1] has been in the high-end space for a while. I had heard of a lower-end approach too, though the name escapes me, and they were only getting ~50cm.
Edit: The other one I was thinking of was decaWave [2], they claim 20cm in 2 dimensions.
I would like to see some location improvements in 5G, but I've no idea on whether or not they will
be there. (The little I've heard on 5G has been from non-technical types, always as a buzzword).
From my limited knowledge it would nice if they provided a signal somewhat similar to GPS.
Perhaps at a low frequency, as to avoid reflections and attenuation (or just a UWB signal).
The main advantage of having this together with 5G would be deployment, we would piggyback a location system
on top of 5G.
Back to your comment, I did know about DecaWave, but not Locata.
Locata looks interesting, it really does seem like GPS brought to earth.
One good thing about GPS type systems is how well they scale. The satellites just provide
the signal, they don't even have to know how many receivers are out there. (Also good from a privacy standpoint.)
DecaWave system is loosely based on IEEE 802.15.4a, which uses UWB. I think it
does two-way ranging (basically a very precise ping). And since they use UWB, their
system seems to be quite resilient to multipath.
Locata [1] has been in the high-end space for a while. I had heard of a lower-end approach too, though the name escapes me, and they were only getting ~50cm.
Edit: The other one I was thinking of was decaWave [2], they claim 20cm in 2 dimensions.
[1] http://www.locata.com/technology/locata-tech-explained/
[2] http://www.decawave.com/technology