4 ms·
5G doesn't need masts every 200-300m. There are multiple different frequency bands you can use. The lowest frequencies are around the same as 4G, so you shoul
by maffydub 7y ago
5G doesn't need masts every 200-300m.
There are multiple different frequency bands you can use.
The lowest frequencies are around the same as 4G, so you should need similar numbers of masts to get reasonable coverage.
The highest are around 60GHz - these are pretty much line-of-sight and are likely to be used for shorter-range (but super-high-bandwidth) applications.
- superkuh 7y agoWhat he means is that 5G offers only a ~15-20% increase in thoroughput with it's new set of modulation schemes given the same frequency span using 4G. So the increase in performance has to come from new frequency use. They'll steal half of C-band from satellite uplink but then all that's left is millimeter wave to truly get more thoroughput. And that does have the problem about the propagation characteristics.
- merpnderp 7y agoThroughout isn’t the biggest advantage, it’s the vastly smaller time slicing allowing far more active connections.
- maffydub 7y ago5G isn't just about bandwidth, though. There's quite a useful diagram at the bottom of https://techblog.comsoc.org/2017/03/02/itu-r-agrees-on-key-performance-requirements-for-imt-20205g/ https://techblog.comsoc.org/2017/03/02/itu-r-agrees-on-key-p... showing the three key use cases. As well as "Enhanced Mobile Broadband" (which does focus on increased bandwidth), there's also * "Massive IoT", which focuses on reducing power requirements and increasing the number of devices that can be served in a single cell (assuming they all transmit very little data) * "Low Latency", which focuses on better scheduling and quality of service.