this post was submitted on 24 Oct 2023
417 points (98.8% liked)
Technology
59597 readers
4552 users here now
This is a most excellent place for technology news and articles.
Our Rules
- Follow the lemmy.world rules.
- Only tech related content.
- Be excellent to each another!
- Mod approved content bots can post up to 10 articles per day.
- Threads asking for personal tech support may be deleted.
- Politics threads may be removed.
- No memes allowed as posts, OK to post as comments.
- Only approved bots from the list below, to ask if your bot can be added please contact us.
- Check for duplicates before posting, duplicates may be removed
Approved Bots
founded 1 year ago
MODERATORS
you are viewing a single comment's thread
view the rest of the comments
view the rest of the comments
How so?
2G defines basic mobile services, for example telephone or SMS.
3G, 4G etc. added internet to it, but there they are interchangeable. Each new one replaces the former if you use only the internet service. But none of them replaces 2G fully.
It's more that all should be backwards compatible, so if you have 5g then you still have 2g and it gives you the bare minimum voice and some scraps of data.
They can reclaim all the spectrum for 3 and 4g (which is a lot) for 5g, while leaving some of the barest functions working for stuff that doesn't need real data.
You can read in the spec why they chose not to be backwards compatible. The cons were too great.
The radios almost always are, the number of bands got ridiculous.
Yeah that's what happens when you increase the number of symbols in a frame.
Nice thought, but 5g does not have the same range.
5g low band actually does, they have down to 600mhz bands which are crazy low with tons of noise shaping, mimo, beamforming and other stuff to potentially bump the snr.
They're looking to add 400mhz bands for even more range, but the low bands have less capacity.