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Will There Be a 7G?

https://arxiv.org/abs/2609.01877
22•Betelbuddy•57m ago

Comments

jruohonen•45m ago
Well, I suppose the rolling out of 5G must happen at some point, but otherwise his/her take in Section III.A is spot on and the most important takeaway.
VorpalWay•35m ago
5G seems pretty widly available here in Sweden in my experience, even in the countryside. Not that the speeds are actually better than 4G, but the indicator say 5G as I'm writing this in a tent in the middle of nowhere. :)

I guess other countries are further behind?

jruohonen•31m ago
> I guess other countries are further behind?

Yes, and even in Europe. The demand-led need was badly misunderstood or anticipated in my opinion as operators were hesitant to invest (and some big ones still are). In this sense, 7G is a pipe dream (but of course worth researching as such).

tvink•28m ago
On raw coverage of 5g, only a few much denser countries are better. You live in basically the best 4g and 5g covered, sparsely populated country on earth :) most countries are not just further behind.
vlovich123•3m ago
American cities also generally seem to have good 5G coverage with 4G frequencies being repurposed for 5G and 4G overall being put on life support as it’s phased out
hn_throwaway_99•27m ago
With 5G in particular I think it's important that people talk about which specific technologies they're referring to.

In the US at least, low-band or extended range 5G is widely available and has been for some time (and I'm talking about the "real" 5G low-band, not the BS marketing speak AT&T used for a while). Mid and high band 5G, or 5G ultra capacity, is much less available but if course it only really makes sense in dense cities.

I'm surprised that low band 5G isn't widely available in most 1st world countries, as again it's been here in the US for many years now.

kergonath•17m ago
Lucky you. On some parts of my commute, in an urban area of 10M people, I am happy if I get some 3G.
dorianmariecom•30m ago
yes
BlackRabbit1•29m ago
5G SA isn't still available for the broad masses yet.. and they are talking of 7G?

I had the chance to test it in Germany with Telefonica as it can be activated for free. It saves a lot of battery compared to 5G NSA. But they still had smaller problems with hand-overs to LTE and GSM.

Colleagues told me that the 5G NSA battery consumption problem is pretty much solved with other basebands and only Pixels are famous for suffering this much.

esperent•23m ago
I'm not sure what the "SA" part means but my phone says it's on 5g right now and has done most of the time for a couple of years now.
BlackRabbit1•5m ago
Just because your phone shows 5G doesn't mean it's connected to a 5G station. It also can only be a signalled compatibility flag.
wolvoleo•2m ago
SA means standalone meaning real 5G.

NSA is non stand alone meaning basically 4G with some 5G backwards compatible improvements.

tomasGiden•23m ago
And companies are selling electric cars even though not everyone has a petrol car…

I remember people saying the same thing about 4G relative 3G and 5G relative 4G.

numpad0•2m ago
respectattentio•27m ago
The right question:

Will 7G be needed?

I say no for the next 15 years. Because there are 1425235 other things that are way much important than this.

someguynamedq•24m ago
Right and society only works on one thing at a time
respectattentio•17m ago
Yes, why working on something that "may" be beneficial in the far future? This is like inventing a 128-bit CPU architecture. Nobody would be able to utilize like even 1% of that, even with AI.
tolugenius•26m ago
Could there come a limit to the G-cycle? Like either a) marginal gains slow/stall progress or b) more connectivity simply not being better? Curious to hear from folks in this field if this question has been raised.
londons_explore•20m ago
Not soon there won't be.

There is no reason you can't have phased array antennas of tens of elements on the handset and thousands on the masts, to give a massive bandwidth increase.

It will take a lot of generations to get to the limit physics sets.

ck2•23m ago
even the moon only has 4G

well if they ever get the lander upright, you'd think they'd learn to put crashbags that self-inflate to upright landers by now

* https://www.wired.com/story/nokia-4g-network-on-the-moon/

Havoc•22m ago
There will always be new Gs...marketing teams require it.

I hope they go into the direction wifi is taking though - stability rather than speed.

I never think about cell speeds being slow anymore but irritation at lack of coverage is still frequent. Esp in urban jungles where buildings block it

wolvoleo•5m ago
That's more of a physics thing.

For building penetration you need low frequencies but those low frequencies have less bandwidth available because the bands are smaller. At the same time bandwidth needs rapidly go up, making those low bands fuller. Because there's a limit to how many bits per second you can get out of a Hz of spectrum.

What would really help is the easy provisioning of signal boosters. A bit like the sure signal thingies that Vodafone used to sell but multi provider ideally. This could be incorporated into the standard. Then establishments could easily include a booster just like many of them offer free WiFi now.

walrus01•22m ago
Note that "G" generally is a marketing term for consumers, the actual tech is 3GPP rev-whatever

https://en.wikipedia.org/wiki/3GPP

Like 3GPP release 15 or 16 is what we currently know as a lot of in production LTE/LTE-Advanced stuff.

zkms•16m ago
Run the abstract through pangram.com; this is AI slop: https://www.pangram.com/history/49f81c92-a2f4-46f6-91b3-e185...
0utcast•12m ago
Ironically for mobile data, I've liked and found 4G to be more consistent. Not always as fast, but it never drops for me or fails to load.
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