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Will there be a 7G?

arxiv.org

81–90 of 199 posts

Re: Will there be a 7G?

#83

Unlikely. 5G hit the wall on UWB (Ultra Wide Band; 10-100GHz) because geniuses who were doing marketing for its transfer speeds did not realized that such high frequencies are disrupted with minimal amount conductive material in the air - so surprise surprise, 5G UWB does not work when you are behind a wall, it does not work when your big head full of water is in the way of BTS and most perplexing for common folk, it…

Well mmWave was never for large areas. It's for ultra high density like in stadiums with 100k people. You know those cases where current networks are completely unusable because they saturate. Its extremely limited range and penetration is a benefit there because you can put up thousands of cells without them interfering with each other. It was also meant for offices as a managed WiFi replacement. Stuff like that. In…

> It was also meant for offices as a managed WiFi replacement. Stuff like that. In this vision every laptop would have 5G built in and could work anywhere. It just didn't take off because of the chicken egg problem. Not many phones with mmWave. Not many providers with it.

It did not took off because the whole sales pitch was utter nonsense. Why would anyone put 3rd party 5G BTS inside their buildings and then pay for data, when they can use WiFi for free + they control the network so they can decide how data are shared between stations and which stations are allowed to be logged in.

I can see that 6G is pitching... exactly same thing. Which predictably is going to fail... on exactly same issue.

Re: Will there be a 7G?

#84
post #59

Earlier quoted context omitted.

3G has been shut down in several countries to free up frequencies. 2G was also shut down in several countries, it seems to be still up in most european countries with shut downs being scheduled in the next few years up to 2030.

2G is hard to shut down, because it just works, and many of the core services and old phones rely on it. It will survive 5G, 6G, 7G an other Gs.

4G is becoming the "baseline" and replacing 2G in many of those services, especially the "low energy" IoT implementations of LTE.

Re: Will there be a 7G?

#85
post #61

Earlier quoted context omitted.

Most of what passes for 5G in the US is the same old but full duplex with wider channels. Calling that 5G obscures the fact that millimeter wave 5G standalone is a totally different beast, and a huge network engineering challenge. It may seem bureaucratic to regulate what people can call 5G, but US consumers get ripped off thinking they're on an advanced network when in fact you could call it the long-term evolution…

sure but is anyone deploying mmwave outside of maybe sports stadiums? I'm not exactly going to get it on my commuter train or at work.

I get 5G mmWave in my home and around my neighborhood in Seattle. In fact sometimes at home I’ll turn off WiFi on my phone just because I’m sitting in a WiFi dead zone but the mmWave still works great.

This is on Mint Mobile, a budget MVNO now owned by T-Mobile. I pay $20/month for 15GB data.

Re: Will there be a 7G?

#86
post #72
post #49

It needs to work backwards, much like Video Codec and ask what do the stakeholders really want or need? We are closing in to rolling out the last / final phase of 5G. And yet none of the Massive MIMO on FDD is happening. We are still stuck on 32T32R, hardly that impressive considering we have that in LTE already. Not to mention the insane complexity increase from 4G to 5G. And judging from the previews of 6G that see…

Something I've noticed is that a phone is actually usable at a stadium or concert when 3g or 4g felt essentially useless at that density.

AT&T has figured out a way to monetize that. If you have a "Turbo" plan or add-on, your phone will work in crowded cells.

If you don't, good luck with that.

Re: Will there be a 7G?

#87
post #68
post #49

It needs to work backwards, much like Video Codec and ask what do the stakeholders really want or need? We are closing in to rolling out the last / final phase of 5G. And yet none of the Massive MIMO on FDD is happening. We are still stuck on 32T32R, hardly that impressive considering we have that in LTE already. Not to mention the insane complexity increase from 4G to 5G. And judging from the previews of 6G that see…

In Germany I notice a massive difference in 4G and 5G. If I see 4G on my phone and know I can put it away again if it's not some kind of an emergency because it's basically unusable. I am not sure what is going on here, probably the telcos that are limiting the bandwidth.

There’s always a gradual refarming of the spectrum into the next G. Usually the most penetrating frequencies (ie lowest) are kept on the lower G to maximize legacy support.

For a while I had my phone stick to 3G, which doesn’t support emergency alerts, because my jurisdiction kept sending them out for joint custody disputes at 3AM 1000km away. It was fine But the 3G became unbearable and they tightened up the alert criteria.

Re: Will there be a 7G?

#88
post #55

Earlier quoted context omitted.

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.

2G -> 3G -> 4G were all massive jumps that all enabled new use cases. I doubt majority of phone users who have a decent 4G connection would notice the difference if they upgrade to 5G.

It's either that or people complaining about "Now I can run out of data much faster". But what people forget is that not all the new tech is to improve it for a single subscriber. A lot of it is to utilize the spectrum better and in that way get more capacity for everyone. Basically, if everyone was on 4G, it would be clogged and slow for everyone.

Re: Will there be a 7G?

#90
post #55

Earlier quoted context omitted.

2G -> 3G -> 4G were all massive jumps that all enabled new use cases. I doubt majority of phone users who have a decent 4G connection would notice the difference if they upgrade to 5G.

In Germany telcos using 700MHz for 5G a lot (also for LTE in non-5G regions and sometimes with DSS). So they can create a lot of coverage on rural areas or building penetration. Telefonica didn't set their signallevel-to-bars-parameters on their SIMs correctly yet. Even directly next to a antenna you only see 1-2 bar although the signal level is maxing out.

700MHz is a mixed bag for rural coverage. Great for punching through trees, but need very tall towers to overcome destructive fresnel lens losses. Higher frequencies are usually better here + more gain!
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