5G standard is ready: Rel-15 success spans 3GPP groups
3gpp.org
3gpp.org
Another somewhat high-level PPT http://www.5gsummit.org/docs/slides/John-Smee-5GSummit-Silic...
I've worked on LTE; the 5G NR physical layer look to me to be very similar to LTE. See http://www.3gpp.org/DynaReport/38-series.htm and https://www.keysight.com/upload/cmc_upload/All/Understanding... for gory details
If not, what must happen in order to allow everyone use Netflix on their phones without wifi?
For providers to provide true unlimited data, you have to have true unlimited bandwidth.
Wireless connectivity is provided through a shared medium. For comparison you have wired networking where every customer has a dedicated medium, the wire, for themselves. This is what makes all the difference between actually unlimited and capped plans.
So, no. Not today. Not anytime soon.
More realistic is the 700 MHz range. 2100 TDD is also pretty much unused, as well as 2600 TDD. Then again you can reuse existing frequencies that were previously used for GSM/UMTS/LTE.
Isn’t wire also a shared medium? It’s not that there is an end-to-end circuit when you connect to another machine on the Net; your packets will be send along with others’.
That's a really tricky question. At some point, the packets are going to share a link with those from other customers, possibly oversubscribed...
Cable internet is clearly a shared medium at both the physical and link layers.
Fiber like GPON is shared physically-ish, but DWDM isolates individual waves so thoroughly that it's hard to think of that as a shared physical medium unless you're thinking about backhoe fade and the like.
With DSL, do you consider the DSLAM?
Etc
This is incorrect. GPON does not use DWDM, or any individual waves per subscriber. GPON is a shared medium with one wavelenght used in the upstream and one wavelenght used in the downstream direction. Each subscriber is allocated bandwidth on the shared medium.
Not even next generation PON uses DWDM. Next generation PON still uses on upstream and one downstream wavelenght per PON tree, but there can be multiple PON trees on the same backhaul fiber. It's more like a CWDM overlay of PON trees.
The only PON that uses DWDM is WDM-PON, but it isn't deployed commercially at scale yet.
not since you have had ethernet switches.
Semantics: no, you just need to throttle each connection such that ever user can have continuous data flow given the available back-haul.
Can your ISPs infrastructure handle everyone saturating their connection? It’s all about QOS vs Contention Ratio. It’s unlikely everyone will want to stream ten 4k videos to their home or smartphone all the time, but so long as telephony and streaming video work most of the time for most people we can probably consider that unlimited in the common parlance.
if you are willing to sacrifice on mobility aka fixed-wireless-access, there are companies that are trying to do this e.g. via beamforming, which essentially tries to make wireless a 'switched-media' rather than 'shared'.
(And to nitpick, nothing really prevents unlimited traffic today with LTE - some places have multiple operators offering it: https://www.linkedin.com/pulse/finnish-like-unlimited-mobile...)
I recently replaced my home ADSL connection with LTE (for 20 EUR a month: https://www.yesss.at/tarifoptionen/unlimited) and get approx 2x the download bandwidth and 10x the upload bandwidth for the same price as my previous ADSL connection. Even when there's congestion (which doesn't happen a lot) it's still significantly faster than ADSL.
[1] https://www.bufferbloat.net/projects/bloat/wiki/Introduction...
What about latency?
There are 3 sides to 5G: - eMBB: massive boradband --- high throughput, mmWaves; - URLLC: ultra reliable and low latency, for industrial applications typically; - mMTC: massive IoT. Cheap and low power.
The network can handle all 3, but as a device or user that doesn't mean you'll get all the benefits at the same time, some choice will be required. The reduced latency always has some cost impact.
Today the LTE air latency is 4-5 ms, the rest is in the core network. 5G has some air interface changes to reduce the air contribution to 1 ms, in the context of URLLC. For basic users, it'll likely be like LTE (already pretty good). There may be some general improvement if they optimize the core latency for all, but TBC.
https://www.edn.com/electronics-blogs/5g-waves/4460346/5G--T...
All these latency numbers vary a lot based on connection quality. As I understand you basically need line of sight for 5G to work at its maximum frequency and will fallback to what is basically 4G when such a connection is not possible. But then again the antennas/stations for 5G should be much smaller and thus easier to deploy closer to the end users.
Streaming Netflix is a blip on the radar and effectively consumes not that much, as witnessed while I was on vacation for two weeks and binge-watched on the train (three times 7 hours didn't even cross the 5GB mark).
So if you pay 50 € per month, your provider is allowed to cap you at 50€/(7€/GB) = ~7 GB while roaming.
No. For a while, perhaps. But demand will scale to meet supply as new uses for the network are found.
I would expect that to be a near worst case scenario from a bandwidth perspective. Everyone all at once suddenly has unlimited data during roughly the same 24 hour window. Apparently their existing infrastructure is good enough to handle such a spike.
This is limited somewhat in that this is a manual process (you have to click a link on a website to get it and then click a link in the confirmation SMS), but still. I think they could offer unlimited data at a price well below what they are currently offering (€80 per month for unlimited data – actually that’s not so bad, only a couple months ago the situation was much worse).
The average household uses 250GB per month with broadband.
An HEVC 1Mbps stream should offer decent enough quality on a mobile phone. That is only 30GB a month if you watch 2 hours everyday. And if you live in EU that is hardly a problem even with 4G network. It is a problem with high population density such as Tokyo, Hong Kong or Philippines. But 5G will fix all those capacity problem.
Most of the problem you read / have are likely from US. In 2016 the data show US has 3 times less cell tower per area when comparing to UK or other EU countries, but US is also much less populated. I have no idea how the business maths works out or if there are any regulation that requires them to cover most part of US.
When greed is not the problem (due to competition, etc) then those markets already have unlimited data.
The PPT is from 2015, when 5G was still just a bunch of ideas.
Doesn't LTE already have quite good latency properties?
[1] https://www.ericsson.com/en/ericsson-technology-review/archi...
https://www.edn.com/electronics-blogs/5g-waves/4460346/5G--T...
But I find reliability the far bigger problem with LTE than performance if everything goes right. Not sure how 5G will perform there.
[1] https://www.ericsson.com/en/ericsson-technology-review/archi...
patience you must have my young padawan, patience ! give it a few years...
When I change the adapter's MTU down to 1420 (reading libreswan's site I stumbled upon this value) I can login via ssh and seemingly also use it as it's supposed to. But then other issues arise... TLS Handshakes timing out. As if a dog is trying to chase its tail. I've canceled the TLE service subscription in the 14 day period because of that and I'm going to return the router today in 4 hours tops. This this is kind of a last straw kind of help request. Otherwise I'm stuck on a 14/1 Mbit/s VDSL connection which is painful to say the least, but at least I'm able to ssh into my German home network without problems.