4G->5G is the equivalent to upgrading from gigabit to 10 gigabit ethernet yet everyone is treating it like some kind of insane technology.
I have yet to see what exactly the hype is about.
I have yet to see what exactly the hype is about.
I'd take 4G LTE as implemented in much of urban Japan over hypothetical 5G any day. I witnessed nigh-instant web page load times with my phone reporting zero bars in the Tokyo subway once. Over a period of weeks, I can't recall having anything less than a "pretty darn good" level of service, no matter what the signal was reported as. In the US, I find that two bars is slow and sketchy, while one bar (still @ 4G LTE reported service!) is often a "forget about it" level of service. I.e. I'd take service consistency over theoretical-max-speed any time.
On that basis, I suspect the signal consistency challenges 5G faces will make it a very frustrating service for many real-world users.
Also is signal strength important as some 4g router do report it but they are bigger
One of the areas I've heard should be improving with 5G is latency. On 4G we're talking O(10ms)? which on 5G, so says the marketing, should be O(1ms). If this is true, it will make a noticeable impact on the responsiveness of web driven apps (aka almost all apps) as well as video/audio chat liveness. Was this oversold to me (highly probable)?
For example: A 10ms video refresh rate would be 100fps.. the average movie is 24fps.
But in general for web browsing, 100ms would be unnoticeable yeah.
In addition to mobile network latency you have to add a few more things - depending on how far you are from the data centre serving the web app you're looking at ~20ms-300ms additional network latency, plus however long the server takes to process your request, regardless of 4G or 5G. Check out https://www.cloudping.info/ for some ping times to AWS datacentres around the world
Beyond URLLC are protocols aimed at replacing wires in "serious" industrial control systems: things like real time control of grid switchgear and heavy machinery, so you might not see it on your phone. Latencies of the order of microseconds have been demonstrated in recent years and the stretch goal is about 200ns.
https://i.imgur.com/Dg4Jit5.png
That's my RTT ping to 8.8.8.8 as I travelled south on CalTrain from SF last week, on T~mobile's network.
Now, this is on an old phone that is only capable of HSPA+. However, the actual performance on the whole is still nowhere near any theoretical limits, or even limits of HSPA+.
Just some changes:
* You will have your own 5G home router micro cells. Factories will have their own 5G networks in unallocate bandwidth. Like Wi-fi but lower latency and better services.
* High quality low latency streaming means that gaming consoles will disappear from homes. You can stream games either from servers or from edge servers. You can have "tactile internet" with 5G latency. Enough to stream games.
* Very low power gadgets in your home will use 5G.
Can't wait for the rise of GaaS (gaming as a service) and the associated monthly subscription fees.
Nothing about 5g is _unique_ to 5g except that it's controlled by telcos.
You can run local networks without buying it from telcos.
Similar things can be said about the insane techniques that have been used to increase processor power each order of magnitude.