5G Vs. 4G: How The Next Generation Of Networks Will Change Your Life

Everybody loves speedy internet, so it’s no surprise that every major telecom provider in the world is working to make it even faster. Smartphones, watches, homes and cars are increasingly requiring stable internet connections. In order to pipe in enough bandwidth for that precious wireless feed, we're going to need an entirely new form of wireless signal — that’s where 5G comes in.

5G image from Shutterstock

Similar to 4G and 3G before it, 5G is a wireless connection built specifically to keep up with the proliferation of devices that need a mobile internet connection. It’s not just your phone and your computer anymore, either. Home appliances, door locks, security cameras, cars, wearables, dog collars and so many other inert devices are beginning to connect to the web. Gartner predicts that 20.8 billion devices will be connected to the Internet by 2020. By comparison, there are currently an estimated 6.4 billion connected devices in the world. That’s a lot more devices asking for a quick connection.

To make 5G and the future of wireless internet a little easier understand, we decided to break down exactly what it is and how it will make your life better in the very near future.

What exactly is 5G?

The “G” in 5G stands for “generation”. Wireless phone technology technically started with 1G, and in the early 1990s, and it expanded to 2G when companies first started enabling people to send text messages between two mobile devices.

Eventually the world moved on to 3G, which gave people the ability to make phone calls, send text messages and browse the internet. 4G enhanced many of the capabilities that were made possible with the third generation of wireless. People could browse the web, send text messages, and make phone calls — and they could even download and upload large video files without any issues.

Then companies added LTE, short for “long term evolution”, to 4G connectivity. LTE became the fastest and most consistent variety of 4G compared to competing technologies like WiMax. The difference between WiMax and LTE is similar to the difference between Blu-Ray and HD DVDs: Both technologies achieved similar outcomes, but it was important to create a standard for everyone to use. LTE did just that, and it made 4G technology even faster.

5G will build on the foundation created by 4G LTE. It's going to allow people to send texts, make calls and browse the web as always — and it will dramatically increase the speed at which data is transferred across the network. 5G will make it easier for people to download and upload Ultra HD and 3D video. It will also make room for the thousands of internet-connected devices entering our everyday world. Just imagine upgrading your data connection from a garden hose to a fire hose. The difference will be noticeable.

But is 5G really that much faster than 4G?

In short: Yes. Speeds will be significantly faster. Currently, 4G LTE transfer speeds top out at about one gigabit per second. That means it takes about an hour to download a short HD movie in perfect conditions. The problem is, people rarely experience 4G’s maximum download speed because the signal can be disrupted by so many different things: buildings, microwaves, other wifi signals. The list goes on and on.

5G will increase download speeds up to 10 gigabits per second. That means a full HD movie can be downloaded in a matter of seconds. It will also reduce latency significantly (giving people faster load times). In short, it will give wireless broadband the capacity it needs to power thousands of connected devices that will reach our homes and workplaces.

How does it work?

There are already huge consortiums of major global telecoms working to create worldwide standards around 5G. Although most of those standards haven’t been solidified, experts expect it to be backwards compatible (with 4G and 3G) in addition to having some interoperability across the world.

In their most basic form, mobile phones are basically two-way radios. When you call someone, your phone converts your voice into an electrical signal. It transmits that electrical signal to the nearest cell tower using radio wave. The cell tower bounces the radio wave through a network of cell towers and eventually to your friend’s phone. The same thing is happening when you send other forms of data (like photos and video) across the network.

Typically when a new mobile wireless technology comes along (like 5G), it’s assigned a higher radio frequency. For instance, 4G occupied the frequency bands up to 20 MHz. In the case of 5G, it will likely sit on the frequency band up to 6GHz. The reason new wireless technologies occupy higher frequencies is because they typically aren’t in use and move information at a much faster speed.

The problem is that higher frequency signals don’t travel as far as lower frequencies, so multiple input and output antennas (MIMOs) will probably be used to boost signals anywhere 5G is offered.

When will 5G be available?

It’s already available in some test locations around the United States. This week at Mobile World Congress, US telco Verizon announced that it’s begun limited trials of 5G in Texas, Oregon, and New Jersey. Not to be left out, one of its chief rivals AT&T announced that it will begin testing 5G technology in its own labs before hosting fixed trials.

Although Australian telco Telstra is already working towards 5G, don’t expect to see it anytime soon. Most experts predict that 5G won’t be widely available until 2020. First, we'll be getting upgrades to the 4G network which will allow compatible devices to hit theoretical maximum download speeds of 1000Mbps.

But it will be well worth the wait. If there’s anything that everyone can agree on, it’s that speedy internet is a necessity in this day and age. And the importance of a quick connection is only going to increase. If we’re going to realise a vision of the future with billions of connected devices, then blazing fast internet is going to become a basic necessity — and 5G will help us get there.


This story originally appeared on Gizmodo.


Comments

    hmmm so at 1Gbps is would take an hour to download an HD movie and yet at 10x that speed it would take but seconds?

    Currently, 4G LTE transfer speeds top out at about one gigabit per second. That means it takes about an hour to download a short HD movie in perfect conditions.

    Your maths is off, by a lot.

    1 Gb/s = 60 Gb/m = 7.5GB/m

    So you could download a 720p compressed movie in about a minute at those speeds, a full Blu-Ray would be around 25GB and download in a little over 3 minutes.

    Similarly following those maths and increasing to the 10x speed of 5g you have 6 and 20 seconds for those two movie examples.

    Sorry but all the talk of 4G is bull, LTE and what Telstra started to call 4G is all 3G tech, no one has released 4G Mobile yet. 4G mobile starts with LTE Advanced or its correct term 3GPP LTE.

    Please need to look at the ITU definition. 4G uses all IP packet switched networks. To get the 1Gb/s you need to also use wireless networks.

    Read for yourselves: https://en.wikipedia.org/wiki/4G#IMT-2000_compliant_4G_standards

    Last edited 03/03/16 9:14 pm

    Well 4G gets me a good 30mbps, which is still 3 times faster than my adsl2+, but whats the latency on mobile networks? if bandwidth was more for cheaper it could be a good alternative to cable/nbn

      Mobile networks will never be a good alternative to Fiber internet. Mobile networks do not have the bandwidth to sustain an entire countries home internet connections. The speeds would drop to below dial up speeds.

        Mobile networks will never be a good alternative to Fiber internet Except where there is no fibre. Which is most places.

          What part of Mobile networks dont have the bandwidth do you understand? If everyone switched their home internet connection to mobile, The speeds for everyone would tank.

            None. I'm pretty clear on it all. But thanks for caring.
            Mobile is a viable alternative where there's no fibre.

              There is not viable alternative. Everyone switching to Mobile would result in massive slowdowns. Unless of course you like to wait 5 minutes for a webpage to load.

              Educate yourself

              https://nbnmyths.wordpress.com/why-not-wireless/

              Last edited 04/03/16 10:18 pm

                5 minutes for a page to load over wireless is infinitely quicker than the load time over a non-existent fibre. I'd have thought that was obvious.
                Calm down.
                WWW.randomlinksfromgoogledontmakethingstrue.com

    It depends on whether you're accessing your internet from your garden hose or the local fire hydrant. Also, if you're downloading a Blu Ray or a HD DVD, you're going to see the difference because one will come in a plastic box and the other one will just be a disc in a cardboard sleeve due to packet loss. Certainly, you'll pay more for 5G access because 5Gs is more than 4Gs. Security will be an issue that adds to the cost as all fire hydrants will need to be protected by a security guard. Hope this helps.

    And what about the cost?
    Telstra with the best coverage have us all over a barrel with pricing. If you want the best connection, you have Telstra. Then what you end up with is half or less data than their competitors for significantly more cost.

      They're actually getting quite competitive now. There's been a recent round of increasingly large data allowances and Telstra have been keeping up (kind of).
      But yes, if you need coverage, they're still the only real choice. And when something goes wrong, you have to deal with their customer service which can often mean you'd wish you'd gone somewhere else.

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