Is 5G & 5Ghz The Same?

July 16, 2019
by
Tom

Are 5G & 5Ghz The Same Thing? What's The Difference?

 

Technology is moving on at phenomenal rate, there is always new ways of doing things and new technology and communications constantly coming to market. If you have stumbled across the terms “5G” and “5Ghz”, wondered what they are and if they were the same thing read on for all the information you require.

 

5G & 5Ghz Not The Same

I admit that it can be confusing similar terms and abbreviations that are out there, but 5G and 5Ghz are in fact two completely different things. 5Ghz is a frequency that is used by some WIFI systems and 5G, simply means fifth generation. It’s even more confusing when many routers display their 5Ghz WIFI as “5G”. This might be on the SSID broadcast or on an LED light on the router itself. Either way this can be very confusing to people who are not familiar with the terms and technology.

 

What is 5Ghz? 

It helps to understand what hertz and the 'giga' prefix mean to understand what 5Ghz means. Radio-waves are transmitted through the air constantly rotating from a negative charge to a positive charge and back again. The is called a sinusoidal wave or a sine wave and is most commonly known in Alternating Current(AC) that is used for mains electricity. The amount of times the sine wave completes this process in a second is referred to a Hertz(hz) which simply means cycles per second.

 

Next we come to the 'giga' prefix, 'giga' means one billion or 10 to the power of 9.This means that Giga-hertz (Ghz) means a billion cycles per second and 5Ghz would equal 5 billion hertz. For your reference for WIFI, TV aerial, satellite,telecoms it’s also helpful to be familiar with the 'mega' and 'kilo' prefixes also as these are commonly used and referred to also. Kilo means one thousand (10 to the power of 3) and Mega means one million (10 to the power of 6).

 

What Is 5Ghz WIFI? 

The vast majority of WIFI systems operate in the 2.4Ghz range, over time however to accommodate more and more wireless devices and faster connection speeds the 5Ghz range was introduced for this also.  Both 2.4Ghz operate in open spectrum, this means that anyone is free to make technology that can broadcast in this range. A lot of the spectrum has been sold off to the telecoms companies for use of their services like 3G, 4G etc. It is illegal to broadcast in these frequencies without a licence, so this is what the open spectrum is reserved for. In fact, if you tried broadcasting or receiving transmissions in the 395 Mhz range you could land yourself in a lot of trouble as this part of the spectrum is reserved for TETRA which is used by the emergency services.

 

You will notice that some routers are branded “dual band” or“Tri-band”, this is letting you know that the router operates in both 2.4Ghz and 5Ghz frequency ranges. Most dual band routers will broadcast two separate WIFI connections for you to log into, some don’t but this is usually has the same password but at the end of the WIFI SSID (This is your WIFI name) often you will see ‘-5G’ at the end or something similar. This shouldn’t be confused as fifth generation and means 5Ghz.

5Ghz has some advantages over 2.4Ghz in the sense that it can provide faster connection speeds. This is because higher frequencies can carry more data. The downside of 5Ghz WIFI is that in being a higher frequency it doesn’t pass so well through objects and walls meaning that it’s not ideal for whole house coverage in your property. It is better for short range WIFI though.

 

What Is 5G? 

If you’re familiar with 3G, 4G already you will know that the ‘G’ simply means Generation. For example 3G use frequencies 900Mhz & 2100Mhz in the UK and 4G uses 800Mhz, 1800Mhx & 2600Mhz with the 800Mhz being that frequency range that was previously use for terrestrial TV services. Still to this day 4G interference can cause loss of TV signal and pixilation.

 

3G, 4G and 5G are all wireless telecommunications standards with improvements on speed and performance as time has gone on. For instance, 3G first brought in mobile data but the speed inferior to 4G. 5G offers further improvements on this and also supports device to device communications. It is said that 5G will provide the framework for driver-less cars and the Internet of Things which will see everyday items likes fridge freezers, toasters, washing machines etc connect to the internet.

 

Does 5G Use 5Ghz?

I guess this depends on how you are defining 5G, there are several opinions on the service about. If you’re defining 5G purely as something that you will be able to connect your 5G phone to, then no. (At least that’s what I think) If you’re defining 5G as what technology that it will eventually support then, for example The Internet of Things(IoT) then the answer is yes. As this will use all frequencies.

 

5G will be using a huge volume of frequencies, essentially anything 600Mhz up. The first 5G phones will use 3.4Ghz, but the 2.3Ghz has also recently been auctioned off so it’s likely that this will become a 5G and also.There is currently underway at the time of writing this a 700Mhz clearance of digital TV services that is definitely going to be used for 5G, dubbed the “coverage layer” for its ability to get a signal inside buildings. It is likley that we will see 5G interference on TV signals in the 700Mhz range like we can seen 4G interference in the 800Mhz range. In fact a lot of new aerials are coming onto the market which reject these frequencies. The real controversy with 5G is the mm wave technology that will be used which initially will be 24.25-27.5Ghz. This will support very fast connection speeds but also will not travel very far. This means that transmitters will need to be installed every couple hundred metres or so, often on street furniture. Knowing what I know about radio-waves and the effect that these have on wireless signals, even at low frequencies. I cannot see how many of the urban trees will survive the service at the frequencies that they intend to broadcast on. This is one of the reasons why I am not looking forward to the technology. It’s also very likely that even higher frequency bands are likely to be opened up too.

 

5G Gateways/ Portable Routers Could Use 5Ghz WIFI 

To confuse things even more so, some 5G gateways and portable routers could use 5Ghz WIFI for you to connect to. You may be familiar with portable 3G/4G routers which can be carried about and connect to the telecommunications network. This then provides you with a WIFI network that you can connect your wireless devices to which will operate in the WIFI frequencies (2.4Ghz, 5Ghz).A lot of mobile phones/ tablets also have this facility where the phone can beset up as a mobile hot spot and other wireless devices can connect to that and use the data from that device. Sure enough the first 5G versions of these will appear on the market very soon. This could qualify as using 5G with 5Ghz.

 

Bandwidth & Data Allowances

If you have any questions about 5G or 5Ghz WIFI please post them in the Blog Comments section below this and I will do my best to answer these for you. It’s helpful to know that bandwidth is also measured in hertz also so it’s possible that someone could say “5Ghz” and not necessarily be referring to a frequency. Also, not entirely the same the amount of data that is used or you have in your allowance is typically measured in Giga-bytes so you could also see the term 5GB which could lead you down a bit of a rabbit whole. I can’t tell if all of these similar terms are designed to be very similar and confusing because if they are, they have done a very good job in doing so.

 

5G & 5Ghz Questions? In The Blog Comments Section Please

If you have any questions about 5G or 5Ghz WIFI please post them in the Blog Comments section below this and I will do my best to answer these for you. I hope that you liked the blog, please DO NOT CALL OUR TELEPHONE LINES with your questions as these are RESERVED FOR CUSTOMERS ONLY and we do not offer free technical advice over the phone. We literally do not have the time/ staff to do so. Please also DO NOT E-MAIL OR FILL OUT THE WEBSITE CONTACT FORMS these are again intended for customers in Sussex/ Kent only. By posting your question in the blog comments section of the blog everyone reading the question will get the benefit of the question asked and the answer given. Plus it provides me with a central location to answer all the questions I get asked which really makes things easier. If you do e-mail or fill out the website contact forms it’s highly likely that you will either not receive a response or will receive one asking you to post your comment in the blog comments section.Thank you.

 

Until next time,

Tom

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