5G EXPLAINED - HOW 5G WORKS

What is 5G ?
What will 5G enable ?
When will 5G be ready ?
What will be the first applications for 5G ?
What will 5G devices offer ?
When will 5G devices be available? How does 5G work ?
5G working with 4G
How does 5G deliver continuous connection, greater capacity, and faster speed and response times?
5G Spectrum
Massive MIMO and beam steering antennas
5G delivering lower latency
5G Resources and links

WHAT IS 5G ?

5G is the 5th generation of mobile networks, a significant evolution of todays 4G LTE networks. 5G has been designed to meet the very large growth in data and connectivity of today's modern society, the internet of things with billions of connected devices, and tomorrow's innovations. 5G will initially operate in conjunction with existing 4G networks before evolving to fully standalone networks in subsequent releases and coverage expansions

In addition to delivering faster connections and greater capacity, a very important advantage of 5G is the fast response time referred to as latency. Latency is the time taken for devices to respond to each other over the wireless network. 3G networks had a typical response time of 100 milliseconds, 4G is around 30 milliseconds and 5G will be as low as 1 millisecond. This is virtually instantaneous opening up a new world of connected applications.

WHAT WILL 5G ENABLE ?

5G will enable instantaneous connectivity to billions of devices, the Internet of Things (IoT) and a truly connected world.

5G will provide the speed, low latency and connectivity to enable a new generation of applications, services and business opportunities that have not been seen before. There are three major categories of use case for 5G:
Massive machine to machine communications - also called the Internet of Things (IoT) that involves connecting billions of devices without human intervention at a scale not seen before. This has the potential to revolutionise modern industrial processes and applications including agriculture, manufacturing and business communications.
Ultra-reliable low latency communications - mission critical including real-time control of devices, industrial robotics, vehicle to vehicle communications and safety systems, autonomous driving and safer transport networks. Low latency communications also opens up a new world where remote medical care, procedures, and treatment are all possible
Enhanced mobile broadband - providing significantly faster data speeds and greater capacity keeping the world connected. New applications will include fixed wireless internet access for homes, outdoor broadcast applications without the need for broadcast vans, and greater connectivity for people on the move.
For communities, 5G will enable the connection of billions of devices for our smart cities, smart schools and smart homes, smart and safer vehicles, enhance health care and education, and provide a safer and more efficient place to live. For businesses and industry, 5G and IoT will provide a wealth of data allowing them to gain insights into their operations like never before. Businesses will operate and make key decisions driven by data, innovate in agriculture, smart farms and manufacturing, paving the way for cost savings, better customer experience and long term growth. New and Emerging technologies such as virtual and augmented reality will be accessible by everyone. Virtual reality provides connected experiences that were not possible before. With 5G and VR you will be able to travel to your favourite city, watch a live football match with the feeling of being at the ground, or even be able to inspect real estate and walk through a new home all from the comfort of your couch. 5G will keep us connected in tomorrow's smart cities, smart homes and smart schools, and enable opportunities that we haven't even thought of yet.

5G Enhanced Mobile Broadband and IoT will revolutionise agriculture and farming.

WHEN DID 5G LAUNCH ?

Initial 5G services commenced in many countries in 2019 and widespread availability of 5G is expected by 2025.

WHAT ARE THE FIRST APPLICATIONS FOR 5G?

Fixed wireless access for homes and enhanced mobile broadband services are the first applications using new 5G phones, tablets, wireless access modems and hot spots.

WHAT DO 5G DEVICES OFFER ?

The prime benefits of 5G devices will be significantly faster speeds in data access, downloading and streaming content. In addition, 5G devices will have increased computing power and make use of the lower latency, meaning that the devices will enjoy virtually instantaneous connections to the network, as well as greater connectivity when on the move due to the use of advanced antenna beam steering.

WHAT DEVICES ARE AVAILABLE FOR 5G ?

Mobile handsets, tablets and hot spots equipped with 3G, 4G and 5G connectivity were launched in 2019 and low latency and widespread machine to machine applications using 5G will be developed in the coming years.

HOW DOES 5G WORK ?

Most operators will initially integrate 5G networks with existing 4G networks to provide a continuous connection.

5G network architecture illustrating 5G and 4G working together, with central and local servers providing faster content to users and low latency applications. A mobile network has two main components, the Radio Access Network and the Core Network.
The Radio Access Network - consists of various types of facilities including small cells, towers, masts and dedicated in-building and home systems that connect mobile users and wireless devices to the main core network.
Small cells will be a major feature of 5G networks particularly at the new millimetre wave (mmWave) frequencies where the connection range is very short. To provide a continuous connection, small cells will be distributed in clusters depending on where users require connection which will complement the macro network that provides wide-area coverage.

5G Macro Cells will use MIMO (multiple input, multiple output) antennas that have multiple elements or connections to send and receive more data simultaneously. The benefit to users is that more people can simultaneously connect to the network and maintain high throughput. Where MIMO antennas use very large numbers of antenna elements they are often referred to as massive MIMO, however, the physical size is similar to existing 3G and 4G base station antennas.
The Core Network - is the mobile exchange and data network that manages all of the mobile voice, data and internet connections. For 5G, the core network is being redesigned to better integrate with the internet and cloud based services and also includes distributed servers across the network improving response times (reducing latency).
Many of the advanced features of 5G including network function virtualization and network slicing for different applications and services, will be managed in the core. The following illustration shows examples of local cloud servers providing faster content to users (movie streaming) and low latency applications for vehicle collision avoidance systems.

Example of a local server in a 5G network providing faster connection and lower response times
Network Slicing - enables a smart way to segment the network for a particular industry, business or application. For example emergency services could operate on a network slice independently from other users.
Network Function Virtualization (NVF) - is the ability to instantiate network functions in real time at any desired location within the operator's cloud platform. Network functions that used to run on dedicated hardware for example a firewall and encryption at business premises can now operate on software on a virtual machine. NVF is crucial to enable the speed efficiency and agility to support new business applications and is an important technology for a 5G ready core.