What is 5G?
5G technology is the next generation of wireless communications. It is expected to provide Internet connections that are least 40 times faster than 4G LTE. 5G technology may use a variety of spectrum bands, including millimeter wave (mmWave) radio spectrum, which can carry very large amounts of data a short distance. The drawback of the higher frequencies is that they are more easily obstructed by the walls of buildings, trees and other foliage, and even inclement weather.
The forthcoming 5G technology will come from various vendors and will be composed of solutions designed to provide very fast download speeds and low latency. Today—in advance of 5G’s expected debut around 2020—companies such as Verizon, AT&T, Samsung, and Ericsson are testing new advances in signal processing, chips, and antenna technologies that will enable the next generation of mobile connectivity.
What are the real 5G use cases?
The next coming 5G will make no exception and will be focused on IoT and critical communications applications as follows.
- Fixed wireless access (from 2018-2019 onwards).
- Enhanced mobile broadband with 4G fall-back (from 2019-2020-2021).
- Massive M2M / IoT (from 2021-2022).
- Ultra low-latency IoT critical communications (from 2024-2025).
When is 5G coming?
Where is 5G technology in terms of roll-out, standardization and how long will this take?
- ITU-R launched “IMT for 2020 and beyond” in 2012, setting the stage for 5G.
- Japan and Korea started to work on 5G requirements in 2013.
- NTT Docomo did the first 5G experimental trials in 2014.
- Samsung, Huawei, and Ericsson started prototype development in 2013.
- South Korean SK Telecom demoed 5G in 2018 at the Pyeongchang Winter Olympics.
- Ericsson and TeliaSonera made commercial services available in Stockholm and Tallinn in 2018.
- North America 5G is available in some locations in 2019. It won't take off in most areas until 2020.
- In the UK, many cities will see 5G in 2019 and more in 2020. EE, Vodaphone, and O2 are actively deploying 5G since mid-2019.
- India is targeting 2020 for 5G roll-out.
- Japan's target is to launch 5G for the 2020 Tokyo summer Olympics.
- China Unicom has set up 5G in a few locations in 2019. 460 million 5G connections are expected by GMSA in China by 2025.
Whould be the Speed of 5g
5G NR speed in sub-6 GHz bands can be slightly higher than the 4G with a similar amount of spectrum and antennas, though some 3GPP 5G networks will be slower than some advanced 4G networks, such as T-Mobile's LTE/LAA network, which achieves 500+ Mbit/s in Manhattan and Chicago.
In March 2019, the Global Mobile Suppliers Association released the industry's first database tracking worldwide 5G device launches. In it, the GSA identified 23 vendors who have confirmed the availability of forthcoming 5G devices with 33 different devices including regional variants. There were seven announced 5G device form factors: (phones (×12 devices), hotspots, indoor and outdoor customer-premises equipment, modules, Snap-On dongles and adapters, and USB terminals).
5G VS. 4G
Each generation of cellular technology is separated by not just their data transmission speed, but also a break in encoding methods which requires end-users to upgrade their hardware. 4G can support up to 2Gbps and are slowly continuing to improve in speeds. 4G featured speeds up to 500 times faster than 3G. 5G can be up to 100 times faster than 4G.
The main difference between 4 and 5G is the level of latency, of which 5G, will have much lower of. 5G will use OFDM encoding, similar to 4G LTE. 4G, however, will use 20 MHz channels, bonded together at 160 MHz. 5G will be up to between 100-800MHz channels, which requires larger blocks of airwaves than 4G.
Samsung is currently researching into 6G. Not too much is currently known on how fast 6G would be and how it would operate; however, 6G will probably operate in similar magnitudes more than the differences between 4 and 5G. Some think 6G may use millimeter waves on the radio spectrum and may be a decade away.