With the success of various tests and the deployment plans of some operators, 5G became very hot at the end of last year and early this year. Nowadays, the "voting gate" that is madly transmitted on the Internet has made 5G once again pushed to the forefront. So what is 5G? What can it bring to consumers and the industry? This article will answer you.
5G full name 5th GeneraTIon Wireless Systems, Chinese translation for "fifth generation wireless system." 5G refers to a wireless system that complies with IMT-2020 requirements and 3GPP R15/R16 standards.
Image from the web
The development and implementation of 5G is to meet the current "IoE" trend. IoE's full name is "Internet of Everything", which is the Internet of Everything. It is the ideal state of IoE that all kinds of equipment in the world are interconnected by high-speed network to achieve efficient collaborative work.
â–¼5G feature 1: fast network speed and low latency
Compared to 4G, 5G has higher data throughput, lower latency and greater mobility.
Regarding the theoretical rate of 5G, each company's external publicity is different. There are 1 Gbps (125 MB/s), 10 Gbps (1250 MB/s), and 20 Gbps (2500 MB/s).
Photo: Shuttershock
According to a report released by OpenSignal in February this year, the global 4G network speed average is 16.9 Mbps (2.11 MB/s), and the country with the fastest 4G network speed has 45 Mbps (5.625 MB/s). Average rate. So whether 5G is eventually 1 Gbps or 20 Gbps, it is much faster than the current 4G.
The theoretical value of 5G in terms of delay is 1 ms, which is almost equivalent to none.
â–¼5G characteristic 2: stability at high connection density
5G can maintain stability in areas such as urban centers, large office buildings, morning and evening peak subways, and holiday peak tourist attractions. In this way, each device can smoothly use the low-latency high-speed network at the same time.
Image from the web
â–¼5G feature 3: higher frequency band
In order to achieve such a high rate, the 5G network will use a higher frequency radio band. The current 4G frequency band is between 0.8 and 3 GHz, the vast majority of which are below 2.5 GHz. The 5G will use a higher frequency band, and the 2.5 to 100 GHz is a potential frequency range of 5G.
5G frequency band (Figure: Qualcomm)
â–¼5G Benefit 1: Mobile network is more powerful
The rise of high-end streaming media services on the mobile side is the main reason consumers need 5G speed. Video with high resolution (4k) or HDR, video with AR (Augmented Reality) and VR (Virtual Reality) technology, and high-rate music are all HD streaming. The data throughput of ultra-high definition video and AR/VR video is amazingly high, and 5G makes it possible to broadcast live video of this specification.
VR basketball game live
â–¼5G Benefit 2: Unmanned driving is safer
The current machine is far from being human clever and does not have the ability to adapt to human beings. Therefore, driverless cars need additional communication assistance to drive safely on the road. Under ideal conditions, there will be smooth, non-stop communication between all vehicles, road signs, signal lights and pedestrians on the road. In this way, all traffic participants can understand the real-time road conditions to the greatest extent, and make up for the shortcomings of the unmanned vehicles with poor adaptability.
"Internet of Everything" is the current direction of automatic driving (picture from the network)
Because the vehicle is driving fast, the road conditions are changing rapidly, and the communication between the traffic participants must have ultra-low delay and ultra-fast response speed. At this time, the 5G network comes in handy.
â–¼5G Benefit 3: IoT system is more efficient
The automation and cloudization of industrial production is an unstoppable trend. The arrival of 5G provides a smooth and stable communication connection between various industrial production machines. And the higher connection density allows the factory to expand and use more mechanical equipment without worrying about the network being crowded.
Internet of Things (picture from the network)
In addition to industrial production, the transportation industry (railway, aviation) and smart homes will also be the 5G show.
â–¼When can I use 5G?
5G related testing and R&D are still in full swing. Qualcomm, Intel and Samsung have also released small 5G modems. Considering the announcements of major mobile phone manufacturers and chip manufacturers from the end of last year to now, the 5G of mobile communication will be commercially available at the end of 2018 and the first half of 2019. Large-scale commercial use worldwide is estimated to be after 2020.
Qualcomm releases X50 5G modem (picture from the network)
5G network deployments in industries such as industrial and unmanned driving will be later than mobile communications, as autonomous vehicles and large-scale cloud-based industrial devices are not as mature as mobile phones.
â–¼summary
5G not only gives mobile phone users a faster network, but also makes it possible for the entire world to be connected quickly. Internetization can make people's daily life, industrial production and infrastructure operation and maintenance simple and efficient. It can be said that it is a new industrial revolution. However, over-reliance on the Internet has its disadvantages. Once the 5G communication system is attacked or invaded, billions of devices connected to the 5G network in the world may have problems. I hope that the industry can fully consider the safety issue while accelerating the development of 5G.
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