Today, we rely on the Internet to ensure that all our electronic devices are always connected. This allows us to do everything we want to do – send e-mail, read online, chat with friends, stream videos, and more. As these areas become more and more in our lives, they become more and more important - no one wants to experience delays, they just want to send their own e-mail, receive their own news and can immediately watch smoothly Your favorite TV show. Although 4G technology has provided us with very good services, this does not prevent us from looking into the future - Hello 5G! When 4G can meet most of our needs, some people may question why we still need 5G, because 5G technology will be able to provide faster data speeds and, more importantly, over time, no matter how many people Connection, it can provide users with enough capacity to perform each function the user wants, without losing connection or reducing transmission speed. In fact, 5G will provide "always on" connections. In addition, when it comes to delays and as user needs and expectations increase, 4G will not be able to last longer. Compared to 4G's 40ms to 60ms delay, 5G's ultra-low latency will be as low as 1ms to 10ms. It will have the ability to provide users with a real-time response. For example, it allows viewers in stadiums to watch real-time video from different camera angles without delay. What needs to be done to make 5G a reality? The 5G initial standard has just been approved and will complete further iterations by 2020. Commercial applications based on 5G will also soon appear. In a few years, we will see that users will generally use 5G related services. Analyst Irving predicts that there will be 24 million 5G users by 2021. The 2018 Pyeongchang Winter Olympics in Korea will provide the first large-scale test platform for 5G technology and demonstrate what types of services it can provide. This will involve new types of video services and change the experience of watching sporting events on the spot. And from now on until 2020, a large number of experiments will be conducted worldwide. Recently, the EE organization has implemented the UK's first 5G experiment and achieved data transmission speeds approaching 3 Gbps, and Vodafone Group (Vodafone’s multinational mobile phone operators) also Announced the first 5G data connection in Italy. 5G will use a higher frequency band, and 5G will use higher frequency signals than those currently used by 4G. The 5G band is likely to use frequencies up to 6GHz - 4G uses only up to 20MHz, which means a new frequency band There will be less data blocking in the range - this is critical for the Internet of Things (IoT), especially with the growth of IoT terminals to 75 billion by 2025, and we believe that the use of mobile data will continue. . All challenges facing 5G The Internet is rapidly becoming saturated and new standards need to be established to meet future needs. 5G is not just a start. There are still many challenges to overcome in the next few years. In many aspects, the challenges faced by the first deployment of 4G are similar. The biggest challenge that needs to be overcome is the availability of spectrum, cost, and network architecture. Spectrum availability has always been a challenge, but it is critical to the success of 5G. It is well known that the radio frequencies used for 3G and 4G are already overcrowded and therefore require new spectrum to cope with the increasing demand. 5G will need to use the higher 6GHz band to be able to provide the required data transmission speed. The distribution and management of spectrum depends on the governments of various countries. To date, almost all countries have not yet reached a consensus. This requires changes to enable 5G to work globally. In addition, in order to ensure that the 5G spectrum will not be depleted, it may also be necessary to develop more clever use of the spectrum, such as spectrum allocated only to each task. Like 4G, costs are a big factor to consider. But until the 5G required technology development and testing, no one really knows the cost of deploying network infrastructure. Similarly, if you want to realize all the advantages of 5G, then the price of 5G related services provided for businesses and consumers must be acceptable. If only because you can download more data faster, it does not mean that people are willing to pay. More than the current 4G service. Another consideration is whether all devices are ready for 5G adaptation. It is very possible that although we can implement this new ultra-high-speed network, there is no compatible user equipment. This is a major concern of the 2018 Winter Olympics. Point, Li Bingmu, vice president of Olympic Business, said: "We don't know if we have enough equipment. We are working with all major suppliers to fight for as many opportunities as possible. Our top priority is smart phones, but we also Considering some tablets and wearables." Will it still need 6G? The scale of development of the Internet of Things (IoT) can be described as astronomical. Soon each technology will have wireless connectivity, forming an oversized network and causing network congestion - from washing machines to refrigerators to farm animal sensors. Health trackers, each bin, and self-driving cars, plus consumer expectations and needs, communication networks must keep pace - consumers simply don't care if they use WiFi or Bluetooth. They Just hope their equipment can guarantee real-time work. Different from the implementation of previous generation networks (such as 1G, 2G and 3G), it is very important for 5G to ensure that the correct infrastructure is put into use. This means that in the near future, hardware upgrades can be achieved through simple upgrades. We must truly focus on software and understand the importance of software, not just hardware. Usually mobile data technology is built around hardware, while 5G uses different methods. Its focus is on software that is relatively simple compared to hardware. Software can be upgraded with simple operations. If this is done, Correctly, it may not need 6G in the future, of course, only time can tell everything. 5G Future Outlook Although there is actually a long way to go, 5G is coming. When it really comes, people will think: What would happen to our life without it? 5G is likely to change the world we know. It will significantly increase the speed of data transmission, shorten the response time, and ensure the connectivity of the Internet of Things for billions of devices, paving the way for the innovation and development of new technologies.
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