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5G is a large Wi-Fi? Come and feel its advantages
2019-05-06

Recently, there have been reports from the media that the global 5G pilot coverage at this stage is very bad, almost a large WiFi, and may repeat the mistakes of WiMAX failure. This point of view has caused some controversy in the industry.


WiMAX is Worldwide Interoperability for Microwave Access, the world's microwave interconnect access. Simply put, WiMAX is an enhanced version of WiFi. WiFi can be transmitted for hundreds of meters at most, and WiMAX can theoretically transmit 50 kilometers. In addition, it has the characteristics of high transmission rate and rich and diverse services.


Therefore, putting 5G networks together with WiMAX seems to have many similarities in the eyes of those who do not know the truth. Xiao Wei, vice president of Xiaomi and general manager of Red Rice, asked the majority of netizens about the 5G issue on Weibo yesterday. He said: 'Someone told me today that even if there is no 5G network, I want to use 5G mobile phones! What do you think?'


5G has too many advantages and is too widely used


5G is really a large WiFi for ordinary users? In this regard, Mingchuan Capital Wang Qiu Le said that 5G is a high frequency band, the penetration ability is indeed poor, but it is not appropriate to compare it with WiMAX, 5G advantage is obviously too much.


In a nutshell, 5G networks have low latency, high speed, wide connectivity, and high reliability. It is very one-sided to make 5G larger than large WiFi.


5G has a lot of application scenarios and can be combined with many technologies. At the 5G summit of China Unicom last week, I put forward the idea that “4G changes life and 5G changes society”. China Unicom believes that 5G+AI+Big Data+Cloud will change society from smart manufacturing, smart healthcare, smart education, new media, VR/AR and other fields.


For example, autonomous driving has very high requirements for delay and requires millisecond response speed, which is considered to be the most promising 5G application. Similarly, its almost zero-latency characteristics will also be widely used in telemedicine, smart factories, 5G+VR panoramic live broadcast and other fields.


As a general-purpose technology, 5G is a tool. Don't look at the application fields mentioned above. It is far from life. In fact, everyone can use it. In addition, the global coverage of 5G is a fact. This is because the 5G construction investment is huge, and it is still at a relatively early stage. Even the trial commercialization has not been officially opened. Rome is not built in one day, and 5G construction takes time.


From the spectrum division of the three major operators in China, China Telecom has obtained 5G test frequency resources with a total bandwidth of 100MHz from 3400MHz to 3500MHz, and China Unicom is 3500MHz-3600MHz. The movement is somewhat special, and it is divided into 5G test frequency resources of 2515MHz-2675MHz and 4800MHz-4900MHz.


3.5GHz is the most concentrated frequency band in the pre-test at home and abroad. It has a mature industrial chain and is regarded by the industry as the golden band of 5G.


The 2.6 GHz and 4.9 GHz industry chains are not mature. At present, the US Sprint has a 2.6 GHz band, and Japan's 5G band also includes 4.9 GHz.


The low frequency band of 2.6 GHz has wide coverage and low cost, and is used in the future 5G large-scale Internet of Things, industrial automation and mission-critical Internet of Things.


For the average user, the existing 4G is fast enough, and after some 5G network coverage is achieved in some high-density hotspot areas, it can be used in combination with 5G+4G+3G.