First, the concept and characteristics of 5G mobile communication technology
The fifth generation mobile phone mobile communication standard, also known as the fifth generation mobile communication technology, abbreviated as 5G. The difference between 5G mobile communications and the first four generations of mobile communications is that the first four generations are all single technologies while the 5G is the sum of the first four generations of technologies. This makes the peak rate of 5G mobile communications higher and more secure , Covering a wider range. It can be said that 5G mobile communication makes up for the loopholes existing in 4G mobile communication. Its technology is more advanced and can meet the current people's demand for the network. It is the mainstream trend of development in the coming period.
5G mobile communication main features: â‘ spectrum utilization efficiency will be increased. In 5G, the spectrum resources of high frequency band will be widely used, and its application efficiency will be greatly improved, which can make up for the shortage of spectrum in 4G mobile communication; â‘¡ The reliability is more remarkable. Compared with 4G mobile communications, 5G reliability far exceeds 4G, and the delay is also greatly reduced; â‘¢ reduce energy consumption. 5G mobile communication attaches great importance to energy conservation, and for this a special design.
Once the 5G network is applied, the concept of car networking, Internet of things, smart cities and unmanned aerial vehicle networks that still remain in the conception phase will become a reality. In addition, 5G will be further applied to industrial, medical, safety and other fields, which can greatly promote the production efficiency in these fields and innovate new production methods.
Around the world are scrambling to develop 5G network. In July 2016, the U.S. government allocated a large amount of spectrum to 5G networks, opening the way for the next generation of wireless network services. The Federal Communications Commission (FCC) unanimously agreed to open up to about 11GHz of high-frequency spectrum to mobile, flexible and fixed-use wireless broadband. Companies, including Verizon Telecom and AT & T, are already moving toward 5G technology. The new 5G network speed is expected to reach 10 times the 4G speed of 100 times. South Korea and Japan want to deploy the network when the Olympic Games are held in 2018 and 2020, respectively. The EU and China are also striving to launch 5G research and development. Nokia is working with Canadian operator Bell Canada to complete Canada's first test of 5G network technology.
Second, the key technology of 5G mobile communication
1, same frequency full duplex technology
The so-called same frequency full-duplex technology, as the name implies, refers to the same channel, sending signals at the same time also accept the signal to achieve the two directions at the same time operation. In simple terms, it refers to the existing communications duplex node interference shielding, and then use the signal transmitter signals received at the same time, through the simultaneous operation to improve the spectral efficiency of this technology compared with the traditional technology, more Advanced, but also more efficient.
2, intensive network technology
5G mobile communications will be able to provide traffic will be more than a thousand times the 4G mobile communications, and to achieve this goal is mainly rely on dense network technology, this technology includes the following two aspects: â‘ in the macro base station set up a lot of antennas, This can further expand the outdoor space; â‘¡ need to arrange a lot of dense outdoor network. The gain of signal to noise ratio that these dense networks can produce will be more objective, at the same time, it is also the core that intensive networks fully play its role. The application of dense network technology can increase the advantages of 5G mobile communication, increase its flexibility and increase its Coverage area.
3, multi-antenna transmission technology
The so-called multi-antenna transmission technology, refers to the use of active antenna array, and then associated with the millimeter wave, then you can effectively improve the antenna coverage and performance, the current situation, as long as the increase of its coverage , You can achieve the goal of saving energy.
4, a new network architecture technology
In the process of changing network requirements, the new network architecture technology in 5G mobile communications is due to the emerging service needs in the future. This technology has many advantages such as low latency and low cost in applications. In this technology, cloud architecture is the main network access architecture, and relevant personnel will study the cloud architecture.
5, intelligent technology
In the 5G mobile communication network, cloud computing is one of indispensable networks. The large server included in this network is the main component of the network, and the connection with the base station is constituted by the switch network. In addition, among the many features of the macro base station, the cloud computing storage function is a prominent feature, which can store a large amount of big data and process the data in time, and because the base stations are relatively large in size and very impressive in number , So be able to carry out the band division, and then carry out different business.
6, equipment direct communication technology
In the traditional mobile communication, the method of network coverage is adopted in the unit of cell. This method is not very flexible in the application process. In the case of rapid development of large traffic, such a traditional network mode has also gradually To be eliminated, the use of direct communication between equipment technology is very necessary. Direct communication between devices refers to the communication between the devices can communicate directly without the need for an intermediate carrier, so that new communication technologies effectively improve the communication efficiency and ensure the quality of communication, but also consume less energy.
Third, the future development trend of 5G mobile communication technology
After analyzing the 5G mobile communication technology, we can find out that it is mainly developed around the following points: â‘ Building a new type of architecture. 5G mobile communication attaches great importance to the development of new architecture in the development of the building, and also as one of the future development direction; â‘¡ wireless transmission technology. Compared with the current transmission technology, wireless transmission technology is more advanced, so its application is also the future development trend; â‘¢Research on frequency resources. In the mobile communication technology, the application of frequency resources is very important, so it is very necessary to study it and take effective measures to broaden this resource.
At present, the development of mobile communication is in a new round of technological and industrial revolution. On the one hand, traditional mobile communication application modules are undergoing tremendous changes. The generalization, miniaturization, virtualization and distribution of telecommunication equipment have become the mainstream of the future development. Telecom technology has a huge impact; the other hand, 5G communication architecture is also facing a potential revolution
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