The fifth-generation mobile phone mobile communication standard, also known as the fifth-generation mobile communication technology, is abbreviated as 5G. The difference between 5G mobile communication and the first four generations of mobile communication is that the first four generations are single technologies, and 5G is the sum of the first four generations of technology, which makes the peak rate of 5G mobile communication higher and more secure. , the coverage is more extensive. It can be said that 5G mobile communication makes up for the loopholes in 4G mobile communication, and its technology is more advanced, and it can meet the current demand for the network, which is the mainstream trend in the future.
The main features of 5G mobile communication: 1 spectrum utilization efficiency will be improved. In 5G, the spectrum resources of the high frequency band will be universally applied, and its application efficiency will be greatly improved, which can make up for the spectrum shortage problem in 4G mobile communication; 2 the reliability is more remarkable. Compared with 4G mobile communication, 5G reliability is far more than 4G, and the delay is greatly shortened; 3 energy consumption is reduced. 5G mobile communication pays great attention to energy conservation and has been specially designed for this purpose.
Once the 5G network is applied, the concepts of car networking, Internet of Things, smart city, and drone network that are still in the conception stage will become reality. In addition, 5G will be further applied to the fields of industry, medical care, safety, etc., which will greatly promote the production efficiency in these fields and innovate new production methods.
The world is vying to develop 5G networks. In July 2016, the US government allocated a large amount of spectrum to 5G networks, opening the way for next-generation wireless network services. The US Federal Communications Commission (FCC) unanimously agreed to open nearly 11 GHz of high-frequency spectrum to mobile, flexible and fixed-use wireless broadband. Companies including Verizon Telecom and AT&T have begun to move toward 5G technology. The new 5G network speed is expected to reach 10 to 100 times the 4G network speed. South Korea and Japan hope to deploy this network when they host the Olympic Games in 2018 and 2020 respectively. The EU and China are also working hard to develop 5G. Nokia has partnered with Canadian operator Bell Canada to complete the first test of 5G network technology in Canada.
Second, the key technology of 5G mobile communication1. Simultaneous frequency full-duplex technology
The so-called simultaneous co-frequency full-duplex technology, as the name suggests, refers to the same channel, while receiving signals while transmitting signals, to achieve simultaneous operation in both directions. To put it simply, it refers to shielding the interference existing in the previous communication duplex node, and then receiving the signal while transmitting the signal by the signal, and improving the spectrum efficiency through simultaneous operation. This technology is more complicated than the conventional technology. Advanced and more efficient.
2, dense network technology
The traffic that 5G mobile communication can provide will be more than 1000 times that of 4G mobile communication. The main goal is to implement dense network technology. This technology includes the following two aspects: 1. Set a lot of antennas outside the macro base station. This will further expand the outdoor space; 2 need to arrange a lot of dense networks outside. The signal-to-noise ratio gain that these dense networks can produce will be more objective. At the same time, this aspect is also the core of the dense network to 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 antennas for arrays, and then associated with millimeter waves, which can effectively improve the coverage area and performance of the antenna. As far as the current situation is concerned, as long as the coverage is improved To achieve the goal of saving energy.
4. New network architecture technology
In the process of people's changing network requirements, the new network architecture technology in 5G mobile communication is the technology that emerges because of the possible business needs in the future. This technology has many advantages such as low latency and low cost in the application. In this technology, the cloud architecture is the main network architecture, and relevant personnel will study the cloud architecture.
5, intelligent technology
In the 5G mobile communication network, cloud computing is one of the indispensable networks. The large server included in this network is its main component, and the way to connect with the base station is the switch network. In addition, among the many features of the macro base station, the cloud computing storage function is a prominent feature. This function can store a lot of big data and process the data in time, and because the base station is relatively large, the number is very large. Therefore, it is possible to carry out the division of the frequency bands and then carry out different businesses.
6, direct communication technology between devices
In traditional mobile communication, the method of network coverage is used in units of cells. This method is not very flexible in the application process, and in the case of rapid development of large traffic trends, such traditional network modes have gradually The ground is eliminated, and it is very necessary to use direct communication technology between devices. Direct communication technology between devices means that direct communication between each communication device is possible without the need for an intermediate carrier. This new communication technology effectively improves communication efficiency, ensures communication quality, and consumes less energy.
Third, the future development trend of 5G mobile communication technologyAfter analyzing the 5G mobile communication technology, it can be found that it mainly develops around the following points: 1. Constructing a new architecture. In the development of 5G mobile communication, it pays great attention to the construction of new architecture, and also regards this as one of the future development directions; 2 the application of wireless transmission technology. Wireless transmission technology is more advanced than current transmission technology, so its application is also a future development trend; 3 research on frequency resources. In 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 technology and industrial transformation. On the one hand, the traditional mobile communication application module is undergoing tremendous changes. The generalization, miniaturization, virtualization and distribution of telecommunication equipment have become the mainstream of future development. Telecom technology has brought huge impact; on the other hand, 5G communication architecture is also facing a potential revolutionary change. In the next 5 to 10 years, mobile communication technology is bound to enter a period of more rapid development.
China's 5G technology research and development test will be carried out in 2016-2018, divided into 5G key technology test, 5G technical solution verification and 5G system verification. The Shanghai Municipal Government and China Mobile Communications Corporation signed a framework agreement to promote the "Internet +" strategic cooperation. During the “Thirteenth Five-Year Plan†period, China Mobile plans to invest 26 billion yuan in Shanghai to build a new generation of network and information infrastructure. Shanghai Mobile will build a new generation of network and information infrastructure, and plans to launch the 5G pilot in China in 2018.
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