In order to achieve the consensus goal of high transmission rate, low latency and high network capacity density of 5G communication, the communication industry is actively moving towards the use of higher frequency spectrum, introduction of new modulation and antenna technology, and integration of heterogeneous networks. Invest in research and development. Mastering the development of key technologies can explore major business opportunities in the technology and communications fields in the next decade.
In 2017, 5G development will advance at full speed. Under the investment of governments and major communication companies, the development of 5G technology and standards has become more clear. Recently, the US Federal Communications Commission (FCC) completed the 5G spectrum allocation plan, and Qualcomm and Intel will launch chip solutions. In addition, Verizon teamed up with seven 5G technology forum partners to develop a custom 5G standard period to be commercialized in advance in 2017. These developments are showing that the global 5G development energy has rapidly accumulated, and the market heat will climb to a new high in 2017.
In order to achieve the consensus goal of high transmission rate, low latency and high network capacity density of 5G communication, communication related operators are actively adopting three major channels: using higher frequency spectrum, introducing new modulation and antenna technology, and integrating heterogeneous networks. Invest in research and development. Therefore, this event specially invites research units and leading technology manufacturers to be lecturers to analyze how to use the frequency band below 6 GHz and the millimeter wave band to achieve higher transmission rate; and introduce general frequency division multi-task (GFDM), Massive MIMO, and action edge calculation ( MEC) and other 5G key technologies.
5G Industry Vision Technology Development Core3GPP's fifth-generation mobile communications vision is divided into three parts, Johan Asplund (Figure 1), senior technical manager of Nokia's end-to-end solution department, said that the traditional mobile broadband focus is Extreme Mobile Broadband, with the goal of transmitting rate whenever and wherever. Both can reach 100Mbit/s and the Peak Rate exceeds 10Gbits/s. The large-scale Internet of Things Massive Machine CommunicaTIon emphasizes low cost, low power consumption, and large number of links, 1 million nodes per square kilometer. CriTIcal Machine CommunicaTIon, emphasizes Low Latency, Ultra Reliability, Zero Mobility InterrupTIon.
Figure 1 Johan Asplund, senior technical manager of Nokia's end-to-end solution department, said that 5G focuses on Extreme Mobile Broadband, Massive Machine Communication and Critical Machine Communication.
One of the key points of 5G high-speed transmission is to use the high-frequency millimeter wave frequency band, which is about 24 GHz and 86 GHz. The detailed use of the frequency band depends on the governments and telecommunications authorities. In addition, more channels transmit messages at the same time, which also contributes to the increase of transmission rate. Massive MIMO technology is used together with Beamforming and Beam Tracking technology to greatly increase the transmission rate. quality. The heterogeneous network integration technology combined with different network bandwidths is a way to increase the transmission rate. Flexible framework design and distributed architecture are also the focus of development.
In the industry's expected progress, Johan Asplund said that in North America this year, the fixed wireless transmission rate will reach 1Gbits/s and the peak rate will reach 5Gbits/s. In 2018, the Changping Winter Olympics in South Korea will launch a trial run 5G service. In addition to enhanced mobility, the peak rate of wireless transmission will progress to 10Gbits/s, and the network waiting time will be shortened to 1 millisecond (ms). The application of the frequency band will be extended to 30GHz;
2019 ∼ 2020, Japan, the mainland, Europe will be introduced to the business, including the history of the most grand European Cup football game, the Tokyo Olympics, the bandwidth application of unlicensed bands and other visions will be reached.
Improve network resource management efficiencyCompared with the existing 4G LTE (Table 1), the network complexity of 5G is greatly improved. Wang Jixiang (Figure 2), Nokia's Taiwan and Hong Kong Macau Greater China End-to-End Solution Director (Figure 2) pointed out that 5G will be WiFi, 4G LTE, LPWAN In the past, the networks that operate independently of each other are connected together, and the network bandwidth and application range are also enhanced through various new technologies. Due to the application of too many elements, it is necessary to separate different vertical industries through different network slicing to meet different needs. Finally, the application of 4G to the cloud is relatively simple, and the application of 5G to the cloud will be more comprehensive and in-depth.
Figure 2 Wang Jixiang, director of end-to-end solutions for Nokia Taiwan and Hong Kong and Macau, pointed out that 5G will connect its independently operated networks in the past, and also enhance network bandwidth and application through a variety of new technologies. 
Figure 3 Liao Zhaoxiang, deputy director of SGS Electronic Communications Laboratory, pointed out that in the 5G era in 2020, the number of mobile users will grow 1.3 times compared with 2015 to 9.2 billion, and mobile broadband users will grow 2.3 times to 8.4 billion.
From the perspective of the application of network resources, Wang Jixiang explained that 5G has a very important concept called Dynamic resource management. Because bandwidth resources are limited, it must be managed more accurately, providing users with high bandwidth. Or long-term links and dynamic adjustments. Software Defined Networking (SDN) and Network Function Virtualization (NFV) will become more and more important. They will not only work together, but also be very important for the automatic management and control of network resources.
In terms of application, Wang Jixiang exemplified that the three applications of autopilot, health and smart meter have different requirements for the network. How to achieve individual goals smoothly, network slicing becomes the most important means in the future, and the network control system will adopt different parameters. The requirements of different parameters including cost, distance, quality of service, data rate, dynamic/static, battery life, delay, etc., analyze the network requirements of related applications, modularize and provide the most suitable network resources to different services. In addition, Dynamic Experience Management provides more consumer experience for users in a more real-time manner than most static management in the past.
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