5G, the fifth-generation mobile communication technology, is the peak of the development of mobile communication technology at present, and it is also an important scientific and technological force that people hope to bring changes not only to their lives, but also to the whole society. Undoubtedly, with the continuous development of 5G technology, it will greatly promote the development of technologies and applications such as Internet of Things, VR/AR, smart cities and autonomous driving, and refresh our lifestyle again. On the basis of 5G, higher requirements are put forward for the transmission rate of mobile communication, and not only in terms of speed, but also in terms of power consumption and time delay. As a result, the business based on 5G will be greatly improved, and the development of Internet will also enter the era of intelligent Internet from mobile Internet.
At present, the International Standardization Organization 3GPP has defined three application scenarios for 5G. Among them, eMBB refers to high-traffic mobile broadband services such as 3D/ ultra-high-definition video, mMTC refers to large-scale Internet of Things services, and URLLC refers to services such as unmanned driving and industrial automation that require low latency and high reliability connection. These three application scenarios point to different fields, covering all aspects of our work and life.
EMBB: High-traffic mobile broadband serviceEMBB( Enhance Mobile Broadband) refers to the enhancement of user experience and other performance based on the existing mobile broadband service scenario, which is also the application scenario closest to our daily life. The most intuitive feeling brought by 5G in this respect is that the network speed is greatly improved. Even when watching 4K HD video, the peak value can reach 10Gbps.At 0: 45am on November 17th, 2016 in the United States, during the discussion of the 5G short code scheme in the 187th meeting of 3GPP RAN, the Polar Code scheme promoted by Huawei Company of China became the final scheme of the 5G control channel eMBB scene coding.According to the data released by Cisco, from 2016 to 2021, the global IP video traffic will increase three times, and the mobile data traffic will increase about seven times in the same period. At present, the consensus reached by the industry is that high-definition video will become the main business that consumes mobile communication network traffic. Therefore, with the coming of 5G, streaming media is bound to achieve rapid growth, which is the main part of 5G's impact on personal life.
MMTC: Large-scale Internet of Things business MMTC will develop in the frequency band below 6GHz, and be applied to the large-scale Internet of Things at the same time. At present, the obvious development in this respect is NB-IoT. In the past, Wi-Fi, Zigbee, Bluetooth and other wireless transmission technologies were small-scale technologies used in the home, and the Backhaul mainly relied on LTE. Recently, with the release of NB-IoT, LoRa and other technical standards with wide coverage, it is expected that the Internet of Things will develop more widely.The 5G scenarios with low power consumption, large connectivity, low latency and high reliability are mainly for Internet of Things services. As a newly developed scenario of 5G, it focuses on solving the problem that traditional mobile communication can't well support the networking of features and vertical industry applications. Low-power-consumption and large-connection scenarios are mainly applied to smart cities, environmental monitoring, intelligent agriculture, forest fire prevention and other application scenarios with sensing and data acquisition as the goal, and have the characteristics of small data packets, low power consumption, massive connection and so on. Such terminals are widely distributed and numerous, which not only require the network to have the support capability of over 100 billion connections, and meet the requirement of 1 million /km2 connection density index, but also ensure the ultra-low power consumption and ultra-low cost of the terminals.According to the prediction of IDG, a world-renowned consulting company, in 2020, the global IoT devices will reach 28.1 billion, and the global IoT market will reach 1.7 trillion USD. At present, the biggest imagination of 5G technology is also in the field of Internet of Things.URLLC: driverless, industrial automation and other servicesThe characteristics of URLLC are high reliability, low latency and high availability. It includes the following scenarios and applications: industrial application and control, traffic safety and control, remote manufacturing, remote training, remote surgery, etc.
URLLC has great potential in driverless business. In addition, this is also very important for the security industry.The time delay of industrial automation control is about 10ms, which is difficult to achieve in the 4G era. On the other hand, unmanned driving requires higher time delay, the transmission time delay needs to be as low as 1ms, and the requirements for safety and reliability are extremely high.5G will be characterized by phased development.Internet of Things is the most important application of 5G. Since China put forward the concept of Internet of Things in 2009, up to now, its application scenarios have not exploded in a large scale, and "killer" applications have not yet appeared. The maturity of 5G will also continuously promote the re-development of new technologies such as big data and artificial intelligence, and accelerate the industrial integration and upgrading. In addition, 5G communication greatly improves the communication transmission rate, and can accumulate more data for big data and artificial intelligence, thus feeding back their development.With the arrival of 5G, in addition to the communication between people, it is further extended to people and things, and things and things, which further expands the concept of interconnected communication. In addition, with the continuous maturity of 5G, it will further promote industrial integration and upgrading, and bring deeper changes to the industry.
