Definition of 5G industry
5G, in a narrow sense, refers to the fifth generation of mobile communication technology wireless access network technology;In a broad sense, it refers to the fifth-generation mobile communication technology, and generally refers to the complete technical system including wireless access network, core network and related support system.
According to eu "building the information society in 2020 key technologies in the field of wireless mobile communication (METIS)" project, according to the 5 g is through the existing wireless technology evolution and development of complementary new technologies to build the long-term of the network society, through the integration of a variety of wireless access technology, provide the ultimate experience to meet the different needs of users, a variety of new wireless access technology and the existing wireless access technology integration after the floorboard of the solution, is truly converged network.In the future, 5 g will infiltrate into every field of society, to the user as the center to build a full range of information ecosystem, through to provide users with high access speed, the use of zero delay experience, billions of connection equipment capacity, super high traffic density, connection number density and high mobility scenarios more consistent service, finally realizes "tentacles and information as to all things" the vision of goals.
5G key performance
The basic performance of 5G can be summarized as "6+3".Namely, 6 functional indicators +3 efficiency indicators, 6 functional indicators include: user experience rate, connection number density, end-to-end delay, traffic density, mobility and peak rate.In different application scenarios, such as virtual reality, ultra-high definition video, cloud storage, Internet of vehicles, etc., the six functional indicators have different requirements.The three efficiency indicators include spectrum efficiency, energy efficiency and cost efficiency.Compared with the 4G system, the basic performance of the 5G system has been greatly improved, with the spectral efficiency increased by 5-15 times and the energy efficiency and cost efficiency increased by more than 100 times.
5G technical indicators
The signature capability metric is the "Gbps user experience rate," a set of key technologies including large-scale antenna arrays, ultra-dense networking, new multi-access, full spectrum access, and new network architectures.Large-scale antenna array is one of the most important technical means to improve the spectral efficiency of the system, which will play an important supporting role in meeting the capacity and rate requirements of 5G system.By increasing the deployment density of base stations, ultra-dense networking can achieve capacity improvement of a hundredfold, which is one of the most important means to meet the demand of 5G thousandfold capacity growth.The new multi-access technology improves the access capacity of the system through the superposition transmission of transmitted signals, which can effectively support the connection demand of hundreds of billions of devices in 5G network.Full spectrum access technology can effectively alleviate the huge demand of 5G network for spectrum resources by effectively utilizing all kinds of spectrum resources.Based on advanced technologies such as SDN, NFV and cloud computing, the new network architecture can realize a more flexible, intelligent, efficient and open 5G new network centering on users.