Build an innovative and integrated 5G network centered on User Experience (1)

Build an innovative and integrated 5G network centered on User Experience (1)

1. About 5G

Observe the development trend of the current ICT industry, in addition to the evolution and integration of traditional physical elements such as computing, storage and network, smart terminals and Mobile) the development of network technology will "people" this subject into the ICT industry, we call it "M-ICT ". 5G will be the most important foundation of M-ICT, with "human experience" as the center, further integration and innovation in terminal, wireless, network, business and other fields. 5G will have a revolutionary impact on the ability of "people" to perceive, obtain, participate and control information. 5G service targets will be expanded from public users to industrial users, absorbing the excellent features of cellular networks and local area networks to form a more intelligent, more friendly, and more widely used network. 5G will penetrate into all aspects of human life and coexist in harmony with other successful commercial technologies.

2. 5g challenges

5G Research will shift from simply increasing bandwidth to significantly improving user experience, from meeting personal information consumption applications to meeting the needs of Internet information society applications. 5G faces three major challenges in technological development.

Challenge 1: ubiquitous services

In the era of M-ICT, users need to more convenient and efficient use of mobile office, information sharing, social interaction, e-commerce, internet finance and other mobile Internet businesses. 5G Research will begin with improving user experience and build a user perception model based on users' service needs, in addition, the network capacity, bandwidth guarantee, peak rate, network latency, high-precision indoor positioning, and other key technical indicators are greatly improved.

Challenge 2: massive information connections

5G networks not only establish high-speed connections between people, but also establish high-speed connections between people and things. The physical world and the digital world are linked by information. Through the establishment of ubiquitous multi-purpose high-speed connection networks, 5G is an integrated infrastructure of the information society, providing efficient connections for social life and industrial applications, it is a massive connection, far exceeding the total number of existing connections. This poses a huge challenge to network capabilities and stability and reliability. To solve this challenge, 5G will certainly include the value links and production factors of office, shopping, medical care, education, entertainment, transportation, social networking and other vertical industries into the mobile Internet industry on a larger scale. Build a "Physical Map" on the Internet, move the physical world to the Internet, and combine the digital and physical worlds into one.

Challenge 3: Green and energy-saving

5G must be significantly improved in green and energy-saving aspects. In the era of M-ICT, 5G networks must be a large and intensive network to meet the ubiquitous service demands and mass information connection requirements. According to the existing technology, 5G networks will bring about huge energy consumption. In addition, the terminal serves as a bridge between people and things and the entire network, as well as a direct presentation of "User Experience". The 5G terminal will bring together various sensing technologies, new media technologies, and new materials technologies, it will also face greater power consumption challenges. 5G requires network architecture change, various network element functions, and restructuring of the organizational structure to Save Energy for networks and terminals.

3. Technical Outlook

5G research will focus on improving user experience, business applications for the Information Society, and building integrated and intelligent networks.

● Ultra-large data traffic Implementation Technology

In the era of M-ICT, mobile smart terminals and cloud applications will give birth to the explosive growth of data traffic, wireless networks must support ultra-large data traffic, research needs to be carried out in the wireless link, spectrum usage and networking dimensions.

1) Improved wireless link efficiency

Wireless Link efficiency improvement can break through the coding and modulation, multiple access technology and receiver fields. In the field of coding and modulation, we will focus on Nonlinear Multi-user pre-encoding, new combined modulation coding, network coding and other technologies. In the field of multi-access technology, we focus on non-orthogonal multi-access technology. In the receiver field, the key research can support full-duplex transmission of new waveforms and short wireless links in Multi Input and Multi Output transmission. The combination of these technologies can significantly improve the transmission performance of wireless networks.

2) frequency band extension and flexible management

5G can provide higher data bandwidth by adding new operating frequencies. Available new frequencies include 3 GHz or above, and even some millimeter wave frequencies. These frequencies provide the rate capability of Fiber-level bandwidth to indoor and hotspot users. Based on the development of new frequencies, 5g can introduce Dynamic Spectrum intelligent management technology so that it can work in non-authorized frequencies and non-active frequencies.

3) intensive networking

Hot spots in some regions will be an important application scenario of 5g, with high capacity requirements. You can use dense networking to increase the bandwidth capacity per unit space. A variety of new high-speed wireless LAN access points and small cell base stations constitute a three-dimensional ultra-intensive network architecture, forming a super bandwidth capability network.

● Cloud-based and intelligent networks

In the face of huge changes in digital traffic, the 5G network structure will change to cloud-based and intelligent. The era of M-ICT requires seamless connection between people, people and things, things and things. Any individual, enterprise or even machine may be both a consumer of information services and a provider of information services. They have formed a new relational digital ecosystem and led to rapid growth of digital traffic. cloud-based and intelligent networks can cope with such challenges.