What are the three characteristics of 5g

The three characteristics of 5g are: 1. High speed; in practical applications, the speed of 5G network is more than 10 times that of 4G network. 2. Low latency; the latency of 5G network is about tens of milliseconds, which is faster than human reaction speed. 3. Broad connection; the emergence of 5G network, combined with other technologies, will create a new scene of the Internet of Everything.

The operating environment of this tutorial: Windows 7 system, Dell G3 computer.

The 5th Generation Mobile Communication Technology (5G for short) is a new generation of broadband mobile communication technology with the characteristics of high speed, low latency and large connections. 5G communication facilities are the key to realizing the realization of human, machine and physical objects. Internet network infrastructure.

In order to meet the diverse application scenarios of 5G, the key performance indicators of 5G are more diversified. ITU has defined eight key performance indicators of 5G. Among them, high speed, low latency, and large connections have become the most prominent features of 5G. The user experience rate reaches 1Gbps, the latency is as low as 1ms, and the user connection capability reaches 1 million connections/square kilometer.

Three characteristics of 5g:

1. High speed

In practical applications , the speed of 5G network is more than 10 times that of 4G network;

2. Low latency

The latency of 5G network is about tens of milliseconds, which is faster than human reaction speed Even faster;

3. Broad connection

The emergence of 5G network, combined with other technologies, will create a new scene of the Internet of Everything.

Key technologies of 5g

##Key wireless technologies of 5G

5G international technical standards focus on meeting Flexible and diverse IoT needs. Based on the basic technologies of OFDMA and MIMO, 5G adopts a flexible new system design to support three major application scenarios. In terms of frequency bands, unlike 4G that supports mid- and low-frequency, 5G supports both mid-low and high-frequency bands, considering that mid- and low-frequency resources are limited. The mid-low frequency meets the coverage and capacity requirements, and the high frequency meets the need to increase capacity in hot spots. 5G is targeted at A unified technical solution is designed for mid-low frequency and high frequency, and supports a basic bandwidth of 100 MHz. In order to support high-speed transmission and better coverage, 5G uses LDPC, Polar's new channel coding scheme, and large-scale antenna technology with stronger performance. In order to support low latency and high reliability, 5G uses technologies such as short frames, fast feedback, and multi-layer/multi-station data retransmission.

5G network key technologies

5G adopts a new service-oriented architecture to support flexible deployment and differentiated business scenarios. 5G adopts a full-service design, modular network functions, and supports on-demand invocation to realize function reconstruction. It adopts service-oriented description to easily realize the opening of capabilities, which is conducive to introducing IT development strength and unleashing the potential of the network. 5G supports flexible deployment. Based on NFV/SDN, it realizes the decoupling of hardware and software and the separation of control and forwarding. It adopts the cloud networking of general data center, with flexible network function deployment and efficient resource scheduling. It supports edge computing and cloud computing platform. Sink to the edge of the network to support flexible selection of application-based gateways and edge offloading. Meet the differentiated needs of 5G through network slicing. Network slicing refers to selecting specific features and functions from a network and customizing a logically independent network. It allows operators to deploy multiple networks with different functions and feature services. Logical networks serve their respective target users, and three types of network slicing are defined, namely enhanced mobile broadband, low latency and high reliability, and large-connection Internet of Things.

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