5G development background
5G development background
The rapid development of mobile Internet and Internet of Things has spawned 5G technology
People's pursuit of high performance in mobile networks has promoted the evolution of mobile communication technology from 2G to 4G. However, with the rapid development of the mobile Internet, the speed and delay of the existing 4G network can no longer satisfy the extreme experience of high-definition video, panoramic live broadcast and immersive game service, and the mobile communication technology needs to evolve to the next generation. On the other hand, with the rapid development of the Internet of Things, diversified application scenarios and massive device connections pose great challenges to the speed, delay and connection density of 4G networks, and the next generation of technologies is urgently needed to meet these application requirements. It can be seen that the rapid development of the mobile Internet and the Internet of Things has promoted the evolution of mobile communication technology to the next generation, and 5G came into being.
What is the difference between 5G - technical standards
R16 is expected to be completed in 2020, and 5G achieves global standard
Each generation of mobile communication technology has a different system, and 5G has achieved the unification of global standards for the first time. In the 3G era, there are three standards of CDMA 2000, WCDMA, TD-SCDMA and 3GPP2. In the 4G era, 3GPP developed two standards, FDD-LTE and TDD-LTE. For 5G, 3GPP only has one standard, and the standardization work is divided into two phases, corresponding to the R15 and R16 versions. The R15 version is divided into three sub-phases of R15 NR NSA (non-independent networking), R15 NR SA (independent networking) and R15 late drop. Because the R15 late drop completion time was delayed by 3 months from the original plan, the R15 version was frozen in March this year, and the R16 version was postponed for 3 months. It is expected to be completed in March 2020.
What is the difference between 5G - performance indicators
Large bandwidth, high reliability, low latency, and large connections drive industry development
Compared with 4G, 5G's transmission rate, delay, mobility and connection density have improved qualitatively. According to the value of the ITU, the peak rate of 5G is up to 20Gbps, the experience rate is up to 1Gbps, the air interface delay is less than 1ms, and millions of devices can be connected per square kilometer, which can support moving speed of more than 500km per hour. The high-performance 5G network can carry industry application scenarios with special requirements for the network, and is the basis for the digital transformation of enterprises, which will effectively promote the development of the industry.
What is the difference between 5G - network architecture
New network architecture enables 5G networks to have the ability to host diverse application scenarios
In order to meet the requirements of key performance indicators, network operation capabilities and network evolution, 5G has carried out network architecture innovation from both the core network and the access network. On the one hand, the wireless side evolves from the BBU+RRU network architecture to the CU+DU+AAU three-level structure. The BBU function is split, the NE functions are more detailed, and the networking mode is more flexible, which can support the requirements of different application scenarios. On the other hand, the core network function is split into two cores, New Core and MEC, which are sunk and the MEC is deployed closer to the user to meet the needs of low-latency services. Based on NFV (Network Virtualization) and SDN (Software-Defined Network) 5G core network, the decoupling of functions and hardware, the separation of control and forwarding, and network slicing can be achieved to achieve the goal of improving network performance to support diversified Application scenario.
What is the difference between 5G - user groups
C-end market growth is weak, B-end applications will become the main driving force for 5G development
The growth of the C-end market is weak, and the B-end application will become the main driving force for the development of 5G. As far as the C-end market is concerned, on the one hand, the penetration rate of mobile users has reached 112.2%, the growth is weak and the ARPU is declining year by year. On the other hand, the rapid development of the mobile Internet has led to rapid growth in user traffic. However, due to the speed-up and fee reduction, the price war of operators, etc., the overall traffic has increased dramatically and the income has remained the same. Overall, the C-end user scale has reached its limit, revenue has started to decline, and the C-end market has become saturated. Relatively speaking, the vertical industry application market has great potential, on the one hand, because the Internet of Things connection will far exceed the mobile Internet. On the other hand, 5G, as the foundation of the digital transformation of the industry, will create higher application value.
What is the difference between 5G - terminal maturity
5G terminal has high maturity and rapid development
As mentioned above, industry applications will become the main driving force for 5G development. Faced with diverse scenarios, 5G terminals will evolve along a variety of forms and interactions. The national policies have been strongly supported, and communication companies have worked together. In the first year of 5G commercialization, the types and quantities of terminals have far exceeded expectations. The rapid development speed is unmatched by the mobile communication technologies of the past generations. In the first year of 4G commercial use, there are only 4 4G terminals on the market, and as of September 10 this year, there are 136 5G terminals, which promoted the development of 5G industry applications.
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