Views: 0 Author: Site Editor Publish Time: 2023-04-19 Origin: Site
At present, the use of China's mobile communication network has changed from 4G network to 5G networks. In the future, 5G networks (fifth -generation mobile communication technology) will become the rapid development of information communication. Advanced construction and upgrades carrying networks will promote the rapid growth of the demand for telecommunications lighting equipment. During this period, 5G networks will become the rapid development of information and communication, and the advanced nature of carrying the network will promote the rapid growth of the demand for the lighting module of the telecommunications network.
First, the characteristics of 5G network.
5G mobile network provides three businesses: enhance mobile broadband, ultra -reliable low -delay communication and large machine communication. Different business performance is very different: EMBB business faces traditional mobile communication and super reliable low delayed communication. Different business performance is very different;
5G Wireless Access (RAN) are re -divided into active antenna unit (AAU), allocation unit (DU), and central network (CU). The network develops in the direction of cloudy and distributed, and develops towards scattered directions.
The first is a broadband band.
The base station bandwidth depends on parameter configuration such as wireless spectral bandwidth, spectrum efficiency, and number of antenna. The peak bandwidth of the base station with a 64TR100M bandwidth can be GBIT/S, and the average bandwidth can reach 3GBit/s. According to the definition of the International Telecommunications Alliance (ITU), the maximum peak of 5G base stations can reach 20Gbit/s. In practice, the baseline speed is difficult to reach the maximum peak speed. In addition, considering costs and power factors, 5G base stations will have a variety of coexistence, and there will be a base station bandwidth of 1 ~ 20Gbit/s.
2. Low latency 5G Different businesses are very delayed. The TR38.913 of 3GPP defines the delay of the EMBB -end to end (E2E) to 10ms, and URLLC is 1ms. Essence
Third, communication Mesh.
Because 5GCU and DU can be separated, the separated CU and DU have the characteristics of one or one pair and more, and have double returns and redundant requirements. With the gradual introduction of EMBB, URLLC, MMTC3 and other businesses, the central network has gradually transitioned from centralized deployment to distributed deployment. There are many pairs and multiple connections between the central network and the central network. There are traffic interactions between the central network. The business flow of the 5G era is more obvious, as shown in the figure below.
