In the past, the G of 3G, 4G, and 5G we used was generation, meaning which generation. In 2014, South Korea's Samsung Electronics first developed a 5G network. 5G is hundreds of times faster than 4G, with peak transmission reaching 10G/second in the 28GHZ band. So what transmission technology is used in 5g?
Communication relies on electromagnetic waves. To put it simply, 5G is an electromagnetic wave with a very high frequency. The frequency of 5G is 10 times higher than that of 4G, and the spectrum is wider. It is like widening the road so you can walk more Cars are the same, so the more information is transmitted at the same time, the faster the network speed will be. (Recommended learning: PHP video tutorial)
5G base stations have higher requirements for transmission networks. According to current estimates, 5G transmission networks need to be 40G or 100G MAN support. The single user download speed of LTE is 100Mbps for TD-LTE base station and 150Mbps for FDD-LTE base station.
Take the current LTE base station, which is the equipment that is called a 4G base station by the operator. The maximum download speed of a single user per carrier is 100Mbps/150Mbps, which corresponds to the TD-LTE base station and the FDD-LTE base station respectively. (20M bandwidth).
The current transmission bandwidth of a single base station is 1Gbps. China Mobile is relatively wealthy and basically provides 6Gbps transmission.
Due to the fast download speed of the 5G base station, the single-user download speed in the maturity period can reach 10Gbps. In the early stage of 5G network, the single-user download speed is about 1.3Gbps-2Gbps.
Since 5G has more access users, more transmission resources are required per unit area. According to preliminary estimates in the industry, the transmission resources of a single base station may be configured at 40Gbps in the initial stage, and the configuration in hotspot areas may be 100Gbps. , purchasing a large number of 40G/100G optical modules from China's three major operators can also see that the operator's expected configuration may be based on this.
The reason why optical transmission can expand such a large bandwidth is mainly due to the use of DWDM (Wavelength Division Multiplexing_) technology.
Currently, Huawei in my country has completed a breakthrough in wavelength division 400G transmission technology. In this area, Huawei's technical strength is also very strong.
The single-user download speed of 5G can also reach 1.3-2Gbps in the early stage of 5G. This is mainly because 5G uses many new technologies to meet such high download speeds.
After the launch of 5G, many high technologies that were not available before will become available.
For example, for driverless driving, using smart terminals to share 3D movies, games and other programs, etc. If 4G is stuck, the car will have an accident and a life will be lost. 5G will be no problem, and because The substantial improvement in efficiency can also greatly increase the battery life of smart devices. Therefore, the application of 5G is the real arrival of the new era of mobile Internet. For more PHP-related technical articles, please visit
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