Build 5g microwave back to become a sharp weapon
2020-06-22
Build 5g microwave back to become a sharp weapon Expected to finish reading in 8 minutes From a global perspective, microwave back propagation has become a mainstream way of back propagation. In 2017, sky light research, a third-party market research institution, published the article "5g retransmission, microwave surpasses expectations". It points out that 50% - 60% of mobile base stations in the world are retransmitted by microwave at present. With the acceleration of 5g deployment, the network capacity, complexity and delay requirements are higher, and the number of mobile base stations will increase. Microwave is an important transmission method in the fiber-free scenario, With the evolution of 5g, it will continue to expand. Ericsson microwave outlook released in 2018 mentioned that the solution of optical fiber and microwave integration is the mainstream way of 4G evolution and 5g return. By 2023, the 40% base stations will be back to wireless transmission. If China, Chinese mainland, Taiwan, Korea and Japan are excluded, the proportion of wireless backhaul will be as high as 65% by 2023, because there are a large number of 4G base stations in Northeast Asia, and their return depends mainly on optical fiber, which will reduce the proportion of global wireless backhaul. As mentioned in the report 5g wireless return issued by ETSI in November 2018, wireless return technology has been applied to 50% of base station connections in the world, and it is obvious that wireless return has become an important scheme for 5g rapid deployment and economy. There are some shortcomings in microwave transmission mode, mainly sight distance transmission, and when there is too much moisture or dust in the air, the quality of microwave signal will be reduced. Of course, this does not affect the share of microwave echo in overseas market. It can be seen that the 4G era microwave echo is the mainstream echo mode, and the 5g era will continue this mode. However, the inherent characteristics of 5g challenge the microwave return, such as the increase of bandwidth, the scarcity of public frequency band, and the strictness of network experience. Previously, the global microwave return mainly used the 6-42ghz band, with an average return capacity between 50Mbps and 500mbps. Obviously, this is unable to meet the demand of base station return capacity in 5g era. Therefore, E-band begins to appear, i.e. 70ghz-80ghz band. E-band really provides a strong support for 5g's return. In May 2019, Deutsche Telekom and Ericsson cooperated to achieve 100gbps return rate on the 1.5km E-band microwave link for the first time, which is 10 times of the current commercial microwave return rate and can meet the demand of 5g return. Huawei occupies the largest share of the microwave transmission market, with a 29% share in the fourth quarter of 2019. Earlier, Ren Zhengfei mentioned in an interview that "there are not many microwave manufacturers in the world, and Huawei is the most advan...
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