Wei Leping, executive deputy director of the Communication Technology Committee of the Ministry of Industry and Information Technology, director of the China Telecom Science and Technology Committee and chairman of the China Optical Network Symposium, said that 5G competition It is evolving into a competition for fiber infrastructure, and fiber infrastructure resources have become the mainstay of 5G differentiated competition. At the same time, 5G will bring the following three opportunities to optical communications:
Fiber is the first beneficiary. Wei Leping pointed out that the large increase in the number of 5G base stations makes the fiber the first beneficiary. According to the existing 3.5GHz frequency band, due to the high-frequency band and poor coverage, the difference is 14dB compared with the 1.8GHz frequency band. The number of base stations may be doubled; Wave applications, the number of base stations will increase significantly. According to the Fiber BB Association data, the amount of 5G fiber is 16 times that of 4G. Considering that the density of 4G base stations in China is already very high, the number of 5G base stations will not increase so much in the urban area between 200-500 meters. The fiber consumption can be estimated by twice the 4G, and there are at least several hundred million core kilometers. In addition, non-technical and irrational competition considerations may lead to huge fiber demand in anti-real market expectations, creating opportunities for pre-transmission single-mode general-purpose fiber.
The optical module is the second beneficiary. Wei Leping pointed out that the large increase in the number of 5G base stations makes the optical module the second beneficiary, assuming that the number of 5G base stations in the 3.5 GHz band is twice that of the 1.8 GHz 4G base station, and the base station is considered to be three sectors, and the network architecture is in accordance with the large concentration. Small concentration and not concentrated consideration, it is expected that the entire 5G network will bring tens of millions of 25/50Gbps high-speed optical module usage; further consider the huge development space of China’s data center, currently the United States accounts for 45% of IDC, China’s broadband users It is three times that of the United States, but China accounts for 8% of the IDC, and the development space for high-speed optical modules is even more impressive.
The high-speed optical access network system is the third beneficiary. Wei Leping pointed out that the huge capacity and new architecture of 5G bring development opportunities and cost pressure to the bearer network, and the high-speed optical access network system becomes the third beneficiary. The new 5G architecture expands the backhaul/preamble capacity by several tens of times, reaching the tens of hundreds of Gbps levels. It is necessary to introduce passive WDM based on 25/50 Gbps, active WDM OTN/M-OTN, SPN, WDM PON, and Tuning lasers, high-speed optical modules and WDMs are hugely demanding and price sensitive; eCPRI systems will become the dominant underlying interface technology; 5G new architectures need to introduce F1exE interfaces to support network slicing; introduce EVPN and SR simplified control protocols, enhance flexible scheduling capabilities; The architecture enables automatic distribution and flexible adjustment of services.
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