The 2017 global fiber optic cable conference has been held in wuhan.More than 700 industry guests from around the world gathered to discuss the future development of the fiber industry.Optical communication industry this year is the most concerned about areas of 5 G, the conference,weileping, director of the science and technology commission of China telecom for 5G keynote speeches, systemic introduced the present and future of 5G, as well as the effect on optical communication industry.
5G carries the key requirements
Weileping introduces that 5G has improved all aspects of 4G: faster rate, lower latency and more connections, the peak rate expectations increase 20 times to 20 GBPS, 20 times talk time delay expected to reduce to 0.5 ms, connection density expected increase 10 times to 1 million/km2.
There is no doubt that this is a huge challenge for the 5G carrier network. According to weileping, 5G has made a lot of demands on the load-bearing network.The first is speed and bandwidth; The second is the delay performance, which should satisfy the end-to-end business deployment of ms level, realize the architecture optimization and flat, reduce the cable routing, and introduce the ultra-low latency equipment of mec and 1μs.Again, network architecture adjustment, including CU/DU separation, core network cloud and so on. Finally, the cost challenge, the transmission cost reduction speed requirement is half of Moore's law, the pretransmission network capacity is the largest, the pressure is also the biggest.
Wei leping introduced the system of 5G standard and commercial process. Looked from the global,The current progress of ITU is to start the recruitment of 5G candidate proposals, plan to release the official spectrum in 2019, and complete the technical specification by the end of 2020. 3GPP plans to complete the basic version of R15 in the second half of 2018, facing the eMBB commercial scene; Complete version of R16 by the end of 2019.
There will be test chips and test phones in the fourth quarter; In 2019, it will be pre-commercial in dozens of hot spots in cities, and in the fourth quarter of that year commercial chips and terminals; In 2020 it will be commercially available in hot spots in hundreds of cities, as well as a number of commercial chips and mobile phones. In 2022, large-scale deployment will be carried out in hot urban areas.
The challenges of 5G
It is a technical challenge, working frequency, in 6 GHZ frequency band, it is hard to find a 3 * 200M z and may eventually have to enable mm available frequency band (greater than 24 GHZ), at the same ti me, 5G era will be deployed small base stations, a lot of how to eliminate the network seamless coverage, "black hole" at present from the technical and cost are difficult to see. In addition, in the high frequency band, the existing GaAs materials are not applicable, the high frequency devices will be short boards, and the existing SAW/BAW/FBAR filters are also difficult to apply in the high frequency band.
Second, investment return and cost challenge. In the age of 5G, it is necessary to reconstruct the prequal function structure, and the return/transfer/pretransmission capacity is multiplied by dozens of times. In many places, CWDM/WDM is required, and the cost will be a great challenge. At the same time, China started building 3G in 2008, and started building 4G in 2015. The free cash flow in 7 years is negative 340 billion yuan. Building a 5G network in less than five years would be very stressful for operators.
5G investment forecast
According to the forecasts of GSMA and the China institute of information and communication, the global 5G connection will exceed 100 million in 2021, of which China is 44 million. It is expected to reach 1.1 billion globally in 2025 and 428 million in China.
So, as an important pole of global 5G business, China's operators will have a lot of "blood" in the area of 5G, and presumably the suppliers are concerned. China's 4G investment is about $117 billion, 1.4 times the 3G network, and is an acceptable capital expenditure, according to wei. According to China's information and communications research institute predicted that 2020 to 2030, 10 years network with a total investment of up to $411 billion, or about 2.8 trillion yuan, 3.5 times that of the 4 g network, this is China's operators. "I think the Chinese operators can accept 280 billion yuan." "He joked.
In addition, according to Jefferies, the total investment in the network between 2019 and 2025 is $180 billion, or about 1.22 trillion yuan, or 1.5 times that of 4G investment. He thinks this is acceptable.
Wei leping also stressed that 5G construction will bring a huge opportunities to the optical communication industry. First of all, optical fiber is the first to benefit. The third beneficiary is high-speed access system.
5G construction strategy
For China's 5G strategy, Mr Wei believes there are two main drivers. One is the national strategic drive, it will be very aggressive, 5G be stimulating investment, leading scientific and technological innovation, to achieve industrial upgrading, promote economic prosperity, to carry on the reform of "supply side" main fulcrum, times to give very high expectations. In this case, China will build a fully covered 5G network in an active or passive and irrational way.
The second is a pragmatic approach. Investment in market demand, in that case, is expected to enter the stage of large-scale commercial use by around 2022. Construction planning is also based on traffic flow, from urban hot spots to gradually expand. "I believe everyone will choose the first construction strategy." In the applause, wei always spoke the voice of everyone.
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SFP28 SR meets the RoHS standard. This module contains the proven circuit and VCSEL technology of the technology, which provides reliable life, high performance, and consistent service.
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