2021-04-30

What is the chance of winning for the Chinese version of “Starlink”?

By yqqlm yqqlm

What is the chance of winning for the Chinese version of “Starlink”?

This is also an important reason for the development of satellite communications. Take my country as an example. Although the population coverage rate of my country’s network has reached 99% through universal services, there are still more than 60% of the country’s land area, such as mountains, grasslands, plateaus, Gobi, and deserts, which have almost no mobile communication network coverage. The satellite Internet can solve the broadband communication problems of ships, airplanes, and scientific research in remote areas such as oceans, forests, and deserts, and become a useful supplement to ground mobile communications.

This time the State-owned Assets Supervision and Administration Commission established China Satellite Network Group Co., Ltd., under the overall planning, the development of my country’s satellite communications will undoubtedly enter the fast lane. Through the institutional advantages of concentrating power to do major tasks, quickly build a ubiquitous The satellite network of China has entered the stage of international competition.

Twisted into a rope, concentrate on doing big things

In fact, before the establishment of China Satellite Networks Group Co., Ltd., domestic satellite constellations have already begun to compete, especially in the first time the satellite Internet was used. After being included in the major category of communication network infrastructure and “upgrading” the new infrastructure strategy, the development has become even more rapid. The Hongyan fusion constellation of Aerospace Science and Technology, the Rainbow Cloud constellation of Aerospace Science and Industry, the Xingyun constellation of China Electric Science and Technology, and the Milky Way constellation of the private company Galaxy Space… have all launched pilot satellites and conducted relevant verification tests.

It can be said that one of the main purposes of establishing this professional company by the State-owned Assets Supervision and Administration Commission is to solve the current chaos of various constellations, twist them into a rope, and use them everywhere, in order to meet the needs of my country to build a global The important task of broadband satellite communication network, and to the international stage, to meet the important task of future international communication needs.

At the inaugural meeting of China Satellite Networks Group Co., Ltd., State Councilor Wang Yong emphasized that the establishment of China Satellite Networks Group Co., Ltd. is a major move based on the overall national strategy and in compliance with the general trend of the technological industry. In particular, it is mentioned that we must do a good job in top-level design and resource integration, strengthen scientific and technological research, focus on improving the innovation capability and overall efficiency of the entire industry chain, and ensure that the system is safe, stable, and independent and controllable.

At the China Dongfang Red Satellite Co., Ltd.’s 2020 annual performance briefing held recently, Ge Yujun, the company’s director and president, also pointed out that it is understood that the “Hongyan” system of the Aerospace Science and Technology Group and the Aerospace Science and Technology Group The group’s “Hongyun” system and related constellation construction plans are being planned by relevant state departments. “We understand that the original plan of the “Hongyan” constellation will undergo major changes.”

All the time, China Known as the system advantage of concentrating resources to do big things, after all, to quickly build a ubiquitous satellite network requires a lot of investment and overall planning of resources from all parties. There is a main body to make overall planning and construction, and the efficiency is more prominent. In addition, both satellite and ground mobile communications are resource-constrained systems, and frequency resources and satellite orbit resources are as scarce as commercial land in cities. They must not tolerate so many constellation homogenization competitions, and it is necessary to coordinate the construction.

Complementarity is greater than competition and meet each other.

With the development of satellite communications, there has always been a view that satellite Internet will overturn and replace terrestrial cellular communications networks. As for the establishment of China Satellite Networks Group Co., Ltd., some people believe that this is the fifth largest communications operator in China, and it will have an impact on traditional communications operators and may replace them.

The author believes that traditional operators’ terrestrial cellular communication networks and satellite communication have their own main tracks, and each has its own advantages and disadvantages. They also meet the needs of different user groups. The two are not mutually exclusive. In order to replace the relationship, but to complement each other, it must meet each other.

Previously, Dr. Chen Shanzhi, Deputy General Manager, Director of the Expert Committee of China Information and Communication Technology Group, Director of the State Key Laboratory of Wireless Mobile Communications, and IEEE Fellow Dr. Chen Shanzhi pointed out in an interview with C114 that the requirements, applications, technology, etc. Judging from multiple dimensions, the current low-orbit satellite communications are complementary to ground communications such as 5G.

Musk’s original words are also, “Starlink will provide high-speed broadband Internet services to areas where access is unreliable, expensive or completely unavailable.” Chen Shanzhi emphasized that, objectively speaking, in most satellite communications industries, there is no direct competition with terrestrial mobile communications for users to compare the communications capacity of the system.

In addition, from the perspective of communication capabilities, the communication capabilities of a satellite and a ground base station are roughly the same. In the future, the number of 5G base stations in the world will exceed 10 million, and the number of low-orbit satellites will be 10,000. The difference between the two Thousand times. This is destined to be only a supplement to 5G in terms of satellite communication capacity, user scale, and industrial scale.

Therefore, mobile broadband Internet access in densely populated and economically developed areas such as cities will still be based on 5G and other terrestrial cellular communication networks, supplemented by low-orbit satellite communications; while air, ocean, and forest Mobile broadband communications in deserts and remote areas will be based on low-orbit satellite communications. In addition, satellite communications are also an important means of communication in the emergency rescue process of sudden natural disasters.

Satellite-ground integration, release greater value

It can be said that the integration and complementary development of satellite communications and terrestrial communications will release greater market value. Last year, at the “5G+ Aerospace Convergence Network Technology Seminar” hosted by China Mobile Research Institute, Wan Yi, deputy director of the Standards Institute of China Academy of Information and Communications Technology, pointed out that satellites are used to achieve global ubiquitous coverage and provide continuous connection capabilities. Ground base stations to achieve coverage of hotspot areas and provide high-speed transmission capabilities can give full play to the advantages of the two networks, achieve complementary advantages, and natural integration, which has strong social and economic significance.

However, in the process of integration and development, due to the incompatibility of existing standards, it is not possible to well support the development needs of the business. Therefore, the integration of aerospace information network standards has become an inevitable choice for the industry chain. As for how to achieve this, Wan Yi suggested: First, break through professional barriers, learn from each other’s successful experience, and achieve technology interoperability, business complementarity, talent interaction, and industry chain integration; second, guide system design through commercialization requirements, and pass requirements. Analysis, scenario definition, technical indicators are sorted out to promote the formulation of standards; the third is to unite and form a joint force to jointly promote the construction of industry standards and national standards, and actively speak in the International Organization for Standardization and form intellectual property rights.

At the same time, with the large-scale commercial use of 5G, 6G research has been put on the agenda in accordance with the evolutionary rhythm of mobile communications every decade. According to the development vision of 6G, we will construct a global connection integrating terrestrial communication network, satellite communication network and deep-sea ocean network to realize the integration of air, space and sea. Therefore, advancing the development of satellite-ground integration at this stage will provide maximum support for 6G research.

As Chen Shanzhi said, 6G will establish a ubiquitous mobile communication network in the air, sky, earth and sea. my country’s early exploration of the compatibility of satellite communications and 5G will provide the future of 6G organic integration. A solid foundation has been laid for the development of orbital satellite communications and ground mobile communications. The future 6G convergence refers to a communication technology standard system that encompasses satellite mobile communications and ground mobile communications, and user terminals adopt unified identification and access across the entire network, and no longer distinguish between satellite and ground systems for unified management.