China needs to break through key technologies to build a safe and reliable space information network with global coverage, said Yin Hao, a member of the Chinese Academy of Sciences.
Yin Hao pointed out that more than 60 percent of China's land area, including the ocean, is without mobile signal coverage, and the networks of the three major carriers only cover the mainland and areas near the sea.
In addition, there are mountainous areas, borders, deserts and other areas where network coverage is not ideal, he said.
Against this backdrop, the application scenarios for space information networks are vast: expanding terrestrial Internet to sea, air, space and even deep space; constellation-based networking for seamless global coverage of Internet access; and supporting broadband Internet access with the rapid increase in satellite capacity.
In addition, the Internet of Things in space also has applications in environmental monitoring, forest fire prevention, ocean monitoring, flood warning, and collaborative control of military drones, missiles, ships and vehicles.
According to Yin Hao, the current global mobile communication services cover about 70 percent of the population and only about 20 percent of the land area, while 6G will integrate satellite communication to achieve seamless global coverage.
He stressed that space information network, 5G and 6G are not a substitute for each other, but complementary to each other, and the networks of heaven and earth will be deeply integrated in the future.
Yin Hao said that the world's most well-known space information networks include Musk's Starlink project and Amazon's Kuiper project. However, China still does not have a global space information network, which is not commensurate with China's status as a major network and space power.