Study on the key technologies of satellite communication for space-air-ground-sea integration
Building a space-air-ground-sea integrated network is one of the visions of 6G,and it is also an important means to realize the"intelligent connection of all things".The key element of the future space-air-ground-sea inte-grated network is satellite communication,which provides global coverage and wide-area connectivity.The basic ar-chitecture and development status of the space-air-ground-sea integrated network were discussed,and the satellite communication technology for the space-air-ground-sea integrated network was introduced.Then,several key tech-nologies of satellite communication in the space-air-ground-sea integration scenario were analyzed,including adap-tive air interface,multi-satellite cooperative robust beamforming,multi-dimensional resource on-demand scheduling,networking/network management,and network slicing technology.Finally,the challenges and application prospects of satellite communication were discussed under the development trend of space-air-ground-sea integration in the future.
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