Analysis and suggestions on inter-satellite laser communication of satellite Internet
Satellite communication and terrestrial mobile communication have strong complemented co-benefits.Satellite Internet is the hot spot supporting current industrial development and an important part of the future 6G network.Global coverage requires interstellar networking,but inter-satellite communication bandwidth requirements and the instability brought by the free space channel pose new challenges to the space bearer network.Inter-satellite communication technologies and link interface technologies were compared and analyzed.An optical transport net-work(OTN)carrier network solution based on inter-satellite laser was proposed,which could fully leverage the ad-vantages of the maturities and the economies of the scaled ground optical communication.It constructs a satel-lite-terrestrial integrated network with strong cost-efectivity,compatibility,and scalability.Finally,the technological directions and evolutions of the inter-satellite laser communication were discussed,and suggestions for industrial de-velopment in China were proposed.