Survey of routing technologies for the satellite Internet
With its evolution of global coverage,flexible access,and reliable transmission,the satellite Internet is the key to constructing a space-air-ground integrated information network.Due to the rapid expansion of constellation scale,complex network topology and diverse service requirements,there is increasing pressure on transmission over the satellite Internet.Routing is responsible for path selection and data forwarding between satellites,which is important to improving the efficiency of inter-satellite transmission and ensuring the quality of service.By considering inter-satellite routing,first,the basic structure and working mechanisms of the satellite Internet are reviewed.According to the challenges of inter-satellite networking,routing technologies are systematically reviewed from the perspectives of dynamic information perception,network failures model,and cross-layer hybrid networking.In addition,the research on routing technologies in different scenarios is analyzed,with the applicability of various existing solutions studied when the on-board computing and storage capabilities are limited.Finally,by combining the bottlenecks of current satellite Internet routing and emerging network technology,future research hotspots are prospected.
万方数据
维普
