摘要
In the rapidly evolving landscape of modern communication networks,Space-Air-Ground-Sea Integrated Networks(SAGSIN)have emerged as a transformative paradigm,transcending traditional boundaries and offering unparalleled connectivity possibilities across diverse environments.SAGSIN represents a holistic approach to networking,poised to revolutionize global connectivity by seamlessly integrating satellite,aerial,terrestrial and maritime networks.SAGSIN embodies a complex ecosystem,where each constituent network element plays a distinct role in shaping its visionary capabilities.Satellite networks form the celestial backbone,promising global coverage and bridging remote regions.Space-based networks,including high-altitude communication platforms and self-organizing drone networks,enhance coverage in challenging terrains while providing dynamic adaptability.Ground-based networks cater to the need of densely populated areas,ensuring seamless access to vital services and enriching the SAGSIN ecosystem.Maritime networks,empowered by advanced wireless technologies and satellite advancements,address unique communication needs of the maritime industry.
