王虎威, 叶能, 安建平
（北京理工大学，中国 北京 100081）
摘要：通过对高铁车载缓存系统的概念、在工作流程的各个阶段遇到的问题以及相应的智能化解决方案进行详细的介绍，指出高铁车载缓存可以有效地减少移动设备与路边基站直连通信的次数，提升乘客的内容服务体验。但是，高铁车载缓存系统在实际的应用中仍然存在诸多问题需要解决，包括高铁与路边基站的协同缓存、乘客请求数据缺失下的请求规律挖掘、以及通信、计算、缓存资源的联合管控。
关键词：低轨卫星星座；多星协作；虚拟阵列；信号检测
Multi-Satellite Cooperative Signal Detection for LEO Constellations
WANG Huwei, YE Neng, AN Jianping
(Beijing Institute of Technology, Beijing 100081, China)
Abstract: Low earth orbit (LEO) satellite communications have become a research hotspot in the communication field in recent years due to its low latency, small path loss, and low-cost platform. With thousands to tens of thousands of satellites in the future LEO constellations, cooperative signal processing technology can tap the scale advantages of the mega constellation by utilizing the distributed transceiving and processing capability of multiple satellites, which makes it a promising technology to enable ubiquitous access in 6G.The recent research progress related to multi-satellite cooperative signal detection technology is analyzed, concerning both the technical routes and the implementation scenarios. Besides, the application prospect of multi-satellite cooperation technology based on the concept of the virtual array in LEO constellations is also explored.
Keywords: LEO constellations; multi-satellite cooperation; virtual array; signal detection
.png)
.png)
.png)
