面向6G的星地融合网络频谱共享技术

摘要：卫星网络被公认为是下一代移动通信系统的重要组成部分，其与现有的地面蜂窝网络实现优势互补形成星地融合网络，可以为全球范围内的海量用户提供无处不在的宽带接入服务。而两网如何高效共享有限的频谱资源、缓解同频共存干扰成为当前的技术难点与热点问题之一。分析了星地融合网络频谱共享时存在的典型干扰类型，并对星地频谱共享场景中系统间干扰进行了仿真。介绍了星地频谱共享需要进一步研究的关键技术，并总结了星地融合网络频谱共享面临的挑战。本研究可为未来星地融合网络频谱共享提供参考与借鉴。

关键词：6G；星地融合网络；频谱共享；同频干扰

Abstract: Satellite network has been widely recognized as an indispensable part of the next-generation mobile communication system, which together with the existing terrestrial cellular network can provide ubiquitous and wideband access service for massive users worldwide by taking the advantages of each to form satellite-terrestrial integrated network. How to efficiently share the limited spectrum resources between the two networks and mitigate coexistent interference has become one of the current technical difficulties and hot topics. The typical types of interference existing in the spectrum sharing of satellite-terrestrial integrated network are analyzed, and the inter-system interference is simulated. The potential key technologies for spectrum sharing in the satellite-terrestrial integrated network are analyzed, and the challenges of spectrum sharing in the satellite-terrestrial integrated network are summarized. This study can server as a reference for spectrum sharing in the future satellite-terrestrial integrated network.

Keywords: 6G; satellite-terrestrial integrated network; spectrum sharing; co-channel interference