Satellite–terrestrial networks have garnered significant attention in recent years and are extensively applied in intelligent transportation and emergency rescue. This paper provides a comprehensive review of the latest research advancements in satellite–terrestrial integrated network (STIN) technologies from a network perspective, dividing STIN technologies into three categories according to network service flows—namely, topology maintenance, network routing, and orchestration transmission technologies. Furthermore, a novel network-layer perspective is considered to examine the applications of STINs across various domains, along with related frameworks, platforms, simulators, and datasets. Finally, this paper explores the mainstream research directions in STIN technologies, with an innovative focus on the network layer. It reviews the existing literature, outlines future trends, and discusses opportunities for collaboration with related fields.

中文翻译：

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6G 中星地一体化网络的网络层视角：综合综述

近年来，星地网络受到了广泛关注，并广泛应用于智能交通和应急救援等领域。该文从网络角度全面综述了星地一体化网络 （STIN） 技术的最新研究进展，根据网络业务流向将 STIN 技术分为拓扑维护、网络路由和编排传输技术三类。此外，考虑了一种新的网络层视角来检查 STIN 在各个领域的应用，以及相关的框架、平台、模拟器和数据集。最后，本文探讨了 STIN 技术中的主流研究方向，并创新地关注网络层。它回顾了现有文献，概述了未来趋势，并讨论了与相关领域合作的机会。