Space information networks (SIN) are facing an ever-increasing thirst for high-speed and high-capacity seamless data transmission due to the integration of ground, air, and space communications. However, this imposes a new paradigm on the architecture design of the integrated SIN. Recently, reconfigurable intelligent surfaces (RISs) and mobile edge computing (MEC) are the most promising techniques, conceived to improve communication and computation capability by reconfiguring the wireless propagation environment and offloading. Hence, converging RISs and MEC in SIN is becoming an effort to reap the double benefits of computation and communication. In this article, we propose an RIS-assisted collaborative MEC architecture for SIN and discuss its implementation. Then we present its potential benefits, major challenges, and feasible applications. Subsequently, we study different cases to evaluate the system data rate and latency. Finally, we conclude with a list of open issues in this research area.
翻译：由于地面、空中和空间通信的一体化,空间信息网络正面临着对高速和高容量无缝数据传输的日益强烈的渴求,然而,这为综合空间信息网络的建筑设计提出了一个新的范例。最近,可重新配置的智能表面和移动边缘计算(MEC)是最有希望的技术,设想通过重新配置无线传播环境和卸载来提高通信和计算能力。因此,SIN的相趋一致的RIS和MEC正在成为一项努力,以获得计算和通信的双重好处。在本篇文章中,我们提议为空间信息网络建立一个由RIS协助的MEC协作结构,并讨论其实施。然后我们介绍其潜在好处、重大挑战和可行的应用。随后,我们研究不同的案例,以评价系统数据率和耐久性。最后,我们以这一研究领域的公开问题清单结束。
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