5G and beyond defined space-terrestrial integrated networks (STINs) have become an emerging research field, thanks to the rapid development of future generation communication technologies and satellite networks. Ultra-reliable low latency STINs utilizing 5G and beyond technologies put forward requirements for the trustworthiness of network terminals and the convenience of data aggregation. Some research work has been carried out in this field. However, the secure aggregation in STINs between isolated terminals that lack connection with base stations and data centers needs to be further studied. In this paper, a trustworthiness based secure data aggregation scheme with low latency for isolated terminals in 5G and beyond defined STINs is proposed. The trustworthiness of the isolated terminals is evaluated by the satellites and the data centers to increase the reliability of the aggregated data. A lightweight trusted special channel establishment method between an isolated terminal and a data center is presented. The security and performance analysis shows that the novel proposal is secure and efficient.

由于下一代通信技术和卫星网络的飞速发展，5G及以后定义的地面-地面综合网络（STIN）已成为新兴的研究领域。利用5G及更高技术的超可靠，低延迟STIN对网络终端的可信度和数据聚合的便利性提出了要求。在这一领域已经进行了一些研究工作。但是，与基站和数据中心缺乏连接的孤立终端之间的STIN中的安全聚合需要进一步研究。本文提出了一种基于信任度的安全数据聚合方案，该方案针对5G及以上定义的STIN中的隔离终端具有低延迟。隔离终端的可信赖性由卫星和数据中心进行评估，以提高聚合数据的可靠性。提出了一种隔离终端与数据中心之间的轻量级可信特殊通道建立方法。安全性和性能分析表明，该方案是安全有效的。