Emergency Communications in Post-Disaster Scenarios: IoT-Enhanced Airship and Buffer Support

作     者：He, Yixin Huang, Fanghui Wang, Dawei Chen, Bin Zhang, Ruonan 

作者机构：Jiaxing Univ Coll Informat Sci & Engn Jiaxing 314001 Peoples R China Jiaxing Univ Prov Key Lab Multimodal Perceiving & Intelligent Jiaxing 314001 Peoples R China Jiaxing Key Lab Smart Transportat Jiaxing 314001 Peoples R China Northwestern Polytech Univ Sch Elect & Informat Xian 710072 Peoples R China 

出 版 物：《IEEE INTERNET OF THINGS JOURNAL》 (IEEE Internet Things J.)

年 卷 期：2025年第12卷第9期

页      面：11457-11468页

核心收录：

学科分类：0810[工学-信息与通信工程] 0808[工学-电气工程] 08[工学] 0812[工学-计算机科学与技术（可授工学、理学学位）] 

基　　金：National Key Research and Development Program of China [2020YFB1807003] National Natural Science Foundation of China [62401230, 62271399, 62201462, 62171385] Zhejiang Provincial Natural Science Foundation of China [LQ24F010003] Key Research and Development Program of Shaanxi Province [2023-ZDLGY-06] Science and Technology Planning Project of Jiaxing [2022AY10021] 

主　　题：Internet of Things Information security Power control NOMA Optimization Interference 5G mobile communication Wireless communication Resource management Protocols Airship-and-buffer aided cooperative relaying systems (CRSs) hybrid nonorthogonal multiple access (NOMA)/ orthogonal multiple access (OMA) mechanism post-disaster emergency communication (PDEComs) weighted secure sum rate (WSSR) maximization 

摘      要：Ensuring reliable and secure emergency communications in post-disaster scenarios is challenging, particularly when mobile communication infrastructures are damaged. In response to challenges in post-disaster emergency communications (PDEComs), this article proposes a cooperative relaying system (CRS) enhanced with Internet of Things (IoT) technology. The system features an airship equipped with buffers that serves as an aerial relay, designed to improve data transmission performance and communication security. To achieve this, it incorporates physical layer security techniques. Additionally, we introduce a hybrid mechanism that combines nonorthogonal multiple access (NOMA) and orthogonal multiple access (OMA), facilitating flexible resource allocation in IoT-enhanced CRSs. To fully leverage the advantages of the proposed airship-and-buffer aided CRS, we formulate a weighted secure sum rate (WSSR) maximization problem, jointly considering the power control, mode selection, and information security. Initially, we address the formulated WSSR maximization problem using Lyapunov optimization. Subsequently, the primal problem is divided into four cases, from which optimal power control and mode selection policies can be derived. This process is constrained by the stability of buffer queues and privacy transmission requirements. Finally, the simulation results show that the proposed scheme outperforms state-of-the-art schemes in terms of the WSSR. By adopting the airship and the hybrid NOMA/OMA mechanism, the WSSR can be increased by 29.9% and 96.4%, respectively. Moreover, we explore the impact of network parameters (e.g., the distance between the eavesdropper and airship, and decoding thresholds) on information security.