移动通信2026，Vol.50Issue(1)：50-58,9.DOI:10.3969/j.issn.1006-1010.20251102-0001
面向非可信中继系统的无线携能安全通信
Secure Simultaneous Wireless Information and Power Transfer for Untrusted Relay Systems
摘要
Abstract
Addressing the communication security problem in cooperative transmission systems with energy-constrained untrusted relays,this paper proposes a jamming-assisted secure simultaneous wireless information and power transfer(SWIPT)scheme.Considering that the eavesdropping behavior of untrusted relays depends on their current energy storage,the system aims to regulate wireless energy harvesting to intervene in relay operating states,thereby reducing the eavesdropping probability from a long-term communication perspective.With the objective of maximizing the long-term average secrecy capacity,a joint optimization problem of adaptive relay selection and power allocation is formulated.Leveraging Lyapunov optimization theory,the long-term average optimization problem is transformed into a series of discrete-time mixed-integer fractional programming(MIFP)problems.For the resulting MIFP problem,a relay selection strategy that maximizes average secrecy capacity is proposed,and an epigraph reformulation-assisted successive convex approximation power allocation algorithm is designed to obtain the KKT solution for joint power allocation.Simulation results demonstrate that compared with existing best energy and maximum link relay selection strategies,the proposed relay selection strategy significantly enhances the system average secrecy capacity.Furthermore,unlike conventional untrusted relay cooperative transmission systems,in the considered scenario,system security improves with an increasing number of relays under low signal-to-noise ratio conditions.关键词
非可信中继/无线携能通信/概率窃听/物理层安全Key words
untrusted relay/simultaneous wireless information and power transfer(SWIPT)/probability eavesdropping/physical layer security分类
信息技术与安全科学引用本文复制引用
冯云鹏,陈健,吕璐,贺冰涛..面向非可信中继系统的无线携能安全通信[J].移动通信,2026,50(1):50-58,9.基金项目
国家自然科学基金项目"面向6G物联网的智能超表面赋能共生非正交传输技术研究""面向Cell-Free网络的协同虚拟化与动态传输"(62271368,62371367) （62271368,62371367）
陕西省重点研发计划"工业互联网场景下基于协作NOMA的短数据包通信技术"(2023-ZDLGY-50) （2023-ZDLGY-50）
