信息网络安全 ›› 2025, Vol. 25 ›› Issue (4): 536-549.doi: 10.3969/j.issn.1671-1122.2025.04.003

• 专题论文:智能系统安全 • 上一篇    下一篇

三维分布式无线智能系统数据传输路径隐私保护方案

胡宇涵1, 杨高1(), 蔡红叶2, 付俊松1   

  1. 1.北京邮电大学网络空间安全学院,北京 100876
    2.公安部第一研究所,北京 100006
  • 收稿日期:2024-11-30 出版日期:2025-04-10 发布日期:2025-04-25
  • 通讯作者: 杨高 yang_gao@bupt.edu.cn
  • 作者简介:胡宇涵(2000—),男,湖南,博士研究生,主要研究方向为网络空间安全、人工智能|杨高(2001—),女,广西,博士研究生,主要研究方向为4G/5G安全、移动安全;|蔡红叶(1992—),女,北京,硕士,主要研究方向为车联网安全、4G/5G安全和数据安全|付俊松(1989—),男,河北,副教授,博士,主要研究方向为网络空间安全、车联网安全和4G/5G安全
  • 基金资助:
    国家自然科学基金(62136006)

Privacy Protection of Data Transmission Paths in 3D Distributed Wireless Intelligent Systems

HU Yuhan1, YANG Gao1(), CAI Hongye2, FU Junsong1   

  1. 1. School of Cyberspace Security, Beijing University of Posts and Telecommunications, Beijing 100876, China
    2. First Research Institute of the Ministry of Public Security of PRC, Beijing 100006, China
  • Received:2024-11-30 Online:2025-04-10 Published:2025-04-25

摘要:

随着5G/6G无线通信技术与新型智能组网技术的协同发展,三维分布式网络架构正逐步实现空天地海全域覆盖。在该网络体系中,大量智能通信节点通过无线互联形成自主化多跳路由系统,实现信息的动态共享。然而,由于无线信道的广播特性,攻击者可通过窃听网络通信行为并进行关联分析,精确重构消息传输路径拓扑。这种路径反演攻击将直接暴露源节点、目的节点及关键中继节点的位置隐私,对网络安全构成严重威胁。针对三维分布式无线网络的路径隐私保护需求,文章提出基于空间信息混淆的数据传输路径隐匿方案。首先,采用三维Delaunay三角剖分算法将网络空间离散化为若干不规则四面体单元,构建节点的通信邻域集与Delaunay邻域集。其次,设计最优虚拟中继位置选择机制,结合通信邻域与Delaunay邻域拓扑特征,开发虚拟位置引导的定向消息传播算法。该算法通过分布式计算,将数据包精准路由至距离虚拟中继位置最近的物理节点(即随机化中继节点),有效实现传输路径与物理拓扑的解耦。最终,由随机化中继节点担任伪源节点完成数据交付,通过时空维度双重混淆提升路径追踪难度。仿真实验表明,该方案通过引入动态虚拟中继机制,可使信道内有效数据包密度降低42.7%,路径重构攻击成功率降至12.3%以下,显著增强了数据传输路径的不可关联性。该成果为三维分布式网络提供了一种轻量级的位置隐私保护解决方案。

关键词: 安全数据传输, 无线网络, 路径隐私保护, 空间位置信息

Abstract:

With the collaborative development of 5G/6G wireless communication technologies and novel intelligent networking technologies, three-dimensional distributed network architectures are gradually achieving full-domain coverage across space, air, land, and sea. In this network system, a large number of intelligent communication nodes form an autonomous multi-hop routing system through wireless interconnection, enabling dynamic information sharing. However, due to the broadcast nature of wireless channels, attackers can eavesdrop on network communication behaviors and perform correlation analysis to accurately reconstruct the message transmission path topology. Such path inference attacks directly expose the location privacy of the source node, destination node, and key relay nodes, posing a serious threat to network security. To address the need for path privacy protection in three-dimensional distributed wireless networks, this paper proposed a data transmission path obfuscation scheme based on spatial information obfuscation. Firstly, the three-dimensional Delaunay triangulation algorithm was adopted to discretize the network space into several irregular tetrahedral units, constructing the communication neighborhood set and the delaunay neighborhood set of nodes. Secondly, an optimal virtual relay position selection mechanism was designed, and a virtual position-guided directional message forwarding algorithm was developed by combining the topological features of the communication neighborhood and the Delaunay neighborhood. This algorithm, through distributed computation, precisely routed the data packet to the physical node closest to the virtual relay position (i.e., the randomized relay node), effectively decoupling the transmission path from the physical topology. Finally, the randomized relay node acted as a pseudo-source node to complete data delivery, enhancing the difficulty of path tracing through dual obfuscation in spatial and temporal dimensions. Simulation experiments show that by introducing a dynamic virtual relay mechanism, the proposed scheme reduces the density of effective packets in the channel by 42.7%, and decreases the success rate of path reconstruction attacks to below 12.3%, significantly enhancing the unlinkability of data transmission paths. This work provides a lightweight location privacy protection solution for three-dimensional distributed networks.

Key words: secure data transmission, wireless networks, privacy protection of paths, spatial location information

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