计算机工程 ›› 2019, Vol. 45 ›› Issue (10): 139-143,149.doi: 10.19678/j.issn.1000-3428.0052221

• 安全技术 • 上一篇    下一篇

基于非最佳用户级联方案的异构网络物理层安全研究

陈玉宛1, 贾向东1,2, 范巧玲1, 颉满刚3, 纪珊珊1   

  1. 1. 西北师范大学 计算机科学与工程学院, 兰州 730070;
    2. 南京邮电大学 江苏省无线通信重点实验室, 南京 210003;
    3. 中山大学 数据科学与计算机学院, 广州 510006
  • 收稿日期:2018-07-26 修回日期:2018-09-29 出版日期:2019-10-15 发布日期:2018-10-19
  • 作者简介:陈玉宛(1994-),女,硕士研究生,主研方向为网络安全、无线通信;贾向东,教授、博士、博士后;范巧玲,硕士研究生;颉满刚,博士研究生;纪珊珊,硕士研究生。
  • 基金项目:
    国家自然科学基金(61861039,61561043,61261015);甘肃省科技计划"无人机关键技术研究"(18YF1GA060);西北师范大学青年教师科研能力提升计划创新团队项目"下一代无线网络关键技术"。

Research on Physical Layer Security for Heterogeneous Network Based on Non-Optimal User Cascade Scheme

CHEN Yuwan1, JIA Xiangdong1,2, FAN Qiaoling1, XIE Mangang3, JI Shanshan1   

  1. 1. College of Computer Science and Engineering, Northwest Normal University, Lanzhou 730070, China;
    2. Jiangsu Provincial Key Laboratory of Wireless Communications, Nanjing University of Posts and Telecommunications, Nanjing 210003, China;
    3. School of Data and Computer Science, Sun Yat-sen University, Guangzhou 510006, China
  • Received:2018-07-26 Revised:2018-09-29 Online:2019-10-15 Published:2018-10-19

摘要: 基于非最佳用户级联(UC)方案,研究多层异构网络(HetNets)的物理层安全性能。利用随机几何运算将网络节点建模为齐次泊松点过程,并借助概率统计数学工具,推导出多层HetNets的系统安全概率表达式,分析发射功率、安全门限及窃听者密度对系统安全概率的影响。仿真结果表明,当基站发射功率较小时,非最佳UC方案的安全性能优于传统最佳UC方案,当基站发射功率较大时,两者安全性能趋于相同,且非最佳UC方案下的系统安全概率随着发射功率的增大先减小后增大,稳定性更高。

关键词: 异构网络, 用户级联, 平均偏置接收功率, 齐次泊松点过程, 随机几何, 安全性能

Abstract: Based on the non-optimal User Cascade(UC) scheme,the physical layer security performance of multi-layer Heterogeneous Networks(HetNets) is studied.The network nodes are modeled as homogeneous Poisson Point Process(PPP) by using stochastic geometry operations,and the system security probability expression of multi-layer HetNets is derived by means of probability and statistics mathematical tools.The influence of transmission power,security threshold and eavesdropper density on the system security probability is analyzed.Simulation results show that when Base Station(BS) transmission power is relatively small,the security performance of the non-optimal UC scheme outperforms the traditional optimal UC scheme.When transmission power is relatively large,the security performance of the two schemes tends to be the same.Then,the system security probability of the non-optimal UC scheme decreases first and then increases with the increase of the transmit power,and the stability is higher.

Key words: Heterogeneous Networks(HetNets), User Cascade(UC), Average Biased Received Power(ABRP), homogeneous Poisson Point Process(PPP), stochastic geometry, security peformance

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