异构密集无线网络的安全容量研究

项目名称： 异构密集无线网络的安全容量研究

项目编号： No.61501057

项目类型： 青年科学基金项目

立项/批准年度： 2016

项目学科： 无线电电子学、电信技术

项目作者： 徐瑨

作者单位： 北京邮电大学

项目金额： 20万元

中文摘要： 随着用户业务量的快速增长，融合蜂窝与热点的无线异构密集部署将成为下一代移动通信网的重要特征，并将导致严重的用户间的干扰问题。从信息论角度出发，干扰信号可被非法用户利用造成信息泄露，从而引发安全问题。本项目拟从物理层安全角度切入，研究异构密集网络的安全建模及其安全传输技术。针对异构密集网络的安全建模，拟基于随机几何理论，建立表征基站多样性、合法用户和窃听用户随机性、同层/跨层干扰等特性的安全容量模型，并推导安全连接概率和安全容量；利用随机矩阵理论研究全协作物理层安全技术，进一步扩大网络的安全覆盖范围、提升可达安全速率。上述研究成果将为异构密集网络的安全部署提供理论指导，为下一代可信移动通信的设计和标准制定提供理论基础和技术支撑。

中文关键词： 异构密集网络；安全容量；协作；随机几何理论

英文摘要： With the rapid increasing of wireless data traffic, the ultra dense heterogeneous deployment, merging wide coverage and hot-spots, will be an important feature in next generation mobile communication network, which will result in severe interference among users. From the viewpoint of information theory, interference signals may be utilized by illegitimate users, incurring information leakage and then the security problems. This project aims to research the security modeling and secure transmission technologies in ultra dense heterogeneous networks (HetNets) from the perspective of physical layer security. With respect to security modeling of ultra dense HetNets, the secrecy capacity model will be studied based on stochastic geometry, which can characterize the diversity of base stations, the randomness of legitimate users and eavesdroppers, the statistics of intra-tier and inter-tier interference. Moreover, secrecy outage probability and secrecy capacity will be formulated based on the model. The random matrix theory will be applied to study full-cooperation physical layer security technology, to further extend the secure coverage and improve the achievable secrecy rate. These above achievements will provide a theoretical guideline for the secure deployment of the ultra dense HetNets, and can also provide theoretical foundations and technology supports for the design and standardization of the next generation reliable mobile communication.

英文关键词： Dense Heterogenous Network;Secrecy Capacity;Cooperation;Stochastic Geometry Theory