新一代超密集异构蜂窝无线网络研究

近年来，随着移动互联网的蓬勃发展和智能终端的快速普及，对无缝网络覆盖和高速数据传输要求日趋增强，超密集异构蜂窝无线网络通过减小小区半径，增加低功率节点数量进行超密集组网，提高无线资源利用率和频谱效率，因而引起了国内外研究学者的广泛关注。然而，超密集异构蜂窝无线网络中愈发密集的网络部署也带来了各种严峻的问题，包括超密集异构蜂窝无线网络中的系统干扰问题、无线信息的安全传输问题、以及网络运营的能量供给问题等。为此，本文首先简单介绍了超密集异构蜂窝无线网络架构，接着从干扰管理、物理层安全和能量效率等方面，深入分析了超密集异构蜂窝无线网络中的关键技术和当前挑战，最后，进一步展望了超密集异构蜂窝无线网络的未来发展。 

Research on New Generation of Ultra-Dense Heterogeneous Cellular Wireless Networks

Recently,with the booming development of the mobile Internet and the rapid popularization of smart terminals,the requirements for seamless network coverage and high-speed data transmission are increasing.Ultra-dense heterogeneous cellular wireless networks improve wireless resource utilization and spectrum efficiency through reducing the radius of cells and increasing the number of low-power nodes for grouping ultra-dense networks,which attracts widespread attention from international researchers.However,the increasingly dense network deployment in ultra-dense heterogeneous cellular wireless networks also brings a variety of serious problems,including system interference,the secure transmission of wireless information,and the energy supply problem of network operations.To this end,the ultra-dense heterogeneous cellular wireless network architecture is firstly introduced.Then some key technologies and current challenges in ultra-dense heterogeneous cellular wireless networks such as interference management,physical-layer security,and energy efficiency are analyzed.Finally,the future development of ultra-dense heterogeneous cellular wireless networks is discussed.