基于开源SDR的LTE系统对比研究与实现

Comparative Research and Implementation of LTE System based on Open-Source SDR

作为3GPP标准化草案的主要演进方向——LTE,无线4G网络技术已大规模商用。传统的LTE系统设计采用昂贵的嵌入式设备和射频前端方案,但随着技术发展演进带来了硬件设备更新换代、维护困难等问题。因此,简要介绍OpenLTE、srsLTE和OpenAirInterface(OAI)三个开源项目,并在Ubuntu17.04系统上利用开源项目搭建SDR LTE系统,通过初步学习、实践,掌握了各开源软件的优劣。这些开源项目在5G、NB-IoT中有相关布局,这将为挖掘无线网络漏洞和未来网络安全夯实基础。

As the main evolution direction of the 3 GPP standardized draft—LTE, wireless 4 G network technology is now commercially available on a large scale. The traditional design of LTE system usually adopts expensive embedded devices and RF front-end solutions, and however the development and evolution of technology brings problems such as upgrading and maintenance of hardware equipment and so on. Therefore, three open-source projects of OpenLTE, srsLTE and OpenAirInterface（OAI） are briefly introduced, and in addition, the SDR LTE system is built up on the Ubuntu17.04 system by using open-source projects. Through initial study and practice, the advantages and disadvantages of each open-source software are mastered. These open-source projects have related layouts in 5 G and NB-IoT, and this would lay a good foundation for mining wireless network vulnerabilities and future network security.