LTE系统中Uu接口安全问题分析

Analysis on Uu interface Security in LTE system

随着移动通信设备的广泛普及,以及人们越来越高的业务需求,长期演进(Long Term Evolution,LTE)系统变得越来越受欢迎。LTE系统能够给移动用户带来非一般的体验:高数据速率、低时延、高频谱利用率和能量效率。人们普遍关注LTE系统带来的正面效应,而忽视了相关的安全问题。尽管LTE系统采取了完善的安全措施,但其仍然存在诸多漏洞。从LTE-Uu接口特点出发,着重描述了五大安全目标,并对应分析了可能面临的威胁。最后,对DDo S进行了简单介绍,并给出了仿真实例,进一步说明了Uu接口的安全问题。通过仿真结果分析可知,基于Uu接口的DDoS攻击增大了网络时延和丢包率。

With the popularization of mobile communication devices,in order to meet the higher traffic requirement,the Long Term Evolution（ LTE） system is becoming ever more popular. The LTE systems bring people non-ordinary experience,including high data rate,low latency,high spectrum efficiency and energy efficiency.People give more concern on the positive effects of LTE system,while ignoring the related security issues.Although LTE systems take a more comprehensive security measures,there are still much vulnerability.In view of LTE-Uu interface features,this paper describes in detail the five security goals,and analyzes the corresponding threats that may arise.Finally,DDo S attack is introduced in brief,the DDo S attack simulation instance is given,and the security of Uu interface is discussed further.The simulation results show that DDo S attack based on Un interface increases the network delay and packet loss rate.