3GPP LTE系统安全性研究

摘要

长期演进(LTE)系统代表了UMTS标准的最新发展方向,作为一种纯分组系统,它具有全新的无线接口和体系结构,其频谱效率是HSDPA/HSUPA的2倍.本文分析了LTE系统安全的主要内容,提出了LTE用户安全的体系结构,描述了IP网络的NDS体系结构,介绍了隧道模式下的ESP保护原理.%Long Term Evolution (LTE) system represents the very latest evolution of the UMTS standard. As a packet-only system, LTE has a brand new radio interface and an evolved architecture for both the access and the core network parts, whose spectrum efficiency is twice as large as HSDPA/HSUPA. This paper analyzes the main content of LTE system security, proposes the user security architecture of LTE system, describes the NDS architecture for IP-based networks and introduces the ESP protection in tunnel mode.