分析了几个典型的宽带无线通信系统WCDMA、LTE和WiMAX所面临的安全威胁和安全需要，探讨了WCDMA、LTE和WiMAX网络安全技术机制，最后介绍了 WiMAX与3GPP互通的安全技术发展。-This paper analyses the security threats and requirements of several typical broadband wireless communication systems: WCDMA, LTE and WiMAX, and discusses the security schemes of WCDMA, LTE and WiMAX network. Finally it gives the security scheme development, in WiMAX and 3GPP.