GPRS网络结构和网元 GPRS网络接口和协议 GPRS地址、编号和标识 GPRS移动性管理 GPRS会话管理 -GPRS network structure and network element GPRS network interface and protocol GPRS address, number and logo GPRS Mobility Management GPRS session management

北电写的关于第四代移动通信关键技术的综述性论文，外文资料，概括性强-Nortel was the fourth generation of mobile communications on key technology is summarized in papers, foreign materials, general strong