GPRS、WCDMA、CDMA2000都属于可漫游移动用户的承载网络，都是在移动用户和远端数据网之间提供数据连接。本文将对作为一种移动数据业务承载网并且基于GSM的GPRS技术从协议栈的角度进行深入剖析。-GPRS, WCDMA, CDMA2000 are mobile users can roam the bearer network and mobile users in the remote data network to provide data connectivity between

GSM Protocol stack documentation (part 1)

GSM/GPRS/EDGE Access Stratum (GAS). The protocol stack is based on a dual mode stack (2G and 3G) which easily can be configure single or dual mode during compile time, without any additional code overhead. The Non-Access Stratum (NAS) contains the