SMS (Short Message Service) has achieved huge success in the wireless world. Billions of SMS messages are sent every day. SMS is now a major revenue generator for wireless carriers. A lot of innovative applications are now built on top of the SMS te
The PNX4908 low-cost GSM/GPRS/E-GPRS solution is built on NXP's proven single-chip architecture and world-class RF performance from the Aero transceiver core.
GSM和GPRS信令详解 ABIS BTS BSC (PCU) Gb A Gs SGSN Gr HLR VLR MSC MAP-D MAP-C MAP-E Gd Gc Gn Gi Gn Gp GGSN GGSN GGSN PDN PLMN EIR GPRS SM-SC SMS-GMSC SMS-IWMSC PSTN Um
GPRS（General Packet Radio Service，通用分组无线业务）是在现有的GSM移动通信系统基础之上发展起来的一种移动分组数据业务。GPRS通过在GSM数字移动通信网络中引入分组交换功能实体，以支持采用分组方式进行的数据传输。GPRS系统可以看作是对原有的GSM电路交换系统进行的业务扩充，以满足用户利用移动终端接入Internet或其它分组数据网络的需求。 以GSM、CDMA为主的数字蜂窝移动通信和以Internet为主的分组数据通信是目前信息领域增长最为迅猛的两大产业，
