蜂窝数字分组数据（CDPD）系统是基于模拟蜂窝电话网的无线分组数据通信系统。
The cellular digital packet data(CDPD) system is a wireless packet communication system based on analog cellular telephone networks.
较详细地描述新一代以数据为重心、分组为基本的核心网轮廓并描绘了第三代无线蜂窝网和移动卫星系统的前景。
The paper attempts in detail to describe the outlook of data centric, packet based core network for national fixed telecommunications…
较详细地描述新一代以数据为重心、分组为基本的核心网轮廓并描绘了第三代无线蜂窝网和移动卫星系统的前景。
The paper attempts in detail to describe the outlook of data centric, packet based core network for national fixed telecommunications…
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