The principle of work, technical characteristics, advantages and disadvantages of General Packet Radio Service(GPRS) technology and the application of GPRS to urban gas SCADA system are described.

论述了通用分组无线服务（GPRS）技术的工作原理、技术特点、优势、不足及其在城市燃气SCADA系统中的应用。

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The research of HSDPA is valuable as HSDPA is a typical wireless packet access system. However, the Radio Resource Management is under development.

HSDPA作为一个典型的无线分组接入系统，具有重要的研究价值，但目前HSDPA的无线资源管理仍未成熟。

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The cellular digital packet data (CDPD) is a system which borrows idle radio channels from the existing cellular mobile telephone networks for packet data transmission.

蜂窝数字分组数据(CDPD)是利用现有的模拟蜂窝电话网来传输数据的一种新技术。

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He said Dell's customers are telling the company they prefer the idea of mobile Internet access via wireless notebook computers, using technology such as the Bluetooth and 802.11 standards as well as emerging wireless telecommunications technology such as GPRS (General Packet Radio Service), wideband CDMA (Code Division Multiple Access) and UMTS (Universal Mobile Telecommunications System).

CNN: Dell: PCs, servers, storage to remain growth areas