在一种可以用可变速率传输的数据通信系统中，高速率分组数据传输改进了正向链路的应用，并降低了传输延迟。
In a data communication system capable of variable rate transmission, high rate packet data transmission improves utilization of the forward link and decreases the transmission delay.
呼之欲出的第三代(3G)移动通信不仅能提供现有的各种移动电话业务，还能提供高速率的宽带视频业务，支持高质量的话音、分组数据业务以及实时的视频传输。
The incoming 3g could not only support the existing mobile operations, but also broad band video operations high quality voice packet data transmission and real time video communication.
高速下行分组接入(HSDPA)作为WCDMA的增强技术，大大提高了下行数据速率。
As an enhanced technology of WCDMA, HSDPA has greatly increased the transmission rate of downstream data.
高速下行分组接入(HSDPA)作为WCDMA的增强技术，大大提高了下行数据速率。
As an enhanced technology of WCDMA, HSDPA has greatly increased the transmission rate of downstream data.
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