Presently, Mobile Communication Company's GPRS network that based on the 2.5 G can supply packet radio service and low cost service of wireless transmission.
目前，移动公司建成的基于2.5代移动通信gprs网络能够提供端到端的无线分组交换数据业务，提供低成本的数据无线传输业务。
We set up a system for packet transmission and transmission control, and propose a layered retransmission error control mechanism based on immediate feedback.
在立即反馈的基础上提出了一种基于分层重传的差错控制机制。
The selection is based on measures of the radio link qualities made during transmission of the relevant packet or made prior to its transmission.
选择是基于在相关分组传输期间进行的或在其传输之前进行的无线电链路质量的度量。
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