Cellular Digital packet data (CDPD) network is one of the mobile packet data technologies, with rather lower cost of network laying, operation and lower service fees and worthy of popularization.
蜂窝数字分组数据(CDPD)网是一种移动分组数据技术，具有较低的建网、运营成本和业务费用，因此具有广泛推广的价值。
In digital trunked system, the delay performance of packet data service is greatly affected by the design of system's parameters and the network load.
数字集群系统的参数设计和网络负荷对分组数据业务的延迟具有很大的影响。
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