In the further CDMA cellularmobileradio system, an efficient resource allocate scheme for the downlink is necessary, since most of the traffic flow is from base station to mobiles.
The cellular digital packet data (CDPD) is a system which borrows idle radio channels from the existing cellularmobile 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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Ericsson has unveiled the first cellular phone headset, which connects to mobile phones via a Bluetooth technology-based wireless radio link instead of a cable.