Patent ID: 6522638
Filing Date: 2003-02-18
Classification: H04B

Abstract:
A packet data communication system having a control station and a plurality of remote terminals that communicate on demand with said control station over a wireless link,said control station comprising: a data port for receiving data packets destined for said terminals; means for generating a plurality of data channels for carrying said data packets; means for assigning said data packets destined for a particular terminal to one or more of said data channels; means for generating a control channel carrying control information required to permit data to be extracted from said data channels; and means for transmitting said data channels and said control channel simultaneously to said remote terminals as an aggregate signal; and each of said terminals comprising a receiver for receiving said aggregate signal; an analog-to-digital converter for digitizing said aggregate signal; a buffer for storing said aggregate signal containing said data channels and said control channel; a processor for continually processing said stored aggregate signal to read said control channel stored in said buffer and extract said control information therefrom without reading said one or more data channels; and said processor further processing said stored aggregate signal to extract said packet data destined for said terminal from one or more of said data channels in response to control information received on said control channel identifying said terminal as a destination for said packet data.