Patent ID: 6920128
Filing Date: 2005-07-19
Classification: H04B

Abstract:
1. A packet-switched data communication system having a control station and a plurality of remote terminals that communicate 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 carriers forming 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 carrier forming a control channel carrying control information pertaining to said data channels; and means for simultaneously transmitting said carriers carrying said data packets and said control channel to said remote terminals as a radio frequency signal; and each of said terminals comprising a receiver for receiving said radio frequency signal; an analog-to-digital converter for digitizing said received signal; a buffer for storing said digitized received signal; and a processing means for continually monitoring the contents of said buffer to extract control information from said control channel, and said processing means processing said stored 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 packet data as destined for said terminal.