| 摘要 |
<p>A wireless digital communication system (figure 4), and in particular a microcellular packet communication system, employing frequency hopping spread spectrum techniques using channels for receiving and transmitting information to different elements of the system. An exemplar embodiment of the present invention provides a method for transferring information between a network device (310 and 312) and a user system (332, 334 amd 336). The user system receives information over a downlink channel (416, 412 and BAD D) of a first plurality of frequency channels from the network device and the user system transmits information over a uplink channel (416, 414 and BAND U) of a second plurality of frequency hopping channels to the network device. This has the function of separating the communications channel into non-interfering bands between the user system and the network device. Another embodiment provides for using a channel mask at either the network device or the user system or both to perform band-splitting, as well as backward compatibility with an existing frequency hopping system that does not use this method.</p> |
