| 摘要 |
<p>PURPOSE: To realize an environment where network communication is attained by plural groups at different radio channels simultaneously. CONSTITUTION: A host terminal sends a transfer packet subjected to diffusion processing by a selected code (S11). New membership terminal equipment applies inverse diffusion to a received packet by a full diffusion code prepared in the system (S12). A signal level after inverse diffusion is received by a computer main body, signal levels are compared (S13) and a code with a highest level is recognized to be a selection code in the group (S14). A diffusion signal generator is controlled so as to supply the selection code to a transceiver. In this case, since a signal level of a transfer packet after inverse diffusion is a problem, optional data are enough for the packet. However, the new membership terminal equipment applies inverse diffusion to the transfer packet signal by using a full diffusion code prepared in the system, the signal level after the inverse diffusion processing is received by the computer main body and the signal is kept to be sent for a time enough to compare signal levels.</p> |
