| 摘要 |
<P>PROBLEM TO BE SOLVED: To increase channel utilization efficiency for data transmission by reducing the exchange frequency of control packets necessary for channel estimation and intercell multiplexing. <P>SOLUTION: A radio base station AP refers to a table recording channel information, and if there are not any radio terminal stations having no or expired channel information in the table, weights antennas with the channel information recorded in the table as it is, without performing any channel estimation control, for transmitting data packets. If there are any radio terminal stations having channel information unrecorded or expired, on the other hand, the radio base station AP and such radio terminal stations perform channel estimation control before weighting antennas for transmitting data packets. <P>COPYRIGHT: (C)2012,JPO&INPIT |
