| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To solve a problem of a conventional system that in a radio communication network system between a plurality of mobile stations having a variable directional antenna, when its network is initially constructed, if there are multiple slave stations in the same beam range of a single master station, each slave station changes transmission timing of each slave station in order to avoid interference among reception responses returned from each slave station to the master station at the same time, but there are many cases that there is one slave station in the same beam range, and deviation of transmission timing causes dead time and lowers throughput. <P>SOLUTION: After each slave station 3 receives a beacon signal from a master station 2, firstly, it immediately transmits a reception response signal to the master station 2 without providing a back-off time, and determines that interference has occurred if it did not receive an ACK signal from the master station 2. Next, when the slave station 3 re-transmits the reception response signal to the master station 2, it responds providing a random back-off time. Thus, a radio communication network can be constructed at high speed. <P>COPYRIGHT: (C)2012,JPO&INPIT</p> |
