| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a radio communication system which reduces transmission delay caused by relay by effectively utilizing frequency resources while sharing frequencies with a plurality of nodes. <P>SOLUTION: A radio communication system transmitting data from a transmission source node 1A to a transmission destination node 1C through a relay node 1B comprises: the transmission source node 1A which includes a frequency scan part 13 detecting usage state of each frequency, a transmission frequency determination part 13 determining a transmission frequency based on the usage state of each frequency, a frequency information transmission part 13 transmitting the determined transmission frequency to the relay node, and a data transmission part 13; and the relay node 1B which includes the frequency scan part 13 detecting the usage state of each frequency, a determination part 13 determining a relay frequency based on frequency information and the usage state of each frequency, a frequency information transmission part 13 transmitting the relay frequency to the transmission destination node, and a data transmission part 13 performing relay transmission by using the relay frequency. <P>COPYRIGHT: (C)2012,JPO&INPIT |
