| 摘要 |
PROBLEM TO BE SOLVED: To provide a technology for synchronizing a transmitting timing of a frame transmitted by each of all nodes in a plurality of networks connected through relay nodes. SOLUTION: At first, a main transmission/reception portion 10a of a relay node 3 becomes in a communication condition ("YES" at s120). After synchronizing with a transmitting timing of a frame transmitted by each node connected to a main network 2, a receiving route is changed so that a frame distributed within the main network may be received by each slave transmission/reception portion, during a period required for each node connected to a slave network 2 being in a communication condition (s150 to s200). COPYRIGHT: (C)2009,JPO&INPIT
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