| 摘要 |
PROBLEM TO BE SOLVED: To enable a network which is adapted to a more practical use, to be managed by confirming the presence or the absence of the connection between a control station and a terminal equipment in a period of a time to the extent of determining connection-off state through person's sensation. SOLUTION: As a method for confirming the connection of the control station and the transmitter in a personal-area network, a connection confirming period (connection cycle) having a variable length at each transmitter is provided; when the period arrives, a radio communication system comprising a method for each transmitter to transmit the connection confirmation to the control station is provided and. The transmitter is used for the system.
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