| 摘要 |
PROBLEM TO BE SOLVED: To provide a communication system in which a recipient terminal for receiving information can receive all of the information certainly, even if the information is transmitted simultaneously from a plurality of sensor terminals, and which can suppress power consumption of the sensor terminals as much as possible. SOLUTION: A plurality of sensor terminals 3 are configured to be operable in radio communication to the network terminal 2 of the communication system 1. While the network terminal 2 comprises a plurality of radio receiving units 21 for communicating in radio with a frequency different from each other, the sensor terminals 3 do not comprise a radio receiving unit and they are configured to transmit information only to the network terminal 2. In addition, transmit frequency data of a radio transmitting unit 34 in the sensor terminals 3 is transmitted in radio from a mobile terminal 4 to the network terminal 2 so that each of sensor terminals 3 are associated with each of radio receiving units 21. Consequently, radio communications are conducted between the associated sensor terminal 3 and the associated radio receiving units 21. COPYRIGHT: (C)2005,JPO&NCIPI
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