| 摘要 |
PROBLEM TO BE SOLVED: To continue provision of service without increasing the cost and without requiring complicated setting on the sensor side, even when a gateway device for transmitting data to a data management server fails, in a data collection system.SOLUTION: In a neighbor information management server 2, the identification information of a sensor node 7c, for example, and the identification information of a gateway device 5b other than a gateway device 5a connected are managed, in association, by the gateway device 5b as a proxy gateway device. Upon occurrence of failure in the gateway device 5a connected, connection is controlled to switch the connection destination of the sensor node 7c to the gateway device 5b as a proxy gateway device. |
