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Results of field trials with wide-area ubiquitous network

For the “Internet of Things,” wireless devices are required that have small size, long life, and long range communication capability. One technology that meets these requirements is the wide-area ubiquitous network. This paper reports the field trials conducted over three years; services were remote reading / remote control of gas meters and bicycle management (location estimation / radio reachability). The test results confirm that the network can well support remote monitoring service.