| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a sensor network software delivery system, a wireless terminal, and a software delivery method which, by minimizing a time in which the software of each terminal within a sensor network differs, delivers update software without increasing the communication traffic of a data gathering device.SOLUTION: The version information of software is stored inside a beacon, and the stored version information is transmitted on a fixed cycle. A data transmission-side terminal having received the beacon compares the version information stored inside the beacon and the version information of the software being used by the terminal itself, and transmits, upon detecting the necessity of updating the software version, an update software delivery request to a data reception-side terminal after transmitting DATA. The data reception-side terminal transmits update software (1) through (N) to the data transmission-side terminal after transmitting DACK. The data transmission-side terminal can thereby receive the delivery of updated software from the data reception-side terminal.</p> |
