Sensor network system, base station, and method to forward measured data

A sensor network system comprising:

• a gateway connected to a plurality of sensor nodes via a network;
• and
• a server connected to the gateway via a network,
• wherein the sensor node includes a communication unit that transmits at least one measured value sensed by at least one sensor and an identifier of the sensor node as measured data,
• wherein the gateway includes:
• a first communication controller that receives the measured data from the sensor node;
• and
• a second communication controller that transmits the received measured data to the server,
• wherein the server has a database that stores the measured data received from the network,
• wherein there are provided a conversion definition information manager that accepts, holds and manages conversion definition information input from the server, a user terminal or another communication unit, a conversion definition information selector that selects conversion definition information corresponding to an identifier included in the measured data out of conversion definition information held by the conversion definition information manager and a conversion processor that applies a format conversion process set in the selected conversion definition information to the measured data between the gateway and the server or to the gateway or to the server, and
• wherein the database stores the converted measured data.