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Unleashing the potential of the Internet of Things 3

Sensor network
Monitoring application

ID: 2009.284.84
ERROR: invalid sensing value
Alarming Action: reset
Report USN Report
middleware

Report Report Reset
Gateway Gateway Gateway Gateway

ID: 2007.375.345 ID: 2009.285.821 ID: 2008.745.12 ID: 2009.284.84

Sensor node F.744(09)_F03.doc

Figure 3 – Use case of a sensor network monitoring service

The sensor network should be associated with the appropriate authorization mechanism because
sensor networks are shared by different applications. Therefore, only authorized applications or
administrators should be permitted to control the sensor networks. The sensor network monitoring
service operates as follows:

Step 1: A sensor network connects to USN middleware. The USN middleware is required to
authenticate the connecting sensor network.
Step 2: A sensor network monitoring application connects to the USN middleware to monitor
the sensor networks. The USN middleware is required to authenticate the connecting
application.

Step 3: A sensor network monitoring application may monitor all the sensor networks that are
connected to USN middleware at the same time, or may monitor specific sensor
networks. A sensor network monitoring application may refer to the sensor network
metadata directory service to determine target sensor networks.

Step 4: A sensor network monitoring application requests USN middleware to collect
monitoring information from target sensor networks.

Step 5: USN middleware sends monitoring requests to the sensor networks for collecting
monitoring information.
Step 6: Sensor networks send current information to USN middleware for monitoring.

Step 7: USN middleware collects monitoring information from the sensor networks and sends
them to a sensor network monitoring application.

Step 8: A sensor network monitoring application displays the current status of target sensor
networks on the screen.

Rec. ITU-T Y.4104/F.744 (12/2009) 155