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Unleashing the potential of the Internet of Things 5

USN applications
Open application interface
Open application interface processing

Basic Advanced
functions functions

Query processing Service discovery

Sensor network Sensor data mining
metadata directory processing Security USN
service service middleware
Application- Context-aware
independent data rule processing
filtering

Sensor network
management Event processing
Sensor network common interface
processing
Sensor network common interface
Sensor networks Y.2026(12)_FII.1

Figure II.1 – Functional model of USN middleware ([b-ITU-T F.744])

Bibliography

[b-ITU-T F.744] Recommendation ITU-T F.744 (2009), Service description and requirements
for ubiquitous sensor network middleware.

Rec. ITU-T Y.4403/Y.2026 (07/2012) 551