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Unleashing the potential of the Internet of Things 5

Appendix I

Information flow in the open USN service framework

(This appendix does not form an integral part of this Recommendation.)

This appendix describes the information flow related to the operation of the open USN service
framework that includes USN resource registration, sensed data/semantic data access from
Semantic USN repository FE and USN resources.

I.1 USN resource registration
Figure I.1 shows the information flow describing how to register a USN resource into the open
USN service platform.

Application

Open USN service platform
Application support FE

Semantic query FE

Semantic USN
LOD linking repository FE
FE
Semantic data Resource
repository
management
FE
Semantic 4
inference FE Sensed data
repository

3
5
Adaptation FE
...
Adaptation FE 1 Adaptation FE 2 Adaptation FE n

2 6

...
USN middleware 1 USN middleware 2 USN middleware n
1
Sensor or sensor
network

Figure I.1 – Information flow of USN resource registration

(1) The USN resource requests the USN middleware to register its information to the open
USN service platform.

(2) The USN middleware sends a request to the open USN service platform through the
Adaptation FE.

Rec. ITU-T Y.4402/F.747.4 (12/2013) 523