Page 538 - Unleashing the potenti al of the Internet of Things

5 Unleashing the potential of the Internet of Things

(3) The Adaptation FE sends the request message to the Resource management FE.
(4) The Resource management FE issues the URI of the USN resource and requests the
Semantic USN repository FE to store the URI and metadata of the USN resource.
(5) The Resource management FE returns the result of the registration to the Adaptation FE.

(6) The Adaptation FE returns the result to the USN middleware.

I.2 Sensed data/semantic data access from Semantic USN repository FE
Figure I.2 shows the information flows describing how to access sensed data/semantic data stored in
the Semantic USN repository FE.

Application

2 11
Open USN service platform
Application support FE

3 10

Semantic query FE
8 9 4 7

Semantic USN
LOD linking repository FE
FE
Semantic data 5 Resource
repository management
FE
Semantic 6
inference FE Sensed data
repository

1
Adaptation FE

Adaptation FE 1 Adaptation FE 2 ... Adaptation FE n

USN middleware 1 USN middleware 2 ... USN middleware n

Sensor or sensor
network

Figure I.2 – Information flow of accessing sensed data/
semantic data from Semantic USN repository FE

(1) The sensed data via the USN middleware from USN resources are periodically or
continuously stored in the Semantic USN repository FE. The Semantic inference FE
converts sensed data into semantic data periodically or on-demand.

(2) The Application requests the sensed data/semantic data from the open USN service
platform through the Application support FE.

(3) The Application support FE sends a request message to the Semantic query FE.

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