Page 536 - Unleashing the potenti al of the Internet of Things

5 Unleashing the potential of the Internet of Things

The SPARQL query function performs the functions to simultaneously handle many SPARQL
queries created by the query analyser function, to produce the outcome of each query from the
Semantic USN repository FE and to deliver these to the query analyser function.

The URI request query function performs the functions to send URI request queries to the Resource
management FE, receive the URIs of corresponding USN resources from the Resource management
FE and deliver them to the query analyser function.

8.2.7 Adaptation FE
Adaptation FE provides the functions to handle the protocols and messages for setting up
connections with USN middleware and delivering queries and commands. It works as an interface
between the open USN service platform and heterogeneous USN middleware for processing the
corresponding protocols and messages for the respective USN middleware.

It supports the message translation function to translate the data from/to heterogeneous USN
middleware according to proper message specifications to deal with in the open USN service
platform and the respective USN middleware. It also provides the message routing function to
deliver the translated data to corresponding FEs (Semantic USN repository FE, Resource
management FE and Semantic query FE) of the open USN service platform in order to process
requests.

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