Page 552 - Unleashing the potenti al of the Internet of Things

5 Unleashing the potential of the Internet of Things

6.2 Functional architecture model

Figure 1 depicts the overall diagram of USN architecture, which uses NGN as a backbone network.

USN applications
Sensor networks Backbone Network
and services
End-user
Use of service
NGN
USN service
provider
Observation data (sensor data)

Use of service
USN service
End-user
provider

Figure 1 – Overall USN architecture

The sensor networks gather information about their physical surroundings and deliver this
information to USN service providers through NGN. The USN service providers create USN
services using this information and provide them to USN end-users via NGN. The USN end-users
utilize USN services through NGN.

As a backbone network, NGN provides the capabilities for the support of USN applications and
services in the transport stratum functions, the service stratum functions, the management functions
and the end-user functions.

Figure 2 shows the overall functional architecture model of the NGN to support USN applications
and services. More specifically, the figure shows the functions required for the support of USN
applications and services. Appendix I describes requirements for the support of USN applications
and services in NGN and allocates the corresponding functions of NGN to satisfy the requirements.

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