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Unleashing the potential of the Internet of Things 5
I.2 Requirements supported by existing NGN capabilities
[ITU-T Y.2221] defines the following requirements to be supported by existing NGN capabilities.
Requirements Explanation
Open service environment: Service • It is recommended to support service composition and
composition and coordination coordination for creation of USN applications and services.
NOTE – From the viewpoint of USN applications and services,
NGN may be regarded as an intermediate network providing
connectivity, data delivery and management. Service
composition and coordination under OSE provides NGN service
composition and coordination, not USN applications and
services. USN service composition and coordination is provided
by other service providers than NGN.
Therefore this Recommendation does not take this requirement
into consideration.
Quality of service: Differentiated QoS • It is recommended to provide differentiated QoS and data
and data prioritization prioritization according to the specific USN service
requirements.
Connectivity • It is required to support connectivity between sensor
networks and infrastructure networks, regardless of the
sensor network type, i.e., IP-based or non-IP-based and using
various types of wired and/or wireless media connections.
This includes the case in IP-based sensor networks of a
single sensor node directly connected to the infrastructure
networks.
Location management • Location information of sensor networks is recommended to
be registered for USN applications and services. Registration
can be static or dynamic.
• Location information of an individual sensor node can be
optionally registered for USN applications and services when
the location information of a single sensor node is useful.
• Location information is recommended to be trustworthy,
hence location discovery and management is recommended
to be secure.
Mobility • It is required to support network mobility when a sensor
network moves across infrastructure networks.
• Infrastructure networks are required to support intra-sensor
network mobility and inter-sensor network mobility when
location information of a moving sensor node is required to
be traced.
Rec. ITU-T Y.4403/Y.2026 (07/2012) 547
