Page 869 - 2015 Security in Telecommunications and Information Technology

Unleashing the potential of the Internet of Things 6

5 Conventions

In this Recommendation:
The keywords "is required to" indicate a requirement which must be strictly followed and from
which no deviation is permitted if conformance to this document is to be claimed.
The keywords "is recommended" indicate a requirement which is recommended but which is not
absolutely required. Thus this requirement need not be present to claim conformance.
The keywords "can optionally" and "may" indicate an optional requirement which is permissible,
without implying any sense of being recommended. These terms are not intended to imply that the
vendor's implementation must provide the option and the feature can be optionally enabled by the
network operator/service provider. Rather, it means the vendor may optionally provide the feature
and still claim conformance with the specification.

6 Basis of IoT application support models

6.1 Concepts and purpose of IoT application support models
The IoT application support models refer to different sets of the IoT capabilities, including their
relations, which can support IoT applications with some characteristic requirements, such as
application adaptability, reliability and manageability.

NOTE 1 – The application characteristic requirements, as named in this Recommendation, are part of the
common requirements as specified in [ITU-T Y.4100]. The application characteristic requirements refer to
requirements related with some characteristics of IoT applications, such as the adaptability of M2M
applications, the reliability of e-health applications and the configurability of smart city applications.
The IoT application support models are used to guide the design, implementation and deployment
of the IoT capabilities to fulfil application characteristic requirements, in order to establish a
common service platform [ITU-T Y.4401] for support of IoT applications across different
application domains.
NOTE 2 – The service platform established by implementing and deploying capabilities of the IoT
application support models may be used to shorten the time period and reduce the cost of developing the IoT
applications with characteristic requirements, such as configurable, adaptable, or reliable requirements, by
making usage of the capabilities of the service platform. Appendix I describes some use cases from the smart
home environment showing examples about the usage of the IoT application support models.
In particular, the purposes of the IoT application support models are as follows: the first one is to
specify groups of IoT capabilities in order to facilitate the selection of IoT capabilities
[ITU-T Y.4401] for the support of IoT applications with some characteristic requirements; the
second one is to derive, based on the selected IoT capabilities, other IoT capabilities, not explicitly
identified in [ITU-T Y.4401], as necessary in order to facilitate the design, implementation and
deployment of the IoT capabilities for support of IoT applications with some characteristic
requirements.

In this Recommendation, the framework of the IoT application support models and three specific
application support models: the adaptable application support model, the reliable application
support model and the configurable application support model, are specified. Clause 6.2 provides
the rationale for this classification of the IoT application support models.
NOTE 3 –This Recommendation specifies only three application support models. Because of different IoT
application characteristic requirements, different IoT application support models could be specified. Other
application support models are for further consideration with respect to other relevant characteristic
requirements of IoT applications.

Rec. ITU-T Y.4552/Y.2078 (02/2016) 855