IoT Semantic Functionality Description
draft-robles-t2trg-functionalitydescription-00

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T2T Research Group                                             M. Robles
Internet-Draft                                                     Aalto
Intended status: Informational                             B. Silverajan
Expires: September 27, 2019                                          TAU
                                                          March 26, 2019

                 IoT Semantic Functionality Description
             draft-robles-t2trg-functionalitydescription-00

Abstract

   This document defines firstly functionality levels for IoT devices
   that describe the device capabilities at the granularity of devices,
   objects and resources.  It additionally presents a metric to measure
   the functional similarity between the manageable properties of any
   two IoT devices, called Functionality Distance (FD), which is defined
   as the indication of the extent to which one device can be
   substituted for the other.

Status of This Memo

   This Internet-Draft is submitted in full conformance with the
   provisions of BCP 78 and BCP 79.

   Internet-Drafts are working documents of the Internet Engineering
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   This Internet-Draft will expire on September 27, 2019.

Copyright Notice

   Copyright (c) 2019 IETF Trust and the persons identified as the
   document authors.  All rights reserved.

   This document is subject to BCP 78 and the IETF Trust's Legal
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   (https://trustee.ietf.org/license-info) in effect on the date of
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   include Simplified BSD License text as described in Section 4.e of
   the Trust Legal Provisions and are provided without warranty as
   described in the Simplified BSD License.

Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   2
   2.  Functionality Levels  . . . . . . . . . . . . . . . . . . . .   3
   3.  Use cases . . . . . . . . . . . . . . . . . . . . . . . . . .   4
   4.  Functionality Distance  . . . . . . . . . . . . . . . . . . .   5
     4.1.  LwM2M Resource Semantic Distance (LwRSD)  . . . . . . . .   7
     4.2.  Web of Things Semantic Functionality Distance(WoTSFD) . .   7
   5.  Future Work . . . . . . . . . . . . . . . . . . . . . . . . .   7
   6.  IANA Considerations . . . . . . . . . . . . . . . . . . . . .   7
   7.  Security Considerations . . . . . . . . . . . . . . . . . . .   7
   8.  Acknowledgments . . . . . . . . . . . . . . . . . . . . . . .   7
   9.  Informative References  . . . . . . . . . . . . . . . . . . .   7
   Authors' Addresses  . . . . . . . . . . . . . . . . . . . . . . .   8

1.  Introduction

   Internet of Things (IoT) involves the interconnection of a variety of
   heterogeneous devices.  Managing these diverse sets of devices is
   however extremely challenging.  In certain usage scenarios, it is
   essential to identify the IoT devices that have semantically similar
   properties as a group and control them with a single management
   command, so that they can substitute for each other in case any of
   them fails.  IoT devices may be employed by the device owner in
   operational contexts or usage scenarios that were not originally
   envisioned at production time by the device vendor.

   This document defines firstly functionality levels for IoT devices
   that describe the device capabilities at the granularity of devices,
   objects and resources.  It additionally presents a metric to measure
   the functional similarity between the manageable properties of any
   two IoT devices, called Functionality Distance (FD).  FD calculates a
   specific distance between the two devices, with the said distance
   being an indication of the extent to which one device can be
   substituted for the other.  In experimental evaluations [LwRSD], the
   results show that this mechanism successfully uncovers similarities
   between resources that are not that straightforward at first glance.
   For example, network connected TVs, smart speakers and light-bulbs
   can be used as emergency warning systems in a building.

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