Additional Units for SenML
draft-ietf-core-senml-more-units-00

Document Type Active Internet-Draft (core WG)
Last updated 2019-09-02
Replaces draft-bormann-senml-more-units
Stream IETF
Intended RFC status (None)
Formats plain text pdf html bibtex
Stream WG state WG Document
Document shepherd No shepherd assigned
IESG IESG state I-D Exists
Consensus Boilerplate Unknown
Telechat date
Responsible AD (None)
Send notices to (None)
Network Working Group                                         C. Bormann
Internet-Draft                                   Universitaet Bremen TZI
Intended status: Standards Track                      September 02, 2019
Expires: March 5, 2020

                       Additional Units for SenML
                  draft-ietf-core-senml-more-units-00

Abstract

   The Sensor Measurement Lists (SenML) media type supports the
   indication of units for a quantity represented.  This short document
   registers a number of additional unit names in the IANA registry for
   Units in SenML.  It also defines a registry for secondary units that
   cannot be in SenML's main registry as they are derived by linear
   transformation from units already in that registry.

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
   Task Force (IETF).  Note that other groups may also distribute
   working documents as Internet-Drafts.  The list of current Internet-
   Drafts is at https://datatracker.ietf.org/drafts/current/.

   Internet-Drafts are draft documents valid for a maximum of six months
   and may be updated, replaced, or obsoleted by other documents at any
   time.  It is inappropriate to use Internet-Drafts as reference
   material or to cite them other than as "work in progress."

   This Internet-Draft will expire on March 5, 2020.

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
   Provisions Relating to IETF Documents
   (https://trustee.ietf.org/license-info) in effect on the date of
   publication of this document.  Please review these documents
   carefully, as they describe your rights and restrictions with respect
   to this document.  Code Components extracted from this document must
   include Simplified BSD License text as described in Section 4.e of

Bormann                   Expires March 5, 2020                 [Page 1]
Internet-Draft         Additional Units for SenML         September 2019

   the Trust Legal Provisions and are provided without warranty as
   described in the Simplified BSD License.

Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   2
   2.  New Units . . . . . . . . . . . . . . . . . . . . . . . . . .   2
   3.  Rationale . . . . . . . . . . . . . . . . . . . . . . . . . .   3
   4.  New Registry  . . . . . . . . . . . . . . . . . . . . . . . .   4
   5.  Security Considerations . . . . . . . . . . . . . . . . . . .   6
   6.  IANA Considerations . . . . . . . . . . . . . . . . . . . . .   6
   Acknowledgements  . . . . . . . . . . . . . . . . . . . . . . . .   6
   8.  References  . . . . . . . . . . . . . . . . . . . . . . . . .   6
     8.1.  Normative References  . . . . . . . . . . . . . . . . . .   6
     8.2.  Informative References  . . . . . . . . . . . . . . . . .   7
   Author's Address  . . . . . . . . . . . . . . . . . . . . . . . .   7

1.  Introduction

   The Sensor Measurement Lists (SenML, [RFC8428]) media type supports
   the indication of a unit, using the SenML field "u", for the quantity
   given as a data value in a SenML record.  For this purpose, SenML
   defines an IANA registry of defined Unit names and their meanings.

   This short document registers a number of additional units in the
   IANA registry for Units in SenML that appear to be necessary for
   further adopting SenML in other Standards Development Organizations
   (SDOs).

   The key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT",
   "SHOULD", "SHOULD NOT", "RECOMMENDED", "NOT RECOMMENDED", "MAY", and
   "OPTIONAL" in this document are to be interpreted as described in
   BCP 14 [RFC2119] [RFC8174] when, and only when, they appear in all
   capitals, as shown here.

2.  New Units

   IANA is requested to assign new units in the "SenML Units"
   subregistry of the SenML registry [IANA.senml] (as defined in
   [RFC8428]):

Bormann                   Expires March 5, 2020                 [Page 2]
Internet-Draft         Additional Units for SenML         September 2019

   +--------+--------------------------------------+-------+-----------+
   | Symbol | Description                          | Type  | Reference |
   +--------+--------------------------------------+-------+-----------+
   | B      | Byte (information content)           | float | RFCthis   |
   |        |                                      |       |           |
   | VA     | volt-ampere (Apparent Power)         | float | RFCthis   |
   |        |                                      |       |           |
   | var    | volt-ampere reactive (Reactive       | float | RFCthis   |
   |        | Power)                               |       |           |
   |        |                                      |       |           |
Show full document text