DRAFT Web of Things Interest Group Charter
NOTE: This draft charter has been superseded.
The mission of the
Web of Things Interest Group
is to accelerate the development of open markets of
applications and services based upon the role of Web technologies for a
combination of the Internet of Things (IoT) with the Web of data.
||31 March 2016
||Proceedings are public
||Joerg Heuer, Siemens
Ricardo Morin, Intel
|Initial Team Contacts
(FTE %: 10)
|Dave Raggett <email@example.com>
|Usual Meeting Schedule
Face-to-face: Once Annually
The Internet of Things is currently beset by product silos. To unlock
the commercial potential there is a need for open ecosystems based upon
open standards. This includes standards for identification, discovery
and interoperation of services across platforms from different vendors,
and will involve the need for rich descriptions and shared data models,
as well as close attention to security, privacy and accessibility. Open
ecosystems will stimulate growth through the establishment of larger
markets for developers and lifting the burden for tailoring products to
vendor specific platforms.
This includes the potential for using scripting languages like
metadata, including Linked Data, and protocols such as HTTP and
direct access to IoT devices from the browser, in service platforms in
the cloud or at the network edge, and for device drivers in gateways
that use IoT protocols to access embeded / constrained devices, and web
protocols to expose them to service platforms.
Identity is important for devices, users, applications and services,
e.g. as part of end to end security and for trust management. Unlike
regular web applications, we can't assume that the user is present and
able to authenticate his or herself. Trust management will entail the
means to verify metadata, e.g. the provenance of data, the location of a
given sensor, and so forth. This is analogous to know your customer
requirements in the banking world.
Applications and services often need data at a higher level than the
raw data provided by sensors. Moreover, data needs to be interpreted in
the context of other sources of information. The same applies to control
systems whose actions need to be translated in context into actions on
lower level entities. The Web of Things needs to be able to model the
real world at different levels of abstraction, and to enable open
markets with free competition of services across these levels. The
things in the Web of Things can be considered as virtual representations
A consequence of this is that the "Things" in the Web of Things are not
limited to connected devices, but can also include things that are not
and cannot be connected such as people and places, and abstract ideas,
such as events (e.g. a concert), organizations, and time periods (e.g.
the 70s). Each thing can have one or more virtual representations
(avatars). Things can also have histories, e.g. for a car, recording the
sequence of previous owners. Avatars have identities, rich descriptions,
services, access control and data handling policies. Avatars have URIs
and are accessible via web technologies. Avatars make it easier to build
applications and services that combine information from different
sources and different levels of abstraction.
Note: this charter was drawn up as an outcome of the June 2014 W3C Workshop on
the Web of Things.
The Web of Things Interest Group is a forum for discussion of
requirements of Web technologies that enable the development of open
markets of products and services based upon tags, sensors and
actuators (the Internet of Things) and the Web of data. Such services
can be hosted at the network edge, e.g. in home hubs, or in the cloud
for increased scalability. By focusing on Web technologies for the
application and service layer that overlays the IoT devices and
technologies used to access them, W3C's work will complement work by
other standards development organizations that focus on the Internet
of Things. The aim is to identify opportunities for standards that
will enable apps and services to break out of product silos.
The forum is intended to include:
- organizations that commission such products and services,
- designers, and developers
- equipment manufacturers,
- tool and platform vendors,
- operators and other relevant participants in the value chain that
creates and operates such products and services.
It is intended that the forum provides a focus for participants from
a wide range of sectors including consumer electronics (e.g. wearables
and home automation), retail, manufacturing, construction, transport,
major utilities, healthcare, technology, network operators, service
creation companies and marketplace hosts.
The first step for the Interest Group will be to collect and publish
Web of Things use cases from these different sectors/domains and to
identify common elementary use cases and requirements. This is
essential for ensuring a shared understanding and will be a
prerequisite for splitting work up into task forces that can then
proceed in parallel. Some potential candidates for task forces
- Survey of existing practices and standards relevant to the Web of
- Identifying requirements for open markets of services for the Web
- Data modeling
- Unique identification of things, for example using URIs
- Registration of things and the services they provide
- Service descriptions and dependencies
- Coordination and synchronization
- Real-time control and cyber-physical systems
- Discovery and trust management
- Scripting: browsers, service platforms and gateways, including
APIs for IoT technologies
- Bridging the gap between the Web of Things and the IoT
- Relationship between app/service layer and network layer
- Provisioning and lifecycle management
- Gathering requirements and techniques relating to security,
privacy and accessibility for the Web of Things, e.g. strong
authentication and data handling policies, as well as ensuring that
services expose data in multiple formats as needed to enable
- Requirements and best practices for integrating the Web of data
- A study of scalability — how to support billions of users, and
what is needed to enable services to dynamically adapt to changes in
demand — what are the implications for standards?
- Investigating the potential role of social relationships between
people, places and things
- Analysis of requirements for industry initiatives like Industrie
4.0 and the Industrial
- Coordination and outreach for different sectors/domains, and an
identification of opportunities for shared data models, e.g.
searchable repositories like schema.org
- Collaborations with other standards development organizations
We expect that the Interest Group will choose several important
application sectors/domains to focus on, so we can ensure that our
open architecture has real applicability. We have not yet chosen these
domains, although manufacturing appears promising.
- Participation via mailing list subscription and postings from
people representing various stakeholder communities, including
developers, equipment manufacturers, browser vendors, operators and
- Members of the Interest Group join relevant Working Groups and
drive the development of work items;
- Constructive feedback on W3C deliverables posted for review on the
Things Interest Group mailing list.
- Production of stable documents addressing the work items listed in
the Deliverables section.
Out of Scope
The technical development of standards is not in the scope of the
Interest Group. Instead the Interest Group will recommend work items
for other groups.
The primary deliverables of the Web of Things Interest Group are IG
notes that identify requirements for existing and/or new technical
specifications, that would advance the group's mission.
In addition, the group will review and comment on documents generated
by the other W3C groups and may review documents coming from external
- Use Cases and Requirements for the Web of Things
- This document will collect use cases from a range of application
domains, and identify requirements that are shared across domains,
and those that are specific to each domain.
- Survey of Existing Practices and Standards Relevant to the Web of
- This document will look at existing practices and standards, and
identify opportunities for new work.
- Guidelines on Best Practices
- This document will identify relevant technologies and approaches
to maximise interoperability across all use cases.
- Requirements for Open Markets of Products and Services for the Web
- This document will examine what is needed to enable open markets
of applications and services for the Web of Things. See Section
1.0 for some of the topics that will need to be covered.
- High level architecture for the Web of Things
- This document will provide a high level overview of the
architectural components of the Web of Things.
- End to End Security for the Web of Things
- This document will look at what is needed to ensure end to end
security for applications and services for the Web of Things. For
instance techniques for identifying and authenticating users,
devices, applications and services; techniques for ensuring
confidentiality and privacy, including encryption, access control,
provenance and privacy policies. This should include an examination
of the potential role and security impact of social relationships
between people, places and things.
- Resilience for the Web of Things
- This document will look at what is needed to ensure resilience of
applications and services in the face of rapidly varying demand,
heterogenous versions of hardware and software, hardware and
software faults, and cyber attacks.
Additional deliverables may be added by the Interest Group as
appropriate to explore specific topics in greater depth.
Timeline View Summary
- February 2014: Initial teleconference
- April 2014: First face to face meeting
- July 2015: Initial publication of Use Cases and
Requirements for the Web of Things, and Survey of
Existing Practices and Standards Relevant to the Web of Things
- October 2015: Initial publication of Requirements for
Open Markets of Products and Services for the Web of Things
- December 2015: Initial publication of End to End Security
for the Web of Things, and Resilience for the Web
- Q1 2016: Draft new Working Group Charters for standardizing work
items arising from the Interest Group's studies
- Propose modifications to some existing WG Charters; potentially
earlier than Q1 2016
- Some existing WGs with existing charters; potentially much
earlier than Q1 2016
Dependencies and Liaisons
- Technical Architecture Group
- The breadth of the Web of Things is likely to raise issues that
effect the Web as a whole, and when this occurs, the Web of Things
Interest Group will seek the help of the Technical Architecture
Group with these issues.
and Web Platform Business Group
- The Web of Things Interest Group will liaise with the automotive
and Web Platform Business Group in respect to role of the Web of
Things for automotive applications and services.
Activity Coordination Group
- The Web of Things Interest Group will liaise with the Data
Activity Coordination Group to ensure that the use cases and
requirements for the Web of Things are understood by W3C working
groups developing technologies that support the automation,
integration and reuse of data across applications.
- Privacy Interest Group
- The Web of Things Interest Group will collaborate with the Privacy
Interest Group in respect to requirements and techniques for
ensuring privacy for applications and services for the Web of
Payments Interest Group
- The Web of Things Interest Group will collaborate with the Web
Payments Interest Group in respect to requirements for monetizing
products, applications and services for the Web of Things.
- Web Security Interest
- The Web of Things Interest Group will collaborate with the Web
Security Interest Group to enable end to end security of
applications and services for the Web of Things.
- Web Crypto Working
- The specifications of the Web Crypto Working Group are very
pertinent to the aims of the Web of Things Interest Group in respect
to confidentiality and authentication.
- Web App Sec Working
- For techniques for constraining services to a minimum set of
capabilities as a means to increase security through a reduction in
the attack surface.
- WAI Protocol and Formats
- Review of accessibility perspectives for WoT, including use-cases
and requirements for accessibility of WoT technologies, and examples
of potentially beneficial applications of WoT technologies such as
wearables, and control and sensor networks.
- Data on the
Web Best Practices Working Group
- Focuses on developing the open data ecosystem, guidance to
publishers and fostering trust in data.
- Efficient XML Interchange
- The Web of Things Interest Group will collaborate with the EXI
Working Group in respect to requirements using EXI for resource
constrained devices as part of the Web of Things.
- Other relevant
- The Web of Things Interest Group will review a broad range of W3C
Working Groups for APIs that are applicable to applications and
services for the Web of Things.
- RDF Stream Processing
- The Web of Things Interest Group will collaborate with the RDF
Stream Processing Community Group in respect to use cases and
requirements for dealing with information streams conforming to the
- Other W3C Community
and Business Groups
- The Web of Things Interest Group will watch for and coordinate
with Community and Business Groups whose work are likely to have an
impact on the the Web of Things.
- The Consumer Electronics Association (CEA) is a standards and
trade organization for the consumer electronics industry in the
United States, and as such will be important for integrating the
Web of Things with consumer electronics devices.
- GS1 produces global standards and solutions to improve the
efficiency and visibility of supply and demand chains globally and
across sectors. This is especially relevant to the integration of
the Web of Things in the retail and manufacturing sectors.
- The Industrial Internet Consortium (IIC) seeks to further
development, adoption and wide-spread use of interconnected
machines, intelligent analytics and people at work. This is
complementary to W3C's aims to create standards that enable open
markets of services for the Web of Things.
- Industry 4.0
- Industry 4.0 is a long term project supported by the German
government to realize the potential for smart manufacturing with
richer integration along the manufacturing value chain, faster
time to market, and an increased focus on bespoke products
tailored to each customer's need. The Web of Things Interest Group
should coordinate with Industry 4.0 in respect to use cases and
requirements for manufacturing.
- Bluetooth SIG
- The Web of Things Interest Group will liaise with the Bluetooth
Special Interest Group to understand requirements for services
based upon Bluetooth connections.
- OASIS is a standards development organization, and is working on
standards such as MQTT that offers
an efficient messaging protocol for the Web of Things.
- OMG is a standards development organization, and is working on
standards such as the Data
Distribution Service (DDS) that offers an efficient
messaging protocol for the Web of Things.
- XMPP Standards Foundation (XSF)
- XSF is working on standards for presence, instant messaging, and
real-time communication and collaboration based upon XMPP.
- The European Telecommunications Standards Institute (ETSI)
produces globally-applicable standards for Information and
Communications Technologies, which are likely to be an important
enabler for the Web of Things.
JTC 1/WG 7
- This is a standardization working group that focuses on sensor
networks, and coordination would help build a shared
understanding, harmonization of terminology and interoperability
with the Web of Things.
- The GSM Association (GSMA) represents mobile operators and
develops proposals that can bring important value to the usage of
the Web of Things on mobile networks.
- The Internet Engineering Task Force develops the protocols that
clients use to connect to the Web; ensuring these protocols match
the needs of the Web of Things is an important part of achieving
accessing resourced constrained devices via CoAP.
Participation is open to W3C Members and invited experts. The Chairs
and document Editors are expected to contribute one to two days per
week towards the group. There is no minimum requirement for other
In order to make rapid progress, the group MAY form several task
forces, each working on a separate topic. The group members may
participate in one or more task forces.
This group conducts its substantive work on the public mailing list firstname.lastname@example.org
and encourages non-member contributions on that list. Administrative
tasks may be conducted in Member-only communications. Task forces may
use separate public mailing lists to conduct their work.
Information about the group (deliverables, participants, face-to-face
meetings, teleconferences, etc.) is available from the Web
of Things Interest Group home page.
Consistent with its mission, this group is not a decision-making
body, but rather provides a forum for discussion and advice on
different topics relating to its scope.
Where there is consensus among the representatives of W3C members in
the group, it will be forwarded as a consensus position. Where the
group does not reach agreement, the different positions (whether held
by W3C members or other members of the group) will be forwarded
together, with any decisions to be made by a relevant working group
according to its processes.
The Web of Things Interest Group provides an opportunity to share
perspectives on the topic addressed by this charter. W3C reminds
Interest Group participants of their obligation to comply with patent
disclosure obligations as set out in Section
6 of the W3C Patent Policy. While the Interest Group does not
produce Recommendation-track documents, when Interest Group
participants review Recommendation-track specifications from Working
Groups, the patent disclosure obligations do apply.
For more information about disclosure obligations for this group,
please see the W3C Patent Policy
About this Charter
This charter for the Web of Things Interest Group has been created
according to section 6.2
of the Process Document. In the event
of a conflict between this document or the provisions of any charter and
the W3C Process, the W3C Process shall take precedence.
Charter authors: Dave Raggett
All Rights Reserved.
$Date: 2015-01-21 15:53:00 $