This keynote at the SSN workshop (https://ssn2018.github.io) presents the new W3C/OGC SOSA/SSN ontology and discusses challenges and issues with metadata standards in the Internet of Things.
What Are The Drone Anti-jamming Systems Technology?
The Siloization of the IoT: A Guide out of the App trap
1. The Siloization of the IoT: A
Guide out of the App trap
Armin Haller
Australian National University
2. “We expect to see 20 billion
internet-connected things by
2020.” [Gartner 2017]
Gartner 2017: Leading the IoT. Available from: https://www.gartner.com/imagesrv/books/iot/iotEbook_digital.pdf
7. Enabled through common
standards …
• Physical Communication
Bluetooth, 802.11 Wi-Fi, LPWAN, etc.
• Network/Transport
TCP/IPv4/IPv6, 6LowPAN etc.
• Data Protocols
HTTP/CoAP, Zigbee, Websocket, AMQP, MQTT etc.
11. Envisioned Web Service protocol stack
Adopted from: F. Curbera, R. Khalaf, N. Mukhi, S. Tai, and S. Weerawarana. The next step in web services. In Commun. ACM, pages 29–34, 2013.
Business
Processes
QoS
Description
and
Discovery
Messaging
BPEL4WS
WS-
Security
WS-Reliable
Messaging
WS-Addressing
WS-Transaction
WS-Coordination
UDDI WS-Policy
WSDL
SOAP
XML
Transport HTTP SMTP
21. Missing pieces
• Standardized Taxonomy of Observable Properties (Quantities)
– e.g. weight, height, temperature, color
• Controlled Vocabulary of Features of Interest (Phenomena) per
domain
– e.g. waterbody, air, arm, heart, soil, fire
• Industry Controlled Vocabulary of Sensor/Actuator types
– e.g. scale, thermometer, pedometer, flame detector
• Standardized Industry Procedures (i.e. computational, voice,
gesture processes)
– e.g. on/off, louder/quieter, twisting
22. Micro
data
RDFa
… at the very least
JSON
Service Provider Service Consumer
Actions
Sensors/
Actuators
FoIs
Procedures
System
Capabilities
Unit of
Measures
Observable
Properties
SCHEMA
.ORG
Temporal
Extent
Result
Spatial
Extent
Events
JSON
-LD
23. Conclusion
• Interoperability only guaranteed through the
use of the Web platform (HTML5, HTTP)
• Standardized metadata required to know how
to interact with IoT devices
• Established metadata standards (ontologies)
still missing
… schema.org may plug the gap in the short-
term