Building the Web of Things

Transcription

1 Buiding the Web of Things Interoperabiity for Connected Devices Dave Raggett W3C Track 14 Apri 2016

2 Many Potentia IoT Appication Areas each evoving rich capabiities Smart Homes Wearabes Heathcare Power & Environment Smart Cities Manufacturing 2/22

3 The Internet of Things Sti very immature, but with massive potentia Lack of interoperabiity at the appication eve End to end security is impractica across different patforms Sios are hoding back the potentia Open or cosed system? Cosed systems incentive: contro Open systems prompt: reduced costs and increased market size Need for wide adoption of shared open standards 3/22

4 Anaogy with eary days of networking Before the Internet, there were many noninteroperabe network technoogies IP made it simpe to interconnect networks and create interoperabe services The Internet grew exponentiay as the opportunities were reaised Likewise for the Web which took over from isoated information services Direct anaogy with today s IoT sios and their ack of interoperabiity The Web of Things is the equivaent of IP for semantic interoperabiity and end to end security The Web of Things wi enabe exposive growth as the barriers to interoperabiity are torn down 4/22

5 Web of Things The Web is fueing a transition from costy monoithic software to open markets of apps 5/22

6 Web of Things Appications act on software objects that stand for things Loca things Remote things Rich descriptions for every thing Data modes, semantics, metadata Ontoogies that describe things Things don t need to be connected Abstract entities and unconnected physica objects 6/22

7 The Web of Things in the Home Browser for HMI Ambient or battery operated IoT devices Gateway Coud based Services Powered, muti-protoco Firewa 7/22

8 Distributed Web of Things Thing descriptions can be used to create proxies for a thing, aowing scripts to interact with a oca proxy for a remote entity Scripts can run on servers or as part of Web pages in Web browser for human machine interface Thing topoogies Peer to Peer, Peer to Peer via Coud, Star, Device to Coud, Star to Coud cient script server script 8/22

9 Communications Stack Cean separation of concerns Appication Deveoper (WoT focus) Patform Deveoper (IoT focus) Appication Things Transfer Transport Network Scripts that define thing behaviour in terms of their properties, actions and events, using APIs for contro of sensor and actuator hardware Focus on data types and APIs Software objects that hod their state Abstract thing to thing messages Semantics and Metadata, Data modes and Data Bindings of abstract messages to mechanisms provided by each protoco, incuding choice of communication pattern, e.g. pu, push, pub-sub, peer to peer, etc. REST based protocos, e.g. HTTP, CoAP Pub-Sub protocos, e.g. MQTT, XMPP Others, incuding non IP transports, e.g. Buetooth Underying communication technoogy with support for exchange of simpe messages (packets) Many technoogies designed for different requirements 9/22

10 Scaabiity 10/22

11 Web of Things for the Maker Community Open source projects are underway, e.g. for the Arduino Arduino Ethernet Shied 16 KB RAM MicroSD card sot Controed through SPI bus Poing or H/W interrupt Cost: 4.75 GBP on ebay Arduino Uno with ATmega328P MCU 2 KB RAM 1 KB EEPROM 32 KB FLASH Lots of I/O pins Cost: 2.33 GBP on ebay 11/22

12 12 Web of Things Activity 12/22

13 W3C Web of Things Interest Group Workshop in Berin (June 2014) Launch of Web of Things IG in 2015 Chaired by Jörg Heuer, Siemens Task forces Thing descriptions APIs and protocos Discovery and provisioning Security, privacy and resiience Communications and coaboration Strong emphasis on impementation experience Demos and pug-fests Heps to buid a shared understanding Montrea Face to Face, Apri /22

14 Members of the Web of Things Interest Group 14/22

15 Liaisons and Coaborations Reaching out to industry aiances and SDO s to drive convergence to uneash the potentia Pattform Industrie4.0 Especiay the semantics subgroup Industria Internet Consortium Open Connectivity Foundation OPC Foundation IETF/IRTF onem2m AIOTI AIOTI 15/22

16 Web of Things Working Group The Interest Group (IG) is working on Use cases, requirements, technoogy andscape and pans for aunching working groups (WG) IGs prepare the ground for standards but don t deveop standards WGs are chartered to deveop standards (W3C Recommendations) We re coecting ideas for a Working Group incuding Horizonta metadata vocabuaries (things, security, communications) Seriaisations of metadata, e.g., as JSON-LD APIs and bindings to specific protocos and patforms in coaboration with the patform owners Web of Things Working Group to be aunched in /22

17 17 Web of Things What, why, how, actions 17/22

18 C-eve corporate decision makers 18 What is the probem to be addressed? Fragmentation of the IoT into many non-interoperabe patforms Why is it important? Soving this wi enabe exponentia growth as we saw with the Internet and the Web The network effect: Metcafe s aw How it is to be soved? Inter-patform standards that pay an anaogous roe to IP for connecting previousy incompatibe networks Decouping appications from protocos Enabing different patforms to interoperate Compementing, not competing, with patforms What action are we seeking? Commit to join W3C & assign staff to participate in Web of Things groups Ensure your company is in the driving seat for the open IoT 18/22

19 SDO s and Industry Aiances 19 What is the probem to be addressed? Difficuty of creating services spanning different patforms due to a ack of semantic interoperabiity and a miss match of assumptions around trust and security Why is it important? Soving this woud enabe exponentia growth in services ike we saw for IP and the Web How it is to be soved? Inter-patform standards defining an interingua for metadata, and shared assumptions in respect to end to end security across different patforms What action are we seeking? Active coaboration on integration with the Web of Things and aignment of marketing messages 19/22

20 Engineers and Deveopers 20 What is the probem to be addressed? Fragmentation of patforms and IoT technoogies, and high cost of integration with a piecemea approach Barriers for semantic interoperabiity and end to end security Why is it important? Simper, faster, more fexibe appication deveopment Leveraging existing services and communities in the Web ecosystem Be part of the next big thing, strong growth in job opportunities How it is to be soved? Open standards for Web based abstraction ayer, compementing existing patforms and standards, and enabing patforms to interoperate securey What action are we seeking? Joint work on experimenta impementations that expore what it means to integrate with the web of things hep to create evauation kits, and spread the word Joint work on white papers to forge a shared understanding across companies, aiances and SDOs 20/22

21 The Bottom Line The Web is essentia for reaizing the fu potentia of the IoT The Web provides a unifying framework for semantic interoperabiity The Web acts as a goba marketpace for suppiers and consumers of services 21/22

22 Work with us to buid the Web of Things! Thank you! For more information on W3C see: 22/22