Embedded devices on the

Internet of Things

Zach Shelby, Sensinode

Jan Höller, Ericsson

Internet of Things

Devices in Constrained IoT Environments

› Endless applications in the IoT domain

› Embedded low cost and low power devices

› Legacy technologies

› Current practice is stove pipe solution

– single device – single application

ETSI 3rd M2M WS | 2012-07-11 | Page 2

–

› Transformation needed

– application independent devices

– many-to-many

› IP and the Web Paradigm paves the way to hide and avoid complexity and to provide simpler lower cost solutions

What is “constrained”

Scaling NetworksLow Cost

ETSI 3rd M2M WS | 2012-07-11 | Page 3

Low Bandwidth

Battery Powered

LimitedProcessing

Constrained but still Internet

› Today - a complete IP based Web stack can be run on

small devices with microcontrollers

48 kB of Flash 8 kB of RAM

ETSI 3rd M2M WS | 2012-07-11 | Page 4

IEEE

802.15.4PLC DECTBTLE

IPv6

UDP

CoAP

Resources

6LoWPAN

/temp /light /switchInternet

8 kB of RAM

Embedded Web

› The Internet of Things will be powered by Web technology

› Technology from the IETF

– Constrained Application Protocol (CoAP)

– Web Linking

– Resource Directory

– Security

ETSI 3rd M2M WS | 2012-07-11 | Page 5

– Security

› Application Semantics

– IPSO Application

Framework

– OMA Lightweight

M2M Objects

Embedded Web in M2M Standards

SE2.0

IP RouterCoAP

HTTP

ETSI 3rd M2M WS | 2012-07-11 | Page 6

IP and Web

Web & Mobile AppsOMA Lightweight

CoAP

HTTP

There is still a role for gateways

› Traditionally bridges heterogeneous

networking technologies

› Gateways can, and do, many more

things

– local storage

– data processing, event filtering and

stream analytics

semantic annotation and metadata

IoT

Mgmt

Surveillance

Energy Mgmt

HVAC Ctrl

Access Ctrl

Applications

Service Providers

ETSI 3rd M2M WS | 2012-07-11 | Page 7

– semantic annotation and metadata

– local sensor-actuator control loops

– security perimeter

– shielding resource constrained

devices

› Multiple applications and involving

multiple stakeholders and service

providers

– Cloud based access to devices

necessary

6LoWPAN KNX BACnet ZigBee

Device

Mgmt

IoT Enablement

Gateway

Internet

Uniform IoT Resource Access

› Decouple IoT level issues

from Device level issues– IoT resource abstraction

– Separate bindings for Device

Management vs. handling IoT

resources

› Provide normalization of M2M

device capabilities– Generic Device API framework

Gateway

Cloud

Remote DeviceManagement

OSGi TR-069OMA DM

IoT ServiceEnablement

CoAP HTTP

M2M SE

mId

IMS

ETSI 3rd M2M WS | 2012-07-11 | Page 8

–

› Avoid stove pipe profiles

› Go for simple profiles that are

application independent to

ensure interoperability– IPSO Application Framework

– OMA Lightweight Objects

› Allow adaptation to different

cloud environments– Native Embedded Web Services –

IETF CoRE

– ETSI M2M mId

– OMA DM and TR-069

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Generic Device API

AN

T+

Ad

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TR-069

Connector

SDK

Connector

Co

AP

Ad

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OMA DM

Connector

CoAP/OMA

Lightweight

CoAP/HTTP

Proxy

ETSI M2M

mId

Connector

Embedded Web in Smart Home Demo

› Smart Energy use case

› Heterogeneous device

integration

– CoAP sensors and actuators

– Z-Wave Smart Plugs

RD Social Web Of Things Apps

SWoT

Client

Cloud enablers

ETSI 3rd M2M WS | 2012-07-11 | Page 9

–

› Uniform device exposure

– REST via HTTP and CoAP

– IPSO Application Framework

› Supported:– CoAP

– HTTP-CoAP proxying

– Local caching and Observations

– Resource Directory Z-WAVE Smart Plugs, AEON LABS

Residential M2M Gateway

Linux

OSGi

Z-wave/CoAP

HTTP-CoAP Proxy

Resource Directory

CoAP Devices: STM32W Wireless MCU&Sensors,

Smart Plugs STEVAL-IHP004V1

Embedded Web in ETSI M2M Demo

mIdPOST Links

ETSI 3rd M2M WS | 2012-07-11 | Page 10

Street Lighting M2M App

CoAP CoAP CoAP

mIamIdPOST Links

Web Linking semantics end-to-end

ETSI 3rd M2M WS | 2012-07-11 | Page 11