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OVERVIEW OF ETSI M2M ARCHITECTURE Presented by: Barbara Pareglio, Ericsson © ETSI 2011. All rights reserved October 2011
OVERVIEW OF ETSI M2M ARCHITECTURE Presented by:
Barbara Pareglio, Ericsson
© ETSI 2011. All rights reservedOctober 2011
Why ETSI M2M ?
Provide an M2M architecture with a generic
set of capabilities for M2M services
Provide a framework for developing services
independently of the underlying networkindependently of the underlying network
Facilitate deployment of vertical applications
Facilitate innovation across industries by
exposing data and information and providing
services.
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M2M M2M –– High Level ArchitectureHigh Level Architecture
M2M Service Capabilities Layer (M2M
NSCL)
M2M GatewayM2M Device
WIRELESSM2M
AREA
NETWORK
M2M Gateway
WIDE AREA NETWORK
mIddIa dIa mIa
M2M App. M2M App.
M2M
Application
M2M Network DomainM2M Device & Gateway Domain
NSCL)
M2M Device Service
Capability (DSCL)
M2M Device
MOBILE
FIXED
.. OTHER
M2M Gateway Service
Capability (GSCL) M2M
Application
M2M
Application
Proprietary
M2M Device
mId
mId
3
mIa
dIa
mIaM2M App.
REFERENCEREFERENCE POINTSPOINTS
Network Network
ApplicationApplication
(NA)(NA)
Device Device
ApplicationApplication
(DA)(DA)
M2M architecture
ETSI M2M adopted a RESTful architecture style
• Information is represented by resources which are structured as a tree
ETSI M2M standardizes the resource structure that resides on
an M2M Service Capability Layer (SCL)
• Each SCL contains a resource structure where the information is kept• Each SCL contains a resource structure where the information is kept
M2M Application and/or M2M Service Capability Layer
exchange information by means of these resources over the
defined reference points
ETSI M2M standardizes the procedure for handling the
resources
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Features offered by ETSI M2M
Identification of the M2M Application and the M2M Devices
Asynchronous and synchronous communication
Store and forward mechanism based on policies for optimising the communication
Location information
Device management based both on OMA DM (wireless) and Device management based both on OMA DM (wireless) and BBF TR-69 (wireline)
Mutual authentication between Network Service Capability Layer and Device/Gateway Service Capability Layer that are connected
Secure channel for transporting data over mId reference point
And much more ….
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Security
ETSI M2M Release 1 provides standardized security mechanism for the reference point mId
The device/gateway needs to have keys for securing the connection.
The device/gateway is provisioned with the key M2M The device/gateway is provisioned with the key M2M Root Key.
The high level procedure are to • Perform mutual mId end point authentication
• Perform M2M Connection Key agreement
• Optionally establish a secure session over mId.
• Perform RESTful procedures over the mId
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Example:
Connected home
Network Application
(NA)
Wireless or Wired Networks
M2M Network (NSCL)
M2M Gateway (GSCL)
M2M Devices with
Device Application
(DA)
High level deployment
Example NSCL
M2M Gateway
WIRELESSwifi
WIDE AREA NETWORKHeating
Heating App
M2M Network DomainM2M Device & Gateway Domain
dIaMOBILE
FIXED
.. OTHER
myHome GSCL
mIdmIa
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SmartHome
AppWashing-
machine
Washing App
Flow of events
Example NSCLM2M Gateway
WIRELESSwifi
WIDE AREA NETWORK
Configure& provision
Heating
Heating App
M2M Network DomainM2M Device & Gateway Domain
MOBILE
FIXED
.. OTHER
myHome GSCL
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register
register
register
Washing-
machine
Washing App
SmartHome
App
Configure&
provision
Network Application registration
The Network
Application registers
to the NSCL
• Name of the NSCL =
exampleNSCL
exampleNSCL
applications
scls
SmartHome-ID
• Network application
register with the ID =
SmartHome-ID containers
groups
accessRights
subscriptions
discovery
subscriptions
mgmtObjs
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containers
groups
accessRights
subscriptions
notificationChanel
Gateway registration
The gateway (GSCL)
registers to the NSCL
• Name of the NSCL =
exampleNSCL
• Name of the GSCL =
myHomeGSCL
exampleNSCL
scls
subscriptions
myHomeGSCL
containers
groups
applications
accessRightsmyHomeGSCL
Before registration
the GSCL and NSCL
are authenticated by
means of the M2M
Communication
procedures
applications
containers
groups
accessRights
subscriptions
discovery
mgmtObjs
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accessRights
subscriptions
mgmtObjs
notificationsChannel
m2mPocs
attachedDevices
Result of Gateway registration
As a result of the
gateway registration
a resource
representing the
NSCL is created in the
myHomeGSCL
scls containers
exampleNSCLgroups
applicationssubscriptions
NSCL is created in the
GSCL. accessRights
subscriptions
mgmtObjs
notificationsChannel
subscriptions
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applications
containers
groups
accessRights
subscriptions
discovery
Device applications registration
The device
Applications
register to the GSCL
• Name of GSCL =
myHomeGSCL
myHomeGSCL
applications
scls
Heating-App-ID
• Device application
heating register
with the ID =
Heating-App-ID
• Device application
washing-mashing
register with the ID
= Washing-App-ID
containers
groups
accessRights
subscriptions
discovery
Washing-App-ID
subscriptions
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containers
groups
accessRights
subscriptions
notificationChanel
Appropriate access rights needs to be set up.
• For example the network application that knows the
GSCL and the applications is setting up the
accessRights
What’s next ?
accessRights
information can now be transferred over the
mId.
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Store information
The information
from the 2 device
applications are
stored in the
containers in the
exampleNSCL
scls
myHomeGSCL
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containers in the
NSCLcontainers
heaterInfo
washingInfo contentInstances
subscriptions
Heating
Heating App
Flow of events: add & read data
Example NSCL
M2M Gateway
M2M Network DomainM2M Device & Gateway Domain
SmartHome
AppWashing-
machine
Washing App
myHome GSCL
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read
add
add
add
Flow of events: subscribe & notify
Example NSCL
M2M Gateway
Heating
Heating App
M2M Network DomainM2M Device & Gateway Domain
SmartHome
AppmyHome GSCL
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subscribe
notify
Washing-
machine
Washing App
What if …
A new Network Application would like to reuse some of the
data produced?
• For example the device manufacturer that controls the performance
and status of the device
• The utility company that monitors the levels of utilization for each
appliancesappliances
• ….
All you need to do is to develop the Network Application and
• Ask the “owner” of the information to give you read permission by
updating the access right
• Retrieve the information and consume it
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High level deployment
Example NSCL
M2M Gateway
Heating
WIRELESSwifi
WIDE AREA NETWORK
Utility
App
Heating App
M2M Network DomainM2M Device & Gateway Domain
dIaMOBILE
FIXED
.. OTHER
myHome GSCL
SmartHome
App
Washing App
Washing-
machinemId
mIa
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Manufacturer
App
Legacy area
network
Interworking
