1. technology and computing

ETSI M2M / oneM2M
and the need for semantics
Joerg Swetina (NEC)
([email protected])
Outline of this presentation
▐ A simple picture of Machine-to-Machine (M2M) communications
▐ Where do standards apply to in M2M ?
▐ The creation of oneM2M global Partnership Project
▐ ETSI TC M2M – working on a Standard for M2M Service enablers
▐ The study on “Semantic support for M2M Data“ in ETSI TC M2M
▐ Summary
Page 2
A simple picture of M2M
M2M Area Network
M2M Application
DIRECT
CONNECT
Service
Enablers
(Capabilities)
M2M
Core
M2M
Gateway
Client
Application
DIRECT
CONNECT
3
▐ A simple picture of Machine-to-Machine (M2M) communications
▐ Where do standards apply to in M2M ?
▐ The creation of oneM2M global Partnership Project
▐ ETSI TC M2M – working on a Standard for M2M Service enablers
▐ The study on “Semantic support for M2M Data“ in ETSI TC M2M
▐ Summary
Page 4
Many standards want / need to play in the M2M arena
e-health
Automotive, ITS
M2M
HEMS, Smart House
BEMS
The standards landscape related to M2M is very large.
e.g. the Global Standards Collaboration Machine-Machine Task Force (GSC MSTF)
identifies 143 organisations with a direct or indirect interest in M2M standardisation !
Page 5
1 - Standards for Wide Area Networks
Standards for Wide Area Networks
(3GPP, fixed NW, WiMax…):
Target:
protect networks against negative
effects of M2M traffic (many devices, non-human traffic …)
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2 - Standards for Local Area Networks
Standards for
Local Area Networks
(ZigBee, Bluetooth,.)
Target:
foster use of LAN
technology by
supporting services
of multiple verticals
Example ZigBee:
 802.15.4 phy/link layer
optimized for low bitrate
 Support of vertical
industry segments:
Application Profiles
Page 7
3 - Standards and fora of ‘vertical’ industries
Standards /
fora of ‘vertical’
Industries
(applications)
Target:
enable
interoperable,
cost-efficient
Solutions
… eventually will create a part of …
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4 - Standards for M2M Service enablers
Standards for
M2M Service enablers:
Target:
(a) end-to end enablement across servers, gateways, devices
(b) standardized service interfaces
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▐ A simple picture of Machine-to-Machine (M2M) communications
▐ Where do standards apply to in M2M ?
▐ The creation of oneM2M global Partnership Project
▐ ETSI TC M2M – working on a Standard for M2M Service enablers
▐ The study on “Semantic support for M2M Data“ in ETSI TC M2M
▐ Summary
Page 10
Latest news: the oneM2M global Initiative
▐ To avoid creation of competing M2M standards the 7 SDOs, that publish telecom
standards: TTC, ARIB (Japan), ATIS, TIA (USA), TTA (Korea) CCSA (China),
ETSI (Europe) are now finalizing set-up of the oneM2M Global Initiative.
 ETSI TC M2M (Europe), TIA TR-50 (USA) and CCSA TC 10 (China) will give up
individual work and join their efforts to create a single M2M standard!
▐ Objective:
oneM2M
Global Initiative
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 Develop one globally agreed M2M
specification, initial focus on Service Layer
 Consolidate current M2M Service Layer
standards activities into the oneM2M
initiative
 Partner/Collaborate with wireless and
wireline SDOs and fora responsible for
developing standards
• for Core and Access Networks.
• the vertical markets (i.e., domain-specific)
• auxiliary specifications (e.g., OMA DM, W3C
for Device APIs).
▐ A simple picture of Machine-to-Machine (M2M) communications
▐ Where do standards apply to in M2M ?
▐ The creation of oneM2M global Partnership Project
▐ ETSI TC M2M – working on a Standard for M2M Service enablers
▐ The study on “Semantic support for M2M Data“ in ETSI TC M2M
▐ Summary
Page 12
ETSI TC M2M - the ETSI M2M Vision
13
Lower CAPEX for
M2M Services
Lower OPEX for M2M
Services
Faster time for new
M2M services to
markets
Reduces investment
barriers to new
markets
Interoperable
solutions push cost
down
Simplifies M2M for
users and Apps
developers
M2M is inverting - ‘horizontalizing’ - the pipes
Pipe (vertical):
Horizontal (based on common Layer)
1 Application, 1 NW,
1 (or few) type of Device
Applications share common infrastructure, environments
and network elements
Business
Application
Business
Application#1
Business
Application#i
Business
Application#N
Common Application Infrastructure
Transport Network
(mobile, fixed,
Powerline ..)
Transport Network
2
Transport Network
1
Gateway
Local NW
Device
14
IP
M2M Applications
providers run
individual M2M
services. Customer
is Device owner
M2M Service
provider
hosts several M2M
Applications on his
Platform.
Wide Area Transport
Network operator(s)
Customer is the M2M
service provider
Gateway
End user
owns / operates the
Device or Gateway
Local NW
Device
Device
Device
Device
Value of a standardized horizontal M2M service layer
Reduced complexity,
Standard APIs and protocols,
Scalable
solution,
Lower
CAPEXhorizontal
for
Reduced
initial investment costs.
M2M
Services
Re-use of platform to test and
roll out new services,
Faster
time for new
Simplified
applications
development.
M2M
services to
markets
Standard interfaces, protocols
opens vendor ecosystem,
Interoperable
Reduces solution cost and
improves
interoperability.
solutions
push cost
down
15
Better network efficiency
Single service layer for all verticals
Lower OPEX
for M2M
Network independent,
use best
networks for deployment
needs.
Services
Simplicity of deployment,
Allows to trail new services,
Less expensive to
roll outinvestment
than
Reduces
dedicated
solution.
barriers
to new
markets
Hiding the complexity of
underlying networks to
Simplifies
M2M for
Applications developers
foster
innovation of new
services.
users
and Apps
developers
A bit more technical on ETSI M2M
▐ Defines a “Service Capability
Layer” (SCL) on top of
connectivity layers
 SCL in network server,
gateways and devices.
 SCL does registration, access
rights, security&authentication,
data-transfer (containers),
subscribe / notify, groups …
▐ API for applications is based on
REST principles allowing
 Scalability (stateless, idempotent)
 Unreliable connections
 Binding to e.g. HTTP, CoAP
▐ Re-uses TR-069 (from BBF) and OMA DM (from OMA) for device management
 ETSI M2M Release 1 has been finalized this year!
 All specifications and reports openly available at: http://docbox.etsi.org/M2M/Open/Latest_Drafts/
Page 16
The ETSI M2M Specifications Work
Use Cases [Stage 0]
TR 102 691
Smart
Metering
TR 102 935
Smart Grid
impacts on
M2M
TR 102 966
TR 102 732
TR 102 857
TR 102 898
eHealth
Connected
consumer
Automotive
P
TR 102 897
City
automation
TS 102 689
TR 102 725
after this
overview
on
M2M
standardization…
M2M
Service
Stage 1
Requirements
P
M2M
Definitions
This is what you may be waiting for ..
Stage 2
Interworking
with M2M Area
Networks
TS 102 690
M2M Functional
Architecture
TR 101 531
P
TR 102 167
Threat analysis &
counter measures to
M2M service layer
Re-use of 3GPP
nodes by
M2MSC layer
P
TS 102 921
TS 101 404
17
OMA DM
compatible
Management
Objects
Page 17
Stage 3
M2M Communications; mIa,
dIa and mId interfaces
P
TS 101 405
TR 101 584
BBF TR-069
compatible
Management
Objects
Semantic
support for
M2M Data
▐ A simple picture of Machine-to-Machine (M2M) communications
▐ Where do standards apply to in M2M ?
▐ The creation of oneM2M global Partnership Project
▐ ETSI TC M2M – working on a Standard for M2M Service enablers
▐ The study on “Semantic support for M2M Data“ in ETSI TC M2M
▐ Summary
Page 18
Why think about semantics in M2M ?
M2M needs to cope with heterogeneity ...
Complexity Dimension: M2M connects heterogeneous entities
 administration effort for M2M services becomes huge
Example: Buildings come in all kind of formes and sizes
 configuring / adapting building management systems is tedious  CAPEX/OPEX
 many, many new M2M applications for various end users – many buildings:
Is automatic adaptation feasible? Can we reduce manual integration work?
How can the M2M system cope with heterogeneous subsystems?
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M2M needs to adapt to Changes ...
Time Dimension: Real World is changing fast
 sources of information for M2M services change over time
Space Dimension: Real World is moving –
M2M services receive information from various places
How can the M2M system capture the real-world changes?
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A secondary Market for M2M Data may evolve ...
Common Interface
Data Transport
M2M Service
Provider
Smart City
Data Analysis
Data Transport
M2M Service
Provider
Primary M2M Market
 vertically connected sensor/applications
 target a specific business need
 collect and manage data through the
M2M platform
Secondary Open M2M Market
 Re-use the data collected in the primary
market – semantics will help
understanding the original data
 Provide Data Analysis (aggregated,
anonymized, processed information,
e.g. for Smart City administration)
A new role for the M2M Service provider
Data Aggregator and Data Broker
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Study “ Semantic support for M2M Data“ in ETSI M2M
▐Study Item on „Semantic support for M2M Data“ in ETSI M2M
(M2M(12)18_006r2)
 Agreed at M2M#18 (January 2012),
 NEC is rapporteur
 Strong interest by operators and vendors (Supporters: Telecom Italia,
France Telecom, KDDI, NEC, Gemalto, Interdigital, Huawei)
▐TR 101 584 (DTR/M2M-00017), currently at version 0.2.0
 Since ETSI M2M Rel.-2 is expected to be a short release (6 – 9 month) only
little normative work is envisaged in Rel.-2 after the study is finished.
▐Current discussion
 Use cases, definitions, basic questions ...
 If and how „ Data Source Abstraction“ needs to be considered in the study.
• Data Source Abstraction is using the semantic information that devices, defined
by different vertical standards, are semantically equivalent (e.g. both, a lightswitch
specified by ZigBee and a lightswitch specified by KNX are semantical equivalent
“lightswitches“)
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Scope of Study on „Semantic support for M2M Data“
• pre-normative study in order to facilitate normative specification work in ETSI M2M Rel.-2
or later.
• Study will analyse benefit, feasibility and potential requirements for the support of
semantic information on application related M2M Resources in the M2M system. The
ETSI M2M system would, however, only provide a means to create and handle such
semantic information in the ETSI M2M system;
ETSI M2M shall continue to stay independent of ‘vertical’ markets who in general
would define the semantics of M2M data related to their field of expertise.
• use cases that illustrate provisioning and usage of semantic information.
• investigate on the kind and amount of semantic information that would become
available in the M2M system,
keeping in mind a trade-off between complexity and usability.
• discovery mechanisms for semantic information in the ETSI M2M System. This should
take into account how existing solutions from other standards or research could be used
within the ETSI M2M architecture.
• consider on issues of ownership/responsibility for application related M2M Resources
in the case that the M2M system can provide semantic information on them. This needs to
take into account the need for support of different levels of data privacy and
confidentiality..
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Vision of the new ETSI M2M study item
M2M application 1
M2M app 2
...
▐ Overall goals:
 Enable the M2M System to
hold (semantic) description
of the M2M data that are
handled in the system
(e.g. by annotations that
reference an ontology)
 Decouple M2M applications
from concrete device
installations (horizontalization)
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▌ 3 steps towards these goals:
(1) Make M2M data understandable
without prior knowledge about the
data or devices that produced them
(2) Make M2M data / devices
discoverable by their description
(3) Offer interaction on higher level of
abstraction (physical / virtual
entity modeling)
▐ A simple picture of Machine-to-Machine (M2M) communications
▐ Where do standards apply to in M2M ?
▐ The creation of oneM2M global Partnership Project
▐ ETSI TC M2M – working on a Standard for M2M Service enablers
▐ The study on “Semantic support for M2M Data“ in ETSI TC M2M
▐ Summary
Page 25
Summary
▐ IN the area of M2M many standards will play in the market
▐ ETSI TC M2M created specifications that covers end-to-end
Service Enablement across many networks and for all kinds of
‘vertical’ markets.
▐ By the end of the year ETSI TC M2M and similar SDOs in China
and USA will stop working individually and join efforts to create a
single standard under the name of “oneM2M Global Initiative”.
oneM2M will strongly encourage participation of ‘vertical’ markets.
▐ ETSI TC M2M identified the need for “Semantic support for M2M
Data”. A study has been started this year, however it is still at its
initial stage.
 This study would profit from results in related research!
 Please contribute expertise from your research project!
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Backup
Page 28
Another reason for “Semantics”: Device abstraction
▐ Current (Rel-1) ETSI M2M has not specified interworking with ‘verticals’
▐ To make ETSI M2M System useful to ‘verticals’ it needs to interwork with existing
Local Area Networks and existing vertical standards (data and functions).
 “Device Abstraction”: ETSI wants to offer
common functions abstracted from several
similar interworked standards
(e.g. a lamp is just a “lamp”, not a Zigbee
lamp, BacNet lamp…).
=> The application doesn’t need to
understand individual standards
... this kind of interworking already exists in
ETSI M2M for BBF TR-069 and OMA DM
 Currently several SDOs (HGI, BBF, OMA,
OSGI, ETSI) are working on “Abstraction
layer” for Smart Home.
Clearly “Abstraction” introduces semantic
concepts into ETSI M2M (the concept of a
“lightswitch” introduces semantic information)
=> How will this fit to a more general
semantic description of M2M data?
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Questions to be solved by ETSI M2M Semantics (I/II)
▌ How should data be annotated in order to be understandable?
 should data be universally understandable, or only inside specific
vertical domains? Where is the borderline?
 what is the best way to create extensible annotations, i.e. from
minimal semantic information (simple ontology) towards more
elaborate?
▌ Where do the semantic descriptions (ontologies) come from? Who
defines the ontologies?
 defined fixed catalogue of ontologies vs toolbox for publishing/using
▌ Where will resources for virtual entities be stored
a. as M2M resources by the M2M system? (similar to resources from
sensors..) or
b. rather in applications? I.e. the M2M system only maintains resources
for physical entities (sensors, actuators) that are semantically linked to
virtual entities in the applications
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Questions to be solved by ETSI M2M Semantics (II/II)
▐ What needs to go into the standard, what should be out of scope
(e.g. as unique features for NEC products)?
 Geofencing Example: Standard interfaces, but technology proprietary
▐ How can ETSI M2M discovery functions be extended to enable
semantic discovery?
▐ Entities need to be linked (e.g. relationships like „A contains B“,
„A is a B“, „A observes B“). How can such a linkage be done in the
ETSI M2M system?
▐ ... and many more...
Page 31
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 optimizing the
communication
▐ Location information
▐ 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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M2M Security
▐ R1 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 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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33
ETSI M2M further keywords
 Release2
 Ongoing work for additional fonctionalities
 expected publication in 2012
 Main items discussed for Rel2:







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Protocols mapping to ETSI M2M methods (linked to TR 102966)
Putting the basis for further abstraction work (linked to Draft TR
101584)
Charging/billing with appropriate data recording
Service discovery
QoS
Service discovery
Security extensions
Next steps
▐ Next ETSI M2M 2012 meetings:
 16-20 July, in Sophia-Antipolis (France)
 17-21 September, Sophia-Antipolis
 3-7 December, in China
▐ ETSI “M2M workshop” 23-25 October, Sophia-Antipolis
▐ Also for your information, OneM2M Technical Plenaries:
 First OneM2M Technical Plenary 24-28 Sept, Sophia-Antipolis
 OneM2M#2 Technical Plenary 10-17 Dec, in China
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