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TAHI INTEROPERABILITY STANDARDS. PCA: The Industry Conference Blunsdon House Hotel 30 th October 2008 Stephen Pattenden – Telemetry Associates Limited / TAHI / CENELEC. INTEROPERABILITY: A KEY TO INTERNATIONAL BUSINESS : WARSAW - 6-7th February 2008. TAHI INTEROPERABILITY STANDARDS.

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Tahi interoperability standards


PCA: The Industry Conference

Blunsdon House Hotel

30th October 2008

Stephen Pattenden – Telemetry Associates Limited / TAHI / CENELEC

Tahi interoperability standards1



a look at how the home environment is creating business opportunities for the IT industry and TAHI’s role in making this happen











Scenario for the future



Tahi interoperability standards

Smart Homes with home electronic systems have become the “must have” in the market – everybody has one!

Tahi interoperability standards

Multiple manufacturers supply the market

Tahi interoperability standards

Everything has a processor in it, everything can communicate and multiple systems and protocols can be used

Tahi interoperability standards

We have entertainment systems (a/v, multi-media etc.) and they all work together and link into the Future Internet and you can have whatever entertainment whenever you want it

Tahi interoperability standards

We have

Energy Management systems saving energy by monitoring everything that uses energy

Telecare and Health systems looking after the elderly at home

Physical security systems keeping us safe

Tahi interoperability standards

We have

Home Automation systems running the house and looking after lighting, windows, doors ..

PC and IT Systems linked to A/V and helping us work from home

Domestic Appliance Systems being monitored for optimum working efficiency

Tahi interoperability standards

potentially 450 Million Smart Homes across Europe with multiple systems, multiple devices - maybe 1 Billion World-wide

Tahi interoperability standards

So what’s the problem?

  • we have a €600 Billion per annum market

  • we have a digital society

  • every entertainment source is at our fingertips

    Well ………

Tahi interoperability standards

Any home will have multiple systems that will share the same physical media

Tahi interoperability standards

No two homes will have quite the same mix of systems, services, networks, media

Tahi interoperability standards

Installers, vendors and consumers fit equipment on an ad-hoc basis

Tahi interoperability standards

0.1% of consumers may know what is installed

0.0001% may understand how it all works together

Tahi interoperability standards

90% of homes will have some sort of home electronic system

Worldwide there may be up to 1 Billion of such homes by 2027

Tahi interoperability standards

Multiple interoperable systems need management and it is not trivial

Tahi interoperability standards

potentially 450 Million Smart Homes across Europe with multiple systems, multiple devices - maybe 1 Billion World-wide

Tahi interoperability standards

Smart Home systems will be much more varied than your offices.

In the office you have skilled IT specialists who keep the office working . . . . . . . . . ?

Tahi interoperability standards

In the home you

Tahi interoperability standards

Checking the integrity of the security system

Fault in the security system - house closing down

System error the house will reboot in 20 seconds

Ring 08 70 33 34 44 4 for support services (calls cost €15,00 per minute)

Communication systems closing down

Don’t panic!

Don’t panic!

Don’t panic!

Don’t panic!

Don’t panic!

Don’t panic!

Don’t panic . . . . . . . . . . . . . . . . help!

Tahi interoperability standards

In the home you

DON’T have any IT support

If we don’t have real INTEROPERABILITY making everything work together

This will be a major BARRIER to market growth

Tahi interoperability standards

We have to find ways to use automatic systems to manage Smart Homes – we do not have the people to do it

Tahi interoperability standards

We need Interoperability and Management Frameworks that allow existing systems to interoperate

Tahi interoperability standards

We need self healing software, firmware, hardware, networks and devices

Tahi interoperability standards

We have to have totally reliable systems or systems that degrade gracefully – some applications will be life critical

Tahi interoperability standards

We are not there yet!

We simply cannot have the Smart Home “crashing”.

How do you reboot the house?

Tahi interoperability standards

We have to get it right now before the mass market gets under way

And we don’t have much time left.

Tahi interoperability standards

So what does the A/V, Networked Media, Entertainment sector have to do with all this?

We have


IGRS, KNX, LON, Zigbee,

Providing all the answers … .

But lots of other stuff in the home such as assisted living, energy management, etc..

Tahi interoperability standards

ENTERTAINMENT is not the ONLY system in the digital home

  • it uses energy

    • so we may need to measure and control energy use

  • community and telecare systems may need to use it for communicating with people.

  • other systems use the same media

  • we may need to link with entry and security systems

Tahi interoperability standards

The Entertainment system has a key role in providing the information conduit to and from all the other smart systems in the digital home

Entertainment systems

Entertainment Systems

Tahi interoperability standards

A Telecare system will need to use A/V systems to provide communication between carer and patient

Telecare sector

Telecare Sector

Tahi interoperability standards

A Home Control system will need to have an easy to use interface for setting the environment.

Tahi interoperability standards

A door entry system will need to show who is at the door and have controls to open the door to welcome visitors – displayed on the TV, PC or even the Mobile phone

Security sector

Security Sector

Tahi interoperability standards

Domestic Appliances will be monitored to keep them working in perfect condition and it will be possible to send alerts to the A/V system

Appliances sector

Appliances Sector

Tahi interoperability standards

An Energy system will need to use A/V to show energy used, tips for saving energy and what all the devices in the system use

Energy management

Energy Management

Tahi interoperability standards

A key requirement is they may all need to work together

there may be necessity for priorities between applications.

Interoperability between sectors

Interoperability between Sectors

A typical application may check the window open sensor and turn off the radiator and report to the TV or PC

Or the Smart Meter may tell the fridge the current demand for energy and get it to switch off temporarily

  • IT and Home Network

  • Security (physical)

  • Energy Management

  • Entertainment

  • Smart Metering

  • White Goods


Window open sensor

Room occupancy sensor

Smart Electricity Meter

Radiator control

More than just entertainment

More than just Entertainment

  • As we have seen the Entertainment sector is more than it seems

    • it entertains – and that is complex enough

    • it will provide information

    • it will display information

    • it will be one of a number of interfaces for providing control to systems in the Smarthouse

    • other sectors need it as an interface

  • This convergence leads to complexity

Complexity and chaos

Complexity and Chaos

  • Each sector is working on interoperability

  • many applications need to use resources from many sectors

  • every home will be different

  • different stakeholders will provide / pay for / “own” different components.

    • (permissions, priorities, micro payments etc.)

    • (knowing what is already installed – what it does and who owns it)

Complexity and chaos1

Complexity and Chaos

  • The net result is a situation of

    • multiple systems in the home

    • Very high levels of variability and complexity

    • No visibility of available systems, applications and components

    • No guarantee of QoS or integrity of information

  • In other words unless we can do something about the situation – CHAOS

  • We need standards for Interoperability that apply ACROSS sectors

Tahi interoperability standards

Potential chaos is a market opportunity

Integrating, managing, diagnosing and repairing systems in the home is a new service.

What is this service worth?

Tahi interoperability and standards

TAHI Interoperability and Standards

  • Most standards for equipment in the SmartHouse standardise within that equipment type

    • Interchangeability rather than interoperability

    • interoperability between similar equipment in networks and communication

  • Most Standardisation in the Home does not cover interworking with different product types or sectors

  • Some sectors have specified Interoperability within their sectors (DLNA, HANA, DVB, ETSI/ITU, CECED, KNX)

  • However, convergence is requiring that devices and systems in different sectors work together

What is needed

What is needed

An Interoperability Framework Standard plus a set of sector standards covering:

Interoperability principles and definitions


Communication paths

Co-existing with all (or most) existing work

Authority / legitimacy


Open systems

CEU/Government/Industry sponsorship

Interoperability framework standard

Interoperability Framework Standard

  • The Application Home Initiative (TAHI) has been working in this area for 6 years.

    • Trials, Market surveys and Industry WGs

    • Developed TAHI Open Architecture concept (used in TEAHA, MonAMI projects)

  • TAHI is working on an Interoperability Framework Standard project with an initial draft specification to be issued by the end of this year

  • Supported by an Interoperability Framework Initiative

  • Then standardised by CENELEC Workshop Agreement

  • TAHI Membership ensures access and input to the Initiative



  • To turn the TAHI Open Architecture Framework into a BSI led CENELEC Interoperability Framework Standard for Europe by start of 2009

  • Use a CENELEC Workshop Agreement fast track process to gain widespread consensus

  • Unlock the potential for smart technology to deliver significant market growth, energy savings and social benefits in the home within 5 years

About tahi

About TAHI

Mission – “to accelerate the adoption of products and services by connected home-based users”

Not for profit organisation owned by its members

2 Save Energy - The OWL, All Island Power Limited, BRE, BT, University of Bristol, CABA, DeMontfort University, Digital Living Limited, BERR, Department of Health, Ember Europe, Echelon Europe, EDF Energy, English Partnerships, Ewgeco, Green Energy Options, Horstmann Controls Limited, IBM United Kingdom Limited, Ingenium SA, Irridium Limited, Kinberry Limited, Landis+Gyr - Ampy, London Borough of Newham, MiniFlex Limited, NEA (National Energy Action), Npower, PowerGen, PRI Limited, OpenHub Limited, Renesas Technology Europe Ltd, Telemetry Associates, Tridium Europe Limited, Trilliant Inc.

Industry Sector Groups – Energy, Health, Sustainability, Building

Technology and Interoperability Group – (TAHI Open Architecture -> Interoperability Framework Initiative)

Information at www.theapplicationhome.com

Thank you for your attention

Thank you for your attention

Stephen Pattenden


TAHI – http://www.theapplicationhome.com/

TAHI Forum – BT Tower London


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