Page 211 - Trust in ICT 2017

Trust in ICT 3

1.2 Actors

– User: user who are able to control home appliance with terminal devices (e.g., laptop, smartphone,
etc.).

– Home Appliance: various appliances from multiple vendors.
– Home Gateway: a device installed in the user’s home and receives remote control commands from
the management server.

– Service Platform: a service platform is in charge of providing services/common functionalities for
applications to user.

1.3 Detailed service flow

Figure IV.2: Smart home service flow

Detailed Flow Description
1) A user subscribes to a smart home service.

2) Data from multiple devices such as home appliances (smart meters, electric lightening, fridge,
washing machine etc.) is collected. Data may include status of door lock, temperature, level of
energy consumption and others.
3) Collected data is stored in the service platform and may be processed at home gateway. Based on
polices, the home gateway sends control messages to devices.
4) Collected data may also be sent to service provider which contains the service platform for storage
via communication network.
5) Notified information is available for processing. A service provider can process the information
before sending to a user depending on subscription profile.
6) A user reacts to the shared /collected information and can send control message (e.g., to switch a
home device such as light /appliance or washing machine).
7) Control is propagated back through different operator to appropriate home appliances(s).

1.4 Trust matrix

Trust matrix presents trust relationship among actors in this use case.

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