Page 131 - Reference framework for integrated management of an SSC - A U4SSC deliverable on city platforms

o The Knowledge Layer: Offers support for data processing, value incorporation and service
transformation. It receives data from the Acquisition Layer (sensors) and the Interoperability
Layer.
o Interoperability Layer: Facilitates the provision of services, offering open and standardized
interfaces on the Knowledge Layer, establishing security policies and offering connectors
so that external systems can access the Platform and vice versa. It also enables services to
be built from the data of the Platform.
o Service Layer: These are services connected through the Interoperability Layer and the
APIs provided. These applications may be running on the Platform or external services that
publish or consume information.

o Support Layer: This transversal layer supports the rest of the functionalities offering services
such as auditing, monitoring and security.
o Collection systems: Although they are not part of the Platform, they are formed by all the
sensors/actuators managed by a city, for example, traffic lights, park irrigation, citizen devices
(mobiles, etc.), external computer systems, and social networks.

6.3.8.3.1 Acquisition/Interconnection Layer

The Acquisition/Interconnection Layer is responsible for:

• Integrating information from data sources (Capture Systems), which can be:

o From managed sensor networks, sensors, actuators, gateways, and devices such as traffic
lights, buildings and weather stations.
o Different devices such as people's mobile phones or devices in the home environment and
vehicles, from public networks.

o Social networks.

o Other IT systems such as SCADAS or management solutions for vertical domains can be
proprietary solutions.

• Providing the information to the Knowledge Layer regardless of the devices giving a semantic
view of the acquired data, decoupled from the acquisition protocols.
• Independence of the network operator from the provision of network information and from its
control.

Considering the Acquisition Layer of an ideal platform solution should conform to the principles
of the M2M ETSI model:

• Open and standardized interfaces versus proprietary and closed interfaces, on which it will be
possible to develop applications by third parties.

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