Software Structure used in Home Area Networks
Once the cables (or radio links) are in place in a home area network, applications speak to each other. This communication is possible thanks to protocols and standards put in place with the aim of improving inter-operability of devices, and the integration of applications.
5.1. Characteristics of Home Area Networks
– a home area network for multimedia applications;
– a home area network to interconnect home equipment: machine to machine;
– a network which operates the gateway with the Internet world and provides a management interface, with adequate access controls.
Protocols and standards, from the physical layer to the application layer, exist to guarantee inter-operability and easy application over a large range of devices commercially available.
Several standards exist, since the requirements of multimedia services and home systems services are different:
– multimedia devices need to exchange and control images, video, audio;
– home systems equipment synchronize with each other, sharing resources and offering machine to machine services;
– like multimedia devices, home systems equipment extend their services with service providers (through a service gateway).
In order to offer subscriptions to the general public and fully provide these services, home systems networks must respect a certain number of restrictions. In particular, ...