- 43 -
fluidity of organization is one of the great strengths of Bluetooth, and the topology of the
piconets is an extension of that fluidity.
Traditional networks, while becoming easier to set up every year, are still generally projects
requiring some amount of effort. Aside from the wiring involved, which was the primary purpose
of the technology, Bluetooth makes networking much simpler because of its ability to create
networks on the fly. Piconets, or Personal Area Networks, are created on the fly when Bluetooth
devices come within range of each other. A piconet consists of a single Master, and the active
and parked Slaves associated with it. Each node in the network communicates on a peer to peer
basis, exchanging information as needed. This seamless networking is now the main thrust of
Bluetooth. In removing wires from devices, simple local networks were created. Instead of a
wire from your computer to your printer, your scanner, your keyboard, your mouse, your
joystick, your network, and your speakers, there is a Master (your PC), and seven active Slaves.
Additionally, a node need not be only one piconet. That printer and scanner, for example, could
be nodes on the piconets of all of the employees around you. When one or more piconets
overlap, an entity known as a scatternet is created. These scatternets allow for data and device
sharing, as each node synchronizes with several Masters, possibly even taking on the role of
Master on one piconet and Slave on another. This extraordinary flexibility of topology allows for
many extremely varied usage models.
Bluetooth Usage Models:
The specification details eight distinct usage models. As more become obvious to the members
of the Bluetooth SIG, they will be added to the spec. The current usage models detailed in the
specification are:
• The Cordless Computer
Comentarios a estos manuales