January 2018
Intermediate to advanced
524 pages
13h 33m
English
Content preview from Internet of Things for Architects
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IEEE 802.15.4 topology
There are two fundamental device types in IEEE 802.15.4:
- Full function device (FFD): Supports any network topology, can be a network (PAN) coordinator and can communicate to any device PAN coordinator
- Reduced function device (RFD): Limited to only a star topology, cannot perform as a network coordinator, can only communicate with a network coordinator
The star topology is the simplest but requires all messages between peer nodes to travel through the PAN coordinator for routing. A peer-to-peer topology is a typical mesh and can communicate directly with neighbor nodes. To build more complicated networks and topologies is the duty of the higher level protocols, which we will discuss in the Zigbee section.
The PAN ...
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