January 2018
Intermediate to advanced
524 pages
13h 33m
English
Content preview from Internet of Things for Architects
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Neighbor discovery
Neighbor discovery (ND) in thread decides which 802.15.4 network to join. The process is as follows:
- Joining device contacts router for commissioning.
- Joining device scans all channels and issues a beacon request on each channel. Waits for beacon response.
- If a beacon containing the payload with the network Service Set Identifier (SSID) and permit-joining message is seen, the device will now join the Thread network.
- Once a device is discovered, MLE messages will be broadcast to identify a neighbor router to the device. That router will perform commissioning. There are two commissioning modes:
- Configuring: Uses an out-of-band method to commission a device. Allows for a device to attach to the Thread network as soon as ...
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