January 2018
Intermediate to advanced
524 pages
13h 33m
English
Content preview from Internet of Things for Architects
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Sigfox MAC layer
Each device in a Sigfox network has a unique Sigfox ID. The ID is used for the routing and signing of messages. The ID is used to authenticate the Sigfox device. Another characteristic of Sigfox communication is that it uses fire and forget. Messages are not acknowledged by the receiver. Rather, a message is sent three times on three different frequencies at three different times by the node. This assists in ensuring the integrity of transmission of a message. The fire and forget model has no way of ensuring the message was actually received, so it is up to the transmitter to do as much as possible to ensure accurate transmission:
Sigfox MAC frame packet Structure for uplink and downlink
The frames contain a preamble of ...
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