Networking methods DigiMesh networking
XBee® SX 868 RF Module User Guide
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n
Route discovery. Rather than maintaining a network map, routes will be discovered and
created only when needed.
n
Selective acknowledgments. Only the destination node will reply to route requests.
n
Reliable delivery. Reliable delivery of data is accomplished by means of acknowledgments.
n
Sleep modes. Low power sleep modes with synchronized wake are supported with variable
sleep and wake times.
With mesh networking, the distance between two nodes does not matter as long as there are enough
nodes in between to pass the message along. When one node wants to communicate with another,
the network automatically calculates the best path.
A mesh network is also reliable and offers redundancy. For example, If a node can no longer operate
because it has been removed from the network or because a barrier blocks its ability to communicate,
the rest of the nodes can still communicate with each other, either directly or through intermediate
nodes.
Note Mesh networks use more bandwidth for administration and therefore have less available for
payloads.
DigiMesh feature set
DigiMesh contains the following features:
n
Self-healing
Any node may enter or leave the network at any time without causing the network as a whole
to fail.
n
Peer-to-peer architecture
No hierarchy and no parent-child relationships are needed.
n
Quiet protocol
Routing overhead will be reduced by using a reactive protocol similar to AODV.
n
Route discovery
Rather than maintaining a network map, routes will be discovered and created only when
needed.
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