A Distributed Relation Detection Approach in the Internet of Things

Figure 4

Automatic depth change in a routing tree (a) object 6 receives “go” message first from object 3 and then object 12; (b) the tree rooted at object 1 merges into the tree rooted at object 7; (c) object 6 is elected as the root of the result tree and the objects in previous two trees reverse their attachment.

(a)

(b)

(c)