dynamicly build a mesh tree

[ran greenberg]

hi. i am working on a project that needs to create a mesh network dynamically. it means that the root node starts then an end node starts and they connect. now the  end nodes starts to be mobile and moves away from the root node. i would like to start new nodes each time the end node is 50 meter further. when i start the new nodes i see that they are added at the save level as the root node. at a certain point the root node is lost and most of the time not added as a sub to one of the added nodes. i would like to ask if there is a way to force creating a new tree node  of if there is any other method that when losing the root node it will be found with the nodes that are dynamically added .