if logical addressing is not used in the network the destination address may be a random id the source node id has the same definition as the source node id in the x hello message 410 the load field currently contains the number of children of the sending node and the number of neighbors of the sending node this parameter can be used for load balancing for the broadcast z confirm message 440 the source address is the same as for y message the load field is the same as for z message for the w message 1525 the source address is the same as for y message the load field is the same as for z message each fixed node of the fixed wireless nodes of the network maintains a simple routing table containing the fixed node 39 s range the fixed node 39 s depth its parent and the fixed node 39 s load parameter shortest path routing is not performed by any fixed node of the fixed wireless nodes n 1 n 2 n n mobile wireless nodes may exist in the network 100 but fixed nodes perform message routing messages from a source node to a destination node within network 100 can travel through the network 100 from the source node to root node n r 350 then down to reach the destination node in several ways referring now to fig1 a spanning tree logical backbone hierarchy 1600 is shown in which source node 1610 and destination node 1620 are labeled note that destination node 1620 is not in the upstream path a message 1630 from source node 1610 sent to destination node 1620 is transferred.