Energy Balancing Algorithm
if node.En decreases to below E_Th, then
 it sends EPR to the root
 it sends EPN to its subtree
end if
If root makes decision to protect node A, then
 flood EPB
 nodes with higher power than A are waken up
𝐴 's children set BPID during EPB flooding
 if A's child B has BPID, then
    B sends EPNR to A
 end if
 if all A's children send EPNR to A, then
  if A is a target node, then
  A detaches with its children
  A keeps working state
  else
    build new paths to targets
     A turns into sleeping state
  end if
end if
Algorithm 1: Process of energy balancing algorithm.