Algorithm 4: The proposed modified protocol: MPH-M.

for each node i do  Node i turns on;  $Discovery.time=0$;  SEND HELLO packet;  RECEIVE ACK packet;  Detection testing algorithm (Algorithm 2);  if $Discovery.time\%10==0$ then   if Node i does not have this route then    Route discovery;    SEND HELLO packet;    RECEIVE ACK packet;   else    DO nothing;   end if  end if  if TRAFFIC packet then   if Node i does not have this route then    SEND TRAFFIC packet to its parents;   else    SEND TRAFFIC packet to specific parent;   end if  end if  if a CONTROL packet is received from Node j then   REMOVE Node j from neighbor table;  else   DO nothing;  end if  $Discovery.time++$; end for