Rank-Based Report Filtering Scheme (RRFS) for Verifying Phoney Reports in Wireless Sensor Networks

Algorithm 4

Group formation.

SN: the set of all nodes in the sensor network-SINK

CH sends the RREQ signal to “” neighbours

: the family in the network

is the node among neighbours to which CH broadcasts

for to do

   RREQ-propagate ()

   relation_propagate ()

    ()

   Node joins the group by sending ACK to corresponding CH

   if

     CH sends RREP

     establish relationship between and CH

   end if

  end for

  Let be the cluster member

  -number assigned for the path of “” member

  // is the selfish key of the cluster

  for to

  end for