PREVENTION METHOD OF FALSE REPORT GENERATION IN CLUSTER HEADS FOR DYNAMIC EN-ROUTE FILTERING OF WIRELESS SENSOR NETWORKS

Wireless sensor networks collect data through collaborative communication between sensor nodes. sensor nodes  of  wireless  sensor  networks  are  deployed  in  open  environments.  Hence,  an  attacker  can  easily compromise  the  node.  An  attacker  can  compromise  a  node  to  generate  false  reports  and  inject  into  the network. This causes unnecessary energy consumption in the process of transmitting false alarm messages and  false  data  reports  to  the  system.  If  the  attacker  keeps  repeatedly  attacking  thereby  causing  problems such  as  reduction  in  the  entire  network  life  or  disabling  the  networks.  Yu  and  Guan  proposed  a  dynamic en-route filtering scheme to detect and drop these false reports before reaching to the Base station. In the dynamic en-route filtering, the  energy waste of the intermediate nodes  occurs until  it  is  detected  early.  In
this  paper,  we  propose  a  method  to  save  the  energy  of  the  intermediate  nodes  by  searching  for  the compromised  node  and  blocking  the  reports  generated  at  that  node.  When  verifying  a  false  report  at  the
verification node, it can know report information. The base station is able to find the cluster of compromised  nodes  using  that  information.  In  particular,  the  base  station  can  know  the  location  of  the node  that  has  been  compromised,  we  can  block  false  alarms  and  energy  losses  by  blocking  reports
generated in that cluster.