1) The document proposes a data duplicity reduction model for wireless sensor networks to address the problem of duplicate data being received by nodes during communication through multiple nodes.
2) The model works by comparing the data (x(n)) being transmitted by a node to the previously transmitted data using an equality comparator circuit to identify duplicate data. Any duplicate data identified would not be transmitted, reducing energy wasted on transmitting redundant information.
3) Simulation results showed the model was effective at significantly reducing data duplication in wireless sensor networks.