Now-a-days, Wireless Sensor Networks (WSNs) play a vital role to improve the communication. Here the node localization is one of the basic problems in wireless sensor networks. Because the RF signal is affected by the environmental factors such as fading, path loss, multipath component and etc. Due to these factors the transmitted data are lost. In some application, the authors generally prefer accurate data transmission. To achieve this, they measure the RSSI between the distant nodes.