NRSSI: New proposed RSSI method for the distance measurement in WSNs

RSSI method is used to measure the distance between beacon nodes and unknown node. This technique is not more relevant because the radio frequency (RF) signals are mostly affected with the noise available in the environment. Therefore, the accurate distance evaluation cannot possible between the known nodes and unknown nodes. RSSI method is having many accuracy challenges which need improvements. Similarly, IRSSI method has also some faults regarding the calculation of model parameter. In this paper, a New Received Signal Strength Indicator (NRSSI) method is proposed. The new proposed RSSI method is achieved with improvement of the parameter values and introduction of the noise factor (or thermal noise). The thermal noise influences the RF signal severely, therefore, it is fused as a part of noise in RSSI method to reduce the measurement error effectively. In this paper, the NRSSI method improves the accuracy of the distance estimation for unknown nodes than RSSI and IRSSI.