Enhanced Transmission Power Control Mechanism based on RSSI for MANET

Today’s power consumption is the critical issue in MANET. Since, we have limited battery power to operate nodes. Due to the lack of power (Energy), the nodes “die out” from the network. Recently, power control in mobile ad hoc networks has been the focus of extensive research. Energy of nodes is consumed according to transmission power required by the radios. In this paper, we develop a mechanism, Enhanced Transmission Power Control Mechanism (ETPCM) that minimizes the required transmission power consumption of radio during packet transmission. In this work, the transmission power is dynamically set according to the distance and the distance can be calculated by using a parameter Receiving Signal Strength Indicator (RSSI) between these nodes. IEEE 802.11b is a standard that specifies the physical layer and media access control designed for low-rate wireless local area networks (WLAN), it is used as radio at PHY layer (PHY802.11b) and protocol at MAC layer (MAC802.11), and it is generally used for MANET.