Abstract
Maximizing throughput and battery power are the key factors to design an efficient power control MAC protocol. Power management in MANET is a critical issue, since these are powered by batteries. It is also due to mobility of MANETs, the size of batteries is of great concerns. This paper presents a novel power control protocol, namely Power Efficient MAC protocol for mobile ad hoc networks. The PEMAC protocol uses minimum power level to transmit RTS instead of maximum power level. Here the minimum power level is predefined value, and it is noted that it is sufficient to reach the receiver. The receiver transmits CTS by using maximum power level. The data and acknowledgement are transmitted using power level respectively which is calculated according the power level of RTS transmission. This protocol conserves energy as it uses less energy in transmitting RTS packet, and it also increases the spatial reuse in the network. It has been shown through simulation that the proposed protocol is energy efficient without degrading throughput.
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