International Journal of Modern Engineering Research (IJMER)
Mobile Ad hoc NETworks (MANETs) is a collection of multi-hop wireless mobile nodes that communicate with each other without centralized control or established infrastructure. The energy efficient routing may be the most important design criteria for MANETs, since mobile nodes will be powered by batteries with limited capacity and the nodes in MANET are mobile. Energy efficiency doesn't mean only the less power consumption, it means increasing the time duration in which any network maintains certain performance level. So, power management becomes critical issue. The paper focuses on recent development and modifications in this widely used field and proposed energy saving algorithms, the conventional protocols and also how these are modified to make these protocols energy efficient.