Abstract: “Environment created by mobile ad hoc networks (MANETs) emerges as miscellany of wireless nodes which forms a network for a short span without any assistance of centralized infrastructure. As the scenario is not fixed, nodes rely upon battery, which depletes with time. This arise the dilemma of energy as a constraint in MANETs. This paper confers on the approaches configured for minimizing the use of energy in such condition. Various techniques taken into account are transmission power control, load distribution, power management, sleep mode. The ultimate application of natural engineering to combat energy consumption is an addition to such schemes. Further, each area is described by corresponding recent algorithms which tend to portray a clear picture of their usage.”

Keywords: energy efficiency, energy aware algorithms, mobile ad hoc networks, power saving technique