Co-Ordinated Adaptive Power (CAP) Managemet for Wireless Sensor Networks

In order to have energy optimized sensor nodes a low power hardware design is the basic requirement, on that low power device applying sleep scheduling algorithms further energy savings can be achieved. CAP i.e.co-ordinated adaptive power management is a technique which is applied during active periods of the sensor nodes so that energy consumption is further reduced and lifetime can be increased. CAP management is used to save energy consumption of processing unit and communication unit of a sensor node in a co-ordinated manner. Both of these units are dynamically adapted to a particular operating mode that depends on the workload of the node. Co-ordinating computational and communication unit together gives better power optimization by removing the need for multiple hardware interfaces and by having a centralized power management unit. This kind of coordination also reduces the possibility of packet loss due to limited buffer sizes.