Efficient Power Utilization of Wireless Sensor Networks: A Survey

Recent advancement in wireless communications and electronics has enabled the development of low-cost & low power sensors networks. The sensor networks can be used for various application areas (e.g., health, military, home). Wireless Sensor Networks are autonomous devices forwarding locally collected data to a so-called sink node along multi-hop wireless paths. The main con-straint is the limited (battery) power. WSN are usually deployed in very harsh environment where node failure occurs frequently. The network should be resilient to node failure and should give long life which is of the order of 1-2 year with single charge. In this paper we have discussed some of the works done for efficient utilization of power in WSNs and some of the protocols , some of the coding and decoding algorithms used for power saving in WSNs has been discussed.