Wireless sensor networks: a complete review

Wireless Sensor Network (WSN) has attracted many concerns in different domains because of its special features. A WSN is a set of a large number of resource constrained sensor nodes which have abilities for information detection, data processing, and short-range radio communication.WSN can be used for both military applications and civil applications with the tasks such as detection and monitoring of significant events in different environments or large areas. How to improve the reliability of WSN is one of the essential challenges for WSN from theoretical research to actual application. Reliability is the main issue in the Wireless Sensor Networks (WSN). Reliable data transport is an important facet of dependability and quality of service in wireless sensor networks. In this paper, the various techniques proposed for minimizing the energy consumption have been discussed. This is done primarily to give an overview of the various techniques known today for reliable data transport problem and minimizing the energy consumption in wireless sensor