Main Article Content
Wireless Sensor Networks(WSN) are the self-configurable networks which can be used to monitor the external environment like temperature monitoring, pressure sensing, human health monitoring and much more. The monitored data will be forwarded via intermediate sensor nodes and sink nodes to the database server. These networks work in the concept of multi-hop routing in which all the nodes can act as data sensing as well as data relaying. This kind of distributed routing technique will reduce the energy of the sensor nodes in turn will reduce the network lifetime. And this energy consumption is directly proportional to the distance between the sensor nodes and the server. As the sensor nodes transmit in the open medium, these networks are vulnerable to black hole attacks also. In this paper, a list of secured and Load balanced cooperative routing algorithms are reviewed and analysed.