Abstract: The application areas of sensor network are diverse in nature, varying from heath monitoring, habitat monitoring, and industrial computing system. They are usually deployed where there is no human intervention. Example, in habitat monitoring the intervention on human may disturb the lifestyle of animals monitored, resulting in wrong interpretation of data. The sensors are battery operated and there is a need for efficient utilization of the resource. The battery utilization can vary with respect to application, network configuration, node deployment or routing algorithm considered. In this paper we do a survey of various routing techniques which aims at increasing the network lifetime by efficiently utilizing the battery resource.
Keywords: Wireless Sensor network, cluster, Tree based, Issues, Recommendation.