International Journal of Engineering and Innovative Technology (IJEIT)
Wireless Sensor Networks (WSNs) is a distributed real time system. It plays an important role in today's research area also provides several advantages over networks. There are various challenges in WSNs i.e. energy consumption, communication between the nodes, scalability, utilization of sensors, large scale co-ordination and so on. Many researches take place to overcome such limitations. Various protocols and algorithms are existing and also some are proposed for efficient routing in Wireless sensor network. The protocols are classified on the basis of location, mobility, Quality Of Service (QOS), multipath and heterogeneity and so on.