A Survey on Secure Hierarchical Routing Protocols in Wireless Sensor Networks
WSNs usually deployed in the targeted area to monitor or sense the environment and depending upon the application sensor node transmit the data to the base station. To relay the data intermediate nodes communicate together, select appropriate routing path and transmit data towards the base station. Routing path selection depends on the routing protocol of the network. Base station should receive unaltered and fresh data. To fulfill this requirement, routing protocol should be energy-efficient and secure. Hierarchical or cluster-base routing protocol for WSNs is the most energy-efficient among other routing protocols. In this paper, the authors study different hierarchical routing technique for WSNs. Further they analyze and compare secure hierarchical routing protocols based on various criteria.