An Improved Trust based Energy Efficient Routing Protocol for Wireless Sensor Networks

Wireless Sensor Networks (WSNs) is emerged as a promising technology in wireless networks and is considered as an effective research area because of its wide scope of applications in networking. Wireless Sensor Networks are a form of self-organizing networks with limited energy and communication ability. The limited power batteries in sensor nodes, it is very difficult and expensive to extend network lifetime for wireless sensor networks. It is one of the main essential issues in WSNs is to use an energy efficient routing protocol to extend the network lifetime. In this paper, we propose an Improved Trust based Energy Efficient Routing Protocol (ITEERP) which includes energy efficiency in the network and trust is ensured in routing with minimal delay. The ITEERP is used for finding the optimal trusted path between the source and destination by using the weighted trust value of individual sensor node and cluster head. The periodic end-to-end trust evaluation is done between two SNs and between two CHs. Each SN is responsible to report its trust evaluation to other neighbor SNs, in the same cluster to its CH. An achieves a reliable secured data transmission in WSNs and also extends the network lifetime of a network.