Energy Conscious Packet Transmission in Wireless Networks Using Trust Based Mechanism: A Cognitive Approach

The self-motivated nature of wireless ad-hoc networks deters the possibility of a centralized solution. Also, no specific node can act as a centralized point due to energy and processing constraints. Constraint of non-centralization demands efficient and effective transmission of data between nodes by sharing information whenever needed without any disruption. This co-operation is a prodigious challenge due to the presence of covetous and malicious nodes in the network. Hence, an asserted need of some lightweight trust based mechanism in differentiating among reliable and unreliable nodes arises. This mechanism enhances security and improve co-operation in nodes. Energy efficiency remains central to the above segregation. Many trust-based methods are proposed which use packet delivered ratio as the major parameter for direct trust calculation. This work presents investigation of other related parameters like routing overhead, energy level etc. which can increase the effectiveness of trust based mechanisms for early detection of malicious nodes along with packet delivered ratio. Furthermore, an ameliorated energy optimization model is proposed for wireless network.