Effect of MAC layer protocol in building trust and reputation scheme in mobile ad hoc network

In Wireless network, routing misbehavior is analyzed and trust calculation based on them is formulated. Our study is based on MAC layer misbehavior and how we can incorporate a scheme based on MACA for Wireless LANs (MACAW) and Power-Aware Medium Access Control with Signaling (PAMAS). We emphasized on data structure used for maintaining trust and energy consumed in exchanging the trust value. In case of MACAW, the acknowledgement received increases or maintains the trust value. In case of PAMAS, the trust of neighboring nodes is considered. We found that our scheme takes T_R/T_R+T, where T_R is transmission energy and T for computing trust. Since T<;<;T_R, the energy is only used in transmission.

I. Introduction

Trust and reputation has been used widely in the sociology or human science. The whole ecology is based on the trust. Wireless communication is insecure as it uses air to transmit data. For secure transmission trust and reputation based scheme can be deployed. Reputation is the value(social) of an entity that is built over time. Trust, is the measure of expectation of one entity about the actions of another. In CSMA-based schemes for wireless network, there is a problem of hidden and exposed terminal. In contention-free schemes such as Time Division Multiple Access [TDMA], Frequency Division Multiple Access [FDMA], and Code Division Multiple Access [CDMA]), mechanisms are used to avoid contentions. Contention-based schemes, already know the risk of collisions of transmitted data. Contention-free MAC schemes are more applicable to static networks or networks with centralized control. Our research focuses on contention-based MAC schemes.