| Cooperative communication is a promising technique to improve the efficiency of wireless communication networks. To mitigate the security issues raised by cooperative communication, trust management is essential to monitor the behaviour of the entities. In this thesis, the focus is on trust establishment for relay nodes and, applying the trust values in the cross-layer design of cooperative relaying networks. Insufficiencies of conventional Bayesian methodology for cooperative communication is shown. Then, it is modified by incorporating the relay selection policy and wireless channel conditions among the network nodes. Furthermore, the relay selection in cooperative relaying networks will be the focus where a throughput optimal trust-based relay selection policy is devised which stabilizes the system for all the arrival rate vectors in the stability region. In the thesis it is proved that the proposed policy is optimal through analysis. Finally, the comparison of its performance with four other sub-optimal policies is provided. |
