Research On Node Cooperation Incentive Mechanism In Wireless Heterogeneous Networks

Cellular ad-hoc wireless heterogeneous networks are the efficient integration of cellular networkand mobile ad-hoc network. The wireless heterogeneous networks have the good reliability ofwireless cellular network and the flexibility of mobile ad-hoc network, then in the wirelessheterogeneous networks, routing discovery and packet forwarding need the cooperation of thenodes.However, considering their own limited resources, some nodes may refuse to forward packets,so the further research of effective node cooperation incentive mechanism is very necessary.Therefore, in this thesis, node cooperation incentive mechanism in wireless heterogeneousnetworks is deeply researched. The major works are as follows:The basic concept, structure and key technologies of wireless heterogeneous networks arebriefly introduced. Then, the thesis analyze the related research situations and the main applicationsof heterogeneous networks. The selfish behavior of nodes in wireless network is introduced. Thenthe research of node cooperation incentive mechanism in wireless networks is summarized.Based on node selfishness in wireless heterogeneous networks, utility model of node game isestablished. By introducing three elements of game theory: the participants, game strategies andutility function, a kind of node incentive mechanism based on non-cooperative game is established.According to the mathematical derivation, the existence of Nash equilibrium of non-cooperationgame is proved and the Nash equilibrium solution is calculated. The simulation results show theeffectiveness of the proposed mechanism. The utility function based on the experience of ideas ofleague game theory is established for balancing traffic of base station in cellular ad-hoc wirelessheterogeneous networks.Based on virtual currency payment-compensation mechanism and actualchannel cost function, the optimization league game model in heterogeneous networks isestablished and the simulation results show the effectiveness of the proposed mechanism.