Research On Routing Incentive Strategy Based On Virtual Credit In VANET

VANET is the application of traditional mobile Ad hoc network on traffic roads,which is a special mobile Ad hoc network.In recent years,a lot of research work has been done on the VANET,but most of these studies fail to consider the selfishness of vehicle nodes in the VANET.However,each vehicle node in VANET has its own private property in practice.When the vehicle nodes belong to different owners,there is no inherent guarantee for their cooperation.Rational vehicle nodes are more willing to take actions to maximize their own interests rather than fully comply with the agreement.Therefore,it is necessary to motivate vehicle nodes to overcome selfish tendencies to cooperate.This thesis introduces the interest package and data packet transmission method of CCN and proposes a routing incentive strategy based on virtual credit.First,the system model is established for the proposed incentive strategy,and then introduces the implementation process of the incentive strategy CDI based on virtual credit in detail.The specific content includes four stages: system initialization stage,routing discovery stage,data transmission stage and virtual credit clearing stage.In the virtual credit clearing stage,according to the different types of interest packets and data packets and the size of data transmission,different reward schemes are adopted for the vehicle node requesting resource,the vehicle node participating in relay forwarding and the vehicle node with resources.Then,the VANET message transmission security mechanism is proposed,including the network initialization phase,the vehicle node communication phase and the CDI virtual credit clearing security policy.And the analysis proves that this scheme can effectively avoid the removal of vehicle node attacks and tampering content attacks.Finally,the simulation experiment analysis of the CDI incentive strategy is carried out.It proves the effectiveness of the incentive strategy.