An Efficient Data Dissemination Scheme for the Roadside Parked Vehicles in VANETs

For vehicle nodes are characterized by high mobility,intermittent connectivity,and so on in VANET,an efficient data dissemination scheme for parked vehicles is proposed,the roadside parked vehicles to buffer and perform data dissemination is exploitinged.And also a routing scheme to distribute each data message to roadside parked vehicles is offered,and introduced the pub/sub scheme into the last stage of data dissemination.The theoretical analysis and the simulation results show that the superiority of the data dissemination scheme for parked vehicles,namely,this scheme achieves a higher data delivery ratio at lower network traffic overhead and reasonable delay.