Optimization of Multipath Transmission Path Scheduling Based on Forward Delay in Vehicle Heterogeneous Networks

Multipath transmission has been widely used in vehicle heterogeneous networks. The diversity of interfaces will lead to differences in the characteristics of transmission paths. Different paths also have differences in parameters such as bandwidth and delay. Out of order will result in greatly reduced multipath transmission performance. In this paper, we propose a sustainable forward-delay-based multipath transmission path scheduling method for vehicular heterogeneous networks so as to solve the multipath transmission problem. The main idea of this method is to schedule data packets through the concurrent path according to the forward delay and throughput difference estimated by the sender. We conduct the simulation in NS-3. Simulation results show that, compared with the previous algorithm, our proposed algorithm can significantly reduce the out-of-order problem of data packets at the receiver. This algorithm improves overall system throughput and network utilization. In this way, sustainable path propagation is guaranteed.