Abstract
In Vehicular Ad Hoc Network (VANET), the route between a source node and a destination node is intermittently broken. It is difficult to provide the reliable data transfer based on TCP because TCP is not adaptable to such networks such as VANET. Therefore, this paper proposes an end-to-end transfer rate adjustment mechanism in the application layer for VANET. The proposed mechanism consists of three functions: the transfer rate adjustment, the retransmission control, and the user priority decision. In order to realize the proposed mechanism, we introduce the improved AODV as a routing layer and UDP as a transport layer. Then, we confirmed that the proposed three functions work well in the conditions that the route breaks occur intermittently through simulation experiments. As a result, it is shown that the proposed mechanism is effective for VANET because of three functions with respect to the intermittent disconnection.
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