Improvement of Throughput Using Partially Node-disjoint Forward and Backward Paths for Mobile Ad Hoc Networks

In general, many protocols with congestion control utilize acknowledgement packets for the notification of network status. In the case of the communication between a source node and a destination node, data packets and acknowledgement packets share the same path. This can cause packet collisions. AODV is one of the most popular routing protocols of this type for Mobile ad hoc networks. In this paper, we propose a new routing method, which alleviates packet collision using distinct paths for data packets and acknowledgement packets. In this method, we introduce subroute management nodes (SMNs) on the path between the source node and the destination node. We propose a new routing method such that two disjoint paths are established between each two adjacent SMNs. Data packets and acknowledgement packets travel along different paths from each other. This results in alleviation of packet collisions. Through simulation experiments, we show the effect of the packet collision alleviation in comparison with AODV at the number of delivered data packets and acknowledgement packets. Keywords-Ad hoc networks; AODV; Partially node-disjoint forward and backward paths;