User Cooperative Mobility for the High Throughput of Target Flows in Multiple Ad-Hoc Networks

In this paper, we propose a user cooperative mobility method for the high throughput of a specific target flow in dense multiple ad-hoc networks with multiple flows. Our basic idea is that the moving of a node in an ad-hoc network could result in improved performance, such as increased throughput, by avoiding interference and/or useless transmission to the bottleneck node. Distributing Transmission opportunity of Extra flow (DTE) method extends the previously proposed Indirect Method, which accelerates the throughput of a target flow by moving a node close to a source node in a single flow. The DTE method can apply both single and multiple target flows. We analyze which flow has the most effective node to be moved based on network topology. The analysis reveals that selecting the optimal flow and moving the optimal node should greatly improve the throughput. We conducted an NS3 simulation with a typical multiple flow model, the bidirectional flow model. The results show that the throughput of a single target flow was improved by 27.4% with the Direct Method, 13.1 % with the Indirect Method only, and 64.1% with the proposed DTE method when compared with a case with no mobility.