Mobility management in ad hoc networks using routing metrics

In wireless mobile ad hoc networks, routing protocols use metrics to select the best routes. Metrics may reflect the quality of the wireless link and help to manage mobility. But, there is a delay between link quality measurements performed by the routing protocol and their instantaneous values. To compensate this delay, the idea is to anticipate the value of the metric a few seconds in advance. The purpose of this paper is to propose a new technique to compute ETX metric, that is sensitive to mobility and which optimizes throughput at the same time. We show through simulations performed with NS-3 (Network Simulator version 3) that our approach leads to Packet Delivery Ratio (PDR) close to 1 in presence of mobility.