Analysis of robustness in heterogeneous ad hoc networks

This paper studies an original approach to combine route and path recovery process in heterogeneous ad hoc networks (Zigbee and WiFi technologies) in order to increase the ad hoc network robustness. It proposes multi-redundancy architecture based on IEEE and IEFT protocols, which is able to manage the fault detection on primary communication path and then to switch to an alternate path in case of failure. The three recovery policies (link-to-link, end-to-end path and segment path) are studied and compared through an analytical approach. Evaluation shows the segment recovery interest, and the advantage to monitor the primary path at routing level by multipath routing protocol rather than to monitor it at transport level by transport protocol.