| Aisle routing is a novel hybrid routing protocol designed for mobile ad hoc networks. Based on reactive source routing, aisle routing introduces a novel route refreshment mechanism, which proactively and adaptively refreshes route paths through an aisle-like area. The refreshment is triggered by the route path state, which is obtained from the physical layer and carried along with data packets. Therefore, aisle routing has a strong capability to keep track of the varying network topology of mobile ad hoc networks. The route refreshment mechanism fundamentally changes the typical route cycle widely used in many reactive routing protocols, which can help the source node find alternative route paths before the current route path turns stale. Additionally, the route refreshment packets are limited within the aisle through the use of the existing route path and neighbor nodes. As a result, the route control overhead is relatively small. Aisle routing combines multiple mechanisms in the routing algorithm, such as source routing, reactive route discovery, proactive and adaptive route refreshment, bidirectional routing between source and destination, and cross-layering for link state. The simulation results demonstrate that aisle routing has excellent performance to deliver data packets even in extremely high mobility environments. |
