MCTB-GPSR: aeronautical ad hoc networks movement change triggers beacon routing based on GPSR

The Aeronautical Ad Hoc Network (AANET) serves as a novel solution to alleviate the resource constraints in civil aviation communication systems significantly. However, due to the characteristics of civil aviation, such as large network scale, rapid topological changes, sparse node distribution, and unstable channels, existing ad hoc network routing protocols cannot be directly applied. In this study, we propose the Movement Change Triggers Beacon Routing based on GPSR (MCTB-GPSR). This method employs the detection of node movement state changes to trigger beacon sending for maintaining the neighbor table, replacing the conventional GPSR mechanism of fixed time interval beacon sending. Simulation experiments reveal that compared with GPSR, the proposed MCTB-GPSR packet delivery ratio is improved by 2.2%, End-to-End Delay is reduced by 0.12 s, and routing overhead is reduced by 9 kb/s.