An Improved AODV Routing Protocol Adaptable to Different Motion Scenarios

Abstract

The invention discloses improved AODV routing protocols adaptive to different motion scenes. The invention is characterized by comprising the steps of (1), performing routing discovery; (2), performing routing selection; (3), performing routing activation; and (4), performing routing maintenance. By means of the improved AODV routing protocols disclosed by the invention, the average relative motion speed of various unmanned aerial vehicles and adjacent unmanned aerial vehicles can be obtained through GPS signals carried by the various unmanned aerial vehicles, so that the change speed of a network topological structure is judged; different routing protocols are selected by judging the change speed of the network topological structure; namely, different improved AODV routing protocols are selected according to the average relative motion speeds of the unmanned aerial vehicles; the improved AODV routing protocols can be adaptive to the converted topological structures of the unmanned aerial vehicles; therefore, the network bandwidth is reduced; the end-to-end delay is reduced; and the packet loss ratio is reduced.

Description

technical field [0001] The invention belongs to the field of Ad Hoc networks, and specifically refers to an improved AODV routing protocol that can adapt to different sports scenes. Background technique [0002] Drones are the perfect choice for dull, harsh or dangerous missions. After decades of development, drones are relatively mature from a technical point of view. Its advantages are low cost, easy maneuverability, and high flexibility. It can carry some important equipment to complete special tasks from the air, such as air monitoring, air surveillance, air relay, air shouting, emergency rescue, etc. When performing special tasks, it generally does not cause casualties, has strong survivability, good maneuverability, and is easy to use. [0003] Due to the influence of factors such as sensor line-of-sight occlusion and flight airspace restrictions, a single UAV is usually not enough to achieve continuous surveillance of a large area, and multiple UAVs are required to ...

AI Technical Summary

Problems solved by technology

[0013] In the Ad Hoc network, the frequent movement of nodes leads to frequent changes in the network topology, and the original AODV route from the source node to the destination node is in danger of breaking at any time

Link breaks will lead to a large number of Hello messages in the route maintenance phase and a large number of route reconstruction processes when the initial AODV routing protocol is adopted. During the completion of route reconstruction, network topology changes may cause some If one link is broken and cannot be used, it will greatly increase the end-to-end delay, increase the packet loss rate, and easily cause network congestion

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