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Improved AODV routing protocols adaptive to different motion scenes

A routing protocol, adapting to different technologies, applied in the field of AdHoc network, it can solve the problems of increasing packet loss rate, link breakage, and increasing end-to-end delay, so as to reduce packet loss rate, reduce bandwidth, and reduce end-to-end time. delayed effect

Active Publication Date: 2017-08-18
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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  • Abstract
  • Description
  • Claims
  • Application Information

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

Method used

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Embodiment Construction

[0040] The present invention provides an improved AODV routing protocol that can adapt to different sports scenes. In order to make the purpose, technical solution and effect of the present invention clearer and clearer, the present invention is further described in detail with reference to the accompanying drawings and examples. It should be pointed out that the specific implementations described here are only used to explain the present invention, not to limit the present invention.

[0041] Step 1) route discovery phase:

[0042] Such as figure 2 As shown, when the source node sends a RREQ packet to find an effective route, a reverse route from the destination node to the source node is generated, and when the destination node sends an RREP packet to the source node, a forward route from the source node to the destination node is generated.

[0043] When the source node has communication needs, it first checks whether there is an effective route to the destination node in...

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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 ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W40/14H04W40/22H04W40/24
CPCH04W40/14H04W40/22H04W40/246H04W40/248
Inventor 钟家跃王从庆贾峰谢勇吴林峰
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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