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An Adaptive Discovery Method for Low Altitude Flying Targets

A low-altitude flight and discovery method technology, applied in the field of aeronautical ad hoc networks, can solve the problems of short millimeter wave transmission distance, communication distance influence, attenuation, etc., and achieve the effect of improving neighbor discovery rate and convenient communication establishment method

Active Publication Date: 2022-02-01
BEIHANG (SICHUAN) WESTERN INT INNOVATION PORT TECH CO LTD
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AI Technical Summary

Problems solved by technology

However, the millimeter-wave transmission distance is short and the attenuation is severe under severe weather conditions, and the communication distance will be greatly affected

Method used

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  • An Adaptive Discovery Method for Low Altitude Flying Targets
  • An Adaptive Discovery Method for Low Altitude Flying Targets
  • An Adaptive Discovery Method for Low Altitude Flying Targets

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Experimental program
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specific Embodiment approach

[0173] Specific implementation methods, such as Figure 15 , a flow chart for notifying avoiding nodes and communicating handshake, including:

[0174] Step 1. Node S queries node D;

[0175] Step 2, whether node D is in the two-hop table, if yes, go to step 3, if not, go to step 4;

[0176] Step 3. Within a rotation period T, node S sends HELLO messages in all directions at each sector time;

[0177] Step 4. Find the sector direction of node D;

[0178] Step 5, according to the sector direction and sector time of the avoiding node in the neighbor table, send the sector to be avoided and the maximum time of avoiding to the avoiding node;

[0179] Step 6. According to the sector direction and sector time of node D in the neighbor table, send RTS to node D, node D replies CTS, and the handshake between the two is successful;

[0180] Step 7. After the data transmission is completed, the two restore the previous stable discovery mode.

[0181] In order to describe the commun...

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Abstract

The invention discloses an adaptive discovery method for low-altitude flying targets, which comprises the following steps: the existing nodes of the aeronautical ad hoc network discover surrounding neighbor nodes through neighbor discovery broadcasts. Newly connected nodes use the fast discovery mode; the node enters the stable discovery mode, and if it is an existing node in the network, it has also entered the stable discovery mode; it starts to shake hands with the surrounding nodes to establish communication; the aircraft nodes in the network remain stable Discover the mode, and perform handshake communication according to its own situation, and the networking is completed. An advantage of the present invention is that the neighbor discovery is divided into two different modes. The fast discovery mode allows sectors with many nodes to obtain more time, which improves the neighbor discovery rate. The stable discovery mode improves its own certainty and predictability, making the communication establishment method based on it more convenient, efficient and stable. Save channel resources and improve spatial multiplexing rate.

Description

technical field [0001] The invention relates to the technical field of aeronautical ad hoc networks, in particular to an adaptive discovery method for low-altitude flying targets in aeronautical ad hoc networks. Background technique [0002] The traditional aviation network is mainly aimed at aircraft whose activity areas are medium and high altitude airspace. The traditional aviation network needs to rely on satellites or ground base stations as assistance to meet the communication task requirements between aircraft nodes in the network. And along with the high-speed development of civil aviation industry in recent years, the quantity of low-altitude aircraft and other various low-altitude aircrafts increases rapidly. The rapid increase in the number of low-altitude civil aircraft and the continuous improvement of pilots' demand for aeronautical communication services have led to a rapid increase in the demand for networking in low-altitude airspace in civil aviation networ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04B7/185H04W8/00H04W84/18H04L45/02H04L45/745H04L45/74
CPCH04B7/18506H04W8/005H04W84/18H04L45/02H04L45/026H04L45/745
Inventor 刘凯张学军赖泓吉黄如
Owner BEIHANG (SICHUAN) WESTERN INT INNOVATION PORT TECH CO LTD
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