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Unmanned aerial vehicle channel resource allocation method supporting different QoS

A technology of channel resource and allocation method, applied in the field of unmanned aerial vehicle networking communication, can solve the problems such as the inability to guarantee different QoS requirements of different groups, the unsolved link interruption problem, and the failure to overcome the high mobility of unmanned aerial vehicles, etc. The effect of reducing channel resource loss, high throughput, and improving high reliability

Inactive Publication Date: 2020-12-04
NAT UNIV OF DEFENSE TECH
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  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, although most MAC protocols for UAV networking use directional antennas to improve network performance, they all have the following shortcomings: (1) They do not overcome the high mobility of UAVs, and the problem of link interruption cannot be solved. Solve; (2) Most MAC protocols are based on competition. When the number of nodes is large, contention conflicts will cause serious loss of channel resources; (3) There is no differentiated service, and different QoS requirements for different groups cannot be guaranteed

Method used

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  • Unmanned aerial vehicle channel resource allocation method supporting different QoS
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  • Unmanned aerial vehicle channel resource allocation method supporting different QoS

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Embodiment Construction

[0051] The specific implementation manners of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0052] Such as figure 1 , the present invention provides a communication device that guarantees different QoS, the communication device includes a central UAV and other UAV nodes communicating with it. The communication channel between the UAV and the center is divided into time frames with the same interval in time, and then each time frame is further divided into a control interval (CI: ControlInterval) and a service interval (SI: Service Interval) , so as to provide different QoS services. Such as figure 2 It is a schematic diagram of the composition structure of the time frame. CI controls drone nodes to broadcast security packets, and SI controls drones to transmit service packets point-to-point. The main contents are as follows:

[0053] (1) CI interval, the antenna is set to omnidirectional mode, and all UAV nodes o...

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Abstract

The invention discloses an unmanned aerial vehicle communication channel resource allocation method supporting different QoS (Quality of Service). The method comprises the steps of calculating the number of unmanned aerial vehicles, predicting newly arrived unmanned aerial vehicles, predicting departed unmanned aerial vehicles according to movement, optimizing time frames and the like. According to the channel allocation method, channel resources are allocated according to the service flow requirements of the unmanned aerial vehicles, a bandwidth of a video service is guaranteed, and the method comprises the steps of mobile prediction, flow testing, channel resource allocation for the video service, channel resource allocation for other services and the like. According to the scheme disclosed by the invention, link interruption generated by movement of the unmanned aerial vehicles is avoided so that the reliability of security grouping is improved, and the bandwidth of the video service is guaranteed.

Description

technical field [0001] The invention belongs to the technical field of unmanned aerial vehicle network communication, and in particular relates to the MAC protocol of the unmanned aerial vehicle network. Background technique [0002] In the UAV centralized network, there is a central UAV that can coordinate the communication of all UAVs in the network. This networking method is widely used in multi-UAV applications. Such as UAV sensor network, Sink UAV collects business packets from other UAVs through unicast, which contains video, image or other perception data. In addition, in order to ensure the flight safety of UAVs, each UAV periodically broadcasts safety packets to adjacent UAVs, which contain safety information such as position, speed, and obstacles. Security grouping has higher requirements on delay and reliability, while business grouping requires higher throughput and has a certain tolerance for delay and reliability. [0003] MAC (Media access control) is a key ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W4/40H04W72/04H04W24/02H04B7/185
CPCH04W4/40H04W72/0446H04W24/02H04B7/18504H04W72/27
Inventor 王军毛毅安永旺陈晶王海李媛丽汪晓婧孟祥豪潘建军王红军段永胜王昊张坤峰
Owner NAT UNIV OF DEFENSE TECH
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