The invention relates to a CSMA/CA rollback method suitable for unmanned aerial vehicle auxiliary data acquisition, and belongs to the field of unmanned aerial vehicle auxiliary wireless communication, and the method comprises the following steps: S1, in the transmission range of an unmanned aerial vehicle, a single ground node calculates the maximum window length of the ground node in the coverage range of the unmanned aerial vehicle according to received beacon frame information; s2, a single node calculates the priority of the node at the current moment according to the data volume to be uploaded and the maximum window length of the node; s3, the nodes upload priority parameters along with the control frames, the unmanned aerial vehicle obtains the priority parameters of the nodes, the mean value and the variance of the priority parameters are obtained and returned to the ground nodes at a certain frequency, and the ground nodes calculate the initial rollback values of the ground nodes according to feedback results. The resource utilization rate is improved, and the system throughput is improved.

    本发明涉及一种适用于无人机辅助数据采集的CSMA/CA回退方法,属于无人机辅助无线通信领域,包括以下步骤:S1:在无人机传输范围内,单个地面节点根据接收到的信标帧信息,计算其处于无人机覆盖范围内的最大窗口长度;S2:单个节点根据自身待上传的数据量和最大窗口长度,计算其在当前时刻的优先级;S3:各节点随控制帧上传优先级参数,无人机获取各节点的优先级参数,得到优先级参数的均值和方差,并以一定的频率返回给地面节点,地面节点通过反馈结果,计算自己的初始回退值。本发明提高了资源利用率,提升了系统吞吐量。


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    Title :

    CSMA/CA rollback method suitable for auxiliary data acquisition of unmanned aerial vehicle


    Additional title:

    一种适用于无人机辅助数据采集的CSMA/CA回退方法


    Contributors:
    LI MIN (author) / LIU DAOWEN (author) / WANG HENG (author)

    Publication date :

    2024-05-24


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    H04W WIRELESS COMMUNICATION NETWORKS , Drahtlose Kommunikationsnetze / G08G Anlagen zur Steuerung, Regelung oder Überwachung des Verkehrs , TRAFFIC CONTROL SYSTEMS



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