低空多无人机自组网数据可靠传输的跨层方法

发布时间：2019-06-26 14:10

【摘要】：低空多无人机自组织网络由于数据传输容易被地形或建筑物等遮挡,通信中断时有发生,同时传统拥塞处理体系已不能满足无人机间通信的质量要求。针对以上问题,提出一种数据可靠传输的跨层方法。运用该方法在物理层根据信道条件得出3种通信方式的中断概率,在MAC层根据数据包进入缓存队列时间,进行拥塞等级划分,在传输层根据拥塞情况控制滑动窗口大小,自适应控制源无人机的数据发送速率,在网络层以中断概率与拥塞值的联合权重为依据,提供数据可靠传输的路由选择。仿真结果表明,与移动自组网拥塞感知路由协议、动态拥塞感知路由协议相比,该方法有效降低了中断概率,并随着数据发送速率以及无人机速度的增加,可获得更低的平均时延和较高的投递成功率。
[Abstract]:The self-organizing network of the low-altitude and multi-unmanned aerial vehicle is easy to be blocked by the terrain or the building and the like due to the data transmission, and the communication is interrupted from time to time, and meanwhile, the traditional congestion processing system can not meet the quality requirement of the communication between the unmanned aerial vehicles. In view of the above problems, a cross-layer method for reliable data transmission is proposed. the method comprises the following steps: using the method to obtain the interruption probability of three communication modes according to the channel condition in the physical layer, and performing congestion level division on the MAC layer according to the time of the data packet entering the cache queue, and controlling the size of the sliding window according to the congestion condition of the transport layer, The data transmission rate of the adaptive control source unmanned aerial vehicle is based on the joint weight of the interruption probability and the congestion value in the network layer, and provides a route selection for reliable transmission of the data. The simulation results show that compared with the mobile ad-hoc network congestion-aware routing protocol and the dynamic congestion-aware routing protocol, the method effectively reduces the interrupt probability and can obtain lower average time delay and higher delivery success rate as the data transmission rate and the speed of the unmanned aerial vehicle are increased.
【作者单位】：空军工程大学航空航天工程学院;
【基金】：航空科学基金(20130596008)
【分类号】：V279;TN915.0

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