CAJ | 학술논문

为了改善无人机数据链(unmanned aerial vehicle data link,UAV-DL)的吞吐量和平均时延,结合UAV的Markov飞行状态、Gilbert-Elliot信道模型和不同分组网络的优先级,提出了一种基于Gilbert-Elliot信道的UAV数据链多链路轮询策略.该策略以链路信道状态和不同分组网络的优先级为轮询的最优目标,首先,依据轮询的最优目标完成信息的传输,然后,依据排队过程的概率母函数和基本的排队原理分析了UAV数据链多链路轮询机制的性能.最后通过Opnet仿真了该策略组网条件下的平均时延和吞吐量,结果表明:与其典型的两种轮询方式相比,该方案的平均时延削减了至少30％,组网的吞吐量增加了1.3倍.
위료개선무인궤수거련(unmanned aerial vehicle data link,UAV-DL)적탄토량화평균시연,결합UAV적Markov비행상태、Gilbert-Elliot신도모형화불동분조망락적우선급,제출료일충기우Gilbert-Elliot신도적UAV수거련다련로륜순책략.해책략이련로신도상태화불동분조망락적우선급위륜순적최우목표,수선,의거륜순적최우목표완성신식적전수,연후,의거배대과정적개솔모함수화기본적배대원리분석료UAV수거련다련로륜순궤제적성능.최후통과Opnet방진료해책략조망조건하적평균시연화탄토량,결과표명:여기전형적량충륜순방식상비,해방안적평균시연삭감료지소30％,조망적탄토량증가료1.3배.
In order to improve the throughput and reduce the average delay for UAV-DL ( unmanned aerial vehicle data link ),a new multi-link cooperative polling scheme is proposed based on the Markov chain of flight condition for UAV-DL,Gilbert-Elliot channel model and different priorities for multi-link network.The channel state and different priorities are op timal for the multi-link cooperative polling scheme.The data is transmitted according to its channel state and priority.And then the average delay and throughput of multi-link cooperative polling model for UAV-DL are analyzed and simulated based on the probability generating function and the queuing theory.Simulation results show that the average delay is shortened by 30％ and the throughput is increased 1.3 times than other ways in simulation.