摘要
随着航空技术的飞速发展,航空电子全双工交换以太网(AFDX)取代了传统航电传输总线标准,成为新一代机载设备网络。针对目前航电网络的带宽资源分配不均的问题,提出了一种基于度中心性理论的AFDX网络拓扑优化算法,并依据某型号真实网络拓扑中终端之间的虚拟链路关系对其进行了仿真和实验。通过将带宽资源占用率较高的终端调整至一个交换机,使目标交换机级联带宽降低了11.7%和9.72%;并通过基于OPNET的全数字仿真平台对本算法进行了仿真验证,全网交换机带宽占用率均有不同程度的降低。结果表明,上述方法能够对网络拓扑架构进行优化,不仅能够解决飞机网络局部带宽分配不足的问题,同时能够优化网络性能,具有重要的工程实践意义。
With the rapid development of aviation technology,avionics full-duplex switched Ethernet(AFDX)has replaced the traditional avionics transmission bus standard and has become a new generation of airborne equipment networks.Aiming at the problem of uneven distribution of bandwidth resources in the current avionics network,this paper proposes an AFDX network topology optimization algorithm based on the degree centrality theory,and the simulation and experiment are carried out according to the virtual link relationship between terminals in a real network topology.By adjusting the terminal with high bandwidth resource occupancy rate to a switch,the cascade bandwidth of the target switch is reduced by 11.7%and 9.72%;and the algorithm is simulated and verified through the full digital simulation platform based on OPNET,and the bandwidth occupancy of the whole network switch is reduced to varying degrees.The results show that the method can optimize the network topology,not only can solve the problem of insufficient local bandwidth allocation of aircraft network,but also can optimize the network performance,which has important engineering practical significance.
作者
王昕楠
任艳丽
宋智
赵净净
WANG Xin-nan;REN Yan-li;SONG Zhi;ZHAO Jing-jing(School of Communication and Information Engineering,Shanghai University,Shanghai 200444,China;COMAC Shanghai Aircraft Design and Research Institute,Shanghai 201210,China)
出处
《计算机仿真》
2024年第4期363-367,372,共6页
Computer Simulation
基金
国家自然科学基金(62072295)
上海市自然科学基金(20ZR1419700,22ZR1481000)。
