In this paper, classical control theory and Smith's principle are applied in designing a class of effective andsimple congestion control schemes for high-speed computer communication networks. Mathematical analyse...In this paper, classical control theory and Smith's principle are applied in designing a class of effective andsimple congestion control schemes for high-speed computer communication networks. Mathematical analyses and sim-ulations verify the efficiency of the congestion control schemes. The proposed congestion control laws guarantee fullutilization of network links and stability of network queues so that the network has no data loss in a general networktopology and traffic scenario. The approach has some advantage over the usual Smith's principle based congestioncontrol scheme; it can be applied to those networks that may have smaller bottleneck capacity. Theoretical analysesand simulation results show good performance of networks if implemented by the congestion controllers, which aredesigned on the basis of the improved Smith principle.展开更多
随着天基定位、导航、授时(Position,Navigation and Time,PNT)系统和天地一体化信息网络的建设,利用星间链路实现高速通信和高精度测量,构建天基信息网络和维持天基时空基准,对星间链路的发展提出了更高的要求。激光波束窄,方向性好,...随着天基定位、导航、授时(Position,Navigation and Time,PNT)系统和天地一体化信息网络的建设,利用星间链路实现高速通信和高精度测量,构建天基信息网络和维持天基时空基准,对星间链路的发展提出了更高的要求。激光波束窄,方向性好,抗干扰能力强,可以实现更高的信息传输和更高的测量分辨率。通过激光星间链路的通信测量一体化设计,实现通信与测量功能的高度融合,共用相同的物理信道和信号设计,将会极大地提升系统性能,降低系统复杂性,从而实现载荷的小型化设计,这已成为星间链路的发展趋势。针对通信与测距一体化的需求,文章设计了基于高速通信信号的激光测量通信一体化方案,并对测量性能进行了理论分析;采用激光测量验证系统,对理论分析进行了验证。实验表明,在1Gbit/s的通信速率下,星间测量精度优于1mm,相比于目前微波星间链路测量,精度提升了30倍。展开更多
文摘In this paper, classical control theory and Smith's principle are applied in designing a class of effective andsimple congestion control schemes for high-speed computer communication networks. Mathematical analyses and sim-ulations verify the efficiency of the congestion control schemes. The proposed congestion control laws guarantee fullutilization of network links and stability of network queues so that the network has no data loss in a general networktopology and traffic scenario. The approach has some advantage over the usual Smith's principle based congestioncontrol scheme; it can be applied to those networks that may have smaller bottleneck capacity. Theoretical analysesand simulation results show good performance of networks if implemented by the congestion controllers, which aredesigned on the basis of the improved Smith principle.
文摘随着天基定位、导航、授时(Position,Navigation and Time,PNT)系统和天地一体化信息网络的建设,利用星间链路实现高速通信和高精度测量,构建天基信息网络和维持天基时空基准,对星间链路的发展提出了更高的要求。激光波束窄,方向性好,抗干扰能力强,可以实现更高的信息传输和更高的测量分辨率。通过激光星间链路的通信测量一体化设计,实现通信与测量功能的高度融合,共用相同的物理信道和信号设计,将会极大地提升系统性能,降低系统复杂性,从而实现载荷的小型化设计,这已成为星间链路的发展趋势。针对通信与测距一体化的需求,文章设计了基于高速通信信号的激光测量通信一体化方案,并对测量性能进行了理论分析;采用激光测量验证系统,对理论分析进行了验证。实验表明,在1Gbit/s的通信速率下,星间测量精度优于1mm,相比于目前微波星间链路测量,精度提升了30倍。
