A Data Transmission Solution In Integration System With Acquisition Transmission And Distributed Processing Based On10Gb Ethernet

In many fields such as satellite signal analysis and detection, we need tremendousamount of computational capabilities. While the capability of single computationalunit cannot meet the increasing demands, we usually use several computational unitsto construct a distributed processing platform to enhance the calculation capabilities.The data is transferred based on network. The traditional network data transmissionprotocol cannot perform well in the structure of high speed acquisition-transmission-distributed processing platform. So it is necessary to research a new data transmissionsolution and congestion control algorithm which adapt to this high speed structure.In the platform involved in this paper,10Gb Ethernet controller is implementedwith embedded devices. The operation packing and unpacking data message isrealized by hardware. Then the hardware exchange data with computational units inDMA transmission of PCIE technology. The purpose is to reduce the resourceconsumption. By the way of analyzing data characteristics, we design an efficient datatransmission scheme, and in the foundation of this scheme we research a modifiedHSTCP congestion control algorithm. In this paper, the main research results are asfollows:(1) Combined with the acquisition-transmission-distributed processing platformdesigned in this paper, we put the network transmission data into three categories:acquisition data, control command, processing data. According to the differentcharacteristic of each data, we design a different data transmission mechanism,improve the transmission efficiency and reduce the redundancy data in the link.(2) According to the data transmission scheme designed in this paper, we research acustomized congestion control algorithm based on HSTCP. The customized algorithmimproves the convergence speed and smoothness of the algorithm.We build an acquisition-transmission-distributed processing simulation systemwhich simulates data transmission characteristics in this paper. Then the simulationresults prove that the data transmission mechanism is more efficient and thecustomized congestion control algorithm is better than HSTCP in convergence speedand transmission smoothness. Finally we implement the acquisition-transmission-processing platform based on the reliable hardware. The testing results prove that the data transmission solution designed in this paper perform better than the traditionaldata transmission protocol on the premise of low error rate.