LTE网络测试仪——高速IP数据采集卡的设计与实现

针对LTE网络高速、海量数据的采集需求,以及现有LTE网络的IP数据采集卡的不足的问题,设计了一种多端口的千兆线速IP数据采集卡。介绍了模块化的FPGA硬件设计,给出了数据采集卡WDM驱动程序框架,提出了一种基于Windows操作系统的数据零拷贝实现方法,有效减少短包中断压力。测试应用表明,该IP数据采集卡具有较好的性能,可以广泛应用于分布式LTE网络的数据采集。

Design and Implementation of High-speed IP Data Acquisition Card For LTE Network Tester

To meet the high-speed mass data acquisition requirements for LTE network,and to solve the deficiency of the existing IP data acquisition card,a multi-port gigabit wire-speed IP data acquisition card is designed.A modular hardware design based on FPGA is introduced.The framework of the WDM-based driver for the data acquisition card is given.An implementation method of zero copy based Windows which can effectively reduce the pressure of short-packet interrupt is proposed.Practical tests and application demonstrated that the IP data acquisition card has better performance,and can be widely used in the work of distributed data acquisition for LTE network.