软件定义的网络授时方案研究

Network timing provides time information for systems and applications through network, and the requirements for network timing in many industries and applications are constantly increasing.In order to solve the problems of limited time accuracy, inflexible network structure, and high equipment cost in traditional network timing schemes, this paper proposes a network timing scheme that separates time transfer and compensation from the idea of software-defined networks.The network controller and time controller in the architecture obtain the time information of the nodes and links in the network and calculate the asymmetric round-trip delay to compensate the slave clock. It proves that the scheme can effectively improve the timing accuracy.