Data transmission method and device

The invention provides a data transmission method and device, relates to the technical field of communication, and the technical scheme is used for enabling data frames needing to be synchronously transmitted to quickly complete delay alignment in the transmission process and ensuring synchronous transmission of the data frames. The method comprises the following steps: a source node transmits a first data frame to a first node through a first transmission channel, and transmits a second data frame to the first node through a second transmission channel. Wherein the first node is a downstream node of the source node. The first data frame comprises a first identifier, and the second data frame comprises a second identifier. The first identifier corresponds to the second identifier and is used for indicating the first node to perform delay alignment on the first data frame and the second data frame. 本申请提供一种数据传输方法及装置，涉及通信技术领域，该技术方案用于使需要同步传输的数据帧在传输过程中快速完成延迟对齐，保证数据帧的同步传输。该方法包括：源节点通过第一传输通道向第一节点传输第一数据帧，通过第二传输通道向第一节点