A data transmission method and device, and relates to the technical field of communication, can provide a suitable LTE U system CSI state feedback mechanism. The method includes: a first device detection second transmission equipment in non authorized carrier data (101); the first device at the start of receiving the second transmission equipment in non authorized carrier data after the first N time resources to the second device transmits the channel state information (102), of which CSI N is a positive integer less than 4. Method and apparatus for data transmission.
【技术实现步骤摘要】
【国外来华专利技术】PCT国内申请,说明书已公开。
【技术保护点】
PCT国内申请,权利要求书已公开。
【技术特征摘要】
【国外来华专利技术】PCT国内申请,...
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