The embodiment of this application provides a data transmission method and device, which relates to the field of communication technology, and can solve the problem of resource waste caused by the large proportion of DMRS symbols in the OFDM symbols included in the subframe. The method includes: network equipment receives upstream data sent by N terminal devices in time division multiplexing time division multiplexing (TDM). Upstream data includes demodulation reference signal DMRS of each terminal device in N terminal devices. N terminal devices share target OFDM symbols, and target OFDM symbols are used to transmit demodulation reference signal DMRS of each terminal device, N>2; network equipment transmits demodulation reference signal DMRS of each terminal device according to DMRS of each terminal device. The upstream channel of each terminal device is estimated to analyse the upstream data corresponding to each terminal device.
【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】2017.07....
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