An information transmission device, method and communication system. The information transmission method includes: transmission information containing data sent by the receiving and sending end in a dispatch-free manner; identification information of the sending end is explicitly or implicitly carried in the transmission information; demodulation and verification of the transmission information, and determination of whether the data and the identification information of the sending end are correctly obtained; identification information of the sending end or the sequence of DM RS are used. Information, feedback to the sender contains ACK/NACK control information. Thus, even if the data transmitted by the sender can not be obtained correctly, the receiver can feedback NACK information based on the identification information of the sender or the sequence information of DM_RS, which can realize efficient data retransmissions without scheduling 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,...
【专利技术属性】
技术研发人员:张健,郤伟,王昕,周华,
申请(专利权)人:富士通株式会社,
类型:发明
国别省市:日本,JP
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