This application provides an upstream data transmission method and a user terminal (UE) that executes the method. The method of this application includes: A, generating the first random number; B, judging whether to initiate a random access process according to the generated first random number; if the random access process is initiated, the time advance (TA) value is obtained from the base station through the random access process; if the random access process is not initiated, the TA value is obtained from the TA message listening for other UE broadcasting; C, according to the TA value obtained; Upstream data transmission; D, if the upstream data transmission is successful, then continue to execute E; If the upstream data transmission is unsuccessful, then return A; E, according to the TA value obtained, generate TA message, and broadcast the generated TA message. The method of this application can reduce the delay and power consumption.
【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】2016.08....
【专利技术属性】
技术研发人员:叶能,李祥明,李安新,陈晓航,赵群,蒋惠玲,
申请(专利权)人:株式会社NTT都科摩,
类型:发明
国别省市:日本,JP
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