Method for Sending Random Access Preamble Sequence, Device, and System

    公开(公告)号:US20190288784A1

    公开(公告)日:2019-09-19

    申请号:US16345148

    申请日:2016-10-26

    Abstract: This application relates to the mobile communications field, and in particular, to a random access technology in a wireless communications system. This application provides a method for sending a random access preamble sequence, an apparatus, and a system. In this solution, a terminal device obtains a cyclic shift value that satisfies a high-speed movement scenario and sends a random access preamble sequence corresponding to the cyclic shift value. Impact brought by the high-speed movement scenario is considered when the random access preamble sequence is determined, thereby avoiding interference between terminal devices in the high-speed scenario.

    Downlink Control Information Transmission Method and Apparatus

    公开(公告)号:US20190082453A1

    公开(公告)日:2019-03-14

    申请号:US16188913

    申请日:2018-11-13

    Abstract: A downlink control information transmission method includes: determining, by a base station, a detection period of detecting DCI by a terminal device and at least one detection moment in the detection period, where the detection period includes at least two TTIs, the at least two TTIs include at least one TTI that carries the DCI and at least one TTI that does not carry the DCI, the at least one detection moment is in a one-to-one correspondence with the at least one TTI that carries the DCI, and the at least one detection moment coincides with a start moment of the at least one TTI that carries the DCI; and sending, by the base station, the DCI to the terminal device at the at least one detection moment in the detection period.

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