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    COMMUNICATIONS DEVICE, METHOD AND CIRCUITRY FOR A COMMUNICATIONS DEVICE
    3.
    发明公开
    COMMUNICATIONS DEVICE, METHOD AND CIRCUITRY FOR A COMMUNICATIONS DEVICE 审中-实审

    公开(公告)号：EP4401500A1

    公开(公告)日：2024-07-17

    申请号：EP24171411.2

    申请日：2020-01-10

    申请人： Sony Group Corporation ,  Sony Europe B.V.

    发明人： ATUNGSIRI, Samuel Asangbeng ,  BEALE, Martin Warwick ,  AWAD, Yassin Aden ,  WEI, Yuxin ,  SHIMEZAWA, Kazuyuki

    IPC分类号： H04W74/08 ,  H04W74/0833

    CPC分类号： H04W74/0833

    摘要： A communications device for transmitting data to a wireless communications network is configured to transmit a random access preamble, and to transmit uplink data in an uplink shared physical channel associated with the preamble according to a 2-step random access procedure, the association between the preamble and the uplink shared channel being known to the wireless communications network. The communications device is configured to detect, in response to transmitting the preamble and the uplink data, a random access response message providing timing advance information and uplink grant of resources of the uplink shared channel according to a 4-step random access procedure. In response to detecting the random access response message, the communications device is configured to transmit uplink data in the uplink resources granted in the random access response message according to a 4-step random access procedure, as if the communications device was continuing with a 4-step RACH procedure having started with a 2-step RACH procedure. As such there is no requirement to fall-back to a full 4-step random access procedure, if a 2-step random access procedure has failed, thereby saving time and communications resources.