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    METHOD FOR RANDOM ACCESS, USER EQUIPMENT AND BASE STATION
    64.
    发明公开
    METHOD FOR RANDOM ACCESS, USER EQUIPMENT AND BASE STATION 审中-公开

    公开(公告)号：EP3914028A1

    公开(公告)日：2021-11-24

    申请号：EP21185505.1

    申请日：2017-12-07

    申请人： Samsung Electronics Co., Ltd.

    发明人： ZHANG, Yingjie ,  YU, Bin ,  QIAN, Chen ,  SU, Di ,  XIONG, Qi ,  FU, Jingxing

    IPC分类号： H04W74/08 ,  H04W74/00 ,  H04W52/36 ,  H04W52/42 ,  H04W52/32 ,  H04W52/50

    摘要： A method is performed by a terminal in a wireless communication system. The terminal transmits, to a base station, a random access preamble and increases a preamble transmission counter for a retransmission of the random access preamble, in case that a random access response for the random access preamble is not received within a random access window. It identifies a transmission power for the retransmission of the random access preamble based on a preamble power ramping counter, wherein the preamble power ramping counter is increased in case that a transmission beam for the retransmission is not changed, and the preamble power ramping counter is maintained in case that the transmission beam for the retransmission is changed. The method comprises transmitting, to the base station, the random access preamble by using the transmission power.