Method and apparatus for performing handover

    公开(公告)号:US10757618B2

    公开(公告)日:2020-08-25

    申请号:US16262241

    申请日:2019-01-30

    Abstract: Provided are a method for performing a handover by a user equipment (UE) in a wireless communication system, and an apparatus supporting the same. The method may include: receiving information on candidate target cells for the handover and a handover condition, from a base station; initiating a handover to a first target cell among the candidate target cells, based on the handover condition; before detecting a failure of the handover to the first target cell, when channel quality of a second target cell among the candidate target cells is higher than channel quality of the first target cell, stopping the handover to the first target cell; and performing a handover to the second target cell.

    Method and apparatus for receiving OSI block in a wireless communication system

    公开(公告)号:US10721678B2

    公开(公告)日:2020-07-21

    申请号:US16429652

    申请日:2019-06-03

    Inventor: Sangwon Kim

    Abstract: Provided are a method for receiving an on-demand system information (OSI) block by a terminal in a wireless communication system and an apparatus for supporting the same. The method may comprise the steps of: receiving, from a network, an on-demand system information (OSI) configuration including information on mapping between the OSI block and information on a system information request (SIR) preamble; determining an OSI block of interest; selecting an SIR preamble corresponding to the OSI block of interest on the basis of the OSI configuration; transmitting the selected SIR preamble to a serving cell so as to request the determined OSI block of interest; and receiving the requested OSI block of interest.

    METHOD FOR REQUESTING SYSTEM INFORMATION BLOCK AND DEVICE SUPPORTING SAME

    公开(公告)号:US20200045743A1

    公开(公告)日:2020-02-06

    申请号:US16481911

    申请日:2018-01-26

    Abstract: Provided is a method for a terminal performing a random access procedure in a wireless communication system. The method comprises the steps of: transmitting, to a base station, a first random access preamble corresponding to a system information block-of-interest; receiving, from the base station, a random access response including a random access preamble identifier, wherein the random access preamble identifier indicates a second random access preamble; and determining that the random access response is valid for the terminal if the second random access preamble is included in the same preamble group as the first random access preamble.

    METHOD AND APPARATUS FOR REPORTING AN ID OF SPECIFIC BWP AMONG THE MULTIPLE BWPS IN WIRELESS COMMUNICATION SYSTEM

    公开(公告)号:US20190393969A1

    公开(公告)日:2019-12-26

    申请号:US16444283

    申请日:2019-06-18

    Inventor: Sangwon Kim

    Abstract: A method and an apparatus for reporting an ID of specific BWP among the multiple BWPs in a wireless communication system is provided. The method, by a UE, may include configuring multiple bandwidth parts (BWPs) including at least one of an active bandwidth part (BWP), receiving a received signal strength indicator (RSSI) measurement configuration and/or a channel occupancy measurement configuration from the network, performing a RSSI measurement and/or a channel occupancy measurement per each of the multiple BWPs, and reporting an identifier (ID) of a specific BWP among the multiple BWPs to the network when a condition related to the RSSI measurement and/or the channel occupancy measurement of the active BWP and the specific BWP is met.

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