METHOD AND APPARATUS FOR CELL RESELECTION IN WIRELESS COMMUNICATION SYSTEM

    公开(公告)号:US20240163765A1

    公开(公告)日:2024-05-16

    申请号:US18289989

    申请日:2022-03-07

    Abstract: The present disclosure relates to a cell reselection in wireless communications. According to an embodiment of the present disclosure, a method performed by a user equipment (UE) in a wireless communication system comprises: receiving, from a network, location information comprising a location point for each time point related to each of neighbor cells; determining a distance to each of the neighbor cells from the UE as a distance between the location point and the UE; selecting one or more cells including at least one of: i) a cell to which the distance from the UE is longest among a first set of the neighbor cells in a distance decreasing state; or ii) a cell to which the distance from the UE is shortest among a second set of the neighbor cells in a distance increasing state; and performing a cell reselection to a cell among the selected one or more cells. The distance decreasing state is a state in which the distance to the first set of the neighbor cells from the UE decreases by time. The distance increasing state is a state in which the distance to the second set of the neighbor cells from the UE increases by time.

    METHOD AND APPARATUS FOR HANDLING EPHEMERIS INFORMATION FOR A NTN CELL IN A WIRELESS COMMUNICATION SYSTEM

    公开(公告)号:US20220291394A1

    公开(公告)日:2022-09-15

    申请号:US17692060

    申请日:2022-03-10

    Abstract: A method and apparatus for handling ephemeris information for a NTN cell in a wireless communication system is provided. A wireless device may receive, from a network, an ephemeris information related to a Non-Terrestrial Networks (NTN) cell. The wireless device may determine whether the ephemeris information is valid or not, based on whether the measurement on the NTN cell is able to be performed during the service time of the NTN cell. Based on determining that the ephemeris information is not valid, the wireless device may transmit, to the network, (1) information informing that the ephemeris information is not valid and (2) information on time at which the measurement on the NTN cell is able to be performed.

    METHOD AND APPARATUS FOR CONDITIONAL HANDOVER BASED ON THE SERVICE TIME OF CANDIDATE CELLS IN A WIRELESS COMMUNICATION SYSTEM

    公开(公告)号:US20220167221A1

    公开(公告)日:2022-05-26

    申请号:US17438565

    申请日:2020-05-11

    Inventor: Oanyong LEE

    Abstract: A method and apparatus for conditional handover based on the service time of candidate cells in a wireless communication system is provided. A wireless device receives, from a network, handover configuration including information related to candidate cells to be measured and service time of each of the candidate cells. A wireless device performs measurement on the candidate cells. A wireless device selects a cell among the candidate cells based on the service time of each of the candidate cells. A wireless device performs handover to the selected cell.

    METHOD AND APPARATUS FOR CELL RESELECTION IN WIRELESS COMMUNICATION SYSTEM

    公开(公告)号:US20240244517A1

    公开(公告)日:2024-07-18

    申请号:US18289861

    申请日:2022-03-02

    CPC classification number: H04W48/20

    Abstract: The present disclosure relates to a cell reselection in wireless communications. According to an embodiment of the present disclosure, a method performed by a user equipment (UE) in a wireless communication system comprises: receiving, from a network, location information comprising a location point for each time point related to each of neighbor cells and a reference distance related to each of the neighbor cells; determining a distance to each of the neighbor cells from the UE as a distance between the location point and the UE; determining a ratio of the distance to the reference distance for each of the neighbor cells; selecting a cell based on the determined ratio among at least one of the neighbor cells; and performing a cell reselection to the selected cell.

    METHOD AND APPARATUS FOR MOBILITY IN DUAL CONNECTIVITY IN WIRELESS COMMUNICATION SYSTEM

    公开(公告)号:US20240056917A1

    公开(公告)日:2024-02-15

    申请号:US17769069

    申请日:2020-10-14

    CPC classification number: H04W36/00835 H04W36/0058

    Abstract: The present disclosure relates to mobility in dual connectivity (DC) in wireless communications. According to an embodiment of the present disclosure, a method performed by a wireless device in a wireless communication system comprises: receiving, from a network, a plurality of conditional mobility commands, each of the plurality of conditional mobility commands comprising a respective trigger type; identifying, among the plurality of conditional mobility commands, one or more conditional mobility commands comprising a trigger type corresponding to a secondary cell group (SCG) configuration status of the wireless device; and performing an evaluation of one or more target cells related to the one or more conditional mobility commands.

    METHOD AND APPARATUS FOR CELL RESELECTION IN WIRELESS COMMUNICATION SYSTEM

    公开(公告)号:US20220070751A1

    公开(公告)日:2022-03-03

    申请号:US17413489

    申请日:2020-01-15

    Inventor: Oanyong LEE

    Abstract: The present disclosure relates to cell reselection in wireless communications. According to an embodiment of the present disclosure, a method performed by a wireless device in a wireless communication system comprises: performing a cell reselection to a cell; receiving information for a signal quality range, information for a scaling factor for the signal quality range and information for a time period for determining a number of cell reselections; based on a determination that a signal quality measured for the cell is within the signal quality range, applying the scaling factor for the signal quality range to the time period; and estimating a mobility state of the wireless device based on the time period to which the scaling factor is applied.

    METHOD AND APPARATUS FOR INFORMING RELAXED MEASUREMENT UPON EARLY MEASUREMENT REPORTING IN A WIRELESS COMMUNICATION SYSTEM

    公开(公告)号:US20210105647A1

    公开(公告)日:2021-04-08

    申请号:US17039783

    申请日:2020-09-30

    Inventor: Oanyong LEE

    Abstract: A method and apparatus for informing relaxed measurement upon early measurement reporting in a wireless communication system is provided. A wireless device evaluates the at least one of the relaxed measurement conditions based on measurement results of the serving frequency. A wireless device performs relaxed measurement on the serving frequency and/or the at least one of neighbor frequencies based on the evaluation. A wireless device transmits, to the network, a message including 1) measurement results on each frequency of the frequency set, and 2) information on the relaxed measurement on the each frequency of the frequency set.

    METHOD FOR DETERMINING MOBILITY STATE OF UE AND DEVICE SUPPORTING THE SAME

    公开(公告)号:US20210068027A1

    公开(公告)日:2021-03-04

    申请号:US16644036

    申请日:2018-09-28

    Abstract: Provided are a method of determining mobility state of an UE and a device supporting the method. According to one embodiment of the present disclosure, the method includes: measuring a first reference signal received power (RSRP) of a serving cell at a first time point; measuring a second RSRP of the serving cell at a second time point within a first duration starting from the first time point; comparing the first RSRP and the second RSRP; and estimating for a mobility state of the UE based on a difference between the first RSRP and the second RSRP.

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