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    Handover method in mobile communication system
    2.
    发明授权
    Handover method in mobile communication system 有权

    公开(公告)号：US11039357B2

    公开(公告)日：2021-06-15

    申请号：US15984159

    申请日：2018-05-18

    Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

    Inventor： Hyun Seo Park ,  Hyun Lee ,  Tae Joong Kim ,  Hee Soo Lee ,  Yu Ro Lee ,  Eun Kyung Kim ,  An Seok Lee

    IPC: H04W36/08 ,  H04W36/00 ,  H04W74/08 ,  H04B7/06 ,  H04W88/08

    Abstract: An operation method of a terminal, for a handover in a mobile communication system, may comprise performing measurement on beams of a target base station, and transmitting a measurement result of at least one beam of the target base station to a source base station; receiving, from the source base station, a handover command message including information on at least one RACH resource for the at least one beam; transmitting a handover indication message including information on at least one random access target beam having an order of channel conditions determined based on a latest measurement to the source base station and to the target base station through the source base station; and determining an optimal beam among the at least one random access target beam, and transmitting a RACH to the target base station through a RACH resource allocated to the optimal beam.

    Handover method and apparatus
    5.
    发明授权
    Handover method and apparatus 有权
    切换方法和装置

    公开(公告)号：US09497683B2

    公开(公告)日：2016-11-15

    申请号：US14417012

    申请日：2013-07-24

    Applicant: Electronics and Telecommunications Research Institute

    Inventor： Hyun Seo Park ,  Sung-Min Oh ,  Ae-Soon Park ,  Eunah Kim ,  Sook Yang Kang ,  JaeSheung Shin ,  Pyeong Jung Song

    IPC: H04W36/24 ,  H04W36/08 ,  H04W36/30 ,  H04W36/36

    CPC classification number: H04W36/24 ,  H04W36/08 ,  H04W36/30 ,  H04W36/36

    Abstract: A UE does not immediately perform handover after receiving a handover command from a serving base station, but instead backups that message and continuously compares the signal strength of a serving base station and the signal strength of a target base station and performs a handover to the target base station at the best timing when handover is required. Once the timing of handover is determined, the UE transmits a handover indication message to the serving base station, and thereafter the UE performs a handover to the target base station.

    Abstract translation: 在从服务基站接收到切换命令之后，UE不立即执行切换，而是备份该消息，并且连续地比较服务基站的信号强度和目标基站的信号强度并执行到目标的切换 基站需要切换时的最佳时间。 一旦确定了切换的定时，则UE向服务基站发送切换指示消息，此后，UE对目标基站进行切换。

    System and method for multi-hierarchical cell configuration
    6.
    发明授权
    System and method for multi-hierarchical cell configuration 有权
    多层次单元配置的系统和方法

    公开(公告)号：US09078176B2

    公开(公告)日：2015-07-07

    申请号：US13631486

    申请日：2012-09-28

    Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

    Inventor： Pyeong Jung Song ,  Hyun Seo Park ,  Seung Chan Bang

    IPC: H04W36/00 ,  H04W28/00 ,  H04W72/00 ,  H04W84/00 ,  H04W4/04 ,  H04W84/04 ,  H04W28/06

    CPC classification number: H04W36/0055 ,  H04W4/046 ,  H04W28/06 ,  H04W72/00 ,  H04W84/005 ,  H04W84/045

    Abstract: Provided is a system and method for configuring a multi-hierarchical cell in which a large-scale mobile backhaul technology and a small cell technology are combined. A mobile backhaul may increase a transmission capacity of a wireless backhaul using a super high frequency (SHF)/extremely high frequency (EHF) band, rather than a cellular band having a limitation in extending frequency resources, and a small group cell to be formed at a final end of the mobile backhaul may be configured by fixed group cells or mobile group cells depending on a radio environment, using a moving relay, wireless fidelity (WiFi), femto-cells, and the like, whereby cells may be miniaturized effectively, and a relatively great capacity of a wireless system may be provided to a subscriber.

    Abstract translation: 提供了一种用于配置其中组合大规模移动回程技术和小型小区技术的多层小区的系统和方法。 移动回程可以增加使用超高频（SHF）/极高频（EHF）频带的无线回程的传输容量，而不是扩展频率资源的限制的蜂窝频带以及要形成的小组小区 在移动回程的最终端可以由固定组小区或移动组小区根据无线电环境，使用移动中继，无线保真（WiFi），毫微微小区等来配置，从而可以有效地小区化 ，并且可以向订户提供无线系统的相对较大的容量。

    Communication node for performing handover in wireless communication system and method therefor
    8.
    发明授权
    Communication node for performing handover in wireless communication system and method therefor 有权

    公开(公告)号：US10827398B2

    公开(公告)日：2020-11-03

    申请号：US16040926

    申请日：2018-07-20

    Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

    Inventor： Hyun Seo Park ,  Eun Kyung Kim ,  Tae Joong Kim ,  An Seok Lee ,  Yu Ro Lee ,  Hyun Lee ,  Hee Soo Lee

    IPC: H04W36/00 ,  H04W36/30

    Abstract: An operation method of a terminal includes receiving configuration information from a serving base station; measuring channel states of the serving base station and a target base station; when a difference between received signal strengths of the serving base station and the target base station is not less than a handover preparation offset, determining that a handover preparation event has occurred and transmitting a measurement report message to the serving base station; and when the difference is equal to or greater than a handover execution offset, determining that a handover execution event has occurred and transmitting a handover indication message informing of execution of a handover to the target base station. The channel state is normal state, abnormal state, or RLF state, and the configuration information indicates a different handover preparation offset and a different handover execution event according to the channel state.

    METHOD OF RE-TRANSMITTING DATA AND ELECTRONIC DEVICE THEREFOR
    9.
    发明申请
    METHOD OF RE-TRANSMITTING DATA AND ELECTRONIC DEVICE THEREFOR 审中-公开
    重新发送数据的方法及其电子设备

    公开(公告)号：US20160191212A1

    公开(公告)日：2016-06-30

    申请号：US14982122

    申请日：2015-12-29

    Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

    Inventor： Hyun Seo Park ,  Yong Seouk Choi

    IPC: H04L1/18

    CPC classification number: H04L1/1816 ,  H04L1/1848 ,  H04L1/1877

    Abstract: Disclosed is a first electronic device and the first electronic device includes: a transmitter transmitting data to a second electronic device; a receiver receiving a feed-back (hereinafter, referred to as a first feed-back) for the transmitted data from the second electronic device; and a processor deciding whether to transmit the data again or another data to the second electronic device, based on the first feed-back, in which when the first feed-back is negative, the transmitter retransmits the data under a predetermined condition, and when a feed-back (hereinafter, referred to as a second feed-back) received from the second electronic device is negative with respect to the data retransmitted under the predetermined condition, the transmitter re-retransmits at least a part of the data to the second electronic device.

    Abstract translation: 公开了第一电子设备，并且第一电子设备包括：发射机向第二电子设备发送数据; 接收从第二电子设备发送的数据的反馈（以下称为第一反馈）的接收机; 以及处理器，其基于所述第一反馈来决定是否再次发送所述数据还是另一数据到所述第二电子设备，其中当所述第一反馈为负时，所述发送器在预定条件下重新发送所述数据，并且当 从第二电子设备接收到的反馈（以下称为第二反馈）相对于在预定条件下重传的数据为负，发送器将至少一部分数据重新发送到第二个 电子设备。

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