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    Method and apparatus for acquiring synchronization in code division multiple access system
    2.
    发明授权
    Method and apparatus for acquiring synchronization in code division multiple access system 有权
    用于在码分多址系统中获取同步的方法和装置

    公开(公告)号：US09025569B2

    公开(公告)日：2015-05-05

    申请号：US13937430

    申请日：2013-07-09

    Applicant: Samsung Electronics Co. Ltd.

    Inventor： Myung-Joon Shim ,  Seung-Hwan Won ,  Sang-Won Choi ,  Jong-Gun Moon ,  Jong-Yoon Hwang

    IPC: H04W56/00

    CPC classification number: H04W56/00 ,  H04B1/7073

    Abstract: A method and an apparatus for acquiring downlink frame synchronization are provided. The method includes phase-rotating a mid-amble of a first Time Slot (TS) of a received sub-frame within an area and estimating a Channel Impulse Response (CIR), calculating a Maximum Likelihood (ML) between a downlink synchronization code of the received sub-frame and a downlink synchronization code generated in a terminal by using the estimated CIR, correlating downlink synchronization codes of a plurality of sub-frames and the downlink synchronization code generated and calculating ML values of the plurality of sub-frames with respect to the plurality of sub-frames corresponding to M Transmission Time Intervals (TTIs), and calculating hypothesis values of hypotheses according to a frequency interval and a phase offset of the generated downlink synchronization code based on the calculated ML values of the plurality of sub-frames and drawing a frequency offset and a hypothesis corresponding to a maximum value.

    Abstract translation: 提供了一种用于获取下行链路帧同步的方法和装置。 该方法包括在区域内相位旋转接收到的子帧的第一时隙（TS）的中间码，并估计信道脉冲响应（CIR），计算下行链路同步码之间的最大似然（ML） 接收到的子帧和通过使用估计的CIR在终端中生成的下行链路同步码，将多个子帧的下行链路同步码和生成的下行链路同步码相关联，并且相对于多个子帧的ML值计算 对应于M个传输时间间隔（TTI）的多个子帧，并且基于所计算出的多个子帧的ML值，根据生成的下行链路同步码的频率间隔和相位偏移来计算假设的假设值， 并绘制频率偏移和对应于最大值的假设。

    Schemes related to resource allocation, discovery and signaling in D2D systems
    5.
    发明授权
    Schemes related to resource allocation, discovery and signaling in D2D systems 有权

    公开(公告)号：US10051610B2

    公开(公告)日：2018-08-14

    申请号：US14707294

    申请日：2015-05-08

    Applicant: Samsung Electronics Co., Ltd.

    Inventor： Peng Xue ,  Hyun-Seok Ryu ,  Seung-Hoon Park ,  Hyun-Kyu Yu ,  Cheol Jeong ,  Sang-Won Choi

    IPC: H04W72/04 ,  H04L5/00 ,  H04W8/00 ,  H04W88/02 ,  H04W88/08 ,  H04W72/12 ,  H04W76/14

    Abstract: The present disclosure relates to a pre-5th-Generation (5G) or 5G communication system to be provided for supporting higher data rates Beyond 4th-Generation (4G) communication system such as Long Term Evolution (LTE). A method for performing device-to-device (D2D) communication by an in-coverage user equipment (UE) in a cellular communication system is provided. The method includes receiving a scheduling grant through a downlink control channel from a base station (evolved Node B (eNB)) and transmitting a scheduling assignment (SA) message in an SA region of a D2D communication frame and data in a data region of the D2D communication frame, based on the scheduling grant, wherein the scheduling grant indicates a resource pattern for transmission (RPT) corresponding to a set of resource units or a subset of a resource unit in a time domain and a frequency domain that is used for transmission of the data.

    Apparatus and method for acquiring D2D synchronization information
    6.
    发明授权
    Apparatus and method for acquiring D2D synchronization information 有权

    公开(公告)号：US09801148B2

    公开(公告)日：2017-10-24

    申请号：US14707535

    申请日：2015-05-08

    Applicant: Samsung Electronics Co., Ltd

    Inventor： Hyun-Kyu Yu ,  Hyun-Seok Ryu ,  Seung-Hoon Park ,  Cheol Jeong ,  Sang-Won Choi ,  Peng Xue

    IPC: H04W56/00

    CPC classification number: H04W56/001

    Abstract: The present disclosure relates to a pre-5th-Generation (5G) or 5G communication system to be provided for supporting higher data rates Beyond 4th-Generation (4G) communication system such as Long Term Evolution (LTE). An apparatus and method for acquiring synchronization information through the transmission and reception of signals between devices for device to device (D2D) communication is provided. A method for a user equipment (UE) in a wireless communication system includes detecting a synchronization signal of another UE in a predetermined measurement gap. The method also includes transmitting a detected result of the synchronization signal to an evolved Node B (eNB). A start time point of the measurement gap in a first measurement gap period and a start time point of the measurement gap in a second measurement gap period are different from each other.

    Multi-path search apparatus and method in a wireless communication system
    7.
    发明授权
    Multi-path search apparatus and method in a wireless communication system 有权
    无线通信系统中的多路径搜索装置和方法

    公开(公告)号：US09456367B2

    公开(公告)日：2016-09-27

    申请号：US14338601

    申请日：2014-07-23

    Applicant: Samsung Electronics Co., Ltd.

    Inventor： Sang-Won Choi ,  Seung-Hwan Won ,  Myung-Joon Shim ,  Jong-Gun Moon ,  Jong-Yoon Hwang

    IPC: H04W24/08 ,  H04B1/7113 ,  H04B17/309 ,  H04L25/02 ,  H04W52/12

    CPC classification number: H04W24/08 ,  H04B1/7113 ,  H04B17/309 ,  H04L25/0226 ,  H04W52/12

    Abstract: A multi-path search apparatus and a method in a wireless communication system are provided. The multi-path search apparatus includes a correlator configured to get a 1st correlation value between a received signal and a 1st code, and to get a 2nd correlation value between the received signal and a 2nd code, a coupler configured to couple the 1st correlation value and the 2nd correlation value, and a multi-path information generator configured to get the correlation energy of the output of the coupler and to generate multi-path information.

    Abstract translation: 提供了多路径搜索装置和无线通信系统中的方法。 多路径搜索装置包括：相关器，被配置为获得接收信号和第一码之间的第一相关值，并且获得接收信号和第二码之间的第二相关值;耦合器，被配置为将第一相关值 和第二相关值，以及多路径信息发生器，被配置为获得耦合器的输出的相关能并产生多路径信息。

    Method and apparatus for acquiring synchronization in code division multiple access system
    8.
    发明授权
    Method and apparatus for acquiring synchronization in code division multiple access system 有权
    用于在码分多址系统中获取同步的方法和装置

    公开(公告)号：US09055525B2

    公开(公告)日：2015-06-09

    申请号：US13938846

    申请日：2013-07-10

    Applicant: Samsung Electronics Co. Ltd.

    Inventor： Myung-Joon Shim ,  Seung-Hwan Won ,  Sang-Won Choi ,  Jong-Gun Moon ,  Jong-Yoon Hwang

    IPC: H04W56/00

    CPC classification number: H04W56/00

    Abstract: A method of acquiring initial synchronization in a code division multiple access mobile communication system is provided. The method includes quantizing a received signal into a plurality of levels, calculating correlation values of the quantized received signal and a local code, calculating absolute values of the correlation values, and detecting a position of a maximum value which exceeds a threshold among the absolute values and an ID of a downlink synchronization (SYNC-DL) sequence and determining timing values of available cells and energy values corresponding to the timing values.

    Abstract translation: 提供了一种在码分多址移动通信系统中获取初始同步的方法。 该方法包括将接收到的信号量化为多个电平，计算量化的接收信号和本地码的相关值，计算相关值的绝对值，以及检测绝对值中超过阈值的最大值的位置 以及下行链路同步（SYNC-DL）序列的ID，并确定与定时值相对应的可用小区和能量值的定时值。

    UE discovery method and system in D2D network
    9.
    发明授权
    UE discovery method and system in D2D network 有权

    公开(公告)号：US10342019B2

    公开(公告)日：2019-07-02

    申请号：US15322663

    申请日：2016-02-05

    Applicant: Samsung Electronics Co., Ltd.

    Inventor： Peng Xue ,  Hyun-Seok Ryu ,  Seung-Hoon Park ,  Sang-Won Choi

    IPC: H04W4/00 ,  H04W72/04 ,  H04W48/08 ,  H04W56/00 ,  H04W8/00 ,  H04W76/14 ,  H04W72/02

    Abstract: A 5G or pre-5G communication system for supporting a higher data transmission rate beyond a 4G communication system such as long-term evolution (LTE) is provided, including a method for performing device to device (D2D) discovery by a user equipment (UE), which is out of the coverage area serviced by a base station, in a wireless communication network. The method includes the operations of receiving pre-configuration information for transmitting a discovery message, and transmitting the discovery message in a transmission resource determined on the basis of the pre-configuration information, wherein the pre-configuration information includes a list of pools for transmitting the discovery message, and the transmission resource is determined from the list of pools.

    METHOD AND APPARATUS FOR ESTIMATING POSITION IN A WIRELESS COMMUNICATION SYSTEM
    10.
    发明申请
    METHOD AND APPARATUS FOR ESTIMATING POSITION IN A WIRELESS COMMUNICATION SYSTEM 审中-公开

    公开(公告)号：US20190090092A1

    公开(公告)日：2019-03-21

    申请号：US15505903

    申请日：2016-09-07

    Applicant: Samsung Electronics Co., Ltd.

    Inventor： Won-Joon Hwang ,  Hyun-Seok Ryu ,  Jeong-Ho Park ,  Peng Xue ,  Sang-Won Choi

    IPC: H04W4/029 ,  G01S5/14 ,  G01S5/00

    Abstract: The present disclosure relates to a 5th generation (5G) or pre-5G communication system for supporting higher data rates than a 4th generation (4G) communication system such as long term evolution (LTE). A method for positioning a user equipment (UE) in a wireless communication system includes receiving a reference signal (RS) in a first bandwidth from each of a plurality of anchor nodes scheduled for RS transmission by a network server, determining whether a path overlap has occurred between the UE and the anchor nodes based on symmetry of channel impulse responses of the received RSs, transmitting a bandwidth extension request message to the network server, upon occurrence of a path overlap, receiving an RS in a second bandwidth larger than the first bandwidth from each of the plurality of anchor nodes in response to the transmission of the bandwidth extension request message, and generating information required to position the UE, using the RSs received in the second bandwidth.

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