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    Method and apparatus for estimating location to support location based service of terminal in mobile communication system
    1.
    发明申请
    Method and apparatus for estimating location to support location based service of terminal in mobile communication system 审中-公开
    用于估计位置以支持移动通信系统中终端的基于位置的服务的方法和装置

    公开(公告)号：US20090160710A1

    公开(公告)日：2009-06-25

    申请号：US12317224

    申请日：2008-12-19

    申请人： Suk-Seung Hwang ,  Joo-Hyun Lee ,  Sang-Boh Yun

    发明人： Suk-Seung Hwang ,  Joo-Hyun Lee ,  Sang-Boh Yun

    IPC分类号： G01S1/24

    CPC分类号： G01S5/10

    摘要： A method and an apparatus for estimating a location to support a location based service of a terminal in a mobile communication system are provided. The method includes receiving first reference signals from three base stations, calculating TDOAs, and solving a first equation using the TDOAs based on the first reference signals; when a solution of determining a location of a terminal based on the first equation is real or imaginary values, receiving second reference signals from the three base stations, calculating TDOAs, and solving a second equation using the TDOAs based on the second reference signals; and when a solution of determining the location of the terminal based on the second equation is real or imaginary values, determining the location of the terminal based on a relation between the first equation and the second equation.

    摘要翻译： 提供了一种用于估计在移动通信系统中支持终端的基于位置的服务的位置的方法和装置。 该方法包括从三个基站接收第一参考信号，计算TDOA，以及基于第一参考信号求解使用TDOA的第一方程; 当基于第一方程确定终端的位置的解决方案是实数或虚数值时，从三个基站接收第二参考信号，计算TDOA，并且基于第二参考信号使用TDOA来求解第二方程; 并且当基于第二方程确定终端的位置的解决方案是实数或虚数值时，基于第一方程和第二方程之间的关系来确定终端的位置。

    Apparatus and method for canceling interference in multi-antenna system
    2.
    发明申请
    Apparatus and method for canceling interference in multi-antenna system 有权
    消除多天线系统干扰的装置和方法

    公开(公告)号：US20090147890A1

    公开(公告)日：2009-06-11

    申请号：US12315342

    申请日：2008-12-02

    申请人： Joo-Hyun Lee ,  Suk-Seung Hwang ,  Jong-Ho Lee ,  Soong-Yoon Choi

    发明人： Joo-Hyun Lee ,  Suk-Seung Hwang ,  Jong-Ho Lee ,  Soong-Yoon Choi

    IPC分类号： H04L1/02 ,  H03D1/00

    CPC分类号： H04L1/0048 ,  H04B7/0851 ,  H04L1/0054 ,  H04L25/0204 ,  H04L25/03171

    摘要： An apparatus and a method for canceling interference based on Maximum Likelihood (ML) at a receiver of a multi-antenna system are provided. The method includes estimating a channel using a signal received over one or more receiver antennas; generating one or more weights using the estimated channel to cancel interference; detecting a candidate symbol having the shortest Euclidean distance through Maximum Likelihood using a first weight; and soft-decoding the candidate symbol using a second weight. Therefore, by receiving the signal based on the ML under the interference, the system capacity can be increased and the reception performance can be enhanced.

    摘要翻译： 提供了一种用于在多天线系统的接收机处基于最大似然（ML）消除干扰的装置和方法。 该方法包括使用在一个或多个接收机天线上接收的信号来估计信道; 使用所估计的信道生成一个或多个权重以消除干扰; 使用第一权重通过最大似然检测具有最短欧几里德距离的候选符号; 以及使用第二权重对候选符号进行软解码。 因此，通过在干扰下接收基于ML的信号，可以提高系统容量并提高接收性能。

    Apparatus and method for location estimation in a wireless communication system
    5.
    发明授权
    Apparatus and method for location estimation in a wireless communication system 有权
    无线通信系统中位置估计的装置和方法

    公开(公告)号：US08374543B2

    公开(公告)日：2013-02-12

    申请号：US13242670

    申请日：2011-09-23

    申请人： Suk-Seung Hwang ,  Joo-Hyun Lee ,  Sang-Boh Yun ,  Young-Hoon Kwon

    发明人： Suk-Seung Hwang ,  Joo-Hyun Lee ,  Sang-Boh Yun ,  Young-Hoon Kwon

    IPC分类号： H04W88/02

    CPC分类号： G01S5/0205 ,  G01S5/0018 ,  G01S5/0273 ,  G01S5/10 ,  H04B7/155 ,  H04B7/2606 ,  H04L27/2647 ,  H04W56/00 ,  H04W64/00

    摘要： An apparatus and method for location estimation in a wireless communication system are provided. The method includes identifying if a received at least one signal passed through at least one repeater, when the received at least one signal is identified as having passed through at least one repeater, measuring a Base Station (BS) basis delay time and calculating a repeater basis delay time using the measured BS basis delay time, and estimating a location of the Mobile Station (MS) using the repeater basis delay time.

    摘要翻译： 提供了一种用于无线通信系统中的位置估计的装置和方法。 所述方法包括：当所接收的至少一个信号被识别为已经通过至少一个中继器时，识别接收到的至少一个信号是否经过至少一个中继器，测量基站（BS）基延迟时间并计算中继器 使用所测量的基站延迟时间的基准延迟时间，以及使用中继器基础延迟时间估计移动站（MS）的位置。

    Apparatus and method for transmitting/receiving preamble signal and estimating channel in an orthogonal frequency division multiplexing communication systems using multiple input multiple output scheme
    6.
    发明授权
    Apparatus and method for transmitting/receiving preamble signal and estimating channel in an orthogonal frequency division multiplexing communication systems using multiple input multiple output scheme 有权
    用于在使用多输入多输出方案的正交频分复用通信系统中发送/接收前导信号和估计信道的装置和方法

    公开(公告)号：US08345786B2

    公开(公告)日：2013-01-01

    申请号：US12001264

    申请日：2007-12-11

    申请人： Suk-Seung Hwang ,  Sang-Boh Yun ,  Young-Hoon Kwon

    发明人： Suk-Seung Hwang ,  Sang-Boh Yun ,  Young-Hoon Kwon

    IPC分类号： H04B7/02

    CPC分类号： H04L25/03006 ,  H04L1/0618 ,  H04L5/00

    摘要： A signal reception apparatus of an orthogonal frequency division multiplexing (OFDM) communication system using a multiple input, multiple output (MIMO) scheme. The signal reception apparatus, when it uses the NR receive antennas, receives a time-domain preamble signal transmitted by a signal transmission apparatus corresponding thereto via each of the NR receive antennas, and estimates a channel according to a channel estimation scheme using the time-domain preamble signal received via each of the NR receive antennas. When the signal transmission apparatus uses NT transmit antennas, the time-domain preamble signal is a signal transmitted by the signal transmission apparatus via each of the NT transmit antennas for a second time period which is set according to a corresponding transmit antenna within a first time period.

    摘要翻译： 一种使用多输入多输出（MIMO）方式的正交频分复用（OFDM）通信系统的信号接收装置。 信号接收装置在使用NR个接收天线的情况下，经由NR个接收天线中的每一个接收由与其对应的信号发送装置发送的时域前导信号，并使用时间 - 经由每个NR个接收天线接收的域前导信号。 当信号发送装置使用NT发送天线时，时域前导码信号是信号发送装置经由第一时间内根据对应的发送天线设定的第二时间段的每个NT发送天线发送的信号 期。