公开(公告)号：US20080113622A1

公开(公告)日：2008-05-15

申请号：US11940249

申请日：2007-11-14

Applicant: Yong-Hwan LEE ,  Seung-Hwan LEE

Inventor： Yong-Hwan LEE ,  Seung-Hwan LEE

IPC: H04B15/00 ,  H04B17/00

CPC classification number: H04B17/0087 ,  H04B7/12 ,  H04B17/24 ,  H04B17/309

Abstract: A system and method for probing a channel by a base station in a communication system is provided. The channel probing includes performing pre-probing for selecting a subchannel, adjusting a subcarrier distance of a probing signal according to frequency selectivity indicative of frequency-domain channel selectivity based on a time channel correlation of each of a plurality of users and performing main-probing for transmitting the probing signal on the selected subchannel.

Abstract translation: 提供了一种用于在通信系统中由基站探测信道的系统和方法。 信道探测包括执行用于选择子信道的预探测，根据指示频域信道选择性的频率选择性调整探测信号的副载波距离，基于多个用户中的每个用户的时间信道相关性，并执行主要探测 用于在所选择的子信道上发送探测信号。

公开(公告)号：US20090203335A1

公开(公告)日：2009-08-13

申请号：US12109611

申请日：2008-04-25

Applicant: Yong-Hwan LEE ,  JaeYun KO

Inventor： Yong-Hwan LEE ,  JaeYun KO

IPC: H04B1/04 ,  H04B1/02

CPC classification number: H04B7/0443 ,  H04B7/0465

Abstract: An apparatus and method for partial adaptive transmission in a Multiple-Input Multiple-Output (MIMO) system are provided. The method includes estimating a correlation matrix between Transmit (Tx) antennas and an average Signal to Noise Ratio (SNR) and generating a long-term precoding matrix composed of a predetermined number of dominant eigen dimensions of the correlation matrix by using the estimated correlation matrix and average SNR. The apparatus and method provide a new adaptive MIMO transmission method capable of reducing the feedback information overhead and maximizing performance.

Abstract translation: 提供了一种用于多输入多输出（MIMO）系统中的部分自适应传输的装置和方法。 该方法包括估计发射（Tx）天线与平均信噪比（SNR）之间的相关矩阵，并且通过使用估计的相关矩阵来生成由相关矩阵的预定数量的主要特征维度组成的长期预编码矩阵 和平均SNR。 该装置和方法提供了一种能够减少反馈信息开销和最大化性能的新的自适应MIMO传输方法。

公开(公告)号：US20080130582A1

公开(公告)日：2008-06-05

申请号：US11766876

申请日：2007-06-22

Applicant: Yong-Hwan LEE ,  Keon-Wook LEE

Inventor： Yong-Hwan LEE ,  Keon-Wook LEE

IPC: H04Q7/36

CPC classification number: H04W36/30 ,  H04W36/18 ,  H04W88/02

Abstract: An apparatus and method for avoiding interference in a broadband wireless communication system using FCS are provided. The apparatus and method include a receiver for monitoring channel statuses of neighbor cells using signals received from the neighbor cells, an active set generator for generating an active set according to at least one of the channel statuses of the neighbor cells, loads of the neighbor cells, and a performance gain from the neighbor cells, and a BS selector for selecting a serving cell from the active set according to the channel statuses of cells included in the active set. Accordingly, interference is reduced and reception performance is improved.

Abstract translation: 提供了一种避免在使用FCS的宽带无线通信系统中的干扰的装置和方法。 该装置和方法包括：使用从相邻小区接收的信号监视相邻小区的信道状态的接收机;根据相邻小区的信道状态中的至少一个生成活动集的活动集生成器，相邻小区的负载 ，以及来自相邻小区的性能增益;以及BS选择器，用于根据活动集中包括的小区的信道状态从活动集中选择服务小区。 因此，降低了干扰，提高了接收性能。

公开(公告)号：US20110071758A1

公开(公告)日：2011-03-24

申请号：US12819757

申请日：2010-06-21

Applicant: Chae-Guk CHO ,  Sung-Ha CHOI ,  Yong-Hwan LEE

Inventor： Chae-Guk CHO ,  Sung-Ha CHOI ,  Yong-Hwan LEE

IPC: G01C21/32

CPC classification number: G01C21/3682 ,  G01C21/00 ,  G01C21/3667 ,  G01C21/3673 ,  G01C21/3679 ,  G01C21/3685

Abstract: A navigation method and apparatus of a mobile terminal displays only a particular point of interest (POI) existing by the roadside of a pre-set route when the POI is selected by the user, to thereby provide the user-selected POI without changing the route (or without re-searching the route). The navigation apparatus of a mobile terminal includes a display unit configured to display a route from a current location to a destination on map data, and a controller configured to search a first point of interest (POI) among the first POI located by the roadside of the route and a second POI located near the route, and display location information of the searched first POI on the display unit.

Abstract translation: 当用户选择POI时，移动终端的导航方法和装置仅显示由预设路由的路侧存在的特定兴趣点（POI），从而提供用户选择的POI而不改变路由 （或不重新搜索路线）。 移动终端的导航装置包括：显示单元，被配置为在地图数据上显示从当​​前位置到目的地的路线;以及控制器，被配置为搜索位于第一POI的第一POI中的第一兴趣点 所述路线和位于所述路线附近的第二POI，并且在所述显示单元上显示所搜索的第一POI的位置信息。

公开(公告)号：US20070275727A1

公开(公告)日：2007-11-29

申请号：US11751272

申请日：2007-05-21

Applicant: Yong-Hwan LEE ,  Jin-Woo LEE

Inventor： Yong-Hwan LEE ,  Jin-Woo LEE

IPC: H04Q7/20

CPC classification number: H04W52/367 ,  H04W52/146 ,  H04W52/243 ,  H04W52/282 ,  H04W52/283

Abstract: An apparatus and method for uplink (UL) power control in a broadband wireless access (BWA) communication system are provided. In a communication method for a base station (BS), the channel gain, noise power and speed of each MS are determined, and the maximum allowable power of each mobile station (MS) are calculated using the determined channel gain, noise power and speed of each MS. Because the UL power is controlled according to the speed of the MS and the distance from the BS, the method can provide higher system capacity than the conventional power adaptation scheme.

Abstract translation: 提供了一种用于宽带无线接入（BWA）通信系统中的上行（UL）功率控制的装置和方法。 在基站（BS）的通信方法中，确定每个MS的信道增益，噪声功率和速度，并且使用确定的信道增益，噪声功率和速度来计算每个移动台（MS）的最大允许功率 的每个MS。 由于根据MS的速度和与BS的距离来控制UL功率，所以该方法可以提供比常规功率适配方案更高的系统容量。