公开(公告)号：WO2012057531A3

公开(公告)日：2012-07-05

申请号：PCT/KR2011008049

申请日：2011-10-27

Applicant: KOREA ELECTRONICS TELECOMM ,  NAM SEUNG HYUN ,  KIM HEE WOOK ,  HONG TAE CHUL ,  KANG KUN SEOK ,  KU BON JUN ,  AHN DO SEOB

Inventor： NAM SEUNG HYUN ,  KIM HEE WOOK ,  HONG TAE CHUL ,  KANG KUN SEOK ,  KU BON JUN ,  AHN DO SEOB

IPC: H04W74/08

CPC classification number: H04W74/0833 ,  H04W56/0005 ,  H04W56/0085

Abstract: According to the present invention, a random access method between a terminal and a base station comprises: a system information transmission step in which the base station transmits, to the terminal, system information including route values sequentially selected from among a set of routes; a random access preamble transmission step in which the terminal generates a random access preamble on the basis of the system information and transmits the generated random access preamble to the base station; a period setup step in which the base station sets a period available for an arrival of the random access preamble; and a random access preamble detection step in which the base station detects the random access preamble in said available period.

Abstract translation: 根据本发明，终端和基站之间的随机接入方法包括：系统信息发送步骤，其中基站向终端发送包括从一组路由中顺序选择的路由值的系统信息; 随机接入前导码发送步骤，在所述随机接入前导码发送步骤中，所述终端基于所述系统信息生成随机接入前导码，并将所生成的随机接入前导码发送给所述基站; 时间段设置步骤，在该步骤中，基站设置可用于随机接入前导码到达的时间段; 以及随机接入前导码检测步骤，其中基站在所述可用时段中检测到随机接入前导码。

公开(公告)号：WO2011155806A3

公开(公告)日：2012-03-08

申请号：PCT/KR2011004308

申请日：2011-06-13

Applicant: KOREA ELECTRONICS TELECOMM ,  LEE SANG UK ,  AHN DO SEOB ,  LEE JAE EUN

Inventor： LEE SANG UK ,  AHN DO SEOB ,  LEE JAE EUN

IPC: G01S19/07

CPC classification number: G01S19/07

Abstract: According to the present invention, a GPS reference station generates and transmits compensation information on GPS deviations for each wireless AP, and a user terminal recognizes and uses the information to compensate for information received through a GPS receiver of the user terminal, in order to deliver precise GPS performance. In particular, a precise GPS system of the present invention comprises: a GPS reference station for receiving a first satellite signal from a GPS satellite to generate navigation compensation information on a wireless AP, and transmitting the generated navigation compensation information to a wireless AP; a wireless AP for receiving the navigation compensation information from the GPS reference station, and transmitting the information to a user terminal; and a user terminal for receiving a second satellite signal from a GPS satellite, recognizing the navigation compensation information from the wireless AP, and generating precise user position information based on the second satellite signal and the navigation compensation information.

Abstract translation: 根据本发明，GPS参考站生成并发送关于每个无线AP的GPS偏差的补偿信息，并且用户终端识别并使用该信息来补偿通过用户终端的GPS接收机接收的信息，以便递送 精确的GPS性能。 具体地说，本发明的精确GPS系统包括：GPS基准站，用于从GPS卫星接收第一卫星信号，生成关于无线AP的导航补偿信息，并将所生成的导航补偿信息发送给无线AP; 无线AP，用于从GPS参考站接收导航补偿信息，并将该信息发送到用户终端; 以及用户终端，用于从GPS卫星接收第二卫星信号，从无线AP识别导航补偿信息，并且基于第二卫星信号和导航补偿信息生成精确的用户位置信息。

公开(公告)号：GB2490416A

公开(公告)日：2012-10-31

申请号：GB201207300

申请日：2012-04-26

Applicant: KOREA ELECTRONICS TELECOMM

Inventor： LEE SANG UK ,  SON SEUNG HO ,  AHN DO SEOB ,  LEE HO JIN ,  LEE KYUNG WOO

IPC: H01Q1/52 ,  H01Q1/42 ,  H01Q17/00 ,  H01Q19/10

Abstract: An antenna apparatus comprises an antenna cover 120 which includes a shielding unit 110 formed on a predetermined portion of one hemispherical surface of the antenna cover. The shielding unit 110 may be formed of electromagnetic shielding material which may reflect or absorb a jamming signal. The shielding 110 may cover a range of low angle signal reception directions relative to the antenna. The shielding 110 may be in the form of a paint applied to a surface of an antenna cover. The shielding 110 may be controlled to block certain signal directions. The shielding material may be formed on or adjacent the surface of a hemispherical, electromagnetic transparent radome. The shielding may be arranged to be rotated in a vertical and/or horizontal manner to block one or more jamming signals. Also disclosed is a method for shielding an antenna, comprising: detecting if a jamming signal is present. If a jamming signal is detected, then the shielding is rotated until the jamming signal is at a receive sensitivity or less. If no jamming signal is detected then the position of the shielding is controlled such that the shielding is located in a north direction relative to the antenna. The apparatus and method provides a simple and cheap way of avoiding jamming signals.

公开(公告)号：KR20150084725A

公开(公告)日：2015-07-22

申请号：KR20150092557

申请日：2015-06-29

Applicant: KOREA ELECTRONICS TELECOMM

Inventor： LEE SANG UK ,  AHN DO SEOB ,  LEE JAE EUN

IPC: G01S19/12 ,  G01S19/07

Abstract: 본발명에서는 GPS 기준국에서각 무선 AP에대한 GPS 오차보정정보를생성하여전송하고, 사용자단말기가이를인식하여사용자단말기측 GPS 수신기의수신정보를보정하는데 사용함으로써, 정밀한측위성능을얻을수 있다. 즉, 본발명의정밀측위시스템은, GPS 위성으로부터제1 위성신호를수신하여무선 AP에대한항법보정정보를생성하고, 생성된항법보정정보를무선 AP로전송하는 GPS 기준국과, GPS 기준국으로부터항법보정정보를수신하여사용자단말기로송신하는무선 AP와, GPS 위성으로부터제2 위성신호를수신하고, 무선 AP로부터항법보정정보를인식하여, 제2 위성신호와항법보정정보를기반으로정밀한사용자위치정보를생성하는사용자단말기를포함한다.

Abstract translation: 本发明提供一种通过无线接入点（AP）的精确定位装置及其方法。 根据本发明，全球定位系统（GPS）基站生成并发送关于每个无线AP的GPS误差信息，并且用户终端识别GPS误差信息，并使用GPS误差信息来校正接收到的信息 用户终端的GPS接收机; 从而获得精确的定位性能。 所述精确定位装置包括：GPS基站，从GPS卫星接收第一卫星信号，生成关于无线AP的导航校正信息，并将生成的导航校正信息发送给无线AP; 所述无线AP从所述GPS基站接收所述导航校正信息，以向所述用户终端发送所述导航校正信息; 并且所述用户终端从所述GPS卫星接收第二卫星信号，并且从所述无线AP识别所述导航校正信息，以基于所述第二卫星信号和所述导航校正信息生成精确的用户位置信息。

公开(公告)号：KR20090062904A

公开(公告)日：2009-06-17

申请号：KR20070130388

申请日：2007-12-13

Applicant: KOREA ELECTRONICS TELECOMM

Inventor： KANG YEON SU ,  KANG KUN SEOK ,  AHN DO SEOB ,  LEE HO JIN

IPC: H04B7/185

CPC classification number: H04L1/0668

Abstract: A method for transmitting a signal in a satellite communication system with a terrestrial assistant device is provided to apply space-time coding techniques, thereby improving receiving signal quality of an area where a signal of satellite or terrestrial assistant devices can be received. A core network produces the first symbol index and the second symbol index about the first transmission signal and the second transmission signal(S100). The core network generates the first and second transmission data symbols which are alpha and beta(S120). A space-time code is generated based on the first and second symbol indexes and the first and second transmission data symbols(S130). After the space-time code is transmitted to a satellite, the code is transmitted to a terminal through a terrestrial assistant device or transmitted to the terminal from the satellite.

Abstract translation: 提供了一种用于在具有地面辅助设备的卫星通信系统中发送信号的方法以应用空时编码技术，从而提高可以接收卫星或地面辅助设备的信号的区域的接收信号质量。 核心网络产生关于第一传输信号和第二传输信号的第一符号索引和第二符号索引（S100）。 核心网络生成α和β的第一和第二传输数据符号（S120）。 基于第一和第二符号索引以及第一和第二传输数据符号产生时空代码（S130）。 在将空时代码发送到卫星之后，通过地面辅助设备将码发送到终端，或者从卫星发送到终端。