公开(公告)号：WO2009075479A3

公开(公告)日：2009-08-13

申请号：PCT/KR2008006580

申请日：2008-11-07

Applicant: KOREA ELECTRONICS TELECOMM ,  KANG YEON SU ,  KANG KUN SEOK ,  AHN DO-SEOB ,  LEE HO JIN

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

IPC: H04B7/26 ,  H04B17/40

CPC classification number: H04B7/18539 ,  H04B7/2606 ,  H04W72/085 ,  H04W84/047 ,  H04W88/04

Abstract: The present invention relates to a system and method of reusing radio resources capable of improving radio resource efficiency. According to an embodiment of the present invention, in a communication system including a repeater that retransmits signals transmitted from a satellite to user terminals, it is possible to reuse some of the radio resources used in a wide area coverage, such as the satellite, in a repeater coverage. Therefore, it is possible to ensure radio resources such that repeater data can be transmitted to user terminals without additional radio resources.

Abstract translation: 本发明涉及能够提高无线资源效率的重用无线资源的系统和方法。 根据本发明的实施例，在包括转发器的通信系统中，该转发器将从卫星发送的信号转发到用户终端，可以重新使用广域覆盖中使用的一些无线电资源，例如卫星， 中继器覆盖。 因此，可以确保无线电资源，使得可以在不需要额外无线电资源的情况下将中继器数据发送到用户终端。

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：KR20120071591A

公开(公告)日：2012-07-03

申请号：KR20100133194

申请日：2010-12-23

Applicant: KOREA ELECTRONICS TELECOMM ,  NAT UNIV KONGJU IND ACAD COOP

Inventor： KANG KUN SEOK ,  KIM WON HO ,  LEE YONG MIN ,  KU BON JUN

IPC: H04B7/185 ,  H04L12/931

CPC classification number: H04B7/18526 ,  H04L49/201

Abstract: PURPOSE: A satellite on-board baseband packet switching apparatus for multiple beams satellite communication is provided to reduce construction costs of a communication system by embodying a single on-board baseband packet switching apparatus. CONSTITUTION: A first input unit(210) changes first external data into a first data format. A second input unit(250) changes second external data into a second data format. A first output unit(220)changes a first output signal into an external data format. A second output unit(240) changes a second output signal into a second external data format. A CPU(Central Processing Unit)(230) executes a path control function by using a packet switching method between a first and a second output signal.

Abstract translation: 目的：提供一种用于多波束卫星通信的卫星车载基带分组交换装置，通过体现单个基板分组交换装置来降低通信系统的建设成本。 构成：第一输入单元（210）将第一外部数据改变为第一数据格式。 第二输入单元（250）将第二外部数据改变为第二数据格式。 第一输出单元（220）将第一输出信号改变为外部数据格式。 第二输出单元（240）将第二输出信号改变为第二外部数据格式。 CPU（中央处理单元）（230）通过使用第一和第二输出信号之间的分组交换方法来执行路径控制功能。

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。