公开(公告)号：KR1020100069550A

公开(公告)日：2010-06-24

申请号：KR1020090068533

申请日：2009-07-27

Applicant: 한국전자통신연구원

Inventor： 곽병재 ,  권동승

IPC: H04L27/34

CPC classification number: H04L27/3416 ,  H04L27/36

Abstract: PURPOSE: A signal modulation device, a transmission method, and a code generating method are provided to maintain information security against an illegal receiver by executing a modulation operation according to a code which has a property of reducing a bit error rate. CONSTITUTION: A code storage part(121) is formed into a plurality of N-bit elements. The code storage part stores a code which has a different number of bits which is n or (n-1) between adjacent two elements. A mapping part(122) maps data to a symbol according to the code. The n number of bits and (n-1) number of bits are sequentially repeated among the adjacent elements. The mapping part arranges the cord in the constellation which uses in-phase as one axis and a quadrature as other axis.

Abstract translation: 目的：提供一种信号调制装置，传输方法和代码生成方法，通过根据具有降低误码率的性能的代码执行调制操作来保护对非法接收机的信息安全。 构成：代码存储部件（121）形成为多个N位元件。 代码存储部件存储在相邻的两个元件之间具有不同数量的位数n或（n-1）的代码。 映射部分（122）根据代码将数据映射到符号。 在相邻元素中顺序地重复n个比特和（n-1）比特。 映射部分将电线布置在使用同相作为一个轴并且正交作为其它轴的星座图中。

公开(公告)号：KR1020100068146A

公开(公告)日：2010-06-22

申请号：KR1020090016799

申请日：2009-02-27

Applicant: 한국전자통신연구원 ,  연세대학교 산학협력단

Inventor： 권동승 ,  예충일 ,  서민식 ,  송영석 ,  곽병재 ,  김지형 ,  신우람 ,  송홍엽 ,  김정현 ,  남미영

IPC: H03M13/11 ,  H03M13/05 ,  H03M13/45

CPC classification number: H03M13/1131 ,  H03M13/45 ,  H03M13/6502

Abstract: PURPOSE: A decoding method and an apparatus thereof, using a dynamic scheduling method for a low-density parity-check code are provided to remarkably reduce a complexity by avoiding an unnecessary calculation and a reordering process. CONSTITUTION: Array reference values of all variable-check messages delivered from a variable node(Vi) to a check node(Cj) are compared each other. The variable-check message having the biggest array reference value is selected through the comparing process. The selected variable-check message is delivered from a first variable node to a first check node. The check-variable message delivered from the first check node to a second variable node is updated. The array reference value of the check-variable message delivered from the second variable node to the second check node based on the updated check-variable message.

Abstract translation: 目的：提供一种使用低密度奇偶校验码的动态调度方法的解码方法及其装置，通过避免不必要的计算和重新排序处理来显着降低复杂度。 构成：将从变量节点（Vi）传递到校验节点（Cj）的所有变量检查消息的数组参考值进行比较。 通过比较过程选择具有最大数组参考值的变量检查消息。 所选择的变量检查消息从第一变量节点递送到第一校验节点。 从第一校验节点传递到第二变量节点的检查变量消息被更新。 基于更新的检查变量消息从第二变量节点传递到第二校验节点的检查变量消息的数组参考值。

公开(公告)号：KR1020100026983A

公开(公告)日：2010-03-10

申请号：KR1020090072511

申请日：2009-08-06

Applicant: 한국전자통신연구원

Inventor： 권동승 ,  곽병재 ,  박범수

IPC: H04L1/18 ,  H04L27/00

CPC classification number: H04L1/1893

Abstract: PURPOSE: A retransmission device and a retransmission method are provided to reduce the number of bits with low reliability by firstly retransmitting the bit transmitted with the relatively low reliability. CONSTITUTION: A channel encoder encodes transmission data(S510). A symbol mapper maps a codeword on a plurality of symbols using a modulation method for initial transmission(S520). A transmitter transmits a packet including the mapped symbols to a receiver(S530). The symbol mapper maps the following codeword on the symbol according to a positive response of the receiver(S540,S550). The symbol mapper selects the modulation method used in the transmission process according to a negative response of the receiver(S560). The symbol mapper selects a retransmission bit among the codeword(S570). The transmitter transmits the packet including the mapped symbols to the receiver(S590).

Abstract translation: 目的：提供一种重发装置和重传方法，通过首先重传以相对低的可靠性发送的比特来减少具有低可靠性的比特数。 构成：通道编码器对传输数据进行编码（S510）。 符号映射器使用用于初始传输的调制方法来对多个符号上的码字进行映射（S520）。 发射机将包括映射符号的包发送到接收机（S530）。 符号映射器根据接收器的肯定响应（S540，S550），对符号上的下列代码字进行映射。 符号映射器根据接收机的负响应来选择在传输过程中使用的调制方法（S560）。 符号映射器选择码字中的重发位（S570）。 发射机将包括映射符号的分组发送到接收机（S590）。

公开(公告)号：KR1020090116627A

公开(公告)日：2009-11-11

申请号：KR1020090037197

申请日：2009-04-28

Applicant: 한국전자통신연구원

Inventor： 예충일 ,  곽병재 ,  권동승 ,  안지환

IPC: H04W72/04 ,  H04L27/26

CPC classification number: H04L5/0053 ,  H04J3/0682 ,  H04L5/0048 ,  H04L5/0091 ,  H04L25/0224

Abstract: PURPOSE: A resource allocation method and a ranging channel configuring method are provided to reduce the radio wave resource directly required for the initial ranging, handover ranging and periodic ranging channels. CONSTITUTION: A resource for the ranging is allocated to a terminal. A ranging channel including the identifier of the terminal and plural pilots is received from a terminal belonging to a base station. Based on the identifier, the terminal is grasped. Based on the pilots, the channel estimation and the round trip delay of the terminal are measured. In case the terminal is handed over to the base station, the ranging channel includes the identifier of a previous base station.

Abstract translation: 目的：提供资源分配方法和测距信道配置方法，以减少初始测距，切换测距和周期性测距信道直接需要的无线电波资源。 规定：测距的资源分配给终端。 从属于基站的终端接收包括终端的标识符和多个导频的测距信道。 基于标识符，掌握终端。 基于导频，测量终端的信道估计和往返延迟。 在终端切换到基站的情况下，测距信道包括先前基站的标识符。

公开(公告)号：KR1020090116602A

公开(公告)日：2009-11-11

申请号：KR1020080087913

申请日：2008-09-05

Applicant: 한국전자통신연구원

Inventor： 예충일 ,  곽병재 ,  권동승 ,  안지환

IPC: H04B7/26 ,  H04L27/26

CPC classification number: H04L5/0053 ,  H04J3/0682 ,  H04L5/0048 ,  H04L5/0091 ,  H04L25/0224 ,  H04J11/00 ,  H04W72/0493

Abstract: PURPOSE: A method for performing the ranging and network entry at the same time is provided to process the network entry and handover of an AT at high speed when realizing the uplink synchronization. CONSTITUTION: A sufficiently large CP is used so that subcarriers assigned to an Initial/Handover ranging channel can receive an RTD and the maximum channel delay. Information which an Initial ranging channel transmits includes an ATID(Access Terminal Identification). Information in which a handover ranging channel transmits includes not only ATID but also an APIDof a serving cell. The Initial/Handover ranging channel transmits specific pilot pattern consisting of neighboring subcarriers so that an AP can measure the RTD of the AT.

Abstract translation: 目的：提供同时进行测距和网络入口的方法，以便在实现上行链路同步时高速处理AT的网络进入和切换。 构成：使用足够大的CP，使得分配给初始/切换测距信道的子载波可以接收RTD和最大信道延迟。 初始测距信道发送的信息包括ATID（接入终端识别）。 切换测距信道发送的信息不仅包括ATID，还包括服务小区的APID。 初始/切换测距信道发送由相邻子载波组成的特定导频模式，使得AP可以测量AT的RTD。

公开(公告)号：KR1020090065167A

公开(公告)日：2009-06-22

申请号：KR1020070132628

申请日：2007-12-17

Applicant: 한국전자통신연구원 ,  삼성전자주식회사

Inventor： 김지형 ,  곽병재 ,  권동승 ,  김세진 ,  장민석 ,  홍인기

IPC: H04B7/26

CPC classification number: H04W52/242 ,  H04W52/146 ,  H04W52/243 ,  H04J11/0023 ,  H04L5/0007 ,  H04W24/00

Abstract: A method of controlling uplink power is provided to specifically reflect an interference state of a monitoring sector to an uplink power control value, thereby improving performance of controlling uplink power. An index and a path attenuation difference corresponding to a monitoring sector of a mobile station(100) are received from the mobile station. The amount of interference of the monitoring sector is received from a base station(300) of the monitoring sector. A control value of uplink power is obtained by using the amount of interference and the path attenuation difference. A control value of the uplink power is transmitted to the mobile station.

Abstract translation: 提供一种控制上行链路功率的方法，以特定地将监视扇区的干扰状态反映到上行链路功率控制值，从而提高控制上行链路功率的性能。 从移动台接收与移动台（100）的监视扇区对应的索引和路径衰减差。 从监视扇区的基站（300）接收监视扇区的干扰量。 通过使用干扰量和路径衰减差来获得上行链路功率的控制值。 将上行链路功率的控制值发送到移动台。

公开(公告)号：KR1020090044949A

公开(公告)日：2009-05-07

申请号：KR1020070130387

申请日：2007-12-13

Applicant: 한국전자통신연구원 ,  삼성전자주식회사

Inventor： 예충일 ,  최인경 ,  송영석 ,  이승준 ,  곽병재 ,  김지형 ,  권동승 ,  김준두 ,  강지원 ,  이충용

IPC: H04L1/06 ,  H04B7/26

CPC classification number: H04B7/0413 ,  H04B7/0465 ,  H04L25/03343 ,  H04L2025/0342 ,  H04L2025/03426 ,  H04B7/0456

Abstract: Disclosed is a transmitting/receiving method in a multi-user multiple-input multiple-output (MU-MIMO) channel. The transmitting method includes: performing QR decomposition on a Hermitian transpose matrix of a channel matrix to obtain a first matrix and a second matrix as a triangular matrix; obtaining a preprocessing matrix by using the first matrix; and forming an effective channel based on the preprocessing matrix by a block triangulation technique.

公开(公告)号：KR1020080037445A

公开(公告)日：2008-04-30

申请号：KR1020060104610

申请日：2006-10-26

Applicant: 한국전자통신연구원

Inventor： 오정열 ,  김재영 ,  곽병재

IPC: H04L27/18 ,  H04L27/22 ,  H04L27/26 ,  H04L27/32

CPC classification number: H04L27/2071 ,  H04B1/7075 ,  H04B2001/70706 ,  H04L27/0014 ,  H04L27/2331 ,  H04L2027/0055 ,  H04L2027/0067

Abstract: An apparatus and a method for recovering carrier frequency are provided to execute demodulation irrespective of the magnitude of frequency offset by recovering the carrier frequency using phase shift due to the effect of the frequency offset. An apparatus for recovering carrier frequency using phase shift includes a phase shift estimation unit(600), a compensating unit(620), and a recovering unit(630). The phase shift estimation unit estimates phase shift due to the effect of the frequency offset using received preamble signals. The compensating unit compensates for pre-differential decoding receive signals using estimated phase shift in the phase shift estimation unit. The recovering unit recovers the compensated signals in the compensating unit.

Abstract translation: 提供一种用于恢复载波频率的装置和方法，以便通过由于频率偏移的影响使用相移来恢复载波频率而与频偏的大小无关地执行解调。 使用相移来恢复载波的装置包括相移估计单元（600），补偿单元（620）和恢复单元（630）。 相移估计单元使用接收到的前导码信号来估计由于频率偏移的影响引起的相移。 补偿单元使用相移估计单元中的估计相移补偿预差分解码接收信号。 恢复单元恢复补偿单元中的补偿信号。

公开(公告)号：KR100691288B1

公开(公告)日：2007-03-12

申请号：KR1020060041670

申请日：2006-05-09

Applicant: 한국전자통신연구원

Inventor： 곽병재 ,  송나옥 ,  김재영

IPC: H04L12/28 ,  H04L29/06

Abstract: A conversion method into a coordinator from devices on a PicoNet is provided to enable the devices to sense that a PNC(PicoNet Coordinator) secedes from the PicoNet without performing a normal PNC handover procedure, for conversion into a new coordinator without influencing a service within the PicoNet. Up-to-date priority information is received from a PNC(301). P-CTA(Pseudo-static Channel Time Allocation) given to devices on a PicoNet is confirmed through a beacon of a superframe previously received from the PNC(302). As a new beacon is not received from the PNC, beacon non-reception notification information transmitted between the devices is detected during the confirmed P-CTA(303). As the beacon non-reception notification information is not detected, the devices do not convert into the PNC(304). As the beacon non-reception notification information is received, it is decided that the PNC secedes from the PicoNet without performing a normal PNC handover procedure, and the devices convert into the PNC according to top priority(305).

Abstract translation: 提供了一种从PicoNet上的设备转换为协调器的方法，以使设备能够感知PNC（PicoNet协调器）从PicoNet中脱离而不执行正常的PNC切换过程，用于转换为新的协调器而不影响 微微网。 从PNC（301）接收最新的优先级信息。 给予PicoNet上的设备的P-CTA（伪静态信道时间分配）通过先前从PNC接收到的超帧的信标来确认（302）。 由于没有从PNC接收新的信标，所以在确认的P-CTA期间检测到在设备之间传送的信标未接收通知信息（303）。 由于未检测到信标非接收通知信息，所以设备不转换成PNC（304）。 当接收到信标未接收通知信息时，确定PNC从PicoNet中脱离而不执行正常的PNC切换过程，并且设备根据最高优先级转换成PNC（305）。