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公开(公告)号：KR1020110002783A
公开(公告)日：2011-01-10
申请号：KR1020100042096
申请日：2010-05-04
Abstract: PURPOSE: A femto cell base-station apparatus and a self-configuring method thereof are provided to detect a neighbor macro cell and a femto cell environment without the control of an external control device or a macro cell base station. CONSTITUTION: A preamble extraction unit(420) extracts a first macro cell preamble from the signals of a femto cell and an adjacent macro cell, and a power allocation unit(430) sets the transmission power through the first macro cell preamble. A preamble selection unit(440) selects a second femto cell preamble from the first macro preamble. A header generating unit(550) generates a header of a femto cell control signal, and a resource allocation unit(560) allocates the resources for the transmission of the data from the femto cell.
Abstract translation: 目的：提供一种毫微微小区基站装置及其自配置方法，用于在外部控制装置或宏小区基站的控制下检测相邻宏小区和毫微微小区环境。 构成：前导码提取单元（420）从毫微微小区和相邻宏小区的信号中提取第一宏小区前导码，功率分配单元（430）通过第一宏小区前导码设定发送功率。 前导码选择单元（440）从第一宏前导码中选择第二毫微微小区前导码。 标题生成单元（550）生成毫微微小区控制信号的标题，资源分配单元（560）从毫微微小区分配用于发送数据的资源。
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公开(公告)号：KR100796008B1
公开(公告)日：2008-01-21
申请号：KR1020060074143
申请日：2006-08-07
Applicant: 한국전자통신연구원 , 연세대학교 산학협력단
CPC classification number: H04L5/0007 , H04L1/0019 , H04L25/0224
Abstract: 단말 수신 장치는 수신 신호에 설정된 적응 송신 방식에 따라 복수의 채널 정보 중 적어도 하나의 채널 정보를 기지국 송신 장치로 송신한다. 그리고 단말 수신 장치는 복수의 채널 정보에 기초하여 생성된 채널 상태 정보를 매우 긴 주기로 하여 기지국 송신 장치로 전송한다. 기지국 송신 장치에서는 수신된 채널 상태 정보와 채널 상태 정보에 대응하는 적어도 하나의 채널 정보를 사용하여 다수의 적응 송신 방식 중 하나의 적응 송신 방식을 사용하여 트래픽 데이터를 단말 수신 장치로 전송한다. 이와 같이, 수신 신호에 설정된 적응 송신 방식에 따라 기지국 송신 장치로 송신하는 채널 정보의 양을 달리 함으로써, 궤환되는 채널 정보의 양을 최소화할 수 있으며 시스템 용량 증대를 가져올 수 있다.
무선 채널, 다중 경로, SNR, 채널 정보, 파일럿, 추정, 예측 채널 정보-
3.发明授权이동 통신 시스템에서의 하향링크 신호의 구성 방법과동기화 방법 및 그 장치 그리고 이를 이용한 셀 탐색 방법 失效移动通信系统中的下行链路信号的方法和装置的同步和同步以及使用该方法的小区的搜索方法
公开(公告)号：KR100479864B1
公开(公告)日：2005-03-31
申请号：KR1020020073789
申请日：2002-11-26
Applicant: 한국전자통신연구원 , 학교법인 중앙대학교
IPC: H04B7/26
CPC classification number: H04L27/2656 , H04L5/0023 , H04L5/0048 , H04L5/0053 , H04L27/2613 , H04L27/2657 , H04L27/2662 , H04L27/2678
Abstract: 직교 주파수 분할 다중 접속 기반의 셀룰러 시스템에서, 하향링크 신호의 한 프레임이 하나의 공통 슬롯과 복수의 트래픽 슬롯으로 이루어진다. 공통 슬롯은 동기화 프리앰블과 셀 탐색 프리앰블을 포함한다. 동기화 프리앰블은 시간 및 주파수 동기를 맞추기에 적합한 구조를 가지며, 셀 탐색 프리앰블은 셀 탐색에 적합한 구조를 가진다. 그리고 트래픽 슬롯에는 시간축과 주파수축으로 분산된 파일럿 심볼이 형성되어 있다. 이때, 먼저 OFDM 송신 신호의 주기적 프리픽스를 이용하여 초기 심볼 동기를 추정하고, 추정된 초기 심볼 동기와 동기화 프리앰블을 이용하여 프레임 동기를 한다. 다음, 동기화 프리앰블과 셀 탐색 프리앰블을 이용하여 시간 및 주파수 동기를 추정한다. 그리고 시간 및 주파수 동기가 맞추어진 후 셀 탐색 프리앰블을 이용하여 셀 탐색을 추정한다. 초기 동기화를 수행한 다음에, OFDM 송신 신호의 주기적 프리픽스를 이용하여 주파수 추적을 수행하고 동기화 프리앰블을 이용하여 심볼 동기 추적을 수행한다. 그리고 셀 탐색 프리앰블을 이용하여 미세 주파수 동기를 추적한다.
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公开(公告)号：KR1020040085680A
公开(公告)日：2004-10-08
申请号：KR1020030020464
申请日：2003-04-01
Applicant: 한국전자통신연구원
IPC: H04B7/04
CPC classification number: H04L1/0003 , H04B7/0417 , H04B7/0669 , H04B7/0689 , H04B7/0697 , H04L1/0009 , H04L1/0015 , H04L1/0026 , H04L1/0618 , Y02D70/1244 , Y02D70/142 , Y02D70/444
Abstract: PURPOSE: An adaptive transceiving device in a multiple antenna wireless communication system is provided to configure a main transmission mode based on a spatial multiplexing antenna transmission technique and a spatial coding antenna transmission technique, to adaptively change a coding rate, a modulation technique, and an antenna transmission technique according to an MIMO(Multiple Input Multiple Output) channel environment, thereby increasing transmission efficiency of data. CONSTITUTION: An adaptive transmission controller(2200) determines main transmission mode and sub transmission mode information. A transmission mode block(2100) transmits input data according to a data rate determined by the mode information. The transmission mode block(2100) comprises as follows. A channel coder(2110) codes the input data. A sub transmission mode 0 block(2130) performs a symbol mapping and an antenna mapping for a sub transmission mode 0. A sub transmission mode 1 block(2140) performs a symbol mapping and an antenna mapping for a sub transmission mode 1. A demultiplexer(2120) connects the channel coder(2110) with one of the sub transmission mode blocks(2130,2140). A multiplexer(2150) selects one of outputs of the two sub transmission mode blocks(2130,2140) according to the sub transmission mode information outputted from the adaptive transmission controller(2200).
Abstract translation: 目的：提供一种多天线无线通信系统中的自适应收发设备，用于配置基于空间复用天线传输技术和空间编码天线传输技术的主传输模式，自适应地改变编码率，调制技术和 根据MIMO（多输入多输出）信道环境的天线传输技术，从而提高数据的传输效率。 构成：自适应传输控制器（2200）确定主传输模式和子传输模式信息。 发送模式块（2100）根据由模式信息确定的数据速率发送输入数据。 传输模式块（2100）包括如下。 通道编码器（2110）对输入数据进行编码。 子传输模式0块（2130）执行子传输模式0的符号映射和天线映射。子传输模式1块（2140）执行子传输模式1的符号映射和天线映射。解复用器 （2120）将信道编码器（2110）与子传输模式块（2130,2140）之一连接。 复用器（2150）根据从自适应传输控制器（2200）输出的子传输模式信息，选择两个子传输模式块（2130,2140）的输出之一。
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公开(公告)号：KR1020040056972A
公开(公告)日：2004-07-01
申请号：KR1020020083721
申请日：2002-12-24
Applicant: 한국전자통신연구원
IPC: H03M13/11
CPC classification number: H04L1/0057 , H03M13/1117 , H04L1/0045
Abstract: PURPOSE: A message-passing decoder for LDPC(Low-Density Parity-Check) codes is provided to perform a calculation process within a short period of time by sharing resources of an adder and a shifter. CONSTITUTION: A message-passing decoder for LDPC codes includes a log-likelihood ratio calculator, a parity-check message calculator, and a parity-checker. The log-likelihood ratio calculator is used for receiving codewords having continuous values from LDPC-coded block codes and calculating a log-likelihood ratio. The parity-check message calculator is used for calculating a bit message by using the log-likelihood ratio and a parity-check message. The parity-checker is used for checking the parity of the decoded codewords.
Abstract translation: 目的：提供一种用于LDPC（低密度奇偶校验）码的消息传递解码器，用于通过共享加法器和移位器的资源在短时间内执行计算处理。 构成：用于LDPC码的消息传递解码器包括对数似然比计算器，奇偶校验消息计算器和奇偶校验器。 对数似然比计算器用于从LDPC编码块码接收具有连续值的码字并计算对数似然比。 奇偶校验消息计算器用于通过使用对数似然比和奇偶校验消息来计算比特消息。 奇偶检验器用于检查解码码字的奇偶性。
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Patent Agency Ranking
公开(公告)号：KR1020040051904A
公开(公告)日：2004-06-19
申请号：KR1020020079598
申请日：2002-12-13
Applicant: 한국전자통신연구원
IPC: H04J11/00
CPC classification number: H04J11/0026 , H04L1/0618 , H04L5/0023 , H04L5/0046 , H04L5/0048 , H04L5/005 , H04L5/006 , H04L5/0085 , H04L5/06 , H04L25/0204 , H04L25/0226 , H04L27/2602
Abstract: PURPOSE: A method and an apparatus for constructing the signal to down link of a cellular system based on OFDMA are provided to reduce the transmission power consumption and the overhead by arranging appropriate pilot symbols. CONSTITUTION: A method and an apparatus for constructing the signal to down link of a cellular system based on OFDMA includes the steps of: (s210) performing the encoding, interleaving and symbol mapping to the data of the common channel and the control channel and disposing a basic pilot symbol required to the demodulation of the common channel and the control channel to the time, frequency and antenna; (s220) determining the transmission method of each user in response to the moving speed, channel information and traffic demand by receiving the data to be transmitted to the traffic channel of the user; (s230) determining the additional pilot symbol additionally required for demodulating the traffic channel in response to the transmission method and the moving speed; and (s240) performing the encoding, interleaving and symbol mapping to the data of the traffic channel in response to the transmission method and disposing the mapped symbol and the additional pilot symbol in response to the frequency and antenna.
Abstract translation: 目的：提供一种用于构建基于OFDMA的蜂窝系统的信号下行链路的方法和装置，以通过布置适当的导频符号来减少传输功耗和开销。 构成：用于构建基于OFDMA的蜂窝系统的信号向下链路的方法和装置包括以下步骤：（s210）对公共信道和控制信道的数据进行编码，交织和符号映射，并且处理 将公共信道和控制信道解调到时间，频率和天线所需的基本导频符号; （s220）通过接收要发送到用户的业务信道的数据来响应于移动速度，信道信息和业务需求来确定每个用户的传输方法; （s230）响应于所述传输方法和所述移动速度确定另外需要解调所述业务信道的附加导频符号; 和（s240）响应于传输方法执行编码，交织和符号映射到业务信道的数据，并响应于频率和天线布置映射符号和附加导频符号。
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公开(公告)号：KR100423723B1
公开(公告)日：2004-03-22
申请号：KR1020010077011
申请日：2001-12-06
Applicant: 한국전자통신연구원
IPC: H04B1/711
Abstract: PURPOSE: A dynamic allocation search device using a time division method is provided to allocate a sub-search device to another user in a suitable time although a conventional user does not release the allocation of the sub-search device. CONSTITUTION: A user information transmitting unit(22) transmits information of several users, which it is necessary for retrieving a multi-path, to a plurality of search device engine control units(23). A plurality of search device engine control units(23) receive several user information from the user information transmitting unit(22), and control the allocation, reallocation, cancellation operation of a plurality of search device engine units(25). A plurality of search device engine units(25) are divided in time and are operated for despreading signals received through the multi-path and coherently accumulating the despreaded signals by a symbol unit. A unit symbol accumulation storing unit(26) stores coherently accumulated unit symbols of another user, which are simultaneously transmitted from a plurality of search device engine units(25). A unit symbol signal control unit(24) controls the unit symbol accumulation storing unit(26) for successively transmitting unit symbol accumulation signals stored in the unit symbol accumulation storing unit(26) to a path arrangement and decision unit(27), and controls the path arrangement and decision unit(27). The path arrangement and decision unit(27) coherently accumulates each user-classified unit symbol accumulation signal outputted from the unit symbol accumulation storing unit(26), arranges the accumulated results, and decides an offset of the signal inputted through the multi-path.
Abstract translation: 目的：提供一种使用时分方法的动态分配搜索装置，以便在适当的时间将子搜索装置分配给另一用户，尽管常规用户不释放子搜索装置的分配。 组成：用户信息传输单元（22）向多个搜索设备引擎控制单元（23）传输多个用户的信息，这些信息是检索多路径所必需的。 多个搜索设备引擎控制单元（23）从用户信息传输单元（22）接收多个用户信息，并控制多个搜索设备引擎单元（25）的分配，重新分配和取消操作。 多个搜索设备引擎单元（25）在时间上被分开并且被操作用于解扩通过多路径接收的信号并且通过符号单元相干地累积解扩的信号。 单位符号累积存储单元（26）存储从多个搜索装置引擎单元（25）同时发送的另一用户的相干累积的单位符号。 单元符号信号控制单元（24）控制单元符号累积存储单元（26），用于将存储在单元符号累积存储单元（26）中的单位符号累加信号依次发送到路径排列和决定单元（27），并且控制 路径安排和决定单元（27）。 路径配置和判定单元（27）相干地累积从单位符号累积存储单元（26）输出的每个用户分类单位符号累加信号，排列累积结果，并确定通过多路径输入的信号的偏移。
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公开(公告)号：KR1020030056307A
公开(公告)日：2003-07-04
申请号：KR1020010086506
申请日：2001-12-28
Applicant: 한국전자통신연구원
IPC: H04B7/155
CPC classification number: H04B7/15521
Abstract: PURPOSE: A wireless base station system for a mobile communication is provided to simplify the configuration of a base station in order to increase the efficiency of the base station. be simply and efficiently composed because it is unnecessary for a module for IF(Intermediate Frequency) conversion. CONSTITUTION: A BSC(Base Station Controller) interface unit(110) performs an interface with a BSC(30) by wire, and converts internal data of a base station into data suitable for the BSC(30). A baseband modulating and demodulating unit(120) modulates and demodulates a baseband signal, and encodes or decodes a channel. A combining and baseband signal converting unit(130) adds a baseband digital signal of a multi-channel and converts the baseband digital signal into a baseband analog signal. The combining and baseband signal converting unit(130) converts a baseband analog signal into a baseband digital signal. A direct RF(Radio Frequency) signal processing unit(140) amplifies an RF signal, filters a band of the amplified RF signal, directly mixes a baseband analog signal of the RF signal with a carrier frequency, and modulates the mixed signal. A base station control unit(150) initializes the base station, manages resources of the base station, and controls a call process. A clock generating and distributing unit(160) generates a synchronous clock and distributes the synchronous clock to the BSC interface unit(110), the baseband modulating and demodulating unit(120), the combining and baseband signal converting unit(130), the direct RF signal processing unit(140), and the base station control unit(150). A switch unit(170) relays a high-speed packet message communication among the BSC interface unit(110), the baseband modulating and demodulating unit(120), and the base station control unit(150).
Abstract translation: 目的：提供用于移动通信的无线基站系统，以简化基站的配置，以提高基站的效率。 由于不需要用于IF（中频）转换的模块，所以要简单有效地组合。 构成：BSC（基站控制器）接口单元（110）通过有线地与BSC（30）进行接口，并且将基站的内部数据转换成适用于BSC（30）的数据。 基带调制和解调单元（120）对基带信号进行调制和解调，并对信道进行编码或解码。 组合和基带信号转换单元（130）将多通道的基带数字信号相加，并将基带数字信号转换为基带模拟信号。 组合和基带信号转换单元（130）将基带模拟信号转换成基带数字信号。 直接RF（射频）信号处理单元（140）放大RF信号，对放大的RF信号的频带进行滤波，将RF信号的基带模拟信号与载波频率直接混合，并调制混合信号。 基站控制单元（150）初始化基站，管理基站的资源，并控制呼叫处理。 时钟发生和分配单元（160）产生同步时钟并将同步时钟分配给BSC接口单元（110），基带调制和解调单元（120），组合和基带信号转换单元（130），直接 RF信号处理单元（140）和基站控制单元（150）。 开关单元（170）在BSC接口单元（110），基带调制和解调单元（120）以及基站控制单元（150）之间中继高速分组消息通信。
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公开(公告)号：KR1020100048875A
公开(公告)日：2010-05-11
申请号：KR1020090092599
申请日：2009-09-29
CPC classification number: H04W52/244
Abstract: PURPOSE: A femto cell base-station apparatus and a self-configuring method thereof are provided to minimize damage to macro cells by performing self-configuration to minimize interference to adjacent macro cells or other femto cells and allowing the femto cells to maximally secure its own area, and a self-configuring method thereof. CONSTITUTION: A femto cell base station apparatus(1) includes an antenna(100), a wireless signal transmitting/receiving unit(200), a transmitting/receiving separator(300), a receiver(400), a preamble extractor(500), a power allocator(600), a preamble selector(700), a resource allocator(800), a demodulator(900), an inverse frame generator(1000), a decoder(1100), a preamble generator(1200), a modulator(1300), a frame generator(1400), and a transmitter(1500). The wireless signal transmitting/receiving unit transmits/receives signals from femto cells and macro cells through the antenna. The transmitting/receiving separator separates received signals that are applied from the antenna and signals that are transmitted from the transmitter. The receiver receives the signals from the femto cells and the macro cells that are separated by the transmitting/receiving separator. The preamble extractor extracts preambles from the signals from the femto cells and the macro cells that are received by the receiver. They are then separated into signals corresponding to the femto cells and signals corresponding to the macro cells. The signals from the femto cells are transmitted to the demodulator 900 and the signals from the macro cells and the femto cells are transferred to the power allocator. The power allocator allocates the transmission power of the femto cell base station apparatus during an initialization step.
Abstract translation: 目的：提供毫微微小区基站装置及其自配置方法，以通过执行自配置来最小化对宏小区的损害以最小化对相邻宏小区或其他毫微微小区的干扰，并允许毫微微小区最大限度地保护其自身 区域及其自身配置方法。 毫微微小区基站装置（1）包括天线（100），无线信号发送/接收单元（200），发送/接收分离器（300），接收机（400），前导提取器（500） 功率分配器（600），前导选择器（700），资源分配器（800），解调器（900），逆帧发生器（1000），解码器（1100），前导码生成器（1200） 调制器（1300），帧发生器（1400）和发射机（1500）。 无线信号发送/接收单元通过天线从毫微微小区和宏小区发送/接收信号。 发送/接收分离器分离从天线施加的接收信号和从发送器发送的信号。 接收器接收来自毫微微小区和由发射/接收分离器分离的宏小区的信号。 前导提取器从来自毫微微小区的信号和由接收机接收的宏小区提取前导码。 然后将它们分离成对应于毫微微小区的信号和对应于宏小区的信号。 来自毫微微小区的信号被发送到解调器900，并且来自宏小区和毫微微小区的信号被传送到功率分配器。 功率分配器在初始化步骤期间分配毫微微小区基站装置的发送功率。
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