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公开(公告)号：KR1020050065244A
公开(公告)日：2005-06-29
申请号：KR1020040015784
申请日：2004-03-09
Applicant: 한국전자통신연구원
Abstract: 본 발명은 WCDMA(Wideband CDMA) 이동통신 시스템에 있어서, 스마트 안테나(Smart Antenna: SA)를 구비한 기지국의 시험분석 장치와 방법, 및 프로토콜 구조에 관한 것이다. 본 발명에 따른 스마트 안테나를 구비한 기지국의 시험분석장치는 시험분석장치 본체 및 시험분석장치 정합부로 이루어지며, 상기 시험분석장치 본체는, 기지국에 바로 접속하여 시스템의 성능을 감시하도록 시험 호를 발생시키는 사용자 정합장치; 시험 호에 대응하는 프로토콜을 선택하고, 프로토콜에 대한 신호 메시지를 분석하여 호 설정 절차를 감시하고, 시험 호를 처리하여 트래픽을 분석하며, 그 결과에 따라 트래픽 품질을 감시하는 시험 호 처리부; 선택된 프로토콜에 사용되는 신호 메시지를 발생하는 프로토콜 처리부; 시험 호 처리부에서 처리된 성능 데이터를 분석하여 처리하는 데이터 처리부; 및 시험분석장치 정합부와 통신하여, 프로토콜 신호 메시지, 트래픽 및 성능 데이터를 주고받는 네트워크 정합장치를 포함할 수 있다. 본 발명에 따르면, 운용자는 상용 단말기와 통신하면서 간편하고 편리하게 대용량의 이동통신 멀티미디어 호를 만들 수 있을 뿐만 아니라 각 호별 서비스 품질과 함께 시스템의 기능 및 성능을 효과적으로 진단할 수 있다.
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公开(公告)号：KR1020050063429A
公开(公告)日：2005-06-28
申请号：KR1020030094833
申请日：2003-12-22
Applicant: 한국전자통신연구원
IPC: H04B1/7136 , H04J13/10
Abstract: 본 발명은, 주파수도약코드를 이용하여 MC-CDMA 시스템의 코드채널을 최대화 할 수 있는 부호분할 다중접속시스템의 송신장치를 제공한다.
본 발명에 따르면, 부호화되어 직렬로 입력되는 데이터를 특정 수의 병렬데이터로 변환한 후, 그 알파벳 크기가 부반송파의 총수를 2차원 확산코드의 주파수영역의 확산인자로 나눈 값으로 결정되는 주파수도약코드를 이용하여 상기 병렬데이터에 부반송파를 연결하여 주파수를 도약시킨다. 그리고 시간영역의 확산인자 및 주파수 영역의 확산인자에 의해 생성된 2차원 확산코드를 이용하여, 상기 병렬데이터가 연결된 부반송파들 각각에 대하여 확산된 신호를 생성한다. 이렇게 확산된 신호를 역고속푸리에변환한 후 송신한다.
본 발명에 따르면, 다중 반송파 부호분할 다중접속 시스템에서 2차원 확산된 신호를 주파수 도약 코드를 이용하여 주파수 도약을 하게 함으로서 코드채널용량를 최대화하고 주파수 선택적 무선 페이딩 채널 환경에서 시스템의 성능을 향상시켜 시스템 용량을 증대시킬 수 있다.-
公开(公告)号：KR100421413B1
公开(公告)日：2004-03-09
申请号：KR1020010068509
申请日：2001-11-05
Applicant: 한국전자통신연구원
IPC: H04B1/76
Abstract: PURPOSE: A device for measuring a signal to interference ratio using a division-despread pilot symbol in a CDMA system and a method thereof are provided to variably control a section of despreading a pilot symbol received from a terminal, and to division-despread the section, thereby increasing samples of measurable pilot symbols and exactly calculating a signal to interference ratio. CONSTITUTION: A pilot symbol despreader(101) receives a pilot symbol, and performs a division-despreading process by variably controlling a despreading section to be smaller than a spread coefficient, then increases samples of measurable pilot symbols. A coherent demodulator(102) coherent-demodulates a despread pilot symbol inputted from the pilot symbol despreader(101). A signal to interference ratio measurer(103) inputs the coherent-demodulated pilot symbol from the coherent demodulator(102), and measures a signal to interference ratio.
Abstract translation: 目的：提供一种在CDMA系统中使用分解 - 解扩扩频导频符号测量信号干扰比的装置及其方法，用于可变地控制从终端接收的导频符号的解扩部分，并且对该部分进行分解 - 解扩展 由此增加可测量的导频符号的样本并精确地计算信号与干扰比。 构成：导频码元解扩器（101）接收导频码元，并通过可变地控制解扩部分使其小于扩展系数来执行除法 - 解扩处理，然后增加可测量导频码元的样本。 相干解调器（102）对从导频符号解扩器（101）输入的解扩导频符号进行相干解调。 信号干扰比测量器（103）输入来自相干解调器（102）的相干解调导频符号，并测量信号干扰比。
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公开(公告)号：KR1020040005251A
公开(公告)日：2004-01-16
申请号：KR1020020039739
申请日：2002-07-09
Applicant: 한국전자통신연구원
IPC: H04B7/04
CPC classification number: H04B7/0617 , H04B7/0634 , H04W16/28
Abstract: PURPOSE: A system for forming a beam through mobile communication and a method therefor are provided to obtain azimuth power distributions with two array antennas while estimating reverse signal directions, and to estimate all multiple paths, thereby increasing accuracy and simultaneously obtaining beam forming gains and diversity gains. CONSTITUTION: A base station receiving device averages receiving power values by angle, and estimates signal directions. A base station transmission device orients each array antenna(101,102) toward the estimated signal directions, converts digital data into analog data, and transmits the analog data. The base station receiving device comprises as follows. An antenna unit(110) consists of the two antennas(101,102). A multiple channel down converter(120) down-converts reverse signals to each baseband digital signal. A correlation vector estimator(130) estimates correlation vectors. A direction estimator(140) obtains receiving power distributions by angle, obtains azimuth power distributions, and estimates multiple path directions. A transmission beam forming weight operator(150) operates transmission beam forming weight.
Abstract translation: 目的：提供一种用于通过移动通信形成光束的系统及其方法，用于在估计反向信号方向时获得具有两个阵列天线的方位功率分布，并估计所有多个路径，从而提高精度并同时获得波束形成增益和分集 收益。 构成：基站接收装置以角度平均接收功率值，并估计信号方向。 基站传输装置将每个阵列天线（101,102）定向到估计的信号方向，将数字数据转换为模拟数据，并发送模拟数据。 基站接收装置包括如下。 天线单元（110）由两个天线（101,102）组成。 多通道下变换器（120）将反向信号下变频到每个基带数字信号。 相关矢量估计器（130）估计相关矢量。 方向估计器（140）以角度获得接收功率分布，获得方位功率分布，并估计多个路径方向。 传输光束形成权重操作器（150）操作传输光束形成权重。
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公开(公告)号：KR100381012B1
公开(公告)日：2003-08-19
申请号：KR1019980016019
申请日：1998-05-04
Applicant: 한국전자통신연구원
IPC: H04W74/08 , H04B1/7097 , H04B1/7073
Abstract: PURPOSE: A random connection device for a reverse common channel in a CDMA(Code Division Multiple Access) scheme and a method therefor are provided to enhance data transmission efficiency and reduce time required for transmitting one data by stably performing code synchronization and tracking and reliably transmitting data. CONSTITUTION: A code synchronization acquisition information broadcasting device, composed in a base station(210), performs the code synchronization of a preamble transmitted from a plurality of terminals(110,120) through a reverse common channel. If the code synchronization of certain data is acquired, the code synchronization acquisition information broadcasting device broadcasts state information of a channel card in real time so that it is possible for all terminals, which attempt data transmission through a corresponding reverse channel, to recognize the code synchronization acquisition fact. A data transmission deciding device composed in the terminals(110,120) receives state information of the channel card, and controls terminals. Only the terminals, which attempt data transmission in a time slot same to data in which code synchronization is acquired, continuously transmit data. The other terminals stop the data transmission.
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Patent Agency Ranking
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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77.发明授权
公开(公告)号：KR100366288B1
公开(公告)日：2002-12-31
申请号：KR1020000083255
申请日：2000-12-27
Applicant: 한국전자통신연구원
Abstract: 본 발명은 파일럿심벌 영역과 컨트롤심벌 영역이 시분할로 구성되어 직접시퀀스 대역확산된 신호를 이용하여 신호를 탐색하거나 SIR을 측정할 때 수신기의 성능을 최대로 하기 위한 파일럿심벌과 컨트롤심벌이 시분할로 구성되어있는 DS-CDMA신호의 최적 탐색 방법 및 그에 따른 장치에 관한 것이며, 더욱이 수신기가 상기에서 언급한 신호를 탐색할 때 기본적으로 파일럿심벌과 컨트롤심벌의 에너지를 모두 이용하되 두 영역에 대한 코히런트 적분 길이를 달리하고 또한 코히런트 상관값을 최종적으로 논코히런트하게 더할 때 두 부분에 가중치를 달리 줌으로써 탐색기의 성능을 최대로 하는 방법을 제안하며 각 탐색 경로에 대한 효과적인 SNR 추정 방법에 관한 것이다.
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公开(公告)号：KR1020020060390A
公开(公告)日：2002-07-18
申请号：KR1020010001434
申请日：2001-01-10
Applicant: 한국전자통신연구원
IPC: H04B7/26
Abstract: PURPOSE: A hand-over method using a compressed mode and common frequency between neighbor base transceiver stations is provided to enable hand-over without dropping signals up and down, thereby realizing an efficient and safe wireless communication system. CONSTITUTION: A mobile station performs communication with a home base transceiver station by using frequency(310). The mobile station measures signal strength of a target base transceiver station through common frequency by using a compressed mode of a down link and reports the measured signal strength to a base station controller(320). The base station controller performs hard hand-over between the currently set frequency and the common frequency within the home base transceiver station if the signal strength satisfies hand-over condition(330). The base station controller performs soft hand-over between the home base transceiver station and the target base transceiver station by using the hard hand-over common frequency(340).
Abstract translation: 目的：提供使用相邻基站收发台之间的压缩模式和公共频率的切换方法，以便在不丢弃信号的情况下进行切换，从而实现高效安全的无线通信系统。 构成：移动台通过使用频率（310）来执行与归属基站的通信。 移动站通过使用下行链路的压缩模式通过公共频率来测量目标基站收发信机的信号强度，并向基站控制器（320）报告所测量的信号强度。 如果信号强度满足切换条件（330），则基站控制器在本地收发信台之间的当前设定频率和公共频率之间执行硬切换。 基站控制器通过使用硬切换公共频率（340）来执行家庭基站收发器和目标基站收发器之间的软切换。
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公开(公告)号：KR1020020022409A
公开(公告)日：2002-03-27
申请号：KR1020000055185
申请日：2000-09-20
Applicant: 한국전자통신연구원
IPC: H04B7/26
CPC classification number: H04W36/18 , H04W36/0061 , H04W40/12 , H04W40/36
Abstract: PURPOSE: An apparatus and method for searching an adjacent BTS(Base Transceiver Station) of an MS(Mobile Station) is provided to search the adjacent BTS for a soft handover in the MS. CONSTITUTION: A channel estimator(32) estimates a channel from a random slot of a random path of a multi-path signal received from a home BTS, outputs the estimated channel, and outputs multi-path signal arrival signal information. A controller(33) stores a part of time index having a relatively high auto-correlation function value among sampling values of an auto-correlation function of a primary synchronous channel code signal received from the home BTS and a weight value according to the time index, receives multi-path signal arrival time information, and outputs a timing signal. A multiplier(31) multiplies a channel estimating value to a corresponding path, a weight value according to the time index inputted from the controller(33), a transmission diversity indication bit to a common control physical channel, and a primary synchronous channel power to a common pilot channel power ratio under the control of the timing signal of the controller(33). Subtracters(34,35) subtract an output signal of the multiplier(31) from an output signal of a primary synchronous channel matching filter(11) according to each channel and provide the subtracted value to a non-coherent combiner(12).
Abstract translation: 目的：提供一种用于搜索MS（移动台）的相邻BTS（基站收发台）的装置和方法，用于在MS中搜索相邻的BTS进行软切换。 构成：信道估计器（32）估计从归属BTS接收的多路径信号的随机路径的随机时隙中的信道，输出估计信道，并输出多径信号到达信号信息。 控制器（33）存储从归属BTS接收到的主同步信道码信号的自相关函数的采样值和根据时间索引的权重值的具有较高自相关函数值的时间索引的一部分 接收多路径信号到达时间信息，并输出定时信号。 乘法器（31）将信道估计值与对应路径相乘，根据从控制器（33）输入的时间索引的权重值，到公共控制物理信道的发送分集指示比特和主同步信道功率 在控制器（33）的定时信号的控制下的公共导频信道功率比。 减法器（34,35）根据每个通道从主同步信道匹配滤波器（11）的输出信号中减去乘法器（31）的输出信号，并将相减值提供给非相干组合器（12）。
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公开(公告)号：KR1020010075830A
公开(公告)日：2001-08-11
申请号：KR1020000002343
申请日：2000-01-19
Applicant: 한국전자통신연구원
IPC: H04B15/00
CPC classification number: H04L27/001 , H03M13/2742
Abstract: PURPOSE: A random interleave apparatus using a chaos signal is provided to improve the reliability of transmitted data by spreading a group error by the movement of a terminal and a fading generated in a wireless channel when transmitting channel-coded data. CONSTITUTION: A chaos signal and chaos pattern generating unit(122A-1) generates a chaos signal and generates a chaos pattern using the chaos signal. An interleaving pattern generating unit(122A-2) receives a channel-coded signal from a channel coding unit(121) and the chaos pattern from the chaos signal and chaos pattern generating unit(122A-1) and interleaves the channel-coded signal.
Abstract translation: 目的：提供一种使用混沌信号的随机交错装置，用于通过在发送信道编码数据时通过终端的移动和无线信道中产生的衰落来扩展组差错来提高发送数据的可靠性。 构成：混沌信号和混沌模式生成单元（122A-1）产生混沌信号，并使用混沌信号产生混沌模式。 交织图案生成单元（122A-2）从信道编码单元（121）接收信道编码信号和来自混沌信号和混沌模式生成单元（122A-1）的混沌模式，并对信道编码信号进行交织。
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