公开(公告)号：KR1020050057927A

公开(公告)日：2005-06-16

申请号：KR1020030090150

申请日：2003-12-11

Applicant: 한국전자통신연구원

Inventor： 김준형 ,  이광천 ,  정재호 ,  김성민 ,  정현규 ,  김영일

IPC: H03F3/20

Abstract: 본 발명은 직교주파수 분할 다중화 시스템(OFDM)을 이용하는 단말기용 전력증폭기 및 그에 대한 바이어싱 방법에 관한 것으로, 특히 단말기용 전력 증폭기는 제1 및 제2 구동단, 전력단과 바이어스 회로를 포함한다. 제1 구동단은 전력단에 구동 전력을 공급하고, 전력단은 제1 구동단에서 공급되는 전력을 증폭하여 출력한다. 제2 구동단은 제1 구동단과 전력단 사이에 삽입되어 전력단의 바이어스 전류를 급격히 감소시킨다. 바이어스 회로는 제1 및 제2 구동단과 전력단에 바이어스를 인가한다. 본 발명에 따르면, OFDM 시스템의 단말기용 전력증폭기 전력단의 동작 전류를 줄임으로써 전력증폭기의 전력 이득 확장 특성을 이용하여 OFDM 시스템의 높은 PAPR를 만족시키면서 OFDM 단말기의 불필요한 동작 전류를 감소시킬 수 있다.

公开(公告)号：KR1020050047762A

公开(公告)日：2005-05-23

申请号：KR1020030081548

申请日：2003-11-18

Applicant: 한국전자통신연구원 ,  삼성전자주식회사 ,  주식회사 케이티 ,  에스케이브로드밴드주식회사 ,  주식회사 케이티프리텔 ,  에스케이텔레콤 주식회사

Inventor： 김성민 ,  이광천 ,  정재호 ,  김준형 ,  정현규 ,  김영일

IPC: H04B1/10

Abstract: 본 발명은 신호 차단 장치 및 이를 이용한 TDD(time division duplex) 통신 시스템에 관한 것이다.
본 발명에서는 안테나, 송신 장치와 수신 장치 그리고, 송수신 신호 생성을 위한 국부 발진 신호를 생성하는 발진기를 포함하는 TDD 통신 시스템에서, 상기 국부 발진 신호가 상기 송신 장치로 입력되는 경로 상에 제1 스위치가 형성되고, 상기 국부 발진 신호가 상기 수신 장치로 입력되는 경로 상에 제2 스위치가 형성된다. 그리고, 제어부의 제어에 따라 상기 제1 및 제2 스위치가 선택적으로 동작하여 상기 국부 발진 신호가 송신 장치 또는 수신 장치로 입력된다. 특히, 상기 제1 스위치는 송신 구간 동안 온 되고, 상기 제2 스위치는 수신 구간 동안 온 된다. 그 결과, 수신 구간 동안에는 송신 신호가 수신 장치로 유입되는 것이 최대한 차단됨으로써, 수신 신호의 왜곡 등이 방지되어 수신 감도가 향상된다.

公开(公告)号：KR100462323B1

公开(公告)日：2004-12-17

申请号：KR1020020080303

申请日：2002-12-16

Applicant: 한국전자통신연구원

Inventor： 이경석 ,  김영일

IPC: H04W28/06 ,  H04L12/741

Abstract: PURPOSE: A method for transceiving packet data in an OFDM(Orthogonal Frequency Division Multiplexing)/FDMA(Frequency Division Multiple Access) mobile communication system is provided to map address information of a packet header to a terminal, and to transmit packet data only by omitting the packet header, thereby minimizing a wireless transmission of packet traffic. CONSTITUTION: A destination address(511) is connected to a terminal ID(421). A packet ID(512) is connected to a packet sequence number(422). A packet length(513) and a packet protocol(514) are connected to a data size(423) and a transmission system(424), respectively. When packet data is inputted, a base station maps packet header information to terminals by using a packet header information conversion table, and transmits the packet data. The terminals firstly receive a control channel to receive a data channel only by using information on the terminal ID(421), and demodulate the data channel by using information on the packet sequence number(422), the data size(423), and the transmission system(424).

Abstract translation: 目的：提供一种在OFDM（正交频分复用）/ FDMA（频分多址）移动通信系统中收发分组数据的方法，以将分组首标的地址信息映射到终端，并仅通过省略 包头，从而使包流量的无线传输最小化。 构成：目的地址（511）连接到终端ID（421）。 分组ID（512）连接到分组序号（422）。 分组长度（513）和分组协议（514）分别连接到数据大小（423）和传输系统（424）。 当输入分组数据时，基站通过使用分组报头信息转换表将分组报头信息映射到终端，并发送分组数据。 终端首先通过使用关于终端ID的信息（421）接收控制信道以接收数据信道，并且通过使用关于分组序列号（422），数据大小（423）和 传输系统（424）。

公开(公告)号：KR100448218B1

公开(公告)日：2004-09-10

申请号：KR1020010086266

申请日：2001-12-27

Applicant: 한국전자통신연구원

Inventor： 문영진 ,  박남진 ,  박지수 ,  김현재 ,  류득수 ,  김영일

IPC: H04W28/04 ,  H04W88/08

Abstract: PURPOSE: A duplex board system and a method for switching duplex boards thereof are provided to instantly switch an active state board to a standby state board when abnormality is generated in the active state board in hardware, and switch the active state board and the standby state board in software. CONSTITUTION: The second duplex board(20) connects with the first duplex board(10) through communication channels(42,43). A cell bus(30) having a multicasting function is a communication bus between the first or second duplex board(10,20) and another board. The first and second duplex boards(10,20) generate signals for switching active and standby states by a state value decided by their hardware abnormal state and state control signals capable of being controlled in software, and a state value of an object board.

Abstract translation: 目的：提供一种双面板系统及其双面板切换方法，用于当活动状态板在硬件中产生异常时立即将活动状态板切换到备用状态板，并且切换活动状态板和备用状态 软件板。 构成：第二双面板（20）通过通信通道（42,43）与第一双面板（10）连接。 具有多播功能的信元总线（30）是第一或第二双工电路板（10,20）与另一电路板之间的通信总线。 第一和第二双面板（10,20）通过由它们的硬件异常状态决定的状态值和能够用软件控制的状态控制信号以及目标板的状态值产生用于切换活动和待机状态的信号。

公开(公告)号：KR1020040056987A

公开(公告)日：2004-07-01

申请号：KR1020020083738

申请日：2002-12-24

Applicant: 한국전자통신연구원

Inventor： 강홍구 ,  김현재 ,  장일순 ,  김영일 ,  김기선

IPC: H04L27/26

Abstract: PURPOSE: A method for allocating sub-channels in OFDM communication and a recoding medium for storing an allocation program are provided to form a simple bit-loading algorithm by using a modulation/demodulation level as feedback information. CONSTITUTION: A base station receives modulation/demodulation levels and average receiving S/N ratios from each terminal(S1). Users are sorted according to the average receiving S/N ratios(S2). Sub-channels are selected by using the maximum modulation/demodulation level and the maximum average receiving S/N ratio after the users are sorted according to the average receiving S/N ratio(S3). The selected sub-channels are assigned to the users(S4-S7).

Abstract translation: 目的：提供一种在OFDM通信中分配子信道的方法和用于存储分配程序的记录介质，以通过使用调制/解调级别作为反馈信息形成简单的比特加载算法。 构成：基站从每个终端接收调制/解调电平和平均接收信噪比（S1）。 用户根据平均接收信噪比（S2）进行排序。 通过使用最大调制/解调级别和根据平均接收S / N比对用户进行排序后的最大平均接收S / N比来选择子信道（S3）。 所选择的子信道被分配给用户（S4-S7）。

公开(公告)号：KR1020040053852A

公开(公告)日：2004-06-25

申请号：KR1020020080306

申请日：2002-12-16

Applicant: 한국전자통신연구원

Inventor： 박남진 ,  김기석 ,  강창순 ,  김영일 ,  배달진

IPC: H04B7/155

CPC classification number: H04W24/04 ,  H04B7/15507 ,  H04W16/08 ,  H04W88/10

Abstract: PURPOSE: A multiple operation mode device of an advanced mobile communication base station system and a configuring method thereof are provided to operate channel devices and channel control devices of a base station in single operation mode and multiple operation modes, thereby preventing a call disconnection and an entire base station failure. CONSTITUTION: Plural channel devices(1A,1B,,nA,nB)(600.1A,600.1B,,600.nA,600.nB) consist of network processor devices and wireless access portions(500.1A,500.1B,,500.nA,500.nB). The first channel control devices(A,B)(600.A,600.B) consist of network processor devices and access controllers(500.A,500.B). The access controllers(500.A,500.B) include status registers, control registers, interrupt registers, and memories for storing inter-processor messages. The state registers perceive statuses of the channel devices(1A,1B,,nA,nB)(600.1A,600.1B,,600.nA,600.nB) and the first/second channel control devices(A,B)(600.A,600.B).

Abstract translation: 目的：提供先进的移动通信基站系统的多操作模式设备及其配置方法，以单一操作模式和多种操作模式操作基站的信道设备和信道控制设备，从而防止呼叫断开和 整个基站故障。 构成：多个通道设备（1A，1B ,, nA，nB）（600.1A，600.1B ,, 600.nA，600.nB）由网络处理器设备和无线接入部分（500.1A，500.1B ,, 500）组成。 NA，500.nB）。 第一信道控制设备（A，B）（600.A，600.B）由网络处理器设备和接入控制器（500A，500B）组成。 访问控制器（500.A，500.B）包括状态寄存器，控制寄存器，中断寄存器和用于存储处理器间消息的存储器。 状态寄存器感知信道设备（1A，1B ,, nA，nB）（600.1A，600.1B ,, 600.nA，600.nB）和第一/第二信道控制设备（A，B）（600）的状态 .A，600.B）。

公开(公告)号：KR1020040018642A

公开(公告)日：2004-03-04

申请号：KR1020020050545

申请日：2002-08-26

Applicant: 한국전자통신연구원

Inventor： 김재흥 ,  김영일

IPC: H04B7/26

CPC classification number: H04W36/04 ,  H04W16/32 ,  H04W36/0055 ,  H04W36/14

Abstract: PURPOSE: A vertical cell conversion apparatus in a cellular system having a hierarchical cell structure and a method therefor are provided so that each base station classifies and arranges busy mobile terminals according to channel situation such as a transmission data quantity, a retransmission rate and a channel quantity in hierarchical cell environment and performs vertical cell conversion under the control of a hand-over central control device. CONSTITUTION: A wide area cell base station(2) provides a packet service to a terminal moved in a high speed by the first frequency in the first speed. The wide area cell base station(2) sets the priority of a plurality of terminals by a parameter indicating transmission information of the terminals in a wide area, arranges the terminals, and transmits arrangement information about the arranged terminals. A narrow area cell base station(3) provides the packet service to a terminal moved in a low speed by the second frequency in the second speed. The narrow area cell base station(3) sets the priority of a plurality of terminals by a parameter indicating transmission information of the terminals in a narrow area cell, arranges the terminals, and transmits arrangement information about the arranged terminals. A BSC(Base Station Controller)(4) performs vertical cell conversion according to terminal arrangement information received from the narrow area cell base station(3) and the wide area cell base station(2).

Abstract translation: 目的：提供一种具有分层小区结构及其方法的蜂窝系统中的垂直小区转换装置，使得每个基站根据诸如传输数据量，重发率和信道之类的信道状况对繁忙的移动终端进行分类和布置 在分层小区环境中的数量，并在转交中央控制设备的控制下执行垂直小区转换。 构成：广域小区基站（2）向以第一速度的第一频率高速移动的终端提供分组业务。 广域小区基站（2）通过指示广域终端的发送信息的参数来设定多个终端的优先级，配置终端，并发送关于所配置的终端的配置信息。 窄区域小区基站（3）向以第二速度以第二频率低速移动的终端提供分组业务。 窄区域小区基站（3）通过表示窄区域小区中的终端的发送信息的参数来设定多个终端的优先级，配置终端，并发送关于所配置的终端的配置信息。 BSC（基站控制器）（4）根据从窄区域小区基站（3）和广域小区基站（2）接收的终端配置信息进行垂直小区转换。

公开(公告)号：KR100413221B1

公开(公告)日：2004-01-03

申请号：KR1020010086506

申请日：2001-12-28

Applicant: 한국전자통신연구원

Inventor： 류득수 ,  김광순 ,  이상현 ,  방승찬 ,  김영일

IPC: H04B7/155

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，以便提高基站的效率。 因为对于IF（中频）转换的模块是不必要的，所以可以简单且有效地组成。 构成：BSC（基站控制器）接口单元（110）通过有线与BSC（30）进行接口，并将基站的内部数据转换成适合于BSC（30）的数据。 基带调制和解调单元（120）调制和解调基带信号，并编码或解码信道。 合并和基带信号转换单元（130）将多信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为基带数字信号。 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，并对混合信号进行调制。 基站控制单元（150）初始化基站，管理基站的资源，并且控制呼叫处理。 时钟产生和分配单元（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），基带调制解调单元（120）和基站控制单元（150）之间中继高速分组消息通信。

公开(公告)号：KR1020030054801A

公开(公告)日：2003-07-02

申请号：KR1020010085213

申请日：2001-12-26

Applicant: 한국전자통신연구원 ,  주식회사 현대시스콤

Inventor： 박남진 ,  박지수 ,  김기석 ,  최성구 ,  김영일

IPC: H04L12/28

Abstract: PURPOSE: A device for converting cells in a wireless communication system is provided to convert AAL2-type cells into AAL5-type cells, and to convert the AAL5-type cells into the AAL2-type cells, thereby increasing bandwidth and trunk efficiency when communicating packets with ATM cells. CONSTITUTION: A UTOPIA input interface(11) receives ATM cells. An input FIFO(12) stores at least one of the ATM cells. A multiplexer(13) selectively outputs one of data outputted from the input FIFO(12) or data outputted from a feedback output buffer(29). A CAM(Content Addressable Memory)(19) stores address conversion control information. An AAL5,2 converter(14) converts AAL5-type traffic ATM cells into AAL2-type ATM cells, and bypasses control ATM cells. A DPRAM(20) stores the AAL2-type ATM cells. A demultiplexer(15) outputs at least one of the AAL2-type ATM cells.

Abstract translation: 目的：提供一种用于在无线通信系统中转换小区的设备，用于将AAL2型小区转换成AAL5型小区，并将AAL5型小区转换为AAL2型小区，从而在传送分组时增加带宽和中继效率 与ATM信元。 构成：UTOPIA输入接口（11）接收ATM信元。 输入FIFO（12）存储至少一个ATM信元。 复用器（13）有选择地输出从输入FIFO（12）输出的数据之一或从反馈输出缓冲器（29）输出的数据。 CAM（内容可寻址存储器）（19）存储地址转换控制信息。 AAL5,2转换器（14）将AAL5型业务ATM信元转换为AAL2型ATM信元，并绕过控制ATM信元。 DPRAM（20）存储AAL2型ATM信元。 解复用器（15）输出至少一个AAL2型ATM信元。

公开(公告)号：KR1020030054305A

公开(公告)日：2003-07-02

申请号：KR1020010084446

申请日：2001-12-24

Applicant: 한국전자통신연구원 ,  삼성전자주식회사

Inventor： 박남진 ,  박지수 ,  김기석 ,  최성구 ,  김영일

IPC: H04L12/28

CPC classification number: H04L12/5601 ,  H04L2012/5652 ,  H04L2012/5665

Abstract: PURPOSE: A device of transceiving an ATM cell and a method therefor are provided to designate the number of UTOPIA level2 slavers mounted on an ATM network and physical addresses, in order to prevent unnecessary address polling, thereby quickly processing ATM cell transceiving. CONSTITUTION: A header converter(130) converts headers of ATM cells received from the first UTOPIA level2 slavers(200). A UTOPIA level2 master output interface(150) generates physical addresses from VPIs/VICs of the converted headers, and outputs the header-converted ATM cells to the second UTOPIA level2 slavers(300). A UTOPIA master input interface(110) receives the ATM cells from the first UTOPIA level2 slavers(200). An input buffer(120) stores the received ATM cells, and transmits the ATM cells to the header converter(130) when necessary. An output buffer(140) stores the converted headers and payload of the ATM cells, and transmits the ATM cells to the UTOPIA level2 master output interface(150) when necessary.

Abstract translation: 目的：提供收发ATM信元的装置及其方法，以指定安装在ATM网络上的UTOPIA level2 slavers的数量和物理地址，以便防止不必要的地址轮询，从而快速处理ATM信元收发。 构成：报头转换器（130）转换从第一UTOPIA级别2的移动台（200）接收的ATM信元的报头。 UTOPIA level2主输出接口（150）从转换的报头的VPI / VIC产生物理地址，并将报头转换的ATM信元输出到第二UTOPIA级别2的移动台（300）。 UTOPIA主输入接口（110）从第一UTOPIA level2 slavers（200）接收ATM信元。 输入缓冲器（120）存储所接收的ATM信元，并且在必要时将ATM信元发送到报头转换器（130）。 输出缓冲器（140）存储ATM信元的经转换的报头和有效负载，并且在必要时将ATM信元发送到UTOPIA级别2主输出接口（150）。