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公开(公告)号：KR1020080039788A
公开(公告)日：2008-05-07
申请号：KR1020070101624
申请日：2007-10-09
CPC classification number: H04B7/2637 , H04B7/12 , H04L5/0007
Abstract: A method and an apparatus for transmitting and receiving downlink control and packet data are provided to reduce the number of control channels to be detected and efficiently use transmission resources by using a control indication channel to indicate whether to transmit a control channel. A downlink control and packet data transmitter comprises a transmission control part(270), a control channel creation part(220), a control indication channel creation part(230), a data channel creation part(240), a multiplexing part(250), and a channel transmission part(260). The transmission control part receives an input signal(210) from the external and controls packet data transmission using internal control signals. The control channel creation part creates a control channel to transmit control information for packet data according to the control of the transmission control part. Under the control of the transmission control part, the control indication channel creation part creates a control indication channel to indicate whether to transmit the control channel. The data channel creation part creates a data channel under the control of the transmission control part. The multiplexing part receives the control channel, the control indication channel, the data channel, and other channel signals to be transmitted and effectively executes multiplexing for them. The transmission part outputs the multiplexed channels through an output signal(280).
Abstract translation: 提供了用于发送和接收下行链路控制和分组数据的方法和装置，以减少要检测的控制信道的数量，并通过使用控制指示信道来有效地使用传输资源来指示是否发送控制信道。 下行链路控制和分组数据发射机包括传输控制部分（270），控制信道创建部分（220），控制指示信道创建部分（230），数据信道创建部分（240），复用部分（250） ，以及通道发送部（260）。 传输控制部分从外部接收输入信号（210）并使用内部控制信号控制分组数据传输。 控制信道生成部根据发送控制部的控制，生成用于发送分组数据的控制信息的控制信道。 在传输控制部分的控制下，控制指示信道创建部分创建指示是否发送控制信道的控制指示信道。 数据信道创建部分在传输控制部分的控制下创建数据信道。 复用部分接收要发送的控制信道，控制指示信道，数据信道和其他信道信号，并且有效地执行它们的复用。 发送部分通过输出信号（280）输出多路复用的信道。
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公开(公告)号：KR1020080039787A
公开(公告)日：2008-05-07
申请号：KR1020070101623
申请日：2007-10-09
CPC classification number: H04L5/0048 , H04L5/0007 , H04W72/1278
Abstract: A method for transmitting and receiving L1/L2 control information in an OFDMA(Orthogonal Frequency Division Multiple Access) system is provided to configure and transmit downlink scheduling information and uplink grant control information efficiently in case a base station transmits data to mobile terminals through a downlink. A base station divides downlink control information into a common control block and an individual control block(S210). The common control block contains the number of used control channels and location information(S220), and the individual control block contains downlink schedule information and uplink grant control information for each mobile terminal(S230). The downlink schedule information includes each mobile terminal's ID, downlink resource allocation information, additional control information, and CRC(Cyclic Redundancy Code) bits. The uplink grant control information includes each mobile terminal's ID, uplink resource allocation information, additional control information, and CRC bits. Using predefined transport resources and a predefined transport format, the base station transmits the common control block every TTI(Transmit Time Interval)(S240). The base station transmits the individual control block through a distributed or localized control channel(S250).
Abstract translation: 提供了一种用于在OFDMA（正交频分多址）系统中发送和接收L1 / L2控制信息的方法，用于在基站通过下行链路向移动终端发送数据时有效地配置和发送下行链路调度信息和上行准许控制信息 。 基站将下行链路控制信息划分为公共控制块和单独的控制块（S210）。 公共控制块包含所使用的控制信道的数量和位置信息（S220），并且各个控制块包含用于每个移动终端的下行链路调度信息和上行链路许可控制信息（S230）。 下行链路调度信息包括每个移动终端的ID，下行链路资源分配信息，附加控制信息和CRC（循环冗余码）比特。 上行链路许可控制信息包括每个移动终端的ID，上行链路资源分配信息，附加控制信息和CRC比特。 使用预定义的传输资源和预定义的传输格式，基站每TTI（发送时间间隔）发送公共控制块（S240）。 基站通过分布式或本地化的控制信道发送单独的控制块（S250）。
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公开(公告)号：KR100821275B1
公开(公告)日：2008-04-11
申请号：KR1020060136322
申请日：2006-12-28
Applicant: 한국전자통신연구원
CPC classification number: H04J11/0079 , H04L27/261 , H04L27/2613 , H04L27/2656 , H04L27/2685
Abstract: 하향링크 신호 생성 장치와 셀 탐색 장치가 개시된다.
하향링크 신호 생성 장치는 하나의 셀 고유 인식 코드 그룹과 복수의 프레임 동기 식별 시퀀스로 하향링크 신호를 생성하기도 하고, 복수의 셀 고유 인식 코드 그룹과 복수의 프레임 동기 식별 시퀀스로 하향링크 신호를 생성하기도 하며, 복수의 셀 고유 인식 코드 그룹과 하나의 프레임 동기 식별 시퀀스로 하향링크 신호를 생성하기도 한다.
셀 탐색 장치는 프레임 동기 식별 시퀀스와 셀 고유 인식 코드 그룹을 통해 프레임 동기를 획득하고, 셀을 식별한다.
프레임, 동기, 셀 탐색, 하향링크 신호-
134.发明公开
公开(公告)号：KR1020080031658A
公开(公告)日：2008-04-10
申请号：KR1020070100033
申请日：2007-10-04
Applicant: 한국전자통신연구원
CPC classification number: H04J11/0069 , H04B7/2615 , H04L27/2613 , H04L27/2655
Abstract: A cell search method for an OFDM(Orthogonal Frequency Division Multiplexing) based FDD(Frequency Division Duplex) and TDD(Time Division Duplex) dual mode mobile station and base station transmission scheme is provided to realize a cell searcher for simply operating both an FDD mode and a TDD mode. A method for transmitting a forward synchronization signal includes the steps of: generating a frame including a plurality of sync blocks; and transmitting the frame through a forward link, wherein the frame includes a first SCH(Synchronization Channel) sequence and a plurality of second SCH sequence and specifies a cell identifier by the first SCH sequence and the plurality of second SCH sequence. The first SCH sequence supplies sync block timing information and the plurality of second SCH sequences supply frame timing information. Both the first SCH sequence and the second SCH sequences are used in TDD and FDD systems.
Abstract translation: 提供了一种用于基于OFDM（正交频分复用）的FDD（频分双工）和TDD（时分双工）双模移动台和基站传输方案的小区搜索方法，以实现一个小区搜索器，简单地操作FDD模式 和TDD模式。 用于发送正向同步信号的方法包括以下步骤：产生包括多个同步块的帧; 并且通过前向链路发送所述帧，其中，所述帧包括第一SCH（同步信道）序列和多个第二SCH序列，并且通过所述第一SCH序列和所述多个第二SCH序列指定小区标识符。 第一SCH序列提供同步块定时信息，并且多个第二SCH序列提供帧定时信息。 在TDD和FDD系统中都使用第一SCH序列和第二SCH序列。
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公开(公告)号：KR1020080030923A
公开(公告)日：2008-04-07
申请号：KR1020070093234
申请日：2007-09-13
CPC classification number: H04W72/042 , H04L5/0007 , H04W72/0446 , H04W72/1273
Abstract: Downlink resource allocation for an OFDMA system is provided to transmit allocation information about resources to be used in an MS(Mobile Station) when a BS(Base Station) transmits downlink scheduling information to the MS, thereby maximizing the amount of resources used in data transmission and increasing a data transmission rate. A method for transmitting resource allocation information comprises the following steps of: constructing continuous physical resources as a sub band; constructing the sub band allocation information as a binary bitmap to transmit the constructed binary bitmap to a first control channel; and constructing allocation information within the sub band regarding the sub band as a binary bitmap to transmit the constructed binary bitmap to a second control channel.
Abstract translation: 当BS（基站）向MS发送下行链路调度信息时，提供用于OFDMA系统的下行链路资源分配以发送关于要在MS（移动台）中使用的资源的分配信息，从而最大化数据传输中使用的资源量 并提高数据传输速率。 一种用于发送资源分配信息的方法包括以下步骤：构建连续的物理资源作为子带; 将子带分配信息构造为二进制位图，以将构造的二进制位图传送到第一控制信道; 以及将关于子带的子带内的分配信息构建为二进制位图，以将构造的二进制位图发送到第二控制信道。
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Patent Agency Ranking
公开(公告)号：KR1020080030329A
公开(公告)日：2008-04-04
申请号：KR1020060096274
申请日：2006-09-29
Applicant: 한국전자통신연구원
IPC: H03M13/11
CPC classification number: H03M13/116 , H03M13/1185 , H03M13/1188
Abstract: A method for encoding an LDPC(Low Density Parity Check) code by using a result of checking a predetermined parity is provided to effectively encode the LDPC code by slightly changing only a structure of an H matrix. A method for encoding an LDPC code by using a result of checking a predetermined parity includes the steps of: forming a parity bit check matrix with a dual diagonal structure based on an H matrix(901); calculating all parity bit by inserting an arbitrary binary number into a sub block unit(902); checking a parity bit corresponding to the sub block unit on the last position of the H matrix when the calculated parity bit is not right(903,904); searching a parity bit part where a result of checking the parity bit is represented as 1(905); performing an XOR operation of the parity bit part into which the arbitrary binary number is inserted and the parity bit part obtained through a simultaneous equation between the parity bits per the sub block unit(906); and determining, the parity bit satisfying a condition that a result of multiplying the H matrix by a code word vector encoded by the H matrix corresponds to 0, as the parity bit of the H matrix(907).
Abstract translation: 提供了通过使用检查预定奇偶校验的结果对LDPC（低密度奇偶校验）码进行编码的方法，以通过稍微改变H矩阵的结构来有效地对LDPC码进行编码。 通过使用检查预定奇偶校验的结果对LDPC码进行编码的方法包括以下步骤：基于H矩阵形成具有双对角线结构的奇偶校验位校验矩阵（901）; 通过将任意二进制数插入子块单元（902）来计算所有奇偶校验位; 当所计算的奇偶校验位不正确时，检查与H矩阵的最后位置相对应的子块单元的奇偶校验位（903,904）; 搜索奇偶校验位部分，其中检查奇偶校验位的结果被表示为1（905）; 执行插入任意二进制数的奇偶校验位部分的异或运算和通过每个子块单元（906）的奇偶校验位之间的联立方程获得的奇偶校验位部分; 并且确定满足由H矩阵编码的码字向量将H矩阵乘以H的矩阵对应于0的条件的奇偶校验位作为H矩阵的奇偶校验位（907）。
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公开(公告)号：KR1020080020934A
公开(公告)日：2008-03-06
申请号：KR1020070052549
申请日：2007-05-30
Applicant: 한국전자통신연구원
IPC: H04B7/26
CPC classification number: H04W72/04 , H04J11/00 , H04J13/0074 , H04L1/1692 , H04L1/1861 , H04L1/1887 , H04L5/0021 , H04L5/0048 , H04L5/0053 , H04L25/03866 , H04L27/2602 , H04J11/0026
Abstract: An uplink signal transmission method of a communication system, a transmission device, a generation method, and a generation device are provided to randomize interference between users and cells when a frequency domain CDM(Code Division Multiplexing) method is used, thereby reducing the interference between users. At the first transmission time, the first sequence for distinguishing a terminal from another terminal is multiplied by the first transmission symbol to transmit the multiplied sequence. At the second transmission time different from the first transmission time, the second sequence for distinguishing the terminal from another terminal is multiplied by the second transmission symbol to transmit the multiplied sequence. The second sequence is different from the first sequence.
Abstract translation: 提供通信系统，发送装置，生成方法和生成装置的上行链路信号发送方法，以便在使用频域CDM（码分多址）方法的情况下使用户和小区之间的干扰随机化，从而减少 用户。 在第一传输时间，将终端与另一终端进行区分的第一序列乘以第一传输符号以发送乘法序列。 在与第一传输时间不同的第二传输时间，用于区分终端与另一终端的第二序列被第二传输符号相乘以发送乘法序列。 第二个序列与第一个序列不同。
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公开(公告)号：KR1020080012150A
公开(公告)日：2008-02-11
申请号：KR1020070072449
申请日：2007-07-19
CPC classification number: H04J11/0093 , H04W48/16 , H04W56/0055 , H04W64/00
Abstract: A data transmission method of an MS(Mobile Station) using a cell search signal and a device thereof are provided to enable the MS to determine a location by itself by using cell search signals received from base stations within a home cell and neighboring cells, and to estimate uplink delay time information, thereby omitting RACH(Random Access Channel) burst transmission. An MS receives cell search signals from base stations within a synchronized home cell and base stations within at least more than neighboring cell(S710). The MS calculates receiving time differences between the cell search signals received from the base stations within the home cell and the neighboring cells(S720). The MS calculates uplink delay time of the neighboring cells based on the receiving time differences(S730).
Abstract translation: 提供使用小区搜索信号的MS（移动站）的数据传输方法及其装置，以使得MS能够通过使用从家庭小区和邻近小区内的基站接收的小区搜索信号来自己确定位置，以及 以估计上行链路延迟时间信息，从而省略RACH（随机接入信道）突发传输。 MS在至少相邻小区内的同步家庭小区和基站内的基站接收小区搜索信号（S710）。 MS计算从家庭小区内的基站和相邻小区接收的小区搜索信号之间的接收时间差（S720）。 MS根据接收时间差计算相邻小区的上行延迟时间（S730）。
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公开(公告)号：KR1020080010254A
公开(公告)日：2008-01-30
申请号：KR1020060107489
申请日：2006-11-01
CPC classification number: H04B1/7083 , H04B7/2621 , H04W84/02
Abstract: A cell search method in an OFDM(Orthogonal Frequency Division Multiplexing) cellular system, a frame transmission method therefor, and a forward link frame structure are provided to smoothly perform handover by effectively searching an adjacent cell, and reduce the amount of battery consumption of a mobile station. The first detecting unit obtains symbol synchronization by applying a matching filter to a reception signal(S800). A hop pattern correlation values are calculated by using reception synchronous channel symbols extracted from the reception signal based on the obtained symbol synchronization information, and a hop pattern of a target cell is detected based on the calculated hop pattern correlation values(S820). A code group and a frame boundary of the target cell are detected based on the detected hop pattern(S840). Pilot correlation values of common pilot channel symbols and scrambling codes belonging to the detected code group are calculated, and the scrambling codes of the target cell are detected based on the calculated pilot correlation value(S860). It is checked whether the detection results are reliable(S880).
Abstract translation: 提供了OFDM（正交频分复用）蜂窝系统中的小区搜索方法，其帧传输方法和前向链路帧结构，以通过有效地搜索相邻小区来平滑地执行切换，并且减少电池消耗量 移动台。 第一检测单元通过对接收信号应用匹配滤波器来获得符号同步（S800）。 通过使用基于获得的符号同步信息从接收信号提取的接收同步信道符号来计算跳模式相关值，并且基于所计算的跳频模式相关值来检测目标小区的跳频模式（S820）。 基于检测到的跳跃模式来检测目标小区的码组和帧边界（S840）。 计算属于所检测的代码组的公共导频信道符号和扰码的导频相关值，并且基于所计算的导频相关值来检测目标小区的扰码（S860）。 检查检测结果是否可靠（S880）。
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公开(公告)号：KR1020070117449A
公开(公告)日：2007-12-12
申请号：KR1020070042509
申请日：2007-05-02
Applicant: 한국전자통신연구원
IPC: H04J11/00
CPC classification number: H04L27/2657 , H04L5/0044 , H04L27/2628 , H04W72/0453
Abstract: An apparatus and a method for creating an orthogonal frequency division multiplexing(OFDM) signal are provided to decrease PAPR(Peak-to-Average Power Ratio) without attenuating bandwidth efficiency according to the transmission of additional information in an OFDM communication system. A symbol padding part(305) outputs an extended symbol stream by adding a part of a plurality of digital modulation symbols to the plurality of digital modulation symbols. A symbol search part(307) outputs plural weights corresponding to each of the plurality of digital modulation symbols by using FFT(Fast Fourier Transform) and IFFT(Inverse Fast Fourier Transform) by receiving the extended symbol stream. A symbol weight part(309) outputs a plurality of weight symbols by applying plural weights searched by the symbol search part to the plurality of digital modulation symbols by receiving the plurality of digital modulation symbols. A power compensation part(311) outputs a power compensation signal by compensating the variation of power according to the plural weights by receiving the plurality of weight symbols.
Abstract translation: 提供了一种用于创建正交频分复用（OFDM）信号的装置和方法，以便在OFDM通信系统中根据附加信息的传输而不衰减带宽效率来降低PAPR（Peak-to-Average Power Ratio）。 符号填充部分（305）通过将多个数字调制符号的一部分添加到多个数字调制符号来输出扩展符号流。 符号搜索部分（307）通过使用FFT（快速傅立叶变换）和IFFT（快速傅里叶逆变换）来输出与多个数字调制符号中的每一个对应的多个权重。 符号权重部分（309）通过接收多个数字调制符号，通过将由符号搜索部分搜索的多个权重应用于多个数字调制符号来输出多个权重符号。 功率补偿部（311）通过接收多个权重符号，通过根据多个权重来补偿功率的变化来输出功率补偿信号。
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