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公开(公告)号：KR1020080087658A
公开(公告)日：2008-10-01
申请号：KR1020080016820
申请日：2008-02-25
CPC classification number: H04L27/20 , H04L1/1607 , H04L27/227
Abstract: A method for transmitting and receiving bit information is provided to improve the performance of a system by using a binary quadrature phase shift key. A method for transmitting and receiving bit information includes the steps of: generating bit information corresponding to a signal to be transmitted(S11); selecting two time region codes of a plurality of time region codes(S12); generating a complex symbol corresponding to the bit information using two time region codes(S14); and transmitting the bit information using the complex symbol(S20). The complex symbol generation step includes the steps of: generating four time region codes by phase-modulating two time region codes; and generating a complex symbol by selecting one of four time region codes in response to the bit information.
Abstract translation: 提供了一种用于发送和接收比特信息的方法，以通过使用二进制正交相移键提高系统的性能。 一种发送和接收比特信息的方法包括以下步骤：产生与要发送的信号相对应的比特信息（S11）; 选择多个时区代码的两个时区码（S12）; 使用两个时区代码生成与比特信息对应的复数符号（S14）; 以及使用所述复合符号发送所述位信息（S20）。 复合符号生成步骤包括以下步骤：通过对两个时区代码进行相位调制来产生四个时区码; 以及通过响应于位信息选择四个时区代码之一来生成复符号。
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公开(公告)号：KR1020080071065A
公开(公告)日：2008-08-01
申请号：KR1020070132635
申请日：2007-12-17
CPC classification number: H04B1/707 , H04B7/02 , H04L5/0053 , H04L27/2626
Abstract: A transmission diversity method for a forward link channel in a wireless communication system and a signal processing method are provided to improve transmission diversity for an MC-CDMA(Multi-Carrier Code Division Multiple Access) type channel in an OFDM(Orthogonal Frequency Division Multiplexing)-based downlink by being used to ACK/NACK channels. Predetermined different output symbols are generated from plural input symbols at one random modulation symbol interval(S900). Orthogonal codes are generated(S910). The output symbols are spread by using the orthogonal codes. The spread output symbols are crossed together as being combined, and the combined output symbols are outputted to each transmission path.
Abstract translation: 提供了一种用于无线通信系统中的前向链路信道的传输分集方法和信号处理方法，以改善OFDM（正交频分复用）中的MC-CDMA（多载波码分多址）类型信道的传输分集， 的下行链路用于ACK / NACK信道。 以一个随机调制符号间隔从多个输入符号生成预定的不同输出符号（S900）。 生成正交码（S910）。 输出符号通过使用正交码进行扩展。 扩展输出符号被组合在一起，并且组合的输出符号被输出到每个传输路径。
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63.发明公开
公开(公告)号：KR1020080066467A
公开(公告)日：2008-07-16
申请号：KR1020070003952
申请日：2007-01-12
CPC classification number: H04W74/08 , H04L5/0007 , H04L27/26 , H04L27/2672
Abstract: A method for multiplexing a random access preamble for a low speed mobile station and a random access preamble for a high speed mobile station based on a frequency axis is provided to reduce interference between mobile stations by multiplexing a random access band based on a frequency axis in an uplink of a cellular system. A method for multiplexing a random access preamble for a low speed mobile station and a random access preamble for a high speed mobile station based on a frequency axis includes the steps of: multiplexing a random access band using a preamble(100) which is used in a mobile station of a high speed, and a random access band using a preamble(110) which is used in a mobile station of a low speed on a frequency band. All of the mobile station of a high speed and the mobile station of a low speed perform easily a random access by allocating the different number of random access band using the preamble which is used in the mobile station of the high speed and random access band using the preamble which is used in the mobile station of the low speed to the cell based on the characteristics of the cell.
Abstract translation: 提供一种用于基于频率轴多路复用低速移动站的随机接入前同步码和高速移动台的随机接入前导码的方法，以通过基于频率轴的随机接入频带复用随机接入频带来减少移动台之间的干扰 蜂窝系统的上行链路。 一种用于低速移动台的随机接入前导码和基于频率轴的高速移动台的随机接入前同步码的方法包括以下步骤：使用前导码（100）多路复用随机接入频带 高速移动站和使用在频带上的低速移动站中使用的前导码（110）的随机接入频带。 所有高速移动站和低速移动站均通过使用在高速和随机接入频带的移动台中使用的前同步码分配不同数量的随机接入频带来轻松执行随机接入，所述前导码使用 基于小区的特性，在低速小区的移动站中使用的前导码。
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公开(公告)号：KR1020080045601A
公开(公告)日：2008-05-23
申请号：KR1020070072175
申请日：2007-07-19
CPC classification number: H04W74/08 , H04B7/0617 , H04B7/0639 , H04B7/12
Abstract: A random access method and a random access response method are provided to enable a base station to perform beam forming of response data for a random access response message or a first uplink message by using fed-back precoding vector information and transmit the data, thereby improving reliability of a base station response. A random access method comprises the following steps of: transmitting at least one broadcasting signal; receiving an index of a precoding vector, selected based on at least broadcasting signal among plural precoding vectors, from a mobile station(S105); and transmitting a response to random access of the mobile station by using the selected precoding vector(S106).
Abstract translation: 提供了一种随机接入方法和随机接入响应方法，使得基站能够通过使用反馈预编码向量信息并发送数据来对随机接入响应消息或第一上行链路消息执行响应数据的波束形成，由此改善 基站响应的可靠性。 随机接入方法包括以下步骤：发送至少一个广播信号; 从移动台接收至少基于多个预编码矢量中的广播信号选择的预编码矢量的索引（S105）; 以及通过使用所选择的预编码向量来发送对所述移动站的随机接入的响应（S106）。
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公开(公告)号：KR1020080040553A
公开(公告)日：2008-05-08
申请号：KR1020070072149
申请日：2007-07-19
IPC: H04B7/26
CPC classification number: H04W72/0413 , H04W72/0453 , H04W72/085
Abstract: A source allocation requesting method and a resource allocation method are provided to allow a BS(Base Station) to preferentially allocate verified resources to a mobile terminal which is in a bad channel state. An MS(Mobile Station) measures CQI(Channel Quality Information) by using a common pilot signal transmitted from a BS(S101). The measured CQI is included in an RACH(Random Access Channel) preamble and transmitted to the BS(S102). The MS checks whether or not the BS has normally received the RACH preamble(S103). When an RACH response message is received from the BS, the MS checks whether resource allocation information included in the RACH response message indicates that a frequency band that was used for transmitting the preamble has been allocated(S105). If a frequency band different from the frequency band used for transmitting the RACH preamble has been allocated, the MS extracts resource allocation information from the RACH response message(S106) and transmits the first uplink message by using a frequency band corresponding to the resource allocation information(S107).
Abstract translation: 提供源分配请求方法和资源分配方法以允许BS（基站）优先地将经过验证的资源分配给处于不良信道状态的移动终端。 MS（移动站）通过使用从BS发送的公共导频信号来测量CQI（信道质量信息）（S101）。 所测量的CQI包括在RACH（随机接入信道）前同步码中，并发送给BS（S102）。 MS检查BS是否正常接收到RACH前导码（S103）。 当从BS接收到RACH响应消息时，MS检查包括在RACH响应消息中的资源分配信息是否已经分配了用于发送前同步码的频带（S105）。 如果已经分配了与用于发送RACH前导码的频带不同的频带，则MS从RACH响应消息中提取资源分配信息（S106），并且通过使用与资源分配信息对应的频带来发送第一上行链路消息 （S107）。
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Patent Agency Ranking
公开(公告)号：KR1020080035498A
公开(公告)日：2008-04-23
申请号：KR1020070105209
申请日：2007-10-18
CPC classification number: H04J11/0069 , H04L5/0007 , H04L5/0023 , H04L5/0048 , H04L25/0204 , H04L25/0226 , H04L25/0228 , H04L25/03866 , H04L27/261 , H04L27/2613 , H04L27/2656 , H04L27/2657 , H04L27/2675 , H04W56/0085 , Y02D70/00 , Y02D70/1262 , H04W48/16
Abstract: A cell search method in an OFDM(Orthogonal Frequency Division Multiplexing) cellular system including primary and secondary synchronous channels formed according to TDM(Time Division Multiplexing) is provided to smoothly perform handover by effectively searching an adjacent cell and reduce power consumption of a battery of a mobile station. A sync block synchronization is acquired(S1200). A frame boundary and scrambling code group, the number of BCH(Broadcasting Channel) antennas, and whether or not a pilot hopping has been performed are detected(S1210). Scrambling codes of a group are detected based on the acquired information by using a pilot symbol(S1220). A BCH is coherent-demodulated by using the acquired scrambling codes(S1230). It is checked whether or not a CRC(Cyclic Redundancy Check) error occurs(S1240).
Abstract translation: 提供了包括根据TDM（时分多路复用）形成的主同步信道和辅同步信道的OFDM（正交频分复用）蜂窝系统中的小区搜索方法，以通过有效地搜索相邻小区来平滑地执行切换，并且降低电池的功率消耗 一个移动台。 获取同步块同步（S1200）。 检测帧边界和扰码组，BCH（广播信道）天线的数量以及是否执行了导频跳频（S1210）。 基于通过使用导频符号获取的信息来检测组的加扰码（S1220）。 通过使用所获取的扰码对BCH进行相干解调（S1230）。 检查是否发生CRC（循环冗余校验）错误（S1240）。
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公开(公告)号：KR1020080022065A
公开(公告)日：2008-03-10
申请号：KR1020070089928
申请日：2007-09-05
CPC classification number: H04J11/0073 , H04J11/0076 , H04L7/0008 , H04L27/2656 , H04W56/001
Abstract: A structure of a synchronization channel in an OFDM(Orthogonal Frequency Division Multiplexing) cellular mobile communication system is provided to improve a frequency error tracking performance of a terminal by increasing the number of repetition patterns in a secondary synchronous channel signal. A frame is formed by using plural symbols. The frame is transmitted through a forward link. The frame includes a primary SCH(Synchronous Channel) and a secondary SCH which are classified according to a frequency in the symbol at the same time. A cell ID is specified by a pattern in a code number which is detected by using the main and secondary synchronous channels. The primary synchronous channels are allocated at predetermined intervals according to the frequency in the symbol. The secondary synchronous channel is allocated in the frequency in the non-allocated symbol, so that more secondary SCHs are allocated in the symbol than the main synchronous channels.
Abstract translation: 提供了OFDM（正交频分复用）蜂窝移动通信系统中的同步信道的结构，以通过增加辅同步信道信号中的重复模式的数量来改善终端的频率误差跟踪性能。 通过使用多个符号形成帧。 帧通过前向链路传输。 帧包括主SCH（同步信道）和辅SCH，它们根据符号中的频率被同时分类。 小区ID由通过使用主和辅同步信道检测到的码号中的模式指定。 根据符号中的频率，以预定间隔分配主同步信道。 次同步信道在未分配符号中以频率分配，使得在符号中比主同步信道更多的次SCH被分配。
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公开(公告)号：KR1020070107614A
公开(公告)日：2007-11-07
申请号：KR1020070042760
申请日：2007-05-02
CPC classification number: H04L27/2601 , H04L5/0007 , H04L5/0037 , H04L5/0053
Abstract: A method for transmitting/receiving downlink scheduling information in an OFDMA(Orthogonal Frequency Division Multiple Access) system is provided to reduce the quantity of scheduling information by using a resource block having a minimum resource block index, a maximum resource block index, or a channel with a high quality. A method for transmitting/receiving downlink scheduling information in an OFDMA system includes the steps for allocating at least one of resource blocks comprising downlink resources of the OFDMA system, to each terminal(S200); selecting the resource block for each terminal on the basis of the size of indexes of each allocated resource block(S210); generating scheduling information including terminal resource allocation information and terminal discrimination information, for each terminal(S220); and transmitting the scheduling information of the terminal to each terminal by using the selected resource block(S234).
Abstract translation: 提供了一种用于在OFDMA（正交频分多址）系统中发送/接收下行链路调度信息的方法，通过使用具有最小资源块索引，最大资源块索引或信道的资源块来减少调度信息的数量 具有高品质。 在OFDMA系统中发送/接收下行链路调度信息的方法包括：向每个终端分配包括OFDMA系统的下行资源的资源块中的至少一个的步骤（S200）。 基于每个分配的资源块的索引的大小来选择每个终端的资源块（S210）; 为每个终端产生包括终端资源分配信息和终端识别信息的调度信息（S220）; 以及通过使用所选择的资源块将终端的调度信息发送给每个终端（S234）。
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公开(公告)号：KR101012857B1
公开(公告)日：2011-02-08
申请号：KR1020070105209
申请日：2007-10-18
CPC classification number: H04J11/0069 , H04L5/0007 , H04L5/0023 , H04L5/0048 , H04L25/0204 , H04L25/0226 , H04L25/0228 , H04L25/03866 , H04L27/261 , H04L27/2613 , H04L27/2656 , H04L27/2657 , H04L27/2675 , H04W56/0085 , Y02D70/00 , Y02D70/1262
Abstract: 본 발명은 제1차 동기채널과 제2차 동기채널이 TDM으로 구성된 OFDM 셀룰라 시스템에서의 셀 탐색 방법에 관한 것으로, 단말이 수신한 프레임에 포함된 1차 동기채널 심볼을 이용하여 싱크블록 동기 및 1차 동기채널 시퀀스 번호를 획득하는 단계, 상기 싱크블록 동기 및 상기 단말이 수신한 프레임에 포함된 2차 동기채널 심볼을 이용하여 상기 프레임의 경계 및 스크램블링 코드 그룹을 검출하는 단계 및 상기 1차 동기채널 시퀀스 번호 및 상기 스크램블링 코드 그룹을 이용하여 스크램블링 코드를 획득하는 단계를 포함하는 것을 특징으로 하며, 낮은 복잡도로 셀 탐색 시간을 줄일 수 있다.
OFDM, 동기채널, 셀 탐색, BCHAbstract translation: 提供了使用正交频分复用（OFDM）的蜂窝系统中的前向链路，公共导频信道结构和初始小区搜索方法以及用于切换的相邻小区搜索方法的同步信道。 基于时分复用（TDM）配置主同步信道和辅同步信道的OFDM蜂窝系统中的小区搜索方法包括：使用包括在主同步信道符号中的主同步信道符号来获取同步块同步和主同步信道序列号 由终端接收的帧，检测帧的边界和使用同步块的扰码组和由终端接收的帧中包括的辅同步信道符号，以及使用主同步信道序列号获取扰码，并且 扰码组，从而以低复杂度减少小区搜索时间。
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公开(公告)号：KR100959899B1
公开(公告)日：2010-05-27
申请号：KR1020080004571
申请日：2008-01-15
Abstract: 무선 신호 전송 장치는 Ack/Nack 신호 또는 CQI 신호 각각의 비트 정보를 채널 코딩하는 채널 인코딩부, 비트 정보를 디지털 변조하여 디지털 변조 심볼을 생하는 디지털 변조부, 디지털 변조 심볼을 차등 위상 변조하여 위상 변조 심볼을 생성하는 차등 위상 변조부, 위상 변조 심볼에 코드를 적용하여 복수의 코드 심볼을 생성하는 벡터 곱셈부, 복수의 코드 심볼을 역푸리에 변환하여 시간 영역의 신호를 생성하는 역푸리에 변환부 및 시간 영역의 신호를 전송하는 송신부를 포함한다.
이와 같은 무선 신호 전송 장치는 상향 링크를 통해 감소된 PAPR(Peak to Average Power Ratio)을 갖는 신호로 제어 신호를 전송할 수 있다.
제어 신호, PAPR, 차등 위상, 상향 링크
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