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公开(公告)号：KR1020080114102A
公开(公告)日：2008-12-31
申请号：KR1020070063345
申请日：2007-06-26
Applicant: 삼성전자주식회사
CPC classification number: H04B7/2693 , H04W56/001 , H04L27/2656
Abstract: A system for acquiring base station synchronization and method thereof are provided to reduce an installation cost of a base station by acquiring synchronization even though the base station has not a GPS receiver. A method for acquiring base station synchronization comprises the following steps: a step for transmitting a frame generated according to acquired frame synchronization to at least one or more base station after a first base station acquires frame synchronization by receiving a GPS signal including synchronous acquisition information from an artificial satellite(300); a step for estimating up link frame first synchronization time of a second base station using a receiving time of down link frame if the second base station receives the down link frame from among frames(308); a step for transmitting a first message generated by the second base station to the first base station in the up link frame first synchronization time of the second base station(312); a step for calculating a synchronization time offset value by comparing a receiving time of the first message with the up link frame synchronization time about the first base station if the first base station receives the first message(314); a step for transmitting a second message including a synchronization time offset value to the second base station(316); and a step for acquiring a frame synchronization by using the synchronization time offset value included in the second message if the second base station receives the second message(320).
Abstract translation: 提供了一种用于获取基站同步的系统及其方法，以便即使基站还没有GPS接收机来通过获取同步来降低基站的安装成本。 一种用于获取基站同步的方法，包括以下步骤：在第一基站通过接收包括同步采集信息的GPS信号在第一基站获取帧同步之后，将根据所获取的帧同步产生的帧发送到至少一个或多个基站的步骤， 人造卫星（300）; 如果第二基站从帧（308）接收到下行链路帧，则使用下行链路帧的接收时间估计第二基站的链路帧第一同步时间的步骤; 用于在第二基站（312）的上行链路帧第一同步时间中将由第二基站生成的第一消息发送到第一基站的步骤; 如果第一基站接收到第一消息（314），则通过将第一消息的接收时间与关于第一基站的上行链路帧同步时间进行比较来计算同步时间偏移值的步骤; 用于将包括同步时间偏移值的第二消息发送到所述第二基站的步骤; 以及如果所述第二基站接收到所述第二消息（320），则通过使用包括在所述第二消息中的所述同步时间偏移值来获取帧同步的步骤。
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公开(公告)号：KR100860666B1
公开(公告)日：2008-09-26
申请号：KR1020070002171
申请日：2007-01-08
Applicant: 삼성전자주식회사
CPC classification number: H04B1/123 , H04B7/0857
Abstract: 본 발명은 통신 시스템에서, 서빙 기지국으로부터 상기 서빙 기지국이 미리 설정되어 있는 주파수 영역에 적용할 제1변조 방식에 대한 정보를 수신하고; 이후, 상기 주파수 영역을 통해 신호를 수신하고; 상기 수신 신호를 사용하여 적어도 1개의 인접 기지국이 상기 주파수 영역에 적용할 변조 방식을 추정하여 제2변조 방식으로 결정하고; 상기 수신 신호를 추정하여 채널 상태 정보를 생성하고; 상기 채널 상태 정보와, 상기 제1변조 방식 정보 및 제2변조 방식을 사용하여 간섭 제거 방식을 사용할지 여부를 선택한다.
간섭 신호 변조 방식, 자기 신호 변조 방식, 추정 간섭 신호 변조 방식, 임시 간섭 신호 변조 방식, 간섭 제거 방식 사용 여부 선택, 최대 비 컴바이닝(MRC: Maximum Ratio Combining) 방식, 최소 평균 제곱 에러(MMSE: Minimum Mean Square Error) 방식, 간섭 신호 변조 방식Abstract translation: 根据本发明，在通信系统中，服务基站接收关于要应用于由服务基站预设的频率区域的第一调制方案的信息; 通过频域接收信号; 至少一个相邻基站使用所接收的信号来估计要应用于频域的调制方案，并且确定第二调制方案; 估计接收到的信号以生成信道状态信息; 并且使用信道状态信息，第一调制方案信息和第二调制方案来选择是否使用干扰消除方案。
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公开(公告)号：KR1020080078983A
公开(公告)日：2008-08-29
申请号：KR1020070018929
申请日：2007-02-26
CPC classification number: H04W16/26 , H04B7/15542 , H04W72/0413 , H04W72/10 , H04W72/1268 , H04W74/06 , H04W84/047
Abstract: An apparatus and a method for allocating uplink radio resources in a broadband wireless communication system are provided to allocate uplink radio resources for multi-hop to reduce delay in uplink resource allocation of a relay station for real time traffic and achieve efficient resource management of a base station. In an operation of a relay station to allocate uplink radio resources in a broadband wireless communication system, a resource request message received from a terminal is relayed to a base station(408). Data is received from the terminal(412). When the received data corresponds to non real time traffic, the data is classified by traffics and queued. The queue state is confirmed and the base station is requested to transmit required radio resources(410).
Abstract translation: 提供一种用于在宽带无线通信系统中分配上行链路无线电资源的装置和方法，以分配用于多跳的上行链路无线电资源，以减少用于实时业务的中继站的上行链路资源分配中的延迟，并实现基站的有效资源管理 站。 在中继站在宽带无线通信系统中分配上行无线资源的操作中，将从终端接收的资源请求消息中继到基站（408）。 从终端（412）接收数据。 当接收到的数据对应于非实时流量时，数据按流量分类并排队。 确认队列状态，并请求基站发送所需无线资源（410）。
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公开(公告)号：KR1020080076167A
公开(公告)日：2008-08-20
申请号：KR1020070015731
申请日：2007-02-15
Applicant: 삼성전자주식회사
CPC classification number: H04L1/1812 , H04L1/0047 , H04L1/0057 , H04L1/1835
Abstract: An apparatus and a method for HARQ(Hybrid Automatic Retransmission reQuest) in a telecommunication system are provided to considerably reduce an iteration number of a decoder by using LLR(Log Likelihood Ratio) values and final state values of the decoder in decoding a retransmission packet. An apparatus for HARQ(Hybrid Automatic Retransmission reQuest) in a telecommunication system includes an encoder(202), a modulator(204), a baseband processor(206), an RF receiver(208), a buffer(210), and an HARQ controller(200). The encoder generates an encoding packet by encoding received data and stores the encoding packet in the buffer. The modulator generates modulation symbols. The baseband processor performs baseband processing with data received from the modulator. The RF receiver converts sample data received from the baseband processor into an analog signal and converts the analog signal into an RF bandwidth signal. The HARQ controller monitors response signals fed back from the receiver and determines retransmission according to the response signals.
Abstract translation: 提供了一种用于电信系统中的HARQ（混合自动重发请求）的装置和方法，用于通过在解码重发分组中使用LLR（对数似然比）值和解码器的最终状态值来显着地减少解码器的迭代次数。 一种用于电信系统中的HARQ（混合自动重传请求）的装置包括编码器（202），调制器（204），基带处理器（206），RF接收机（208），缓冲器（210）和HARQ 控制器（200）。 编码器通过对接收的数据进行编码来生成编码分组，并将编码分组存储在缓冲器中。 调制器产生调制符号。 基带处理器利用从调制器接收的数据进行基带处理。 RF接收器将从基带处理器接收的采样数据转换为模拟信号，并将模拟信号转换为RF带宽信号。 HARQ控制器监视从接收机反馈的响应信号，并根据响应信号确定重传。
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公开(公告)号：KR1020080028625A
公开(公告)日：2008-04-01
申请号：KR1020060094156
申请日：2006-09-27
Applicant: 삼성전자주식회사
CPC classification number: H04L27/2657 , H04L25/0232 , H04L27/2675
Abstract: An apparatus and a method for compensating for a common phase error in a multi-carrier communication system are provided to control a compensation type adaptively according to a channel environment of the system, thereby improving the efficiency of the entire system. A method for compensating a common phase error in a multi-carrier communication system includes the steps of: detecting an autocorrelation value of a reference signal estimated from a reference symbol, and a cross-correlation value between a channel estimation value of the reference signal and a really received reference signal(815,817); creating the ratio of the autocorrelation value to the cross-correlation value as a exponential value of the common phase error; creating a conjugate value of the exponential value and compensating for the common phase error for symbols expect for the reference symbol among a plurality of the symbols(819,821).
Abstract translation: 提供一种用于补偿多载波通信系统中的公共相位误差的装置和方法，以根据系统的信道环境自适应地控制补偿类型，从而提高整个系统的效率。 一种用于补偿多载波通信系统中的公共相位误差的方法，包括以下步骤：检测从参考符号估计的参考信号的自相关值，以及参考信号的信道估计值与 真正收到的参考信号（815,817）; 产生自相关值与互相关值的比值作为公共相位误差的指数值; 创建指数值的共轭值，并补偿多个符号（819,821）中对于参考符号期望的符号的公共相位误差。
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Patent Agency Ranking
公开(公告)号：KR1020080000385A
公开(公告)日：2008-01-02
申请号：KR1020060058162
申请日：2006-06-27
CPC classification number: H04L5/14 , H04B7/2643 , H04W72/12
Abstract: A time division scheduling apparatus and a method in a time division duplex system are provided to reduce interference between adjacent cells by scheduling and time-dividing time slots of uplink and downlink according to a channel condition. A transmission end estimates a channel for transmitting a signal to a reception end by using a signal received from the reception end(701). The transmission end determines a channel occupancy rate to transmit the signal to the reception end by using the estimated channel information(703). The transmission end determines a channel occupancy time for transmitting the signal according to the channel occupancy rate(705). The transmission end allocates a channel according to the determined channel occupancy time(707).
Abstract translation: 提供了一种时分双工系统中的时分调度装置和方法，用于根据信道条件调度和分时上行链路和下行链路的时隙来减少相邻小区之间的干扰。 发送端通过使用从接收端接收的信号（701）来估计用于向接收端发送信号的信道。 发送端通过使用估计信道信息来确定将信号发送到接收端的信道占用率（703）。 发送端确定根据信道占用率发送信号的信道占用时间（705）。 发送端根据确定的信道占用时间（707）分配信道。
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公开(公告)号：KR1020070115377A
公开(公告)日：2007-12-06
申请号：KR1020060049686
申请日：2006-06-02
CPC classification number: H04L1/1848 , H04L1/1887 , H04L27/26 , H04L47/32 , H04L2001/0097
Abstract: An apparatus and a method for automatic repeat request in a multi-hop system based on orthogonal frequency division multiplexing access are provided to enable a relay station to manage ARQ(Automatic Repeat reQuest) state transparently between a terminal and a base station. According to a method for ARQ(Automatic Repeat reQuest) in a multi-hop system based on orthogonal frequency division multiplexing, data is transmitted to a destination when the data is received from a source. When a feedback message is received from the destination, the feedback message received from the source is transmitted. When the data is not received from the source, a feedback message dedicated for a relay station is transmitted.
Abstract translation: 提供了一种基于正交频分复用接入的多跳系统中的自动重发请求的装置和方法，使得中继站能够在终端和基站之间透明地管理ARQ（Automatic Repeat reQuest）状态。 根据基于正交频分复用的多跳系统中的ARQ（Automatic Repeat reQuest）的方法，当从源接收数据时，将数据发送到目的地。 当从目的地接收到反馈消息时，发送从源接收到的反馈消息。 当没有从源接收到数据时，发送专用于中继站的反馈消息。
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公开(公告)号：KR1020070109582A
公开(公告)日：2007-11-15
申请号：KR1020060042742
申请日：2006-05-12
CPC classification number: H04W28/22 , H04B7/155 , H04B7/2606 , H04L47/14 , H04L47/17 , H04L47/22 , H04L47/283 , H04L47/30 , H04L47/365 , H04W8/24 , H04W28/06 , H04W28/14 , H04W48/16 , H04W84/047 , H04W88/08 , H04W84/18
Abstract: An apparatus and a method for determining a data rate in a multi-hop relay system are provided to buffer data stably to be transmitted to a next frame by a relay station, thereby reducing jitter due to length change of the relay station and reducing resource consumption between the relay station and a base station. An apparatus for determining a data rate in a multi-hop relay system includes a receiver, a computation unit, and a scheduler. The receiver(900) receives queue length information and channel information related to a terminal from a relay station. The computation unit(904) determines a transmission rate between a base station and a relay station related to data of a terminal using the channel information and the queue length information. The scheduler(906) performs resource scheduling related to communication between the base station and the relay station using the transmission rate from the computation unit.
Abstract translation: 提供了一种用于确定多跳中继系统中的数据速率的装置和方法，用于缓冲数据，以稳定地中继站发送到下一帧，从而减少由于中继站的长度变化引起的抖动，并减少资源消耗 在中继站和基站之间。 用于确定多跳中继系统中的数据速率的装置包括接收机，计算单元和调度器。 接收机（900）从中继站接收队列长度信息和与终端相关的信道信息。 计算单元（904）使用信道信息和队列长度信息确定与终端的数据相关的基站和中继站之间的传输速率。 调度器（906）使用来自计算单元的传输速率来执行与基站与中继站之间的通信有关的资源调度。
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公开(公告)号：KR1020070074707A
公开(公告)日：2007-07-18
申请号：KR1020060002577
申请日：2006-01-10
Applicant: 삼성전자주식회사
IPC: H04B1/7097
CPC classification number: H04L27/22 , H04L25/061 , H04L27/2647
Abstract: An interference cancellation device in a wireless communication system and a method thereof are provided to insert a virtual decision signal point corresponding to a zero point into a symbol demapper within an interference canceller, thus the interference canceller can operate in a robust way irrespective of existence of an interference signal. An interference canceller(210) generates decision signal points by adding virtual signal points to zero points and decision signal points in accordance with a modulation mode, and regenerates an interference signal for interference cancellation among receiving signals to output the regenerated signal. The canceller(210) includes a symbol demapper(215) which compares a predetermined threshold value in accordance with system setup with size of a complex value of an inputted signal, maps the virtual signal points of the zero points with the decision signal points to output the mapped points if the size of the complex value is less than the threshold value, and which maps one of the decision signal points in accordance with the modulation mode of the inputted complex value to output the mapped points.
Abstract translation: 提供无线通信系统中的干扰消除装置及其方法，将对应于零点的虚拟判决信号点插入到干扰消除器内的符号解映射器中，因此干扰消除器可以以鲁棒的方式工作，而不管 干扰信号。 干扰消除器（210）根据调制方式将虚信号点加到零点和判定信号点，生成判定信号点，并且在接收信号之间再生用于干扰消除的干扰信号，以输出再生信号。 消除器（210）包括符号解映射器（215），其将系统设置中的预定阈值与输入信号的复数值的大小进行比较，将零点的虚拟信号点与判定信号点映射到输出 如果复数值的大小小于阈值，则根据输入的复数值的调制方式映射一个判定信号点，以输出映射点。
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公开(公告)号：KR1020070074498A
公开(公告)日：2007-07-12
申请号：KR1020070002171
申请日：2007-01-08
Applicant: 삼성전자주식회사
CPC classification number: H04B1/123 , H04B7/0857 , H04B7/0854 , H04L1/0048 , H04L25/03821
Abstract: An apparatus and a method for receiving signals in a communication system are provided to improve signal reception performance by selecting whether to use an interference cancellation scheme, correspondingly to a modulation scheme. An apparatus for receiving signals in a communication system comprises a demodulator(213), a controller(227), a channel estimator(215), and a selector(217). The demodulator(213) receives information about the first modulation scheme, which a serving BS(Base Station) will apply to a frequency domain, from the serving BS, demodulates it. Afterwards, the demodulator(213) receives a signal through the frequency domain and demodulates the received signal. The controller(227) estimates a modulation scheme, which a neighbor BS will apply to the frequency domain, by using the received signal and determines the estimated modulation scheme as the second modulation scheme. The channel estimator(215) estimates the received signal and creates channel state information. The selector(217), based on the channel state information and the information about the first and second modulation schemes, selects whether to use an interference cancellation scheme.
Abstract translation: 提供一种用于在通信系统中接收信号的装置和方法，用于通过相应于调制方案选择是否使用干扰消除方案来提高信号接收性能。 一种用于在通信系统中接收信号的装置，包括解调器（213），控制器（227），信道估计器（215）和选择器（217）。 解调器（213）从服务BS接收关于服务BS（基站）将应用于频域的第一调制方案的信息，对其进行解调。 之后，解调器（213）通过频域接收信号并对接收到的信号进行解调。 控制器（227）通过使用接收到的信号估计相邻BS将应用于频域的调制方案，并将估计的调制方案确定为第二调制方案。 信道估计器（215）估计接收到的信号并创建信道状态信息。 选择器（217）基于信道状态信息和关于第一和第二调制方案的信息，选择是否使用干扰消除方案。
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