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公开(公告)号：KR100948798B1
公开(公告)日：2010-03-24
申请号：KR1020070010607
申请日：2007-02-01
Applicant: 삼성전자주식회사
IPC: H04B7/26
CPC classification number: H04W72/1252 , H04W72/1231 , H04W72/1268
Abstract: 본 발명은 광대역 무선통신 시스템에서 상향링크 부하(Load) 조절에 관한 것으로, 각 단말에게 할당할 자원량 및 MCS(Modulation and Coding Scheme) 레벨을 결정하는 결정기와, 상기 자원량 및 MCS 레벨을 이용하여 각 단말의 부하를 추정하는 추정기와, 상기 각 단말의 부하가 제1임계값을 초과하지 않게 상기 자원량 및 MCS 레벨을 조절하도록 제어하는 제어기를 포함하여, 상향링크에 대한 부하 조절을 수행함으로써, 인접 셀에 영향을 미치는 간섭을 감소시킬 수 있다.
부하 조절(Load Control), MCS(Modulation and Coding Scheme) 레벨, 인접 셀 간섭-
公开(公告)号：KR100938070B1
公开(公告)日：2010-01-21
申请号：KR1020070088594
申请日：2007-08-31
Applicant: 삼성전자주식회사
Abstract: 본 발명은 안테나를 그룹핑하여 사용하는 다중 안테나 시스템에서 피드백 정보를 생성하여 전송하는 데이터 수신장치 및 방법과, 상기 피드백 정보에 의해 선택되는 전송 모드에 의해 사용자의 데이터 스트림을 전송하는 송신장치 및 방법에 관한 것이다.
이를 위해 수신장치에서는 최대 채널 품질 정보와 상기 최대 채널 품질에 대응한 안테나 그룹 인덱스, 랭크 정보 및 상기 랭크 정보에 대응한 잔존 채널 품질 정보에 의해 피드백 정보를 생성하며, 상기 생성된 피드백 정보를 송신장치로 전송한다. 그리고 송신장치는 상기 피드백 정보에 의해 다중 사용자 모드 또는 단일 사용자 모드 중 하나의 전송 모드를 선택하고, 상기 선택된 전송 모드에 의해 선택된 사용자의 데이터 스트림을 복수의 안테나 그룹 또는 하나의 안테나 그룹을 통해 전송한다.
안테나 그룹, 폐 루프, MIMO SYSTEM, 피드백 정보, 단일 사용자 모드, 다중 사용자 모드-
公开(公告)号：KR1020090004370A
公开(公告)日：2009-01-12
申请号：KR1020070127995
申请日：2007-12-11
Applicant: 삼성전자주식회사
CPC classification number: H04W52/245 , H04B7/2606 , H04W24/10 , H04W52/241 , Y02D70/00
Abstract: An apparatus for setting the transmission power of a small-sized base station and a method therefor are provided to enable the small-sized base station to optimize the transmission power adaptively according to the state of an external base station. A small-sized base station operates in a terminal mode to scan neighboring base stations(201), measures the signal strength and thermal noise of the scanned neighboring base stations(203,205), and then selects the biggest value on the measured results(207) to set a target RSSI by adding a setup value to the selected result. The small-sized base station is converted into a general base station mode to communicate with terminals belonging to a coverage area(209), transmits a scan instruction message to the terminals within its coverage area(211), receives a scan report message including the scanning result from the terminals(213), and then selects the maximum value from the signal strengths of neighboring base stations which at least one terminal reports to set the selected maximum value as the maximum RSSI(215). Finally, the small-sized base station compares whether the maximum RSSI is identical to the target RSSI(217), if the RSSIs are different, determines whether the maximum RSSI is bigger than the target RSSI(219), and if so, reduces the transmission power by the set value(221).
Abstract translation: 提供一种用于设置小型基站的发送功率的装置及其方法，以使小型基站能够根据外部基站的状态自适应地优化发送功率。 小型基站以终端模式操作以扫描相邻基站（201），测量所扫描的相邻基站（203,205）的信号强度和热噪声，然后选择测量结果上的最大值（207） 通过向所选结果添加设置值来设置目标RSSI。 将小型基站转换为与属于覆盖区域（209）的终端通信的通用基站模式，向其覆盖区域（211）内的终端发送扫描指示消息，接收包括 （213）的扫描结果，然后从至少一个终端报告的相邻基站的信号强度中选择最大值，以将所选择的最大值设置为最大RSSI（215）。 最后，如果RSSI不同，则确定最大RSSI是否大于目标RSSI（219），则小型基站比较最大RSSI是否与目标RSSI相同（217），如果是，则减少 发送功率设定值（221）。
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公开(公告)号：KR1020080075291A
公开(公告)日：2008-08-18
申请号：KR1020070014249
申请日：2007-02-12
Applicant: 삼성전자주식회사
Abstract: An apparatus and a method for determining an adaptive target PER(Packet Error Rate) in a mobile communication system are provided to maximize the average capacity and improve system performance by determining an adaptive target PER value in consideration of a change of radio channels and HARQ(Hybrid Automatic Repeat reQuest). A base station initializes a target PER variable parameter(200). In this case, the base station sets the target PER variable parameter to "0". Using the target PER variable parameter, the base station produces a target PER value(202). Then the base station executes outer loop power control in order to maintain a measured PER value so as not to be too high or low as compared to the target PER value(204). The base station controls the output of each terminal through inner loop power control(206). The base station executes load control in consideration of interference by the output of each terminal(208). Referring to the number of successfully received bits and the number of frames, the base station produces the average capacity(210). In case a radio channel is in a good condition(212), the base station compares the present average capacity with the previous average capacity(214). If the difference between the present average capacity and the previous average capacity is larger than a reference value, the base station increases the target PER variable parameter by a preset step(222).
Abstract translation: 提供了一种用于确定移动通信系统中的自适应目标PER（分组差错率）的装置和方法，以通过考虑无线电信道和HARQ的改变来确定自适应目标PER值来最大化平均容量并提高系统性能 混合自动重复请求）。 基站初始化目标PER变量参数（200）。 在这种情况下，基站将目标PER变量参数设定为“0”。 使用目标PER可变参数，基站产生目标PER值（202）。 然后，基站执行外部环路功率控制，以便与目标PER值（204）相比保持测量的PER值，使其不会过高或过低。 基站通过内环功率控制（206）控制每个终端的输出。 考虑到每个终端（208）的输出的干扰，基站执行负载控制。 参考成功接收的比特数和帧数，基站产生平均容量（210）。 在无线电信道处于良好状态（212）的情况下，基站将当前平均容量与先前的平均容量进行比较（214）。 如果当前平均容量和先前平均容量之间的差异大于参考值，则基站将目标PER可变参数增加预设步骤（222）。
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公开(公告)号：KR1020080072589A
公开(公告)日：2008-08-06
申请号：KR1020080010885
申请日：2008-02-01
Applicant: 삼성전자주식회사
CPC classification number: H04W16/14 , H04L5/06 , H04L5/1469
Abstract: A system and a method for transceiving a signal in a communication system are provided to transmit signals to a multi-mode terminal in plural communication systems supporting different communication methods, thereby improving the service efficiency and QOS(Quality of Service) of each communication system. A method for acquiring resource utilization information from a terminal in a BS(Base Station) comprises the following steps of: receiving the resource utilization information of band 1 and band 2(701); analyzing a degree of the resource utilization of an SBC(Strictly Backward Compatibility) communication system using the resource utilization information of band 1 and band 2 and estimating unused resources(703); and transmitting data using the unused resources of band 1 and band 2, and band 3(705).
Abstract translation: 提供一种用于在通信系统中收发信号的系统和方法，用于在支持不同通信方式的多个通信系统中向多模终端发送信号，从而提高每个通信系统的服务效率和服务质量（服务质量）。 一种用于从BS（基站）中的终端获取资源利用信息的方法，包括以下步骤：接收频带1和频带2的资源利用信息（701）; 使用频带1和频带2的资源利用信息分析SBC（严格向后兼容性）通信系统的资源利用程度，并估计未使用的资源（703）。 并使用频带1和频带2的未使用资源以及频带3（705）发送数据。
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Patent Agency Ranking
公开(公告)号：KR1020080072204A
公开(公告)日：2008-08-06
申请号：KR1020070010635
申请日：2007-02-01
Applicant: 삼성전자주식회사
Abstract: A method and an apparatus for transceiving data in a communication system are provided to supply a frequency structure including a frequency band supporting plural compatible communication systems and supply a transmitter and a receiver operated according to the frequency structure, thereby improving frequency usage efficiency. A data transmitter(300) comprises a data scheduler(302), a serial/parallel converter(304), an existing and first system modem(306), an IFFT(Inverse Fast Fourier Transform) block(308), a parallel/serial converter(310), a data separating unit(312), a serial/parallel converter(314), a second system modem(316), an IFFT block(318), a parallel/serial converter(320), an entire FFT block and a transmitting antenna(324). The data separating unit determines a frequency band and standards of a system according to a supporting system of a receiver to which data will be transmitted. The data separating unit separates transmission data according to the determined usage frequency band and system standards. The scheduler schedules each of the separated data.
Abstract translation: 提供用于在通信系统中收发数据的方法和装置，以提供包括支持多个兼容通信系统的频带的频率结构，并提供根据频率结构操作的发射机和接收机，从而提高频率使用效率。 数据发送器（300）包括数据调度器（302），串行/并行转换器（304），现有和第一系统调制解调器（306），IFFT（快速傅里叶逆变换）块（308），并行/串行 转换器（310），数据分离单元（312），串行/并行转换器（314），第二系统调制解调器（316），IFFT块（318），并行/串行转换器（320），整个FFT块 和发射天线（324）。 数据分离单元根据将被发送数据的接收机的支持系统来确定系统的频带和标准。 数据分离单元根据确定的使用频带和系统标准分离发送数据。 调度器调度每个分离的数据。
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公开(公告)号：KR1020080072193A
公开(公告)日：2008-08-06
申请号：KR1020070010607
申请日：2007-02-01
Applicant: 삼성전자주식회사
IPC: H04B7/26
CPC classification number: H04W72/1252 , H04W72/1231 , H04W72/1268 , H04W28/08
Abstract: An apparatus and a method for controlling uplink loads in a broadband wireless communication system are provided to enable a base station to control a resource amount and an MCS level of terminals, thereby reducing interference to a neighboring cell. A resource and MCS determiner(305) determines an MCS(Modulation and Coding Scheme) level and the amount of resources to be allocated to each terminal. A load estimator(307) estimates loads of each terminal by using the resource amount and MCS level. A scheduling controller(309) performs a control operation so as to control the resource amount and MCS level, thereby preventing the loads of each terminal from exceeding a predetermined threshold value.
Abstract translation: 提供了一种用于控制宽带无线通信系统中的上行链路负载的装置和方法，以使得基站能够控制终端的资源量和MCS级别，从而减少对相邻小区的干扰。 资源和MCS确定器（305）确定MCS（调制和编码方案）级别和要分配给每个终端的资源量。 负载估计器（307）通过使用资源量和MCS级别估计每个终端的负载。 调度控制器（309）执行控制操作以控制资源量和MCS级别，从而防止每个终端的负载超过预定阈值。
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公开(公告)号：KR1020080064239A
公开(公告)日：2008-07-09
申请号：KR1020070000905
申请日：2007-01-04
Applicant: 삼성전자주식회사
IPC: H04B7/08
CPC classification number: H04L25/0202 , H04B7/0413 , H04B7/0851 , H04L1/005 , H04L1/06 , H04L25/03318
Abstract: An apparatus and a method for receiving a signal in a wireless communication system are provided to eliminate the latency generated by applying SIC/PIC(Serial Interference Cancellation/Parallel Interference Cancellation) after completing a decoding process due to applying the SIC/PIC while a decoder performs decoding repeatedly. A MIMO detector(202) estimates an interference signal and a desired signal by detecting receiving signals as the MIMO(Multiple Input Multiple Output) way. A first decoder(204) decodes the interference signals repeatedly. A second decoder(208) decodes the desired signals repeatedly. An LLR updating unit(212) updates an internal LLR value of the second decoder by using the internal LLR of the first decoder. The first decoder detects reversed LLR when repeating the decoding, and provides the detected LLR to the LLR updating unit.
Abstract translation: 提供了一种用于在无线通信系统中接收信号的装置和方法，以消除由于应用SIC / PIC而在完成解码处理之后应用SIC / PIC（串行干扰消除/并行干扰消除）产生的等待时间，同时解码器 重复执行解码。 MIMO检测器（202）通过检测接收信号作为MIMO（多输入多输出）方式来估计干扰信号和期望信号。 第一解码器（204）重复地解码干扰信号。 第二解码器（208）重复地解码所需信号。 LLR更新单元（212）通过使用第一解码器的内部LLR来更新第二解码器的内部LLR值。 第一解码器在重复解码时检测到反向LLR，并将检测到的LLR提供给LLR更新单元。
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公开(公告)号：KR1020080062234A
公开(公告)日：2008-07-03
申请号：KR1020060137752
申请日：2006-12-29
Applicant: 삼성전자주식회사
IPC: H04B7/26
CPC classification number: H04W48/16 , H04L1/0001 , H04L5/0007
Abstract: An apparatus and a method for ranging in a broadband wireless communication system are provided to reduce the time delay owing to the ranging procedures by directly attempting the ranging into an SBC(Strictly Backward Compatibility) bandwidth without performing random back off. A method for ranging of a terminal which connects to a base station storing different systems having compatibility comprises following steps of: transmitting a first ranging code into a ranging section of a first system(407); testing whether an response message about the first ranging code is received(409); transmitting a second ranging code into the ranging section of a second system(415) if the response message is not received. Iif the response message is received, the rest network access procedures are performed(419).
Abstract translation: 提供了一种用于在宽带无线通信系统中进行测距的装置和方法，以通过直接尝试将测距转换成SBC（严格向后兼容性）带宽而不执行随机退避，从而减少由于测距过程引起的时间延迟。 一种连接到存储具有兼容性的不同系统的基站的终端的测距方法包括以下步骤：将第一测距码发送到第一系统（407）的测距部分; 测试是否接收到关于第一测距码的响应消息（409）; 如果没有接收到响应消息，则将第二测距码发送到第二系统（415）的测距部分。 如果接收到响应消息，则执行其余的网络访问过程（419）。
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公开(公告)号：KR1020080044595A
公开(公告)日：2008-05-21
申请号：KR1020060113619
申请日：2006-11-17
Applicant: 삼성전자주식회사
IPC: H04B7/08
CPC classification number: H04B7/0413 , H04B7/0854 , H04L5/0023 , H04L5/0032 , H04L5/0035 , H04L5/0048 , H04L25/0204 , H04L25/0228 , H04L25/0242 , H04L27/2613 , H04L27/2647
Abstract: An apparatus and a method for canceling interference in a broadband wireless access system are provided to reduce operation complexity significantly by removing the necessity to estimate a channel of an interference signal, and improve reliability of MIMO(Multiple-Input Multiple-Output) detection by performing the MIMO detection by using an interference-cancelled receiving vector and an interference-cancelled channel matrix. A channel estimator(308-1) estimates a channel coefficient vector for each of plural terminals using the same resource. An interference canceller(310) computes a correlation matrix by performing autocorrelation of a signal where the channel coefficient vector of the terminal is subtracted from a receiving signal of each of specific tones present in the same resource. By using the correlation matrix, the interference canceller performs MMSE(Minimum Mean Square Error) based interference cancellation to compute a receiving vector and a channel matrix where the interference is cancelled. An MIMO detector(312) performs MIMO detection by using the receiving vector and the channel matrix in order to estimate a transmission symbol for each of the plural terminals.
Abstract translation: 提供一种用于消除宽带无线接入系统中的干扰的装置和方法，通过消除估计干扰信号的信道的必要性，显着降低运营复杂度，并通过执行MIMO提高MIMO（多输入多输出）检测的可靠性 通过使用干扰消除接收向量和干扰消除信道矩阵的MIMO检测。 信道估计器（308-1）使用相同的资源估计多个终端中的每一个的信道系数向量。 干扰消除器（310）通过执行从相同资源中存在的每个特定音调的接收信号中减去终端的信道系数向量的信号的自相关来计算相关矩阵。 通过使用相关矩阵，干扰消除器执行基于MMSE（Minimum Mean Square Error，最小均方误差）的干扰消除来计算接收向量和消除干扰的信道矩阵。 MIMO检测器（312）通过使用接收向量和信道矩阵来执行MIMO检测，以估计多个终端中的每一个的发送符号。
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