公开(公告)号：US06801565B1

公开(公告)日：2004-10-05

申请号：US09344898

申请日：1999-06-25

申请人： Gregory Edward Bottomley ,  Yi-Pin Eric Wang ,  Tony Ottosson

发明人： Gregory Edward Bottomley ,  Yi-Pin Eric Wang ,  Tony Ottosson

IPC分类号： H04B1707

CPC分类号： H04B1/712 ,  H04B1/709 ,  H04B1/7117

摘要： Information encoded in a spread spectrum signal transmitted in a communications medium is recovered. A composite signal including a spread spectrum signal is received from the communications medium, and correlated with a spreading sequence to generate time-offset correlations. Respective first and second groups of the correlations are combined, e.g., according to estimated channel coefficients, to produce respective first and second combined values. The first and second combined values are then combined in a manner that compensates for correlated impairment in the composite signal to generate an estimate information in the transmitted spread spectrum signal, e.g., using weighting factors generated from an estimated composite channel response and an estimated impairment correlation, or adaptively generated weighting factors. Related apparatus are also described.

摘要翻译： 在通信介质中发送的扩频信号中编码的信息被恢复。 从通信介质接收包括扩展频谱信号的复合信号，并与扩展序列相关以产生时间偏移相关。 各个相关的第一和第二组例如根据估计的信道系数被组合，以产生相应的第一和第二组合值。 然后，以补偿复合信号中的相关损害的方式组合第一和第二组合值，以在发射的扩频信号中产生估计信息，例如，使用从估计的复合信道响应和估计的损耗相关性产生的加权因子 ，或自适应产生的加权因子。 还描述了相关装置。

公开(公告)号：US06728203B2

公开(公告)日：2004-04-27

申请号：US09859535

申请日：2001-05-18

申请人： Yi-Pin Eric Wang

发明人： Yi-Pin Eric Wang

IPC分类号： H04J1100

CPC分类号： H04B1/7075 ,  H04B1/7087 ,  H04B7/0845 ,  H04B2201/70702 ,  H04L2027/0065

摘要： A system searches for a cell and determines a frequency error estimate in a communications network. The system generates a slot boundary candidate. The system identifies a scrambling code group using the slot boundary list, identifies a scrambling code from the scrambling code group, and determines a frequency error estimate using the identified scrambling code. The system also determines a detection metric, compares the detection metric to a predetermined threshold, and selects the frequency error estimate when the detection metric is greater than the predetermined threshold.

摘要翻译： 系统搜索小区并确定通信网络中的频率误差估计。 系统生成槽边界候选。 该系统使用时隙边界列表识别扰码组，从加密码组识别扰码，并使用所识别的扰码确定频率误差估计。 系统还确定检测度量，将检测度量与预定阈值进行比较，并且当检测度量大于预定阈值时选择频率误差估计。

公开(公告)号：US06480558B1

公开(公告)日：2002-11-12

申请号：US09271074

申请日：1999-03-17

申请人： Tony Ottosson ,  Yi-Pin Eric Wang

发明人： Tony Ottosson ,  Yi-Pin Eric Wang

IPC分类号： H04B110

CPC分类号： H04B1/7083 ,  H04B1/7107 ,  H04B2201/70702

摘要： A received communications signal is correlated with a common synchronization code to produce a synchronization detection signal. A component of the synchronization detection signal associated with a known synchronization signal is canceled from the synchronization detection signal to produce an interference-canceled synchronization detection signal. Timing of a synchronization signal is determined from the interference-canceled synchronization detection signal. According to one aspect, interference cancellation is achieved by generating a correlation of an estimated received known synchronization signal with the common synchronization code, canceling the correlation of the estimated received known synchronization signal with the common synchronization code from the synchronization detection signal to produce the interference-canceled synchronization detection signal. Timing of a synchronization signal may then be determined by accumulating the interference-canceled synchronization detection signal over a time interval, detecting a peak in the accumulated interference-canceled synchronization detection signal, and determining timing of a synchronization signal from the detected peak. According to another aspect, interference cancellation is achieved by accumulating the synchronization detection signal over a time interval, identifying a peak in the accumulated synchronization detection signal not associated with a known synchronization signal, and determining timing of a synchronization signal from the identified peak. Related terminal apparatus are also discussed.

摘要翻译： 接收到的通信信号与公共同步码相关，以产生同步检测信号。 与已知的同步信号相关联的同步检测信号的分量从同步检测信号中消除，以产生干扰消除的同步检测信号。 从干扰消除的同步检测信号确定同步信号的定时。 根据一个方面，通过产生估计的接收到的已知同步信号与公共同步码的相关性来消除干扰消除，从所述同步检测信号中消除估计接收的已知同步信号与公共同步码的相关性，以产生干扰 同步检测信号。 然后可以通过在一段时间间隔内累积干扰消除的同步检测信号来确定同步信号的定时，检测累积的干扰消除同步检测信号中的峰值，以及根据检测到的峰值确定同步信号的定时。 根据另一方面，通过在时间间隔内累积同步检测信号，识别与已知同步信号不相关的累积同步检测信号中的峰值，以及根据所识别的峰值确定同步信号的定时来实现干扰消除。 还讨论了相关终端装置。

公开(公告)号：US06480504B1

公开(公告)日：2002-11-12

申请号：US09144272

申请日：1998-08-31

申请人： Yi-Pin Eric Wang ,  Torgny Palenius ,  Paul Dent

发明人： Yi-Pin Eric Wang ,  Torgny Palenius ,  Paul Dent

IPC分类号： H04J1300

CPC分类号： H04W68/00 ,  H04W48/12 ,  H04W52/0216 ,  H04W52/0219 ,  H04W52/0245 ,  Y02D70/1222

摘要： Methods and systems for optimizing standby mode power performance in radiocommunication systems are described. Techniques are providing which permit a mobile station to read synchronization symbols, e.g., long code masked symbols, in transmitted in differently numbered timeslots while minimizing wake-up time in idle mode.

摘要翻译： 描述了在无线电通信系统中优化待机模式功率性能的方法和系统。 提供了允许移动台读取在不同编号的时隙中发送的同步符号（例如长码屏蔽符号）同时最小化空闲模式下的唤醒时间的技术。

公开(公告)号：US09130706B2

公开(公告)日：2015-09-08

申请号：US11138724

申请日：2005-05-26

申请人： Stephen J. Grant ,  Jung-fu Thomas Cheng ,  Karl J. Molnar ,  Yi-Pin Eric Wang ,  Rajaram Ramesh

发明人： Stephen J. Grant ,  Jung-fu Thomas Cheng ,  Karl J. Molnar ,  Yi-Pin Eric Wang ,  Rajaram Ramesh

IPC分类号： H04B7/216 ,  H04J9/00 ,  H04L1/00 ,  H04B7/06 ,  H04B17/00 ,  H04L1/20 ,  H04L1/06

CPC分类号： H04L1/0026 ,  H04B7/061 ,  H04B7/0678 ,  H04B7/0691 ,  H04B7/0697 ,  H04B17/309 ,  H04L1/0003 ,  H04L1/0009 ,  H04L1/0033 ,  H04L1/06 ,  H04L1/20 ,  H04L5/0057 ,  H04W24/10

摘要： A wireless communication receiver receiving a multiplexed signal comprising two or more signal streams calculates a received signal quality for the multiplexed signal as a function of stream-specific received signal qualities, determines one or more loss parameters indicative of variations in the stream-specific received signal qualities, and generates quality feedback based on such information. In turn, a transmitter controls the selection of one or more transmission parameters of the multiplexed signal based on the quality feedback, such that its transmit link adaptations account for the losses in received signal quality at the receiver arising from the variations in the stream-specific received signal qualities. The quality feedback may include calculated loss values, or parameter/penalties that permit loss calculation, and the method applies to both code multiplexing and spatial multiplexing.

摘要翻译： 接收包括两个或多个信号流的多路复用信号的无线通信接收机根据流专用接收信号质量计算多路复用信号的接收信号质量，确定一个或多个指示流特定接收信号变化的丢失参数 质量，并根据这些信息产生质量反馈。 反过来，发射机基于质量反馈来控制对多路复用信号的一个或多个传输参数的选择，使得其发射链路适应性考虑到接收机的接收信号质量中由于流特定的变化引起的损耗 收到信号质量。 质量反馈可以包括计算的损失值或允许损耗计算的参数/惩罚，并且该方法适用于码复用和空间复用两者。

公开(公告)号：US09042428B2

公开(公告)日：2015-05-26

申请号：US13463974

申请日：2012-05-04

申请人： Yi-Pin Eric Wang

发明人： Yi-Pin Eric Wang

IPC分类号： H04B1/00 ,  H04B1/7105 ,  H04B1/7107 ,  H04J11/00 ,  H04B7/04 ,  H04B7/08

CPC分类号： H04B1/71055 ,  H04B1/71072 ,  H04B1/71075 ,  H04B7/0413 ,  H04B7/0854 ,  H04J11/004

摘要： A system and method to more efficiently compute updated Frequency Domain (FD) Minimum Mean Squared Error (MMSE) equalization weights in a multi-stage Parallel Interference Cancellation (PIC) receiver after initial interference cancellation. The updated equalization weights (which are to be used during re-equalization) can be obtained using the old equalization weights already computed for initial interference cancellation. There is no need to invert an nR by nR matrix (where nR is the number of receive antennas) at each stage of the PIC receiver during each iteration of equalization and decoding operations. Rather, the matrix to be inverted to obtain updated equalization weights may be of the dimension n×n (where “n” equals the total number of transmission layers in a transmission scheme used in the wireless network). This significantly reduces complexity of determining updated equalization weights during FD MMSE equalization, thereby saving computational resources in a digital receiver performing such equalization.

摘要翻译： 在初始干扰消除之后，在多级并行干扰消除（PIC）接收机中更有效地计算更新的频域（FD）最小均方误差（MMSE）均衡权重的系统和方法。 可以使用已经为初始干扰消除计算的旧的均衡权重来获得更新的均衡权重（将在重新均衡期间使用）。 在均衡和解码操作的每次迭代期间，不需要在PIC接收器的每个阶段通过nR矩阵（其中nR是接收天线的数量）来反转nR。 相反，要反转以获得更新的均衡权重的矩阵可以是尺寸n×n（其中“n”等于在无线网络中使用的传输方案中的传输层的总数）。 这显着降低了在FD MMSE均衡期间确定更新的均衡权重的复杂性，从而在执行这种均衡的数字接收机中节省了计算资源。

公开(公告)号：US08958753B2

公开(公告)日：2015-02-17

申请号：US13451076

申请日：2012-04-19

申请人： Yi-Pin Eric Wang ,  Andres Reial ,  Edgar Ramos ,  Stefan Parkvall ,  Stephen Grant

发明人： Yi-Pin Eric Wang ,  Andres Reial ,  Edgar Ramos ,  Stefan Parkvall ,  Stephen Grant

IPC分类号： H04B1/00 ,  H04W72/00 ,  G01R31/08 ,  G06F11/00 ,  G08C15/00 ,  H04J1/16 ,  H04J3/14 ,  H04L1/00 ,  H04L12/26 ,  H04W4/00 ,  H03D3/24 ,  H04W72/12 ,  H04W72/08

CPC分类号： H04W72/1278 ,  H04B1/71075 ,  H04B1/712 ,  H04W72/082

摘要： In MU-MIMO scenarios, a target mobile terminal can be exposed to data streams intended for other mobile terminals. If the target mobile terminal is capable of interference cancellation, then a serving base station can provide the target mobile terminal with interference information so that the target mobile terminal can efficiently cancel interferences due to these interfering data streams. The interference information includes one or more configuration information, each of which characterizes a related interfering data stream. The serving base station provides the interference information over one or more radio resources that are exclusive allocated to the target mobile terminal or are allocated for common listening. The serving base station exchanges configuration information with neighboring base stations over inter-BS links. The inter-BS links use resources that are different from the radio resources used between the base stations and the mobile terminals.

摘要翻译： 在MU-MIMO场景中，目标移动终端可以暴露给旨在用于其他移动终端的数据流。 如果目标移动终端能够进行干扰消除，则服务基站可以向目标移动终端提供干扰信息，使得目标移动终端可以有效地消除由于这些干扰数据流引起的干扰。 干扰信息包括一个或多个配置信息，每个配置信息表征相关的干扰数据流。 服务基站通过专用于目标移动终端的一个或多个无线电资源提供干扰信息，或者被分配用于共同收听。 服务基站通过BS间链路与相邻基站交换配置信息。 BS间链路使用与基站和移动终端之间使用的无线电资源不同的资源。

公开(公告)号：US08892975B2

公开(公告)日：2014-11-18

申请号：US13443039

申请日：2012-04-10

申请人： Jung-fu Thomas Cheng ,  Bo Göransson ,  Stefan Parkvall ,  Yi-Pin Eric Wang

发明人： Jung-fu Thomas Cheng ,  Bo Göransson ,  Stefan Parkvall ,  Yi-Pin Eric Wang

IPC分类号： H04L1/18 ,  H03M13/00 ,  H04L1/00 ,  H04L1/16 ,  H04L1/12

CPC分类号： H04L1/1607 ,  H04L1/004 ,  H04L1/0073 ,  H04L1/1812 ,  H04L2001/125

摘要： Error protection based on a nonlinear code set may be used in a multiple input multiple output (MIMO) radio communications system. A decoder decodes received MIMO data streams and generates an automatic repeat request (ARQ) message for data units received for the MIMO data streams for each transmission time interval. An encoder codes the ARQ message using a code word from a nonlinear code set. At the data transmitter, which transmits one or more data units in transmission time intervals from two or more MIMO data streams, the ARQ message associated with the transmitted data units is decoded using a code word from the nonlinear code set.

摘要翻译： 可以在多输入多输出（MIMO）无线电通信系统中使用基于非线性码集的错误保护。 解码器解码所接收的MIMO数据流，并为每个传输时间间隔为MIMO数据流接收的数据单元生成自动重复请求（ARQ）消息。 编码器使用来自非线性码集的码字对ARQ消息进行编码。 在从两个或多个MIMO数据流以传输时间间隔发送一个或多个数据单元的数据发射机处，使用来自非线性码集的码字来解码与发送的数据单元相关联的ARQ消息。

公开(公告)号：US08774369B2

公开(公告)日：2014-07-08

申请号：US13658744

申请日：2012-10-23

申请人： Bo Xing ,  Yi-Pin Eric Wang

发明人： Bo Xing ,  Yi-Pin Eric Wang

IPC分类号： H04M1/24 ,  H04M3/08 ,  H04M3/22 ,  H04M1/64 ,  H04M11/00

CPC分类号： H04M3/436 ,  H04M3/4936 ,  H04M2203/2005 ,  H04M2203/2011 ,  H04M2203/4563 ,  H04M2203/556

摘要： A method implemented to provide voice calls in a network. The method comprises receiving a voice call initiation request at a caller agent, wherein the voice call initiation request is triggered by a caller initiating a voice call via a caller equipment, wherein the voice call is destined to a callee equipment communicatively coupled with the network to reach a caller, and wherein the caller agent and a callee agent interact with the caller equipment and the callee equipment respectively. The method further comprise sending a call connection message to the caller equipment, receiving an acknowledgment message from the caller equipment, and opening a voice channel between the caller and the caller agent without waiting for a callee agent response.

摘要翻译： 一种实现在网络中提供语音呼叫的方法。 所述方法包括在呼叫方代理处接收语音呼叫发起请求，其中所述语音呼叫发起请求由主叫方通过呼叫者设备发起语音呼叫触发，其中所述语音呼叫指向与所述网络通信耦合的被叫设备 到达呼叫者，并且其中呼叫方代理和被叫方代理分别与呼叫者设备和被叫设备进行交互。 该方法还包括向呼叫者设备发送呼叫连接消息，从呼叫者设备接收确认消息，以及在呼叫者和呼叫方代理之间打开语音信道，而不用等待被呼叫方代理响应。

公开(公告)号：US08743988B2

公开(公告)日：2014-06-03

申请号：US13194772

申请日：2011-07-29

申请人： Chester Park ,  Yi-Pin Eric Wang

发明人： Chester Park ,  Yi-Pin Eric Wang

IPC分类号： H04B7/04 ,  H04L1/20

CPC分类号： H04L1/0015 ,  H04B7/0473 ,  H04B17/336 ,  H04L1/20 ,  H04L25/03923 ,  H04L25/03929

摘要： Conventional mode adaptation does not account for the gain imbalance between channels for measurement and for data reception. Therefore, the precoder, which is selected based on the measurement channel, may not be the optimal precoder for the data reception channel. By maintaining relative SINR ordering between transmission modes, a receiver may select the transmission mode for a transmitter that maximizes the actual throughput even in the presence of inter-antenna gain increase or decrease.

摘要翻译： 常规模式适配不考虑用于测量和数据接收的通道之间的增益不平衡。 因此，基于测量信道选择的预编码器可能不是数据接收信道的最佳预编码器。 通过维持传输模式之间的相对SINR排序，接收机可以选择发射机的传输模式，即使在存在天线间增益增加或减小的情况下也能使实际吞吐量最大化。