公开(公告)号：US07532685B2

公开(公告)日：2009-05-12

申请号：US11094439

申请日：2005-03-31

申请人： Francis Dominique ,  Yi Hsuan

发明人： Francis Dominique ,  Yi Hsuan

IPC分类号： H03K9/00

CPC分类号： H04L1/20 ,  H04L7/0083 ,  H04W88/08

摘要： A method of tracking on-time errors may include producing first and second metrics from accumulated signal samples of a received data frame, and calculating a sum of, and a difference between, the first and second metrics. The calculated difference and sum values may be used to determine an estimated on-time error for the received data frame and a corrected timing error control value to be applied to the on-time error. The accuracy of the estimated on-time error may be evaluated based a signal quality metric to determine whether the corrected timing error control value is to be applied to the estimated on-time error or whether the timing adjustment for the on-time error is to be stopped.

摘要翻译： 跟踪准时错误的方法可以包括从接收到的数据帧的累积信号样本产生第一和第二度量，以及计算第一和第二度量的总和以及差值。 所计算的差值和和值可用于确定接收数据帧的估计接通时间误差和要应用于接通时间误差的校正定时误差控制值。 可以基于信号质量度量来估计估计的接通时间误差的精度，以确定校正的定时误差控制值是否应用于估计的接通时间误差，或者导通时间误差的定时调整是否为 被停止

公开(公告)号：US06680932B1

公开(公告)日：2004-01-20

申请号：US09523363

申请日：2000-03-10

申请人： Yi Hsuan ,  Peter Thomas Monsen

发明人： Yi Hsuan ,  Peter Thomas Monsen

IPC分类号： H04J306

CPC分类号： H04L7/042 ,  H04L7/10 ,  H04L2027/0034

摘要： A method for synchronizing the time and frequency of an incoming packet of transmitted information with a receiver in a wireless communication system includes a synchronization method which may reduce the adverse effects of delay spread introduced by a bad channel. The method includes assigning a plurality of samples in a received synchronization segment of an incoming packet to corresponding bins, determining a number of phase test failures in each bin, and selecting the bin having the fewest number of phase test failures and the fewest number of small samples for synchronizing the time of the incoming packet with the receiver. Additionally, the method calculates the phase drift for the selected bin so that the frequency of the incoming packet is synchronized with that of the receiver.

摘要翻译： 一种用于在无线通信系统中将发送信息的输入分组的时间和频率与接收机同步的方法包括可以减少由坏信道引入的延迟扩展的不利影响的同步方法。 该方法包括将输入分组的接收到的同步段中的多个样本分配给相应的分组，确定每个分组中的相位测试失败次数，并且选择具有最少相位测试失败次数的分组和最小数目的小 用于使输入分组与接收机的时间同步的样本。 此外，该方法计算所选择的分组的相位漂移，使得输入分组的频率与接收机的频率同步。

公开(公告)号：US20120140713A1

公开(公告)日：2012-06-07

申请号：US12958235

申请日：2010-12-01

申请人： Huaning Niu ,  Yi Hsuan

发明人： Huaning Niu ,  Yi Hsuan

IPC分类号： H04W4/00 ,  H04B1/10

CPC分类号： H04W24/00 ,  H04B1/1027 ,  H04B7/024 ,  H04B17/26 ,  H04B17/309 ,  H04B17/318 ,  H04B17/345 ,  H04L1/20 ,  H04L5/0007 ,  H04W24/10

摘要： A mobile station (MS) to determine signal quality values is disclosed. The MS may include a transmitter and a receiver and the receiver may determine a signal power value, a noise power value, and an interference power value of a signal received from antennas. The receiver may determine the signal power value and the interference value using a second preamble included in a super-frame of the signal, wherein the second preamble includes cell information. The receiver may determine a noise power value of the signal received from the plurality of antennas using unoccupied orthogonal frequency division multiple access (OFDMA) tones of a first preamble included in the super-frame of the signal, wherein the first preamble includes carrier information. The receiver may also use the fractional frequency reuse (FFR) and MIMO features to determine signal quality values using the signal power value, the noise power value, and the interference power value.

摘要翻译： 公开了一种用于确定信号质量值的移动台（MS）。 MS可以包括发射机和接收机，并且接收机可以确定从天线接收的信号的信号功率值，噪声功率值和干扰功率值。 接收机可以使用包括在信号的超帧中的第二前导码来确定信号功率值和干扰值，其中第二前同步码包括小区信息。 接收机可以使用包括在信号的超帧中的第一前导码的未占用的正交频分多址（OFDMA）音调来确定从多个天线接收的信号的噪声功率值，其中第一前同步码包括载波信息。 接收机还可以使用分数频率复用（FFR）和MIMO特征来使用信号功率值，噪声功率值和干扰功率值来确定信号质量值。

公开(公告)号：US08139535B2

公开(公告)日：2012-03-20

申请号：US12381610

申请日：2009-03-13

申请人： Yi Hsuan ,  Ping Wang

发明人： Yi Hsuan ,  Ping Wang

IPC分类号： H04W4/00

CPC分类号： H04W24/02 ,  H04W84/045

摘要： Techniques for use in a blind detection process of information elements. Channels can be allocated into groups. For each group, resource blocks of each channel can be further divided into subspaces. A base station may communicate a number of channels in a group, a number of subspaces allocated to a group of channels, and a bit shift value to all mobile stations via non-specific user channels to a mobile station. The mobile station uses a blind detection scheme and the number of channels allocated per group, a number of sub-spaces per group of channels, and a bit shift value to locate an information element assigned to the mobile station. A number of blind detection trials may be capped to a sum of a number of channels for all allocated groups.

摘要翻译： 在信息元素的盲检测过程中使用的技术。 频道可以分组。 对于每个组，每个通道的资源块可以进一步分为子空间。 基站可以将组中的多个信道，分配给一组信道的子空间数量，以及通过非特定用户信道向移动台向所有移动站传送比特移位值。 移动站使用盲检测方案，每组分配的信道数量，每组信道的子空间数，以及位移值，以定位分配给移动站的信息元素。 盲目检测试验可能会被限制为所有分配组的多个通道的总和。

公开(公告)号：US20060269024A1

公开(公告)日：2006-11-30

申请号：US11138362

申请日：2005-05-27

申请人： Francis Dominique ,  Yi Hsuan ,  Hongwei Kong

发明人： Francis Dominique ,  Yi Hsuan ,  Hongwei Kong

IPC分类号： H04B1/10

CPC分类号： H04B1/7115 ,  H04B1/7117 ,  H04B2201/70701

摘要： A method may include determining whether to use a candidate path in acquiring a signal based on a path energy value at the candidate path and a path energy detection threshold. The path energy detection threshold may be less than a preamble detection threshold, and the preamble detection threshold may be used in detecting whether a candidate path carries a preamble.

摘要翻译： 方法可以包括基于候选路径上的路径能量值和路径能量检测阈值来确定是否使用候选路径获取信号。 路径能量检测阈值可以小于前导码检测阈值，并且前导码检测阈值可以用于检测候选路径是否携带前导码。

公开(公告)号：US20060222130A1

公开(公告)日：2006-10-05

申请号：US11094439

申请日：2005-03-31

申请人： Francis Dominique ,  Yi Hsuan

发明人： Francis Dominique ,  Yi Hsuan

IPC分类号： H04L7/00

CPC分类号： H04L1/20 ,  H04L7/0083 ,  H04W88/08

摘要： In a method of tracking on-time errors in a wireless communication system, first and second metrics may be produced from accumulated signal samples of a received data frame, and a sum of, and a difference between, the first and second metrics may be calculated. The calculated difference and sum values may be used to determine an estimated on-time error for the received data frame and a corrected timing error control value to be applied to the on-time error. The accuracy of the estimated on-time error may be evaluated based a signal quality metric to determine whether the corrected timing error control value is to be applied to the estimated on-time error or whether the timing adjustment for the on-time error is to be stopped.

摘要翻译： 在一种跟踪无线通信系统中的准时误差的方法中，可以从接收的数据帧的累积信号样本产生第一和第二度量，并且可以计算第一和第二度量的和之和以及第一和第二度量之间的差值 。 所计算的差值和和值可用于确定接收数据帧的估计接通时间误差和要应用于接通时间误差的校正定时误差控制值。 可以基于信号质量度量来估计估计的接通时间误差的精度，以确定校正的定时误差控制值是否应用于估计的接通时间误差，或者导通时间误差的定时调整是否为 被停止

公开(公告)号：US10178605B2

公开(公告)日：2019-01-08

申请号：US13996624

申请日：2011-10-01

申请人： Xiaogang Chen ,  Yuan Zhu ,  Yi Hsuan ,  Huaning Niu ,  Qinghua Li ,  Jong-Kae Fwu

发明人： Xiaogang Chen ,  Yuan Zhu ,  Yi Hsuan ,  Huaning Niu ,  Qinghua Li ,  Jong-Kae Fwu

IPC分类号： H04B7/04 ,  H04W72/04 ,  H04W48/10 ,  H04B7/0456 ,  H04B7/06 ,  H04L5/00 ,  H04L12/26 ,  H04L12/721 ,  H04L29/06 ,  H04W24/00 ,  H04W24/02 ,  H04W24/10 ,  H04W28/08 ,  H04W48/12 ,  H04W52/02 ,  H04W52/14 ,  H04W52/18 ,  H04W4/70 ,  H04W72/00 ,  H04W88/02 ,  H04W88/08 ,  H04W92/20 ,  H04W28/04

摘要： Embodiments of an eNB and method of transmitting PDCCHs are generally described herein. In some embodiments, the eNB may be configured to transmit PDCCHs that are based on a UE-specific reference signal (i.e., a UE-RS). In these embodiments, the UEs may be able to demodulate their PDCCH using a demodulation reference signal (DM-RS) that is specific to the UE (e.g., instead of a common reference signal). The PDCCHs disclosed herein may be suitable the Uu interface of an LTE-A system.

公开(公告)号：US20120281552A1

公开(公告)日：2012-11-08

申请号：US13099059

申请日：2011-05-02

申请人： Huaning Niu ,  Yi Hsuan ,  Ayelet Shahar Doron

发明人： Huaning Niu ,  Yi Hsuan ,  Ayelet Shahar Doron

IPC分类号： H04W24/00 ,  H04B17/00

CPC分类号： H04L1/0031 ,  H04B7/0417 ,  H04B7/063 ,  H04B7/0632 ,  H04B7/0639 ,  H04B17/336 ,  H04L1/0026 ,  H04L25/0202

摘要： A method for performing measurement by a radio apparatus is presented. In one embodiment, the method includes determining raw measurements (e.g., a channel estimation and a noise variance estimation) of a subband and determining a rank indicator (RI) without requiring a precoding matrix indicator (PMI) search. The method includes calculating, based at least on the raw measurements, a mean instantaneous capacity (MIC) for the subband and determining a channel quality indicator (CQI) and a PMI based at least on the MIC. In one embodiment, the method uses subband-based measurements for performing feedback/measurement.

摘要翻译： 提出了一种通过无线电设备进行测量的方法。 在一个实施例中，该方法包括确定子带的原始测量（例如，信道估计和噪声方差估计）并确定秩指示符（RI），而不需要预编码矩阵指示符（PMI）搜索。 该方法至少基于原始测量来计算子带的平均瞬时容量（MIC）并且至少基于MIC确定信道质量指示符（CQI）和PMI。 在一个实施例中，该方法使用基于子带的测量来执行反馈/测量。

公开(公告)号：US07154872B2

公开(公告)日：2006-12-26

申请号：US10132454

申请日：2002-04-26

申请人： Yi Hsuan

发明人： Yi Hsuan

IPC分类号： H04B7/216

CPC分类号： H04B1/7085 ,  H04B1/7117 ,  H04L7/0054

摘要： In the method, a detector retrieves certain signal samples from a data frame that are accumulated in a buffer of a base station receiver. The detector generates a first metric representing a first signal sample and a second metric representing a second signal sample, and calculates a sum of the first and second metrics and a difference between the first and second metrics. A calculator uses the sum to calculate at least one threshold value, and a comparator compares the difference to the calculated threshold value to determine an on-time error for the frame. Based on the determined on-time error, an adjuster adjusts timing for the on-time error, and feeds back an on-time error correction to the buffer for subsequently received data frames.

公开(公告)号：US06704377B1

公开(公告)日：2004-03-09

申请号：US09522706

申请日：2000-03-10

申请人： Yi Hsuan

发明人： Yi Hsuan

IPC分类号： H04L2508

CPC分类号： H04L27/2332 ,  H04L2027/003 ,  H04L2027/0055 ,  H04L2027/0081

摘要： The present invention provides a receiver for correcting frequency errors in a receiver of a coherently demodulated communication system, whereby two simultaneous counts are performed for a plurality of symbol comprising an incoming packet of information. In particular, a first count is performed where a counter increases or decreases based on the comparison of symbol phases from outputs of two components of the receiver. Simultaneously, a second counter increments sequentially for each symbol processed. A frequency increment or correction is applied when the first counter reaches a threshold, resetting the first and second counters for subsequent symbols. The receiver may reduce frequency offset estimation errors which degrade channel performance, as compared to algorithms currently utilized to correct frequency errors in wireless communications networks and/or systems. Moreover, a significant improvement in packet error rate may be attainable in accordance with the aforementioned receiver.

摘要翻译： 本发明提供了一种用于校正相干解调通信系统的接收机中的频率误差的接收机，由此对包括输入的信息分组的多个符号执行两个同时计数。 特别地，基于来自接收机的两个部件的输出的符号相位的比较，执行计数器增加或减少的第一计数。 同时，第二计数器对于处理的每个符号依次递增。 当第一计数器达到阈值时，应用频率增量或校正，为后续符号复位第一和第二计数器。 与当前用于校正无线通信网络和/或系统中的频率误差的算法相比，接收机可以减少频率性能下降的频偏估计误差。 此外，根据上述接收机，可以获得分组错误率的显着改善。