公开(公告)号：US08839079B2

公开(公告)日：2014-09-16

申请号：US13589651

申请日：2012-08-20

申请人： Jinghu Chen ,  Wanlun Zhao ,  Michael Mingxi Fan ,  Fuyun Ling ,  Peter John Black ,  Krishna Kiran Mukkavilli ,  Weihong Jing ,  Jia Tang

发明人： Jinghu Chen ,  Wanlun Zhao ,  Michael Mingxi Fan ,  Fuyun Ling ,  Peter John Black ,  Krishna Kiran Mukkavilli ,  Weihong Jing ,  Jia Tang

IPC分类号： H03M13/00 ,  H04L1/00

CPC分类号： H04L1/0051 ,  H04L1/0053 ,  H04L1/0066 ,  H04L1/20

摘要： The present disclosure describes methods and apparatuses for improved transport block decoding in devices capable of wireless communication, which may include user equipment and network entities. For example, the present disclosure presents methods and apparatuses for decoding a code block from a plurality of code blocks corresponding to a transport block, obtaining a reliability indicator that identifies a reliability of the decoding of the code block, comparing the reliability indicator to a reliability threshold, and determining whether to decode a subsequent code block from the plurality of code blocks based on the comparing. Furthermore, these methods and apparatuses may include determining not to decode at least one subsequent code block of the transport block where the comparing indicates that the reliability indicator is less than the reliability threshold. As such, device power is not unnecessarily consumed by decoding likely superfluous code blocks.

摘要翻译： 本公开描述了用于在能够进行无线通信的设备中改进传输块解码的方法和装置，其可以包括用户设备和网络实体。 例如，本公开提供了用于从对应于传输块的多个代码块中解码代码块的方法和装置，获得识别代码块的解码的可靠性的可靠性指示符，将可靠性指示符与可靠性进行比较 阈值，并且基于所述比较来确定是否从所述多个代码块解码后续代码块。 此外，这些方法和装置可以包括确定不解码传输块的至少一个后续码块，其中比较指示可靠性指示符小于可靠性阈值。 因此，通过解码可能的多余代码块，不会不必要地消耗器件功率。

公开(公告)号：US07724849B2

公开(公告)日：2010-05-25

申请号：US11516910

申请日：2006-09-06

申请人： Fuyun Ling ,  Krishna Kiran Mukkavilli ,  Gordon Kent Walker

发明人： Fuyun Ling ,  Krishna Kiran Mukkavilli ,  Gordon Kent Walker

IPC分类号： H03D1/04

CPC分类号： H04L1/20 ,  H04L27/2602 ,  H04L27/2647

摘要： Methods and apparatus for noise estimation in a communication system. In an aspect, a method for noise and interference estimation is provided. The method includes identifying one or more unmodulated subcarriers in a received waveform, processing the one or more unmodulated subcarriers to produce a demodulated output, and determining a noise variance based on the demodulated output. In another aspect, an apparatus for providing a noise and interference estimation is provided. The apparatus includes selection logic configured to identify one or more unmodulated subcarriers in a received waveform, a processor configured to demodulate the one or more unmodulated subcarriers to produce a demodulated output, and variance determination logic configured to determine a noise variance based on the demodulated output.

摘要翻译： 通信系统中噪声估计的方法和装置。 在一方面，提供了一种用于噪声和干扰估计的方法。 该方法包括识别接收波形中的一个或多个未调制副载波，处理一个或多个未调制副载波以产生解调输出，以及基于解调输出确定噪声方差。 另一方面，提供了一种用于提供噪声和干扰估计的装置。 所述设备包括被配置为识别接收波形中的一个或多个未调制子载波的选择逻辑，被配置为对所述一个或多个未调制子载波进行解调以产生解调输出的处理器，以及配置为基于解调输出来确定噪声方差的方差确定逻辑 。

公开(公告)号：US08981996B2

公开(公告)日：2015-03-17

申请号：US11327535

申请日：2006-01-05

申请人： Fuyun Ling ,  Gordon Kent Walker ,  Krishna Kiran Mukkavilli

发明人： Fuyun Ling ,  Gordon Kent Walker ,  Krishna Kiran Mukkavilli

IPC分类号： G01S5/02 ,  G01S5/10 ,  G01S5/14

CPC分类号： G01S5/021 ,  G01S5/0226 ,  G01S5/10 ,  G01S5/14

摘要： Systems and methods are provided for determining position location information in a wireless network. In one embodiment, timing offset information is communicated between multiple transmitters and one or more receivers. Such information enables accurate position or location determinations to be made that account for timing differences throughout the network. In another embodiment, transmitter phase adjustments are made that advance or delay transmissions from the transmitters to account for potential timing differences at receivers. In yet another embodiment, combinations of timing offset communications and/or transmitter phase adjustments can be employed in the wireless network to facilitate position location determinations.

摘要翻译： 提供了用于确定无线网络中的位置信息的系统和方法。 在一个实施例中，在多个发射机和一个或多个接收机之间传送定时偏移信息。 这样的信息使得可以进行精确的位置或位置确定，从而考虑整个网络的时序差异。 在另一个实施例中，进行发射机相位调整，其推进或延迟来自发射机的传输以考虑接收机处的潜在时序差异。 在另一个实施例中，可以在无线网络中采用定时偏移通信和/或发射机相位调整的组合以便于位置定位确定。

公开(公告)号：US20070153924A1

公开(公告)日：2007-07-05

申请号：US11516910

申请日：2006-09-06

申请人： Fuyun Ling ,  Krishna Kiran Mukkavilli ,  Gordon Kent Walker

发明人： Fuyun Ling ,  Krishna Kiran Mukkavilli ,  Gordon Kent Walker

IPC分类号： H04K1/10

CPC分类号： H04L1/20 ,  H04L27/2602 ,  H04L27/2647

摘要： Methods and apparatus for noise estimation in a communication system. In an aspect, a method for noise and interference estimation is provided. The method includes identifying one or more unmodulated subcarriers in a received waveform, processing the one or more unmodulated subcarriers to produce a demodulated output, and determining a noise variance based on the demodulated output. In another aspect, an apparatus for providing a noise and interference estimation is provided. The apparatus includes selection logic configured to identify one or more unmodulated subcarriers in a received waveform, a processor configured to demodulate the one or more unmodulated subcarriers to produce a demodulated output, and variance determination logic configured to determine a noise variance based on the demodulated output.

摘要翻译： 通信系统中噪声估计的方法和装置。 在一方面，提供了一种用于噪声和干扰估计的方法。 该方法包括识别接收波形中的一个或多个未调制副载波，处理一个或多个未调制副载波以产生解调输出，以及基于解调输出确定噪声方差。 另一方面，提供了一种用于提供噪声和干扰估计的装置。 所述设备包括被配置为识别接收波形中的一个或多个未调制子载波的选择逻辑，被配置为对所述一个或多个未调制子载波进行解调以产生解调输出的处理器，以及配置为基于解调输出来确定噪声方差的方差确定逻辑 。

公开(公告)号：US09354297B2

公开(公告)日：2016-05-31

申请号：US11326868

申请日：2006-01-05

申请人： Fuyun Ling ,  Gordon Kent Walker ,  Krishna Kiran Mukkavilli

发明人： Fuyun Ling ,  Gordon Kent Walker ,  Krishna Kiran Mukkavilli

IPC分类号： G01S5/14 ,  G01S5/02 ,  H04W64/00 ,  G01S1/02

CPC分类号： G01S5/021 ,  G01S1/024 ,  G01S5/0226 ,  G01S5/14 ,  H04W64/00

摘要： Systems and methods are provided for determining position location information in a wireless network. In one embodiment, timing offset information is communicated between multiple transmitters and one or more receivers. Such information enables accurate position or location determinations to be made that account for timing differences throughout the network. In another embodiment, transmitter phase adjustments are made that advance or delay transmissions from the transmitters to account for potential timing differences at receivers. In yet another embodiment, combinations of timing offset communications and/or transmitter phase adjustments can be employed in the wireless network to facilitate position location determinations.

摘要翻译： 提供了用于确定无线网络中的位置信息的系统和方法。 在一个实施例中，在多个发射机和一个或多个接收机之间传送定时偏移信息。 这样的信息使得可以进行精确的位置或位置确定，从而考虑整个网络的时序差异。 在另一个实施例中，进行发射机相位调整，其推进或延迟来自发射机的传输以考虑接收机处的潜在时序差异。 在另一个实施例中，可以在无线网络中采用定时偏移通信和/或发射机相位调整的组合以便于位置定位确定。

公开(公告)号：US20140053049A1

公开(公告)日：2014-02-20

申请号：US13589651

申请日：2012-08-20

申请人： Jinghu CHEN ,  Wanlun Zhao ,  Michael Mingxi Fan ,  Fuyun Ling ,  Peter John Black ,  Krishna Kiran Mukkavilli ,  Weihong Jing ,  Jia Tang

发明人： Jinghu CHEN ,  Wanlun Zhao ,  Michael Mingxi Fan ,  Fuyun Ling ,  Peter John Black ,  Krishna Kiran Mukkavilli ,  Weihong Jing ,  Jia Tang

IPC分类号： H03M13/09 ,  G06F11/10

CPC分类号： H04L1/0051 ,  H04L1/0053 ,  H04L1/0066 ,  H04L1/20

摘要： The present disclosure describes methods and apparatuses for improved transport block decoding in devices capable of wireless communication, which may include user equipment and network entities. For example, the present disclosure presents methods and apparatuses for decoding a code block from a plurality of code blocks corresponding to a transport block, obtaining a reliability indicator that identifies a reliability of the decoding of the code block, comparing the reliability indicator to a reliability threshold, and determining whether to decode a subsequent code block from the plurality of code blocks based on the comparing. Furthermore, these methods and apparatuses may include determining not to decode at least one subsequent code block of the transport block where the comparing indicates that the reliability indicator is less than the reliability threshold. As such, device power is not unnecessarily consumed by decoding likely superfluous code blocks.

摘要翻译： 本公开描述了用于在能够进行无线通信的设备中改进传输块解码的方法和装置，其可以包括用户设备和网络实体。 例如，本公开提供了用于从对应于传输块的多个代码块中解码代码块的方法和装置，获得识别代码块的解码的可靠性的可靠性指示符，将可靠性指示符与可靠性进行比较 阈值，并且基于所述比较来确定是否从所述多个代码块解码后续代码块。 此外，这些方法和装置可以包括确定不解码传输块的至少一个后续码块，其中比较指示可靠性指示符小于可靠性阈值。 因此，通过解码可能的多余代码块，不会不必要地消耗器件功率。

公开(公告)号：US08489124B2

公开(公告)日：2013-07-16

申请号：US12338901

申请日：2008-12-18

申请人： Krishna Kiran Mukkavilli ,  Fuyun Ling ,  Gordon Kent Walker ,  Murali Ramaswamy Chari

发明人： Krishna Kiran Mukkavilli ,  Fuyun Ling ,  Gordon Kent Walker ,  Murali Ramaswamy Chari

IPC分类号： H04W24/00 ,  H04W4/00

CPC分类号： G01S5/0205 ,  H04L5/0053 ,  H04W24/00 ,  H04W64/00

摘要： Methods and apparatus for position location in a wireless network. In an aspect, a method is provided that includes determining whether a symbol to be transmitted is an active symbol, wherein the symbol comprises a plurality of subcarriers, and encoding identification information on a first portion of subcarriers if it is determined that the symbol is the active symbol. The method also includes encoding idle information on a second portion of subcarriers if it is determined that the symbol in not the active symbol. In an aspect, an apparatus includes detector logic configured to decode a plurality of symbols to determine identification information that identifies a plurality of transmitters, and to determine a plurality of channel estimate associated with the plurality of transmitters. The apparatus also includes position determination logic configured to calculate a device position based on the plurality of transmitters and the plurality of channel estimates.

公开(公告)号：US20070153743A1

公开(公告)日：2007-07-05

申请号：US11517119

申请日：2006-09-06

申请人： Krishna Kiran Mukkavilli ,  Fuyun Ling ,  Gordon Kent Walker ,  Murali Ramaswamy Chari

发明人： Krishna Kiran Mukkavilli ,  Fuyun Ling ,  Gordon Kent Walker ,  Murali Ramaswamy Chari

IPC分类号： H04Q7/00

CPC分类号： G01S5/0205 ,  H04L5/0053 ,  H04W24/00 ,  H04W64/00

摘要： Methods and apparatus for position location in a wireless network. In an aspect, a method is provided that includes determining whether a symbol to be transmitted is an active symbol, wherein the symbol comprises a plurality of subcarriers, and encoding identification information on a first portion of subcarriers if it is determined that the symbol is the active symbol. The method also includes encoding idle information on a second portion of subcarriers if it is determined that the symbol in not the active symbol. In an aspect, an apparatus includes detector logic configured to decode a plurality of symbols to determine identification information that identifies a plurality of transmitters, and to determine a plurality of channel estimate associated with the plurality of transmitters. The apparatus also includes position determination logic configured to calculate a device position based on the plurality of transmitters and the plurality of channel estimates.

摘要翻译： 无线网络中位置定位的方法和装置。 一方面，提供了一种方法，其包括确定要发送的符号是否是活动符号，其中，所述符号包括多个子载波，并且如果确定所述符号是所述符号是所述符号，则对所述子载波的第一部分编码识别信息 活动符号 如果确定不在活动符号中的符号，则该方法还包括对子载波的第二部分上的空闲信息进行编码。 一方面，一种装置包括检测器逻辑，其被配置为对多个符号进行解码以确定标识多个发射机的识别信息，并且确定与多个发射机相关联的多个信道估计。 该装置还包括位置确定逻辑，其被配置为基于多个发射机和多个信道估计来计算设备位置。

公开(公告)号：US07746963B2

公开(公告)日：2010-06-29

申请号：US11557921

申请日：2006-11-08

申请人： Seong Taek Chung ,  Krishna Kiran Mukkavilli ,  Vinay Murthy ,  Tao Tian

发明人： Seong Taek Chung ,  Krishna Kiran Mukkavilli ,  Vinay Murthy ,  Tao Tian

IPC分类号： H04L27/00

CPC分类号： H04L27/2657 ,  H04L27/2675

摘要： Methods and apparatus for frequency tracking of a received signal. In an aspect, a method is provided wherein the received signal comprises one or more symbols having a periodic structure. The method comprises receiving a plurality of samples of a selected symbol that comprises pilot signals scrambled with data and determining a window size and a periodicity factor. The method also comprises accumulating a correlation between samples in a first window and samples in a second window to produce an accumulated correlation value, wherein the first and second windows have a size and a separation based on the window size and the periodicity factor, respectively, and deriving a frequency error estimate based on the accumulated correlation value.

摘要翻译： 接收信号频率跟踪的方法和装置。 在一方面，提供了一种方法，其中接收的信号包括具有周期性结构的一个或多个符号。 该方法包括：接收包含由数据加扰的导频信号和确定窗口大小和周期因子的所选符号的多个样本。 该方法还包括在第一窗口中累积样本之间的相关性并在第二窗口中采样以产生累加的相关值，其中第一和第二窗口分别具有基于窗口大小和周期性因子的大小和间隔， 以及基于所累积的相关值导出频率误差估计。

公开(公告)号：US08265214B2

公开(公告)日：2012-09-11

申请号：US12324818

申请日：2008-11-26

申请人： Bojan Vrcelj ,  Krishna Kiran Mukkavilli

发明人： Bojan Vrcelj ,  Krishna Kiran Mukkavilli

IPC分类号： H04L7/00

CPC分类号： H04L25/0212 ,  H04L27/2662 ,  H04L27/2665

摘要： An adaptive timing synchronization process dynamically adapts timing synchronization parameters for both wide and local area channels based on channel estimates. Timing synchronization parameters are dynamically adapted according to C/I estimates calculated from WID/LID energies. The timing synchronization algorithm 102 takes as the primary input, the current channel estimate 110 and produces an output comprising a correction to the current Fast Fourier Transform (FFT) sampling window position delta T (or offset) for locating the start of data within a current symbol 108. After dynamic parameter adjustment of noise filtering thresholds 104 and weak channel tap sensitivities 106 based on a calculated C/I from the channel estimate, a timing synchronization algorithm 102 locates the beginning of each continuous symbol by finding the boundary between the preamble, or cyclic prefix, and the useful data portions interlaced with pilots for channel information defining the start of a symbol 108.

摘要翻译： 基于信道估计，自适应定时同步过程动态地适应广域和局域信道的定时同步参数。 定时同步参数根据从WID / LID能量计算的C / I估计动态调整。 定时同步算法102将当前信道估计110作为主要输入，并产生包括对当前快速傅立叶变换（FFT）采样窗位置增量T（或偏移）的校正的输出，用于定位当前数据的开始 基于来自信道估计的计算出的C / I，在噪声滤波阈值104和弱信道抽头灵敏度106的动态参数调整之后，定时同步算法102通过找到前导码之间的边界来定位每个连续符号的开始， 或循环前缀，并且有用数据部分与用于定义符号108的开始的信道信息的导频隔行扫描。