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    Signaling bit detection with adaptive threshold
    1.
    发明授权
    Signaling bit detection with adaptive threshold 有权
    具有自适应阈值的信令位检测

    公开(公告)号：US08290441B2

    公开(公告)日：2012-10-16

    申请号：US11019141

    申请日：2004-12-20

    Applicant: Nagabhushan Kurapati ,  Matthias Brehler

    Inventor： Nagabhushan Kurapati ,  Matthias Brehler

    IPC: H04B17/00

    CPC classification number: H04L25/0212 ,  H04L25/0224 ,  H04W68/00

    Abstract: For signaling detection using an adaptive threshold, the channel condition observed by a signaling bit (e.g., a paging indicator bit) is estimated (e.g., by a pilot strength estimate). A metric for the signaling bit is computed based on recovered symbols for the signaling bit and the estimated channel condition. An adaptive threshold is selected based on the estimated channel condition. A decision is derived for the signaling bit based on the metric, the adaptive threshold, and the estimated channel condition. Multiple threshold values may be derived for the adaptive threshold for multiple ranges of estimated channel condition, one threshold value for each range. A look-up table stores the threshold values and provides the proper adaptive threshold value for any given estimated channel condition.

    Abstract translation: 对于使用自适应阈值的信令检测，估计信令位（例如，寻呼指示符位）观察到的信道状况（例如，通过导频强度估计）。 基于用于信令位的恢复符号和估计的信道条件来计算信令位的度量。 基于估计的信道条件来选择自适应阈值。 基于度量，自适应阈值和估计的信道条件，导出用于信令比特的决定。 可以针对估计的信道条件的多个范围的自适应阈值导出多个阈值，每个范围的一个阈值。 查找表存储阈值，并为任何给定的估计信道条件提供适当的自适应阈值。

    Signaling bit detection with adaptive threshold
    2.
    发明申请
    Signaling bit detection with adaptive threshold 有权
    具有自适应阈值的信令位检测

    公开(公告)号：US20060135073A1

    公开(公告)日：2006-06-22

    申请号：US11019141

    申请日：2004-12-20

    Applicant: Nagabhushan Kurapati ,  Matthias Brehler

    Inventor： Nagabhushan Kurapati ,  Matthias Brehler

    IPC: H04Q7/20

    CPC classification number: H04L25/0212 ,  H04L25/0224 ,  H04W68/00

    Abstract: For signaling detection using an adaptive threshold, the channel condition obsereved by a signaling bit (e.g., a paging indicator bit) is estimated (e.g., by a pilot strength estimate). A metric for the signaling bit is computed based on recovered symbols for the signaling bit and the estimated channel condition. An adaptive threshold is selected based on the estimated channel condition. A decision is derived for the signaling bit based on the metric, the adaptive threshold, and the estimated channel condition. Multiple threshold values may be derived for the adaptive threshold for multiple ranges of estimated channel condition, one threshold value for each range. A look-up table stores the threshold values and provides the proper adaptive threshold value for any given estimated channel condition.

    Abstract translation: 对于使用自适应阈值的信令检测，估计信令位（例如，寻呼指示符位）所占据的信道条件（例如，通过导频强度估计）。 基于用于信令位的恢复符号和估计的信道条件来计算信令位的度量。 基于估计的信道条件来选择自适应阈值。 基于度量，自适应阈值和估计的信道条件，导出用于信令比特的决定。 可以针对估计的信道条件的多个范围的自适应阈值导出多个阈值，每个范围的一个阈值。 查找表存储阈值，并为任何给定的估计信道条件提供适当的自适应阈值。

    Methods and systems for multi-mode terminal scanning
    3.
    发明授权
    Methods and systems for multi-mode terminal scanning 有权
    多模式终端扫描的方法和系统

    公开(公告)号：US08559948B2

    公开(公告)日：2013-10-15

    申请号：US12211952

    申请日：2008-09-17

    Applicant: Tom Chin ,  Ayman Fawzy Naguib ,  Guangming Carl Shi ,  Matthias Brehler ,  Serguei A. Glazko

    Inventor： Tom Chin ,  Ayman Fawzy Naguib ,  Guangming Carl Shi ,  Matthias Brehler ,  Serguei A. Glazko

    IPC: H04W4/00

    CPC classification number: H04W48/16 ,  H04W88/06

    Abstract: Certain embodiments of the present disclosure provide a method for scanning for paging messages in a second radio access technology (RAT) network, such as a CDMA network, while connected to a first RAT network, such as a WiMAX network. For certain embodiments, an enhanced scanning request message may facilitate establishing a scanning cycle in the first RAT that aligns with a paging cycle of the second RAT.

    Abstract translation: 本公开的某些实施例提供了一种用于在诸如CDMA网络的第二无线电接入技术（RAT）网络中扫描寻呼消息的方法，同时连接到诸如WiMAX网络的第一RAT网络。 对于某些实施例，增强的扫描请求消息可以有助于建立与第二RAT的寻呼周期对准的第一RAT中的扫描周期。

    Methods and systems using FFT window tracking algorithm
    5.
    发明授权
    Methods and systems using FFT window tracking algorithm 失效
    方法和系统采用FFT窗口跟踪算法

    公开(公告)号：US08155254B2

    公开(公告)日：2012-04-10

    申请号：US12337632

    申请日：2008-12-18

    Applicant: Junqiang Li ,  Je Woo Kim ,  Matthias Brehler ,  Michael McCloud

    Inventor： Junqiang Li ,  Je Woo Kim ,  Matthias Brehler ,  Michael McCloud

    IPC: H03D1/04

    CPC classification number: H04L27/2657 ,  H04L27/2607 ,  H04L27/2665

    Abstract: Techniques for the adjustment of a position of Fast Fourier Transform (FFT) window are provided. The adjustment may be based on the condition that the length of channel impulse response is larger than the length of cyclic prefix. The technique may determine a position of the FFT window that attempts to maximize carrier-to-noise (C/N) ratio value measured at the receiver.

    Abstract translation: 提供了用于调整快速傅立叶变换（FFT）窗口位置的技术。 调整可以基于信道脉冲响应的长度大于循环前缀的长度的条件。 该技术可以确定尝试最大化在接收机处测量的载波噪声（C / N）比值的FFT窗口的位置。

    Methods and apparatus for searching a list of pilot signals
    6.
    发明申请
    Methods and apparatus for searching a list of pilot signals 失效
    用于搜索导频信号列表的方法和装置

    公开(公告)号：US20050232199A1

    公开(公告)日：2005-10-20

    申请号：US11097877

    申请日：2005-04-01

    Applicant: Jing Liu ,  Bijan Tuysserkani ,  Jon Anderson ,  Kurt Otte ,  Matthias Brehler

    Inventor： Jing Liu ,  Bijan Tuysserkani ,  Jon Anderson ,  Kurt Otte ,  Matthias Brehler

    IPC: H04B7/02 ,  H04Q7/00

    CPC classification number: H04B1/70754 ,  H04B2201/70701 ,  H04B2201/70702 ,  H04B2201/70707

    Abstract: Methods and apparatus for searching a list of pilot signals. A method is provided for searching a list of pilot signals in a communication network. The method includes defining a prio list that indicates an order in which the list of pilot signals will be searched, obtaining a search duration, and determining an indicator that identifies a portion of the prio list that can be searched within the search duration. The method also includes performing a search of the portion of the prio list, and updating the list of pilot signals based on the results of the search.

    Abstract translation: 用于搜索导频信号列表的方法和装置。 提供了一种用于搜索通信网络中的导频信号的列表的方法。 该方法包括：定义一个列表，其指示将搜索导频信号的列表的顺序，获得搜索持续时间，以及确定标识在搜索持续时间内可被搜索的一部分列表的指示符。 该方法还包括执行对该列表的部分的搜索，以及基于搜索的结果来更新导频信号的列表。

    Methods and systems for overhead reduction in a wireless communication network
    8.
    发明授权
    Methods and systems for overhead reduction in a wireless communication network 失效
    无线通信网络中开销降低的方法和系统

    公开(公告)号：US08576931B2

    公开(公告)日：2013-11-05

    申请号：US12486744

    申请日：2009-06-17

    Applicant: Serguei A. Glazko ,  Matthias Brehler ,  Je Woo Kim ,  Mahesh Makhijani

    Inventor： Serguei A. Glazko ,  Matthias Brehler ,  Je Woo Kim ,  Mahesh Makhijani

    IPC: H04L27/28

    CPC classification number: H04W72/1231 ,  H04L5/0007 ,  H04L5/0037 ,  H04L5/0053 ,  H04W72/1273

    Abstract: Methods and apparatus are provided for increasing throughput in a wireless communication system by reducing the amount of overhead transmitted to certain user terminals. Overhead due to control information may be reduced for these certain user terminals by selecting a low repetition factor. Overhead may be further reduced for these certain user terminals by selecting a modulation/coding scheme with a higher data rate for transmitting the control information. The selection may be based on channel conditions associated with the user terminals, such as signal-to-interference-plus-noise ratios (SINRs).

    Abstract translation: 提供了通过减少传送到某些用户终端的开销量来提高无线通信系统中的吞吐量的方法和装置。 通过选择低重复因子，可能会降低这些特定用户终端由于控制信息而导致的开销。 通过选择具有较高数据速率的调制/编码方案来传送控制信息，可以进一步减少这些特定用户终端的开销。 选择可以基于与用户终端相关联的信道条件，例如信号与干扰加噪声比（SINR）。

    TIME TRACKING FOR A COMMUNICATION SYSTEM UTILIZING A CYCLIC PREFIX
    10.
    发明申请
    TIME TRACKING FOR A COMMUNICATION SYSTEM UTILIZING A CYCLIC PREFIX 审中-公开
    使用循环前缀的通信系统的时间跟踪

    公开(公告)号：US20110158342A1

    公开(公告)日：2011-06-30

    申请号：US12825132

    申请日：2010-06-28

    Applicant: Shivratna G. Srinivasan ,  Michael L. McCloud ,  Matthias Brehler ,  Brian Clarke Banister

    Inventor： Shivratna G. Srinivasan ,  Michael L. McCloud ,  Matthias Brehler ,  Brian Clarke Banister

    IPC: H04B15/00

    CPC classification number: H04L27/2662 ,  H04L25/0212 ,  H04L27/2665

    Abstract: Techniques for performing time tracking in a communication system utilizing a cyclic prefix are described. In an aspect, a receiver may perform time tracking and determine an FFT window position based on a metric related to inter-symbol interference (ISI) and inter-carrier interference (ICI). The receiver may determine an early energy for signal paths earlier than the current FFT window position, determine a late energy for signal paths later than the current FFT window position, determine the metric based on the early and late energies, compute an update amount for the FFT window position based on the metric, and update the FFT window position based on the update amount with a time tracking loop (TTL). In yet another aspect, the receiver may compute the FFT window position based on a channel impulse response (CIR) estimate directly, without using a TTL.

    Abstract translation: 描述了在利用循环前缀的通信系统中执行时间跟踪的技术。 在一方面，接收机可以执行时间跟踪，并且基于与符号间干扰（ISI）和载波间干扰（ICI）相关的度量来确定FFT窗口位置。 接收机可以在比当前FFT窗口位置更早的时间确定信号路径的早期能量，确定晚于当前FFT窗口位置的信号路径的延迟能量，基于早期和晚期能量来确定度量，计算更新量 基于度量的FFT窗口位置，并使用时间跟踪循环（TTL）更新基于更新量的FFT窗口位置。 在另一方面，接收机可以直接地计算基于信道脉冲响应（CIR）估计的FFT窗口位置，而不使用TTL。

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