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    SOUNDING CHANNEL BASED FEEDBACK IN A WIRELESS COMMUNICATION SYSTEM
    31.
    发明申请
    SOUNDING CHANNEL BASED FEEDBACK IN A WIRELESS COMMUNICATION SYSTEM 审中-公开
    无线通信系统中的基于通道的反馈

    公开(公告)号：US20090274226A1

    公开(公告)日：2009-11-05

    申请号：US12420092

    申请日：2009-04-08

    申请人： Bishwarup Mondal ,  Amitabha Ghosh ,  Fan Wang

    发明人： Bishwarup Mondal ,  Amitabha Ghosh ,  Fan Wang

    IPC分类号： H04L27/28 ,  H04B1/00

    CPC分类号： H04L5/0023 ,  H04L5/0048 ,  H04L25/0226 ,  H04L25/0228 ,  H04L25/03343 ,  H04L27/2613 ,  H04L2025/03808

    摘要： An apparatus and method for providing sounding channel based feedback in an OFDM communication system includes a first step (400) of defining a sounding channel spread out over multiple OFDM symbols within a frame. A next step (402) includes conveying a message to a subscriber station including information about the sounding channel. A next step (404) includes requesting a sounding waveform from the subscriber station. A next step (408) includes sending the sounding waveform from the subscriber station over the multiple OFDM symbols. A next step (410) includes sending a downlink transmission weighted in response to the sounding waveform.

    摘要翻译： 一种用于在OFDM通信系统中提供基于探测信道的反馈的装置和方法包括：第一步骤（400），其定义在帧内的多个OFDM符号上扩展的探测信道。 下一步骤（402）包括将消息传送到订户站，包括关于探测信道的信息。 下一步骤（404）包括从用户站请求探测波形。 下一步骤（408）包括通过多个OFDM符号从用户站发送探测波形。 下一步骤（410）包括响应于探测波形发送加权的下行链路传输。

    PDSCH RATE MATCHING AROUND SSB FOR NR UNLICENSED SPECTRUM OPERATION
    34.
    发明申请
    PDSCH RATE MATCHING AROUND SSB FOR NR UNLICENSED SPECTRUM OPERATION 有权

    公开(公告)号：US20210136800A1

    公开(公告)日：2021-05-06

    申请号：US17145639

    申请日：2021-01-11

    申请人： Yingyang Li ,  Gang Xiong ,  Bishwarup Mondal ,  Dae Won Lee

    发明人： Yingyang Li ,  Gang Xiong ,  Bishwarup Mondal ,  Dae Won Lee

    IPC分类号： H04W72/12 ,  H04W48/10 ,  H04W72/00 ,  H04W72/04

    摘要： A generation-Node B (gNB) configured for unlicensed spectrum operation above 52.6 GHz in a fifth-generation new-radio (NR) system (5GS) may encode a parameter (e.g., ssb-PositionsInBurst) for transmission to a UE (e.g., in the SIM or UE specific RRC signalling). The parameter may indicate candidate positions of synchronization signal blocks (SSBs) within a discovery reference signal (DRS) measurement timing configuration (DMTC) transmission window within slots of a system frame (SFN). During the DMTC window, the gNB may perform a LBT procedure on an unlicensed carrier of the unlicensed spectrum to determine if the unlicensed carrier is available. When the LBT is successful (i.e., the unlicensed carrier is available), the gNB may encode a discovery reference signal (DRS) for transmission on the unlicensed carrier. The DRS may include one or more of the SSBs transmitted during the candidate positions that fall within the DRS. The gNB may perform rate matching around the SSBs for a scheduled PDSCH based on the indicated parameter and transmit the rate-matched PDSCH.

    Hierarchical network and interference management
    35.
    发明授权
    Hierarchical network and interference management 有权
    分层网络和干扰管理

    公开(公告)号：US08798021B2

    公开(公告)日：2014-08-05

    申请号：US13422459

    申请日：2012-03-16

    申请人： Nitin Mangalvedhe ,  Amitabha Ghosh ,  Bishwarup Mondal ,  Rapeepat Ratasuk

    发明人： Nitin Mangalvedhe ,  Amitabha Ghosh ,  Bishwarup Mondal ,  Rapeepat Ratasuk

    IPC分类号： H04W4/00

    CPC分类号： H04W24/02

    摘要： The specification and drawings present a new method, apparatus and software related product (e.g., a computer readable memory) for network management through a hierarchical architecture with a control functionality of a network server (e.g., C-SON) in relationship to clusters comprising eNBs (access points), and for implementing coordinated multi-point (CoMP) transmission and reception in conjunction with inter-cell interference coordination (ICIC) in wireless networks such as LTE wireless networks. In particular, embodiments of the invention describe control and coordination mechanisms among the network elements for different network architectures and use-case scenarios. Such mechanisms may be managed by a centralized self-organizing network controller such as C-SON and hierarchically via localized controllers (such as cluster coordinators) residing in macro eNBs depending on system architectural constraints and network state. A fault-tolerant mechanism then may be defined to recover from failure of controlling sub-elements so that the network remains stable at all times.

    摘要翻译： 说明书和附图提出了一种用于网络管理的新方法，装置和软件相关产品（例如，计算机可读存储器），其通过具有与包括eNB的集群相关联的网络服务器（例如，C-SON）的控制功能的分级架构 （接入点），并且用于在诸如LTE无线网络的无线网络中结合小区间干扰协调（ICIC）来实现协调的多点（CoMP）发送和接收。 特别地，本发明的实施例描述了用于不同网络架构和用例场景的网络元件之间的控制和协调机制。 这样的机制可以由诸如C-SON的集中式自组织网络控制器管理，并且根据系统架构约束和网络状态分层地经由驻留在宏eNB中的集中式控制器（例如集群协调器）来管理。 然后可以定义容错机制以从控制子元件的故障中恢复，使得网络始终保持稳定。

    Computationally efficient audio coder
    36.
    发明授权
    Computationally efficient audio coder 有权
    计算效率高的音频编码器

    公开(公告)号：US08756067B2

    公开(公告)日：2014-06-17

    申请号：US13848422

    申请日：2013-03-21

    申请人： Bishwarup Mondal

    发明人： K. P. P. Kalyan Chakravarthy ,  Navaneetha K. Ruthramoorthy ,  Pushkar P. Patwardhan ,  Bishwarup Mondal

    IPC分类号： G10L19/00

    CPC分类号： G10L19/00 ,  G10L19/002 ,  G10L19/008 ,  G10L19/02 ,  G10L19/025 ,  H04L1/0039 ,  H04L25/0262

    摘要： The present invention provides a computationally efficient technique for compression encoding of an audio signal, and further provides a technique to enhance the sound quality of the encoded audio signal. This is accomplished by including more accurate attack detection and a computationally efficient quantization technique. The improved audio coder converts the input audio signal to a digital audio signal. The audio coder then divides the digital audio signal into larger frames having a long-block frame length and partitions each of the frames into multiple short-blocks. The audio coder then computes short-block audio signal characteristics for each of the partitioned short-blocks based on changes in the input audio signal. The audio coder further compares the computed short-block characteristics to a set of threshold values to detect presence of an attack in each of the short-blocks and changes the long-block frame length of one or more short-blocks upon detecting the attack in the respective one or more short-blocks.

    摘要翻译： 本发明提供了一种用于音频信号的压缩编码的计算上有效的技术，并且还提供了一种用于增强编码音频信号的声音质量的技术。 这通过包括更准确的攻击检测和计算有效的量化技术来实现。 改进的音频编码器将输入音频信号转换成数字音频信号。 然后，音频编码器将数字音频信号分成具有长块帧长度的较大帧，并且将每个帧划分成多个短块。 然后，音频编码器基于输入音频信号的变化来计算每个分割的短块的短块音频信号特性。 音频编码器进一步将计算出的短块特性与一组阈值进行比较，以检测每个短块中的攻击的存在，并且在检测到攻击中改变一个或多个短块的长块帧长度 相应的一个或多个短块。

    Differential closed-loop transmission feedback in wireless communication systems
    37.
    发明授权
    Differential closed-loop transmission feedback in wireless communication systems 有权
    无线通信系统中的差分闭环传输反馈

    公开(公告)号：US08509705B2

    公开(公告)日：2013-08-13

    申请号：US12872085

    申请日：2010-08-31

    申请人： Timothy A. Thomas ,  Bishwarup Mondal ,  Eugene Visotsky ,  Frederick W. Vook

    发明人： Timothy A. Thomas ,  Bishwarup Mondal ,  Eugene Visotsky ,  Frederick W. Vook

    IPC分类号： H04B1/00

    CPC分类号： H04L27/2601 ,  H04B7/0617 ,  H04B7/0623 ,  H04B7/0641 ,  H04L25/0242 ,  H04L25/03006 ,  H04L25/03343 ,  H04L2025/03426

    摘要： A method and apparatus for providing channel feedback is provided herein. During operation a covariance matrix at time t (R) is calculated as a function of a received downlink signal. Matrix Ct is also calculated and is based on a previous quantized covariance matrix (Rqt-1), the covariance matrix (R) at time t, and a forgetting factor (γ) that is applied to Rqt-1. The Ct is then used to create a DERC feedback message (signal or waveform) and may be transmitted with pilots on a proper feedback channel to a base unit. The base unit receives the feedback (Ct) as a DERC waveform on a proper feedback channel. The base unit uses non-coherent or coherent detection to detect the DERC values send by the remote unit and uses the DERC values with a previous quantized covariance matrix estimate, a forgetting factor, and a weighting value to compute a covariance matrix estimate to use for beamforming. The base unit then uses the covariance matrix estimate to determine appropriate channel beamforming weights, and instructs transmit beamforming circuitry to use the appropriate weights.

    摘要翻译： 本文提供了一种用于提供信道反馈的方法和装置。 在运行期间，计算时间t（R）处的协方差矩阵作为接收的下行链路信号的函数。 还计算矩阵Ct，并且基于先前的量化协方差矩阵（Rqt-1），时间t的协方差矩阵（R）和应用于Rqt-1的遗忘因子（γ）。 然后，Ct用于创建DERC反馈消息（信号或波形），并且可以在适当的反馈信道上的导频发送到基本单元。 基本单元在适当的反馈通道上接收反馈（Ct）作为DERC波形。 基本单元使用非相干或相干检测来检测远程单元发送的DERC值，并且使用具有先前的量化协方差矩阵估计，遗忘因子和加权值的DERC值来计算协方差矩阵估计，以用于 波束成形。 基本单元然后使用协方差矩阵估计来确定适当的信道波束成形权重，并且指示发送波束成形电路使用适当的权重。

    Precoding For Coordinated Multi-Point Joint Transmission
    38.
    发明申请
    Precoding For Coordinated Multi-Point Joint Transmission 失效
    协调多点联合传输预编码

    公开(公告)号：US20130094604A1

    公开(公告)日：2013-04-18

    申请号：US13275470

    申请日：2011-10-18

    申请人： Bishwarup Mondal ,  Timothy A. Thomas ,  Eugene Visotsky

    发明人： Bishwarup Mondal ,  Timothy A. Thomas ,  Eugene Visotsky

    IPC分类号： H04L27/00

    CPC分类号： H04B7/024 ,  H04B7/0469 ,  H04B7/0478 ,  H04B7/0658

    摘要： The specification and drawings present a new method, apparatus and software related product (e.g., a computer readable memory) for implementing precoding for a coordinated multi-point joint transmission in LTE wireless systems using a specific product structure for a multi-point precoding matrix with designed and/or specified usage of multi-point codebooks for generating spatial data stream between a UE having multiple antennas and a plurality of cells.

    摘要翻译： 本说明书和附图提出了一种新的方法，装置和软件相关产品（例如，计算机可读存储器），用于在LTE无线系统中使用特定的产品结构实现协调的多点联合传输的预编码，用于多点预编码矩阵， 用于在具有多个天线的UE和多个小区之间生成空间数据流的多点码本的设计和/或指定用途。

    Computationally efficient audio coder
    39.
    发明授权
    Computationally efficient audio coder 有权
    计算效率高的音频编码器

    公开(公告)号：US08407043B2

    公开(公告)日：2013-03-26

    申请号：US13047604

    申请日：2011-03-14

    申请人： K. P. P. Kalyan Chakravarthy ,  Navaneetha K. Ruthramoorthy ,  Pushkar P. Patwardhan ,  Bishwarup Mondal

    发明人： K. P. P. Kalyan Chakravarthy ,  Navaneetha K. Ruthramoorthy ,  Pushkar P. Patwardhan ,  Bishwarup Mondal

    IPC分类号： G10L19/00

    CPC分类号： G10L19/00 ,  G10L19/002 ,  G10L19/008 ,  G10L19/02 ,  G10L19/025 ,  H04L1/0039 ,  H04L25/0262

    摘要： The present invention provides a computationally efficient technique for compression encoding of an audio signal, and further provides a technique to enhance the sound quality of the encoded audio signal. This is accomplished by including more accurate attack detection and a computationally efficient quantization technique. The improved audio coder converts the input audio signal to a digital audio signal. The audio coder then divides the digital audio signal into larger frames having a long-block frame length and partitions each of the frames into multiple short-blocks. The audio coder then computes short-block audio signal characteristics for each of the partitioned short-blocks based on changes in the input audio signal. The audio coder further compares the computed short-block characteristics to a set of threshold values to detect presence of an attack in each of the short-blocks and changes the long-block frame length of one or more short-blocks upon detecting the attack in the respective one or more short-blocks.

    摘要翻译： 本发明提供了一种用于音频信号的压缩编码的计算上有效的技术，并且还提供了一种用于增强编码音频信号的声音质量的技术。 这通过包括更准确的攻击检测和计算有效的量化技术来实现。 改进的音频编码器将输入音频信号转换成数字音频信号。 然后，音频编码器将数字音频信号分成具有长块帧长度的较大帧，并且将每个帧划分成多个短块。 然后，音频编码器基于输入音频信号的变化来计算每个分割的短块的短块音频信号特性。 音频编码器进一步将计算出的短块特性与一组阈值进行比较，以检测每个短块中的攻击的存在，并且在检测到攻击中改变一个或多个短块的长块帧长度 相应的一个或多个短块。