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    METHODS AND APPARATUSES FOR SAVING POWER DURING TRANSPORT BLOCK DECODING IN UMTS SYSTEMS
    41.
    发明申请
    METHODS AND APPARATUSES FOR SAVING POWER DURING TRANSPORT BLOCK DECODING IN UMTS SYSTEMS 有权
    在UMTS系统中运输块解码期间节省电力的方法和装置

    公开(公告)号：US20140053049A1

    公开(公告)日：2014-02-20

    申请号：US13589651

    申请日：2012-08-20

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

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

    IPC: H03M13/09 ,  G06F11/10

    CPC classification number: H04L1/0051 ,  H04L1/0053 ,  H04L1/0066 ,  H04L1/20

    Abstract: 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.

    Abstract translation: 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。

    Methods and apparatus for position location in a wireless network
    43.
    发明授权
    Methods and apparatus for position location in a wireless network 有权

    公开(公告)号：US08489124B2

    公开(公告)日：2013-07-16

    申请号：US12338901

    申请日：2008-12-18

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

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

    IPC: H04W24/00 ,  H04W4/00

    CPC classification number: G01S5/0205 ,  H04L5/0053 ,  H04W24/00 ,  H04W64/00

    Abstract: 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.

    Method and apparatus for adaptive timing synchronization in a communication network
    45.
    发明授权
    Method and apparatus for adaptive timing synchronization in a communication network 失效
    通信网络中自适应定时同步的方法和装置

    公开(公告)号：US08265214B2

    公开(公告)日：2012-09-11

    申请号：US12324818

    申请日：2008-11-26

    Applicant: Bojan Vrcelj ,  Krishna Kiran Mukkavilli

    Inventor： Bojan Vrcelj ,  Krishna Kiran Mukkavilli

    IPC: H04L7/00

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

    Abstract: 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.

    Abstract translation: 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。

    WIDE AREA AND LOCAL NETWORK ID TRANSMISSION FOR COMMUNICATION SYSTEMS
    46.
    发明申请
    WIDE AREA AND LOCAL NETWORK ID TRANSMISSION FOR COMMUNICATION SYSTEMS 有权
    用于通信系统的宽带和本地网络标识传输

    公开(公告)号：US20110058469A1

    公开(公告)日：2011-03-10

    申请号：US12948759

    申请日：2010-11-18

    Applicant: Michael Mao Wang ,  Bojan Vrcelj ,  Krishna Kiran Mukkavilli ,  Raghuraman Krishnamoorthi ,  Rajiv Vijayan

    Inventor： Michael Mao Wang ,  Bojan Vrcelj ,  Krishna Kiran Mukkavilli ,  Raghuraman Krishnamoorthi ,  Rajiv Vijayan

    IPC: H04J11/00 ,  H04L27/28

    CPC classification number: H04L5/0048 ,  H04L5/0007 ,  H04L5/0083 ,  H04L27/261

    Abstract: The embodiments utilize OFDM symbols to communicate network IDs. The IDs are encoded into symbols utilizing the network IDs as seeds to scramble respective pilots that are then transmitted by utilizing the symbols. The pilots can be structured into a single OFDM symbol and/or multiple OFDM symbols. The single symbol structure for transmitting the network IDs is independent of the number of network ID bits and minimizes frequency offset and Doppler effects. The multiple symbol structure allows a much coarser timing accuracy to be employed at the expense of transmitting additional symbols. Several embodiments employ a search function to find possible network ID candidates from a transmitted symbol and a selection function to find an optimum candidate from a network ID candidate list.

    Abstract translation: 这些实施例利用OFDM符号来传送网络ID。 ID被编码成使用网络ID作为种子的符号，以对通过利用符号进行发送的各个导频进行加扰。 导频可以被构造成单个OFDM符号和/或多个OFDM符号。 用于发送网络ID的单个符号结构与网络ID比特数无关，并且使频偏和多普勒效应最小化。 多符号结构允许以牺牲传输附加符号为代价采用更粗糙的定时精度。 几个实施例采用搜索功能来从发送的符号和选择功能中找到可能的网络ID候选，以从网络ID候选列表中找到最佳候选。

    ADAPTIVE THRESHOLDING FOR OFDM CHANNEL ESTIMATION
    50.
    发明申请
    ADAPTIVE THRESHOLDING FOR OFDM CHANNEL ESTIMATION 有权
    OFDM信道估计的自适应阈值

    公开(公告)号：US20100002785A1

    公开(公告)日：2010-01-07

    申请号：US12250135

    申请日：2008-10-13

    Applicant: Ashok Mantravadi ,  Krishna Kiran Mukkavilli ,  Raghuraman Krishnamoorthi ,  Rajeev Krishnamurthi

    Inventor： Ashok Mantravadi ,  Krishna Kiran Mukkavilli ,  Raghuraman Krishnamoorthi ,  Rajeev Krishnamurthi

    IPC: H04L27/28

    CPC classification number: H04L25/0218 ,  H04L5/0007 ,  H04L25/0204 ,  H04L25/022 ,  H04L25/0224

    Abstract: An adaptive thresholding technique eliminates suboptimum threshold values by adjusting for varying channel conditions to eliminate interference where no channel energy is present, without discarding viable taps having useful channel energy. The adaptive thresholding technique adaptively optimizes receive threshold values for both wide and local area channels based only on measured C/I ratios 300. Thresholds are calculated based on instantaneous C/I estimates and/or weighted average C/I estimates calculated from WID/LID energies obtained from the current superframe WIC/LIC symbols respectively. In alternate embodiments, thresholds are calculated based on instantaneous C/I estimates and/or weighted average C/I estimates calculated from WTPC and LTPC symbols for the wide and local area channels, respectively The present adaptive thresholding technique dynamically reduces the threshold as the C/I estimate increases to mitigate performance degradation due to removal of weak signal taps. There is a separate threshold for each of the 12 coding and modulation modes supported by an exemplary receiver.

    Abstract translation: 自适应阈值技术通过调整不同的信道条件来消除次优阈值，以消除不存在信道能量的干扰，而不丢弃具有有用信道能量的可行分接头。 自适应阈值技术仅基于测量的C / I比300自适应地优化宽和局域信道的接收阈值。阈值基于从WID / LID计算的瞬时C / I估计和/或加权平均C / I估计来计算 从当前超帧WIC / LIC符号获得的能量。 在替代实施例中，基于针对宽和局域信道的WTPC和LTPC符号计算的瞬时C / I估计和/或加权平均C / I估计来计算阈值。当前自适应阈值技术动态地将阈值设置为C /我估计增加以减轻由于去除弱信号抽头而导致的性能下降。 对于由示例性接收机支持的12个编码和调制模式中的每一个，存在单独的阈值。

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