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    Local transmission and wide area transmission in wireless broadcast communication network
    14.
    发明专利
    Local transmission and wide area transmission in wireless broadcast communication network 审中-公开
    无线广播通信网络中的本地传输和宽带传输

    公开(公告)号：JP2010226735A

    公开(公告)日：2010-10-07

    申请号：JP2010098862

    申请日：2010-04-22

    Applicant: Qualcomm Inc ,  クゥアルコム・インコーポレイテッドQualcomm Incorporated

    Inventor： MURALI RAMASWAMY ,  LING FUYUN ,  VIJAYAN RAJIV ,  WALKER KENT G ,  MANTRAVADI ASHOK ,  SUBRAMANIAM ANAND D

    IPC: H04W4/06 ,  H04L12/18 ,  H04L12/56 ,  H04W72/04 ,  H04W74/04 ,  H04W88/08

    CPC classification number: H04L5/0041 ,  H04L5/0007 ,  H04L5/0044 ,  H04L5/0048 ,  H04L12/189 ,  H04W72/005

    Abstract: PROBLEM TO BE SOLVED: To provide a method for performing local transmission and wide area transmission in a wireless broadcast communication network. SOLUTION: In order to perform broadcast communications of transmission of different type having a hierarchy with different communication-possible range in a wireless broadcast communication network, each base station processes data for the wide area transmission according to a first mode (or coding scheme and modulation scheme) (S812), and processes data for the local transmission according to a second mode (S814). Based on each desired communication-possible range for the wide area transmission and the local transmission, each of the first mode and the second mode is selected. Each base station performs the broadcast communication on the local transmission and the wide area transmission as well as pilots related to them, based on different characteristics for a multi-frequency network and a single network. COPYRIGHT: (C)2011,JPO&INPIT

    Abstract translation: 要解决的问题：提供一种用于在无线广播通信网络中执行本地传输和广域传输的方法。 解决方案：为了在无线广播通信网络中执行具有不同通信可能范围的层次的不同类型的传输的广播通信，每个基站根据第一模式（或编码）处理广域传输的数据 方案和调制方案）（S812），并且根据第二模式处理用于本地传输的数据（S814）。 基于用于广域传输和本地传输的每个期望的通信可能范围，选择第一模式和第二模式中的每一个。 基于多频网络和单个网络的不同特性，每个基站在本地传输和广域传输以及与它们相关的导频上执行广播通信。 版权所有（C）2011，JPO＆INPIT

    Transmission in multi-channel communication system using selective channel power control
    15.
    发明专利
    Transmission in multi-channel communication system using selective channel power control 有权
    使用选择通道功率控制的多通道通信系统中的传输

    公开(公告)号：JP2009081873A

    公开(公告)日：2009-04-16

    申请号：JP2008291137

    申请日：2008-11-13

    Applicant: Qualcomm Inc ,  クゥアルコム・インコーポレイテッドQualcomm Incorporated

    Inventor： KETCHUM JOHN W ,  HOWARD STEVEN J ,  WALTON JAY ROD ,  WALLACE MARK S ,  LING FUYUN

    IPC: H04J11/00 ,  H04J99/00 ,  H04B7/005 ,  H04B7/04 ,  H04B7/06 ,  H04B7/26 ,  H04L1/00 ,  H04L1/06 ,  H04L5/06 ,  H04L25/03 ,  H04L27/26

    CPC classification number: H04W52/346 ,  H04L1/0009 ,  H04L1/0068 ,  H04L1/06 ,  H04L5/0023 ,  H04L5/0037 ,  H04L5/0046 ,  H04L5/006 ,  H04L5/06 ,  H04L25/03343 ,  H04L2001/0096 ,  H04W52/24 ,  H04W52/42

    Abstract: PROBLEM TO BE SOLVED: To provide an effective coding and modulation scheme capable of processing data before transmission on a channel. SOLUTION: Data are coded on the basis of a common coding and modulation scheme to provide modulation symbols and the modulation symbols for each selected channel are pre-weighted on the basis of channel's characteristics. The pre-weighting may be achieved by "inverting" the selected channels so that the received SNRs are approximately similar for all selected channels. With selective channel inversion, only channels having SNRs at or above a particular threshold are selected, "bad" channels are not used, and the total available transmit power is distributed across only "good" channels. Improved performance is achieved due to the combined benefits of using only the Ns best channels and matching the received SNR of each selected channel to the SNR required by the selected coding and modulation scheme. COPYRIGHT: (C)2009,JPO&INPIT

    Abstract translation: 要解决的问题：提供能够在通道上传输之前处理数据的有效的编码和调制方案。 解决方案：基于通用编码和调制方案对数据进行编码以提供调制符号，并且基于信道的特性对每个选定信道的调制符号进行预加权。 预加权可以通过“反转”所选择的信道来实现，使得接收的SNR对于所有选择的信道大致相似。 通过选择性信道反转，仅选择具有等于或高于特定阈值的SNR的信道，不使用“坏”信道，并且总可用发射功率仅在“良好”信道上分布。 由于仅使用Ns最佳信道并且将每个所选信道的接收SNR与所选择的编码和调制方案所需的SNR相匹配的综合益处，实现了改进的性能。 版权所有（C）2009，JPO＆INPIT

    Procedimiento y aparato para determinar la localización de un dispositivo móvil en una red inalámbrica
    17.
    发明专利
    Procedimiento y aparato para determinar la localización de un dispositivo móvil en una red inalámbrica 未知

    公开(公告)号：ES2758989T3

    公开(公告)日：2020-05-07

    申请号：ES13179225

    申请日：2007-01-04

    Applicant: QUALCOMM INC

    Inventor： MUKKAVILLI KRISHNA KIRAN ,  LING FUYUN ,  WALKER GORDON KENT ,  CHARI MURALI RAMASWAMY

    IPC: G01S19/06 ,  H04W64/00 ,  G01S5/02 ,  G01S19/25 ,  H04L5/00

    Abstract: Un procedimiento (800) para determinar la posición de un dispositivo en una red, comprendiendo el procedimiento: descodificar (806) un símbolo que comprende subportadoras para determinar la información de identificación que identifica a un transmisor activo, comprendiendo la descodificación la división de las subportadoras del símbolo, que comprende un canal piloto de posicionamiento, PPC, teniendo el símbolo una parte activa y una inactiva, en el que la parte activa comprende la información de identificación del transmisor activo, y la parte inactiva comprende transmisiones de transmisores que no están en un estado activo para proporcionar estabilidad de potencia para mantener el rendimiento de la red; determinar (810) una estimación de canal asociada con el transmisor activo; repetir (814) la descodificación y la determinación para una pluralidad de símbolos de modo que se determinen una pluralidad de transmisores activos asociados con una pluralidad de estimaciones de canal, respectivamente; y calcular (816) la posición del dispositivo basada al menos en parte en la pluralidad de transmisores activos y la pluralidad de estimaciones de canal.

    18.
    发明专利
    未知

    公开(公告)号：BR0010421B1

    公开(公告)日：2014-11-25

    申请号：BR0010421

    申请日：2000-05-10

    Applicant: QUALCOMM INC

    Inventor： LING FUYUN

    IPC: H04B1/707 ,  H04B1/7085 ,  H04B1/7115 ,  H04B7/005 ,  H04L25/02 ,  H04Q7/38

    Abstract: Apparatus for a transmitter and a receiver which enhance the performance of a system coherent demodulation by utilizing non-pilot sub-channels to enhance the accuracy of estimates of amplitude and phase noise inherent in the transmission channel is described. This enhancement is accomplished by utilizing the corrected received data on a fundamental channel to enhance a pilot channel estimate, which is subsequently utilized by a dot product module in demodulating a supplementary data channel.

    19.
    发明专利
    未知

    公开(公告)号：DE602006012641D1

    公开(公告)日：2010-04-15

    申请号：DE602006012641

    申请日：2006-03-09

    Applicant: QUALCOMM INC

    Inventor： VRCELJ BOJAN ,  MANTRAVADI ASHOK ,  LING FUYUN ,  VIJAYAN RAJIV ,  WANG MICHAEL MAO

    IPC: H04L27/26

    Abstract: A method for positioning a collection window for a Fourier transform function is disclosed. A first orthogonal frequency division multiplexing (OFDM) symbol and a second OFDM symbol are received. The first OFDM symbol comprises a plurality of frequency division multiplexed (FDM) symbols. The first OFDM symbol is characterized by at least two of the following: a delay spread, a first arriving path (FAP), or a last arriving path (LAP). A channel location is estimated from a channel impulse response. A point relative to the channel location is selected. A beginning of the collection window is positioned for the second OFDM symbol at the selected point. Alternatively, a point is selected at a first location relative to the channel location using a first algorithm if a delay spread is less than a predetermined length. The selected point is chosen at a second location relative to the channel location using a second algorithm if the delay spread is greater than the predetermined length.

    20.
    发明专利
    未知

    公开(公告)号：BRPI0609289A2

    公开(公告)日：2010-03-09

    申请号：BRPI0609289

    申请日：2006-03-10

    Applicant: QUALCOMM INC

    Inventor： KRISHNAMOORTHI RAGHURAMAN ,  LING FUYUN ,  VIJAYAN RAJIV

    IPC: H04L27/26

    Abstract: Systems and methods are provided for transmitting OFDM information via IFFT up-sampling components that transmit data at a higher sampling rate than conventional systems to simplify filter requirements and mitigate leakage between symbols. In one embodiment, an NL point IFFT is performed on a zero inserted set of frequency domain symbols. In another embodiment, the NL point IFFT is further optimized by exploiting the fact that (N−1) L of the frequency domain symbols are zero. This enables an embodiment that consists of a pre-processor that multiplies the input samples by complex phase factors, followed by L point IFFTs.

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