中科微点-全球专利检索

  1. Login
  2. Sign Up

Search Results

190 records (took 0.03 seconds)

    Method and apparatus for quick retransmission of signals in communication system
    11.
    发明专利
    Method and apparatus for quick retransmission of signals in communication system 有权
    用于通信系统中信号快速恢复的方法和装置

    公开(公告)号：JP2012080582A

    公开(公告)日：2012-04-19

    申请号：JP2011284076

    申请日：2011-12-26

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

    Inventor： JALALI AHMAD ,  ESTEVES EDUARDO A S ,  SINDHUSHAYANA NAGABHUSHANA T ,  BLACK PETER J ,  ATTAR RASHID A

    IPC: H04L1/16 ,  H04L1/00 ,  H04L1/18 ,  H04Q7/38 ,  H04W28/04

    CPC classification number: H04L1/1887 ,  H04L1/1692 ,  H04L1/1809 ,  H04L1/1848 ,  H04L1/1877 ,  H04L1/188

    Abstract: PROBLEM TO BE SOLVED: To provide a method and an apparatus for a quick retransmission of signals in a communication system.SOLUTION: A transmitting terminal, transmits transmission signals in a form of packets to a receiving terminal, if the packet was intended for the receiving terminal, and the receiving terminal demodulates the packet. The receiving terminal then computes a quality metric of the packet, and compares the computed quality metric with a quality metric contained in the packet. If the quality metrics match, the packet is forwarded for further processing. If the quality metrics fail to match, the receiving terminal sends a request for retransmission of the packet. The transmitting terminal determines which packet needs to be retransmitted based on the request for retransmission. If delivery of the packet in accordance with the aforementioned description fails, retransmission in accordance with conventional sequence-number-based schemes, e.g., radio link protocol, is attempted.

    Abstract translation: 要解决的问题：提供一种在通信系统中快速重发信号的方法和装置。 解决方案：如果分组旨在用于接收终端，则发送终端以分组的形式向接收终端发送发送信号，并且接收终端解调分组。 接收终端然后计算分组的质量度量，并将计算的质量度量与分组中包含的质量度量进行比较。 如果质量度量匹配，则转发数据包用于进一步处理。 如果质量度量不匹配，则接收终端发送分组请求。 发送终端根据重传请求确定哪个分组需要重传。 如果根据上述描述的分组的传送失败，则尝试根据常规的基于序列号的方案，例如无线电链路协议进行重传。 版权所有（C）2012，JPO＆INPIT

    Antenna array pattern distortion mitigation
    12.
    发明专利
    Antenna array pattern distortion mitigation 审中-公开
    天线阵列失真减缓

    公开(公告)号：JP2011182390A

    公开(公告)日：2011-09-15

    申请号：JP2011023973

    申请日：2011-02-07

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

    Inventor： FERNANDEZ-CORBATON IVAN ,  JALALI AHMAD ,  OZAKI ERNEST T ,  SIMON HARRIS SMITH ,  GREGORY SHERMAN A

    IPC: H04B7/10 ,  H04B7/06

    CPC classification number: H01Q25/00

    Abstract: PROBLEM TO BE SOLVED: To provide a way to perform point-to-multipoint transmission using an adaptive or directional antenna while reducing an antenna array pattern distortion.
    SOLUTION: Generally, rather than transmitting a same waveform to two or more receivers, an information bearing signal is transformed into different decorrelated waveforms and each decorrelated waveform is transmitted to a different receiver. In one implementation, an information bearing signal is transformed into two decorrelated signals S
    1 (t), S
    2 (t), such that their cross-correlation or auto-correlation of the information bearing signal, is zero or very small. Such decorrelation may be achieved by sending a first signal to a first receiver 104, while sending a second signal with a radio frequency spectrum that is the spectrally inverted version of the first signal to a second receiver 106. In another implementation, a first signal is transmitted to the first receiver 104, and is also transmitted to the second receiver 106 with a time delay.
    COPYRIGHT: (C)2011,JPO&INPIT

    Abstract translation: 要解决的问题：提供一种使用自适应或定向天线执行点对多点传输的方法，同时减少天线阵列模式失真。 解决方案：通常，不是向两个或更多个接收器发送相同的波形，而是将信息承载信号转换成不同的去相关波形，并将每个去相关的波形传输到不同的接收机。 在一个实现中，信息承载信号被变换成两个去相关信号S SB S（t），S SB SB（t），使得它们的互相关或自相关 的信息轴承信号，为零或非常小。 这种去相关可以通过向第一接收机104发送第一信号，同时以具有第一信号的频谱反转版本的射频频谱向第二接收机106发送第二信号来实现。在另一实现中，第一信号是 发送到第一接收机104，并且也以时间延迟发送到第二接收机106。 版权所有（C）2011，JPO＆INPIT

    Suppressing cross-polarization interference in orthogonal communication link
    13.
    发明专利
    Suppressing cross-polarization interference in orthogonal communication link 审中-公开
    抑制正交通信链路中的交叉极化干扰

    公开(公告)号：JP2010035178A

    公开(公告)日：2010-02-12

    申请号：JP2009198544

    申请日：2009-08-28

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

    Inventor： CHAKRAVARTY SUMANTRA ,  JALALI AHMAD ,  SCHIFF LEONARD NORMAN

    IPC: H04J11/00 ,  H04B1/707 ,  H04B7/14 ,  H04B7/216 ,  H04J13/00

    CPC classification number: H04B7/216 ,  H04J13/0048 ,  H04J13/18

    Abstract: PROBLEM TO BE SOLVED: To provide theoretically advanced throughput against overall noise and interference environment.
    SOLUTION: An OCDMA transmission arrangement involves encoding both first and second nominally orthogonal polarization signals with a same long code, and transmitting the long-encoded first and second nominally orthogonal polarization signals from respective first and second transmission sources to at least one destination. A corresponding OCDMA demodulating arrangement demodulates the first and second nominally orthogonal polarization signals that were transmitted from respective first and second transmission sources after having been encoded with the same long code.
    COPYRIGHT: (C)2010,JPO&INPIT

    Abstract translation: 要解决的问题：为整体噪声和干扰环境提供理论上先进的吞吐量。 解决方案：OCDMA传输装置包括用相同的长码对第一和第二标称正交极化信号进行编码，以及将长编码的第一和第二标称正交极化信号从相应的第一和第二传输源发送到至少一个目的地 。 相应的OCDMA解调装置在已经用相同的长码编码之后解调从相应的第一和第二传输源发送的第一和第二名义上正交的极化信号。 版权所有（C）2010，JPO＆INPIT

    Procedimiento y aparato para generar señales piloto en un sistema MIMO
    15.
    发明专利
    Procedimiento y aparato para generar señales piloto en un sistema MIMO 未知

    公开(公告)号：ES2701182T3

    公开(公告)日：2019-02-21

    申请号：ES10009631

    申请日：2001-07-11

    Applicant: QUALCOMM INC

    Inventor： JALALI AHMAD ,  WALTON JAY ,  WALLACE MARK

    IPC: H04J11/00 ,  H04L5/00 ,  H04B7/06 ,  H04L1/00 ,  H04L1/06 ,  H04L5/02 ,  H04L12/801 ,  H04L12/851 ,  H04L27/26

    Abstract: Un procedimiento para generar flujos de datos en un sistema de comunicación inalámbrica de múltiples entradas y múltiples salidas, MIMO, que tiene una pluralidad de usuarios, que comprende: obtener al menos un flujo de datos (X1... XK) para cada usuario de la pluralidad de usuarios; obtener una secuencia ortogonal (W1... WK) para cada usuario en la pluralidad de usuarios; escalar el al menos un flujo de datos (X1... XK) para cada usuario con un factor de escalado respectivo (G1... GK) para proporcionar un ajuste de potencia para el al menos un flujo de datos (X1... XK); y multiplicar el al menos un flujo de datos escalado (X1... XK) para cada usuario con la secuencia ortogonal (W1... WK) para que el usuario obtenga al menos un flujo de datos multiplicado para cada uno de la pluralidad de usuarios; combinar el al menos un flujo de datos multiplicado para cada uno de la pluralidad de usuarios para generar un flujo de datos combinado; e intercalar los datos en el flujo de datos combinado para proporcionar diversidad temporal.

    Selección de velocidad para un sistema OFDM
    17.
    发明专利
    Selección de velocidad para un sistema OFDM 未知

    公开(公告)号：ES2648013T3

    公开(公告)日：2017-12-28

    申请号：ES02804011

    申请日：2002-11-20

    Applicant: QUALCOMM INC

    Inventor： JALALI AHMAD ,  FERNANDEZ CORBATON IVAN

    IPC: H04J11/00 ,  H04L27/26 ,  H04L1/00 ,  H04L1/18 ,  H04L29/08

    Abstract: Un procedimiento para determinar una velocidad de datos para una transmisión de datos por un canal de comunicación en un sistema de comunicación inalámbrica, que comprende: identificar un conjunto de parámetros indicativos de una velocidad de datos particular para la transmisión de datos; estimar una o más características del canal de comunicación; obtener una métrica para un canal equivalente basándose en el conjunto de parámetros y la una o más características de canal estimadas; determinar una calidad de señal umbral requerida para que el canal equivalente soporte la velocidad de datos particular; e indicar si la velocidad de datos particular es soportada por el canal de comunicación basándose en la métrica y la calidad de la señal umbral o no.

    TIMING CIRCUIT CALIBRATION IN DEVICES WITH SELECTABLE POWER MODES
    18.
    发明专利
    TIMING CIRCUIT CALIBRATION IN DEVICES WITH SELECTABLE POWER MODES 未知

    公开(公告)号：IN4423CHN2014A

    公开(公告)日：2015-09-04

    申请号：IN4423CHN2014

    申请日：2014-06-16

    Applicant: QUALCOMM INC

    Inventor： MOEGLEIN MARK L ,  JALALI AHMAD ,  TIAN BIN ,  KING SCOTT

    IPC: H04W52/02

    Abstract: Techniques are provided which may be implemented in various methods apparatuses and/or articles of manufacture for use by a device that is operable in a plurality of modes including 'higher power mode' and a 'lower power mode'. A timing circuit may be set based at least in part on a phase value obtained from a signal from a ground based transmitter and operation of the device may be selectively transitioned to a lower power mode wherein the device uses the timing circuit. In certain example implementations operation of the device to the lower power mode may be selectively transition and based at least in part on a determination that one or more attribute values satisfy a profile test indicating that the electronic device is likely to be within a characterized environment and/or a determination that the electronic device is likely to be in a constrained motion state.

Patent Agency Ranking