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    Pilot and data transmission in mimo (multi input multi output) system applying subband multiplexing
    81.
    发明专利
    Pilot and data transmission in mimo (multi input multi output) system applying subband multiplexing 有权
    MIMO（MULTI INPUT MULTI OUTPUT）系统中的引导和数据传输应用子带多路复用

    公开(公告)号：JP2011097605A

    公开(公告)日：2011-05-12

    申请号：JP2010270306

    申请日：2010-12-03

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

    Inventor： PALANKI RAVI ,  KHANDEKAR AAMOD ,  SUTIVONG ARAK

    IPC: H04J99/00 ,  H04J11/00 ,  H04J13/10

    CPC classification number: H04B7/04 ,  H04L1/1819 ,  H04L5/0023 ,  H04L5/0048 ,  H04L25/0206 ,  H04L25/022 ,  H04L25/0226 ,  H04L25/0228 ,  H04L25/0256

    Abstract: PROBLEM TO BE SOLVED: To provide techniques to support simultaneous transmissions for more terminals in a multiple-access system. SOLUTION: In a single-carrier frequency division multiple access (SC-FDMA) system that utilizes interleaved FDMA (IFDMA) or localized FDMA, transmitters may transmit their pilots, which are orthogonal to one another, using time division multiplexing (TDM), code division multiplexing (CDM), interleaved frequency division multiplexing (IFDM) or localized frequency division multiplexing (LFDMA). A receiver performs the complementary demultiplexing (non-multiplexing) for the pilots and may derive a channel estimate for each transmitter using an MMSE technique or a least-square technique. Data transmissions sent on the same time-frequency block are separated by spatial filter matrices. The spatial filter matrices are derived based on the channel estimates and using zero-forcing, MMSE, or maximal ratio combining technique. COPYRIGHT: (C)2011,JPO&INPIT

    Abstract translation: 要解决的问题：提供技术来支持多址系统中更多终端的同时传输。 解决方案：在采用交织FDMA（IFDMA）或局部FDMA的单载波频分多址（SC-FDMA）系统中，发射机可以使用时分复用（TDM）来发射它们彼此正交的导频 ），码分复用（CDM），交错频分复用（IFDM）或局域频分复用（LFDMA）。 接收机对导频执行互补解复用（非多路复用），并且可以使用MMSE技术或最小二乘法来为每个发射机导出信道估计。 在相同时间频率块上发送的数据传输由空间滤波器矩阵分隔开。 空间滤波器矩阵是基于信道估计和使用零强制，MMSE或最大比组合技术导出的。 版权所有（C）2011，JPO＆INPIT

    Method and apparatus for flexible hopping in multiple access communication network
    82.
    发明专利
    Method and apparatus for flexible hopping in multiple access communication network 有权
    用于多路访问通信网络中灵活搜索的方法和装置

    公开(公告)号：JP2011019219A

    公开(公告)日：2011-01-27

    申请号：JP2010153223

    申请日：2010-07-05

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

    Inventor： PALANKI RAVI ,  KHANDEKAR AAMOD

    IPC: H04B1/713 ,  H04J11/00 ,  H04W72/04

    CPC classification number: H04L5/0007 ,  H04B1/7143 ,  H04L5/0021 ,  H04L5/0048 ,  H04L9/0625 ,  H04L2209/08 ,  H04L2209/80

    Abstract: PROBLEM TO BE SOLVED: To provide a technique for efficiently designing random hopping patterns in a communications system.SOLUTION: In this method, random hopping patterns are generated, the patterns are frequently updated, different patterns are generated for different cells/sectors, and patterns of nearby sub-carriers are generated for block hopping. A first number of sub-carriers are determined. A second number of hop ports are determined. A third number of seeds are determined. At least one hopping pattern is generated based on the first number of sub-carriers, the second number of hop ports and the third number of seeds.

    Abstract translation: 要解决的问题：提供一种在通信系统中有效设计随机跳频模式的技术。解决方案：在该方法中，生成随机跳频模式，频繁更新模式，为不同的小区/扇区生成不同的模式，并且模式 生成了用于块跳跃的附近副载波。 确定第一数量的副载波。 确定第二个跳数端口数。 确定第三数量的种子。 基于第一数量的子载波，第二跳数端口和第三数量的种子来生成至少一个跳频模式。

    Signal acquisition in wireless communication system
    83.
    发明专利
    Signal acquisition in wireless communication system 有权
    无线通信系统信号采集

    公开(公告)号：JP2010213317A

    公开(公告)日：2010-09-24

    申请号：JP2010096911

    申请日：2010-04-20

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

    Inventor： KHANDEKAR AAMOD ,  AGRAWAL AVNEESH

    IPC: H04W56/00 ,  H04J3/00 ,  H04J13/00 ,  H04L27/26

    CPC classification number: H04L5/0048 ,  H04B1/7077 ,  H04B2201/70701 ,  H04B2201/70702 ,  H04L5/0026 ,  H04L25/0204 ,  H04L25/03866 ,  H04L27/2613 ,  H04L27/2657 ,  H04L27/2662 ,  H04L27/2675

    Abstract: PROBLEM TO BE SOLVED: To minimize the amount of pilots to be acquired by both base stations and terminals. SOLUTION: A base station transmits a TDM pilot 1 having multiple instances of a pilot-1 sequence generated with a PN1 sequence and a TDM pilot 2 having at least one instance of a pilot-2 sequence generated with a PN2 sequence. Each base station is assigned a specific PN2 sequence that uniquely identifies that base station. A terminal uses TDM pilot 1 to detect the presence of a signal and uses TDM pilot 2 to discriminate base stations and obtain accurate timing. For signal detection, the terminal performs delayed correlation on received samples, performs direct correlation on the received samples with PN1 sequences for K 1 different time offsets and identifies K 2 strongest TDM pilot-1 instances. For time synchronization, the terminal performs direct correlation on the received samples with PN2 sequences to detect TDM pilot 2. COPYRIGHT: (C)2010,JPO&INPIT

    Abstract translation: 要解决的问题：最小化由基站和终端获取的导频的数量。 解决方案：基站发送具有由PN1序列生成的导频1序列的多个实例的TDM导频1和具有由PN2序列生成的导频-2序列的至少一个实例的TDM导频2。 为每个基站分配唯一标识该基站的特定PN2序列。 终端使用TDM导频1来检测信号的存在，并使用TDM导频2来区分基站并获得准确的定时。 对于信号检测，终端在接收到的采样上执行延迟相关，对接收到的样本执行与不同时间偏移量的PN1序列的直接相关，并且识别K 2 最强的TDM导频 -1个实例。 对于时间同步，终端对PN2序列的接收样本进行直接相关，以检测TDM导频2.版权所有（C）2010，JPO＆INPIT

    Latency reduction techniques in wireless communications
    87.
    发明专利
    Latency reduction techniques in wireless communications 未知

    公开(公告)号：AU2017291825B2

    公开(公告)日：2020-06-18

    申请号：AU2017291825

    申请日：2017-07-06

    Applicant: QUALCOMM INC

    Inventor： CHEN WANSHI ,  HOSSEINI SEYEDKIANOUSH ,  GAAL PETER ,  YERRAMALLI SRINIVAS ,  XU HAO ,  SUN JING ,  PATEL SHIMMAN ARVIND ,  KHANDEKAR AAMOD

    IPC: H04L1/18 ,  H04L5/00

    Abstract: Methods, systems, and devices for wireless communication are described that provide for reduced timing between certain downlink communications and responsive uplink communications relative to certain legacy systems (e.g., legacy LTE systems). A user equipment (UE) or base station may be capable of operating using two or more timing configurations that each include an associated time period between receipt of a downlink communication (e.g., a grant of uplink resources or shared channel data) and a responsive uplink communication (e.g., an uplink transmission using the granted uplink resources or feedback of successful reception of the shared channel data). In cases where a UE or base station are capable of two or more timing configurations, a timing configuration for a transmission may be determined and the responsive uplink communication transmitted according to the determined timing configuration.

    Procedimiento y aparato para lograr un ancho de banda flexible utilizando bandas de protección variables
    89.
    发明专利
    Procedimiento y aparato para lograr un ancho de banda flexible utilizando bandas de protección variables 未知

    公开(公告)号：ES2749425T3

    公开(公告)日：2020-03-20

    申请号：ES06836587

    申请日：2006-10-27

    Applicant: QUALCOMM INC

    Inventor： KHANDEKAR AAMOD ,  PALANKI RAVI

    IPC: H04L5/00 ,  H04L27/26

    Abstract: Un aparato, que comprende: medios (912) para determinar subportadoras utilizables y subportadoras de protección basadas en un ancho de banda operativo configurable para un sistema de comunicación inalámbrica, y caracterizado por: el ancho de banda es configurable mediante el uso de bandas de protección variables, una en cada uno de los dos lados del ancho de banda operativo, en el que las bandas de protección se varían seleccionando diferentes números de subportadoras; y en el que las bandas de protección comprenden bandas de protección de longitudes desiguales; y medios (914) para realizar el procesamiento de una transmisión enviada en las subportadoras utilizables.

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