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    Transmit format selection with consideration for resource reuse
    21.
    发明专利
    Transmit format selection with consideration for resource reuse 审中-公开
    发送格式选择考虑资源重用

    公开(公告)号：JP2011142655A

    公开(公告)日：2011-07-21

    申请号：JP2011027648

    申请日：2011-02-10

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

    Inventor： KIM BYOUNG-HOON ,  MALLADI DURGA PRASAD ,  SARKAR SANDIP

    IPC: H04J99/00 ,  H04W72/04 ,  H04W28/06 ,  H04W28/18

    CPC classification number: H04L1/0036 ,  H04L1/0003 ,  H04L1/0007 ,  H04L1/0009 ,  H04L1/0026 ,  H04L1/0034 ,  H04L1/16 ,  H04L5/0007 ,  H04L5/0016 ,  H04L5/0023 ,  H04L5/0028 ,  H04L5/0037 ,  H04L5/006

    Abstract: PROBLEM TO BE SOLVED: To provide techniques for selecting transmit formats in a manner to account for the degrees of resource reuse for multiple data streams sent simultaneously from multiple antennas. SOLUTION: The degree of resource reuse for each data stream indicates the amount of reuse of resources (e.g., orthogonal codes or subcarriers) observed by the data stream. Interference estimates for the multiple data streams are derived based on an initial resource assignment. The degrees of resource reuse are determined based on the interference estimates and are used to derive at least one correction factor (410). Then, at least one transmit format is selected for the data streams using the at least one correction factor (420). In accordance with a transmit format that indicates the amount of resources in use for the data stream and other parameters, resources are assigned to each data stream (430). COPYRIGHT: (C)2011,JPO&INPIT

    Abstract translation: 要解决的问题：提供以考虑从多个天线同时发送的多个数据流的资源重用程度来选择发送格式的技术。 解决方案：每个数据流的资源重用程度指示由数据流观察到的资源（例如，正交码或子载波）的重用量。 基于初始资源分配导出多个数据流的干扰估计。 基于干扰估计来确定资源重用程度，并且用于导出至少一个校正因子（410）。 然后，使用至少一个校正因子（420）为数据流选择至少一个发送格式。 根据指示数据流和其他参数使用的资源量的发送格式，资源被分配给每个数据流（430）。 版权所有（C）2011，JPO＆INPIT

    Velocity-estimation-based gain table
    22.
    发明专利
    Velocity-estimation-based gain table 有权
    基于速度估计的增益表

    公开(公告)号：JP2011130467A

    公开(公告)日：2011-06-30

    申请号：JP2011009970

    申请日：2011-01-20

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

    Inventor： SARKAR SANDIP ,  JOU YU-CHEUN ,  HOLTZMAN JACK M

    IPC: H04W52/28 ,  G01S11/10 ,  H04B7/005 ,  H04B7/26 ,  H04J13/00

    CPC classification number: H04W52/286 ,  G01S11/10 ,  H04W52/146 ,  H04W52/282

    Abstract: PROBLEM TO BE SOLVED: To modify gain tables for reverse-link communications, in a cdma2000 wireless communication network.
    SOLUTION: A method of modifying gain tables for the reverse-link communications, in a cdma wireless communication network includes steps 102, 106 of estimating the velocity of a mobile station for a given frame error rate (FER) and a data rate; and steps 104, 108, 110 of providing three gain options, based on the estimated velocity to specify a reverse-link transmission power level. Velocity estimation is performed, by using a level-crossing technique, a covariance approximation technique, or a Doppler spectrum estimation technique.
    COPYRIGHT: (C)2011,JPO&INPIT

    Abstract translation: 要解决的问题：在cdma2000无线通信网络中修改反向链路通信的增益表。 解决方案：在cdma无线通信网络中，修改用于反向链路通信的增益表的方法包括步骤102,106，针对给定的帧错误率（FER）估计移动站的速度和数据速率 ; 以及步骤104,108,110，其基于估计的速度来提供三个增益选项以指定反向链路传输功率电平。 通过使用电平交叉技术，协方差近似技术或多普勒频谱估计技术来执行速度估计。 版权所有（C）2011，JPO＆INPIT

    TDD OPERATION IN WIRELESS COMMUNICATION SYSTEMS
    25.
    发明申请
    TDD OPERATION IN WIRELESS COMMUNICATION SYSTEMS 审中-公开
    无线通信系统中的TDD操作

    公开(公告)号：WO2009089287A3

    公开(公告)日：2009-11-05

    申请号：PCT/US2009030342

    申请日：2009-01-07

    Applicant: QUALCOMM INC ,  SARKAR SANDIP

    Inventor： SARKAR SANDIP

    IPC: H04W56/00 ,  H04W80/00

    CPC classification number: H04W56/0035 ,  H04L5/14 ,  H04W72/04

    Abstract: A method provides a wireless frame protocol. The method includes communicating a transmission interval that facilitates switching between a downlink portion and an uplink portion of a wireless communications channel. The method employs one or more guard periods during the transmission interval to mitigate overlap of transmitting frequencies between the downlink and uplink portions of the wireless communications channel.

    Abstract translation: 一种方法提供无线帧协议。 该方法包括传送有助于在无线通信信道的下行链路部分和上行链路部分之间切换的传输间隔。 该方法在传输间隔期间采用一个或多个保护时段来减轻无线通信信道的下行链路和上行链路部分之间的传输频率的重叠。

    CALIBRATION AND BEAMFORMING IN A WIRELESS COMMUNICATION SYSTEM
    26.
    发明申请
    CALIBRATION AND BEAMFORMING IN A WIRELESS COMMUNICATION SYSTEM 审中-公开
    无线通信系统中的校准和射束

    公开(公告)号：WO2009046318A3

    公开(公告)日：2009-08-13

    申请号：PCT/US2008078779

    申请日：2008-10-03

    Applicant: QUALCOMM INC ,  SARKAR SANDIP

    Inventor： SARKAR SANDIP

    IPC: H04B7/06 ,  H04B17/00

    CPC classification number: H04B7/0617 ,  H04B7/0628 ,  H04B17/21

    Abstract: Techniques for performing calibration and beamforming in a wireless communication system are described. In an aspect, a Node B may periodically perform calibration in each calibration interval with a set of UEs to obtain a calibration vector for the Node B. The Node B may apply the calibration vector to account for mismatches in the responses of the transmit and receive chains at the Node B. In another aspect, the Node B may perform beamforming to a UE by taking into account gain imbalance for multiple antennas at the UE. The Node B may determine a precoding matrix for beamforming by taking into account gain imbalance due to (i) different automatic gain control (AGC) gains for receive chains at the UE, (ii) different power amplifier (PA) gains for transmit chains at the UE, and/or (iii) different antenna gains for multiple antennas at the UE.

    Abstract translation: 描述了在无线通信系统中执行校准和波束成形的技术。 在一方面，节点B可以在每个校准间隔中周期性地执行与一组UE的校准，以获得用于节点B的校准向量。节点B可以应用校准向量来解决发送和接收的响应中的不匹配 在另一方面，节点B可以通过考虑UE处的多个天线的增益不平衡来向UE执行波束赋形。 节点B可以通过考虑由于（i）UE处的接收链的不同的自动增益控制（AGC）增益而考虑增益不平衡来确定用于波束成形的预编码矩阵，（ii）用于发射链的不同功率放大器（PA）增益 UE，和/或（iii）UE处的多个天线的不同天线增益。

    MODIFIED POWER CONTROL FOR HYBRID ARQ ON THE REVERSE LINK
    28.
    发明申请
    MODIFIED POWER CONTROL FOR HYBRID ARQ ON THE REVERSE LINK 审中-公开
    反向链路混合ARQ的改进型功率控制

    公开(公告)号：WO2004064304A3

    公开(公告)日：2004-09-10

    申请号：PCT/US2004000743

    申请日：2004-01-12

    Applicant: QUALCOMM INC

    Inventor： SARKAR SANDIP ,  CHEN TAO ,  TIEDEMANN EDWARD G JR

    IPC: H04B7/005

    CPC classification number: H04W52/50 ,  H04W52/40 ,  H04W52/48

    Abstract: A method for power control in a wireless communication system. An initial transmission of a data frame in the reverse link is received, and a first energy level of the data frame is measured. An energy deficit in the first energy level is then measured if the first energy level is insufficient to correctly decode the data frame, so that when the data frame is retransmitted with a second energy level equal to a difference between the first energy level and the energy deficit, the data frame can be correctly decoded with combined energy of the first energy level and the second energy level.

    Abstract translation: 一种用于无线通信系统中的功率控制的方法。 接收反向链路中数据帧的初始传输，并测量数据帧的第一能级。 如果第一能量水平不足以正确解码数据帧，则测量第一能量水平中的能量不足量，使得当以等于第一能量水平和能量之间的差的第二能量水平重新传输数据帧时 数据帧可以用第一能级和第二能级的组合能量正确解码。

    PREAMBLE GENERATION FOR DATA PACKET TRANSMISSION IN A WIRELESS COMMUNICATION SYSTEM
    29.
    发明申请
    PREAMBLE GENERATION FOR DATA PACKET TRANSMISSION IN A WIRELESS COMMUNICATION SYSTEM 审中-公开
    无线通信系统中数据包传输的前导码生成

    公开(公告)号：WO0245311A8

    公开(公告)日：2002-07-11

    申请号：PCT/US0143617

    申请日：2001-11-20

    Applicant: QUALCOMM INC

    Inventor： ODENWALDER JOSEPH P ,  SARKAR SANDIP ,  HOLTZMAN JACK M

    IPC: H04J11/00 ,  H04J13/00 ,  H04L1/00 ,  H04L1/08 ,  H04L12/56 ,  H04L29/06 ,  H04L29/08 ,  H04W4/18 ,  H04W28/06 ,  H04J13/02

    CPC classification number: H04J13/00 ,  H04L1/0006 ,  H04L1/08 ,  H04L29/06 ,  H04L69/22 ,  H04L69/324 ,  H04W4/18 ,  H04W28/06

    Abstract: In a communication system wherein packetized data is transmitted to remote stations in a channel sensitive manner, a preamble must be transmitted with each discrete data transmission to the remote station. Method and apparatus are presented herein for generating an optimized preamble structure for use with transmissions of packetized data. An optimized preamble structure is one that is easily detectable and decodable, yet occupies a small fractional overhead of the entire transmission to the remote station. Information that needs to be carried bz a preamble are used to create a basic structural unit, which is then redundantly permuted.

    Abstract translation: 在通信系统中，分组数据以信道敏感的方式发送到远端站，必须在每个离散数据传输到远端站时发送前同步码。 本文介绍了用于生成用于传输分组数据的优化的前导码结构的方法和设备。 优化的前导码结构是一种易于检测和解码的结构，但占用了远程站整个传输的一小部分开销。 需要通过序言进行的信息用于创建基本的结构单元，然后进行冗余置换。

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