中科微点-全球专利检索

  1. Login
  2. Sign Up

Search Results

292 records (took 0.028 seconds)

    Method and system for handoff in broadcast communication system
    4.
    发明专利
    Method and system for handoff in broadcast communication system 有权
    广播通信系统中的切换方法和系统

    公开(公告)号：JP2009089408A

    公开(公告)日：2009-04-23

    申请号：JP2008287117

    申请日：2008-11-07

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

    Inventor： CHEN TAO ,  WANG JUN ,  SINNARAJAH RAGULAN ,  BUTLER BRIAN K ,  TIEDEMANN EDWARD G JR

    IPC: H04B7/26 ,  H04W36/18 ,  H04L12/56 ,  H04W4/06 ,  H04W4/08 ,  H04W36/08 ,  H04W36/30 ,  H04W36/36 ,  H04W48/08

    CPC classification number: H04W36/0027 ,  H04W4/06 ,  H04W36/08 ,  H04W36/18 ,  H04W36/30 ,  H04W36/36 ,  H04W72/005

    Abstract: PROBLEM TO BE SOLVED: To provide a method and a system for handoff, in a broadcast communication system.
    SOLUTION: A subscriber assisted handoff is difficult to be practical in a broadcast communication system due to, for example, a high signaling load, or a difficulty in synchronizing the broadcast transmission. Meanwhile, the small number of broadcast channels enables a subscriber station to autonomously perform handoff. To streamline the autonomous handoff decision process, rules for transitioning among several distinct sets of pilot identifiers are defined. To fully integrate broadcast services with the services provided by the cellular telephone systems in a subscriber environment, methods for various handoff scenarios are analyzed.
    COPYRIGHT: (C)2009,JPO&INPIT

    Abstract translation: 要解决的问题：在广播通信系统中提供切换的方法和系统。 解决方案：由于例如高信令负载或同步广播传输的困难，用户辅助切换在广播通信系统中难以实际。 同时，少量的广播频道使得用户站能够自主地执行切换。 为了简化自主切换决策过程，定义了在几个不同的导频标识符集之间进行转换的规则。 为了将广播服务与蜂窝电话系统在用户环境中提供的服务完全整合，分析了各种切换场景的方法。 版权所有（C）2009，JPO＆INPIT

    Method for two or more transmitters to share cdm channel, and cdma system
    5.
    发明专利
    Method for two or more transmitters to share cdm channel, and cdma system 有权
    两台或更多发射机分享CDM通道和CDMA系统的方法

    公开(公告)号：JP2005006343A

    公开(公告)日：2005-01-06

    申请号：JP2004199195

    申请日：2004-07-06

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

    Inventor： AGRAWAL AVNEESH ,  BUTLER BRIAN K

    IPC: H04B1/04 ,  H04B7/216 ,  H04B7/26 ,  H04J11/00 ,  H04J13/00 ,  H04J13/18 ,  H04Q7/38

    CPC classification number: H04J13/0048 ,  H04J13/18

    Abstract: PROBLEM TO BE SOLVED: To provide a method for two or more transmitters to share a single code division multiplex (CDM) system, and code division multiple access (CDMA) system.
    SOLUTION: A set of orthogonal channelizing codes is generated, and each transmitter is allocated the orthogonal channelizing codes and pseudonoise polynomials in a predetermined manner. The transmitters channelize each user signal using an orthogonal channelizing code, and spread each user signal using a pseudonoise spreading code. Each transmitter employs the same PN (pseudonoise) spreading codes and time offsets. No one orthogonal channelizing code is assigned to more than two transmitters during the time period in which they are sharing a CDM channel. The spread signals are summed at each transmitter prior transmission as a composite signal. The offsets are time-precorrected to ensure time alignment at the receivers. The frequencies of signals are precorrected to ensure frequency alignment at the receivers.
    COPYRIGHT: (C)2005,JPO&NCIPI

    Abstract translation: 要解决的问题：提供一种用于两个或多个发射机共享单个码分多路复用（CDM）系统和码分多址（CDMA）系统的方法。 解决方案：生成一组正交信道化码，并且以预定的方式为每个发射机分配正交信道化码和伪噪声多项式。 发射机使用正交信道化码对每个用户信号进行信道化，并且使用伪噪声扩展码来扩展每个用户信号。 每个发射机采用相同的PN（伪噪声）扩展码和时间偏移。 在共享CDM信道的时间段期间，没有一个正交信道化码被分配给两个以上的发射机。 扩展信号在每个发射机之前的传输中相加，作为复合信号。 补偿是时间预处理的，以确保接收器的时间对齐。 信号的频率被预先校正，以确保接收器处的频率对准。 版权所有（C）2005，JPO＆NCIPI

    Method and apparatus for controlling transmission gated communication system
    6.
    发明专利
    Method and apparatus for controlling transmission gated communication system 有权
    用于控制传输门控通信系统的方法和装置

    公开(公告)号：JP2011055516A

    公开(公告)日：2011-03-17

    申请号：JP2010223583

    申请日：2010-10-01

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

    Inventor： JOU YU-CHEUN ,  SAIFUDDIN AHMED ,  TIEDEMANN EDWARD G JR ,  BUTLER BRIAN K

    IPC: H04B7/26 ,  H04J13/00 ,  H04B1/707 ,  H04B7/005

    CPC classification number: H04W52/54 ,  H04B2201/70703 ,  H04W52/44

    Abstract: PROBLEM TO BE SOLVED: To provide a method and system for communicating a frame of information according to a discontinuous transmit format.
    SOLUTION: The method transmits eighth rate speech or data frames by employing transmit gating and energy scaling which simultaneously reduces the battery usage of a variable rate wireless communication device 50, increases the capacity of the reverse link, and provides reliable communication of the eighth rate frames. Four methods are presented for transmitting an eighth rate data frame in which half of the frame is gated out and the remaining data is transmitted at nominal transmission energy to accomplish the goals. In addition, a power control system identifies forward link power control bits that have been gated out by the remote station 50 and inhibits adjustment of the transmission energy in response to that identification.
    COPYRIGHT: (C)2011,JPO&INPIT

    Abstract translation: 要解决的问题：提供一种根据不连续发送格式来传送信息帧的方法和系统。 解决方案：该方法通过采用发射门控和能量缩放发送第八速率语音或数据帧，同时减少可变速率无线通信设备50的电池使用量，增加反向链路的容量，并提供可靠的通信 第八速率帧。 呈现四种方法用于发送第八速率数据帧，其中帧的一半被门控并且剩余数据以标称传输能量传输以实现目标。 此外，功率控制系统识别由远程站50门控的前向链路功率控制位，并且响应于该识别而禁止对传输能量的调整。 版权所有（C）2011，JPO＆INPIT

    System for direct sequence spreading
    7.
    发明专利
    System for direct sequence spreading 审中-公开
    直接序列扩展系统

    公开(公告)号：JP2011045096A

    公开(公告)日：2011-03-03

    申请号：JP2010204841

    申请日：2010-09-13

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

    Inventor： BUTLER BRIAN K ,  MOHSENI JAFAR M ,  JOHN DEEPU ,  ZHANG HAITAO

    IPC: H04J13/10 ,  H04B1/707 ,  H04B1/7093

    CPC classification number: H04B1/7093 ,  H04B1/707

    Abstract: PROBLEM TO BE SOLVED: To provide a system having solved a problem, wherein since respective spread signals output by a spreading system is based on two or more data signals, when using such a spreading system, several separation processes of the data signals must be performed before spreading, but the complexity of the spreading system is increased, when a separation processing operation increases the complexity of the data signal, and a desired operation cannot be attained.
    SOLUTION: A spreading system spreads two data signals. The system produces a filtered signal, based on one of the data signals and an output signal that is based on both of the data signals. In one example, a spreading system is used to perform QPSK spreading of two data signals, the QPSK spreading actually including separation processing of the two data signals. Such a separation control can include a filtering and/or a gain control.
    COPYRIGHT: (C)2011,JPO&INPIT

    Abstract translation: 要解决的问题：为了提供一种解决问题的系统，其中由于由扩展系统输出的各个扩展信号基于两个或更多个数据信号，当使用这种扩展系统时，数据信号的几个分离处理 必须在扩展之前执行，但是当分离处理操作增加数据信号的复杂性时，扩展系统的复杂性增加，并且不能获得期望的操作。 解决方案：扩展系统扩展两个数据信号。 该系统基于数据信号中的一个和基于两个数据信号的输出信号产生滤波信号。 在一个示例中，扩频系统用于执行两个数据信号的QPSK扩展，实际上QPSK扩展包括两个数据信号的分离处理。 这种分离控制可以包括滤波和/或增益控制。 版权所有（C）2011，JPO＆INPIT

    System for direct sequence spreading
    8.
    发明专利
    System for direct sequence spreading 审中-公开
    直接序列扩展系统

    公开(公告)号：JP2007306582A

    公开(公告)日：2007-11-22

    申请号：JP2007140429

    申请日：2007-05-28

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

    Inventor： BUTLER BRIAN K ,  MOHSENI JAFAR M ,  JOHN DEEPU ,  ZHANG HAITAO

    IPC: H04J13/10 ,  H04B1/707 ,  H04B1/7093

    CPC classification number: H04B1/7093 ,  H04B1/707

    Abstract: PROBLEM TO BE SOLVED: To solve the problem that since each spread signal output by a spreading system may be based on more than one data signal, any separate processing of the data signals must be performed before spreading when existing spreading systems are used, but in a case where the separate processing operation increases the complexity of the data signal, the resulting increase in the complexity of the spreading system that may be required may render the desired implementation impracticable.
    SOLUTION: Two data signals are spread. The system produces a filtered signal that is based on one of the data signals and an output signal that is based on both of the data signals. In one example, a spreading system is used to perform QPSK spreading of two data signals, including separate processing of the two data signals, in a practical manner. Such separate control may include filtering and/or gain control.
    COPYRIGHT: (C)2008,JPO&INPIT

    Abstract translation: 解决的问题为了解决由于扩展系统输出的每个扩展信号可以基于多于一个数据信号的问题，在使用现有的扩展系统时必须在扩展之前执行数据信号的任何单独的处理 但是在单独的处理操作增加数据信号的复杂性的情况下，可能需要的扩展系统的复杂性的增加可使得期望的实现变得不可行。 解决方案：两个数据信号传播。 系统产生基于数据信号之一的滤波信号和基于两个数据信号的输出信号。 在一个示例中，扩展系统用于以实用的方式执行两个数据信号的QPSK扩展，包括两个数据信号的单独处理。 这种单独的控制可以包括滤波和/或增益控制。 版权所有（C）2008，JPO＆INPIT

Patent Agency Ranking