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    METHOD AND APPARATUS FOR BEAMFORMING IN WIRELESS COMMUNICATION SYSTEM
    1.
    发明专利
    METHOD AND APPARATUS FOR BEAMFORMING IN WIRELESS COMMUNICATION SYSTEM 审中-公开

    公开(公告)号：JP2013255236A

    公开(公告)日：2013-12-19

    申请号：JP2013142155

    申请日：2013-07-05

    Applicant: QUALCOMM INC

    Inventor： JALALI AHMAD

    IPC: H04B7/06 ,  H04B7/26 ,  H04B7/10 ,  H04W16/28

    Abstract: PROBLEM TO BE SOLVED: To provide beamforming techniques used to decrease the average interference caused by transmissions of a base station to subscriber stations in neighboring cells, in a CDMA data communication system capable of variable rate transmission.SOLUTION: Base stations 102, 104 utilize various transmit antennas 106, 108 each transmitting signals with controlled phases in order to form transmit signal beams 110, 118, 122 corresponding to individual subscriber stations 112, 116. Data and reference signals are transmitted along beams 110, 118, 122 that change according to fixed time slots and sub-slots in order to minimize carrier-to-interference ratios (C/I) measured at subscriber stations 112, 116.

    Method and apparatus for quick retransmission of signals in communication system
    4.
    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：JP2011205694A

    公开(公告)日：2011-10-13

    申请号：JP2011132636

    申请日：2011-06-14

    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: H04W28/04 ,  H04L1/16 ,  H04L1/18 ,  H04N7/173 ,  H04Q7/38

    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 apparatus for quick retransmission of signals in a communication system.SOLUTION: A transmitting terminal transmits signals in a form of packets to a receiving terminal, if the packet is intended for the receiving terminal, if so, 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 description fails, retransmission in accordance with a conventional sequence-number-based scheme, 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信号，如果是 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。 如果根据描述传送分组失败，则尝试按照常规基于序列号的方案，例如无线电链路协议进行重发。

    Ofdm system with code spreading of signaling data
    5.
    发明专利
    Ofdm system with code spreading of signaling data 审中-公开
    具有信号数据扩展的OFDM系统

    公开(公告)号：JP2011217401A

    公开(公告)日：2011-10-27

    申请号：JP2011147418

    申请日：2011-07-01

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

    Inventor： JALALI AHMAD

    IPC: H04J11/00 ,  H04B1/707 ,  H04B1/7097

    CPC classification number: H04W72/0453 ,  H04L5/0007 ,  H04L5/0053

    Abstract: PROBLEM TO BE SOLVED: To provide an OFDM system where code spreading of signaling data is provided.SOLUTION: Instead of specifically allocating subbands to individual signaling channels, signaling data for a signaling channel on a given link is sent as "under-lay" to other transmissions that may be transmitted on the same link. Each wireless terminal is assigned to different PN codes. The signaling data for each terminal is spectrally spread over all or a portion of the system bandwidth using the assigned PN codes. For a reverse link, a wireless terminal may transmit signaling on all N usable subbands and may transmit traffic data on L subbands assigned for data transmission, which may be a subset of the N usable subbands. For a forward link, a base station may transmit signaling and traffic data for all terminals on the N usable subbands.

    Abstract translation: 要解决的问题：提供一种提供信令数据的码扩展的OFDM系统。解决方案：不是将特定的子带分配给单独的信令信道，而是将给定链路上的信令信道的信令数据作为“下位”发送到 可以在同一链路上传输的其他传输。 每个无线终端分配给不同的PN码。 每个终端的信令数据使用分配的PN码在所有或部分系统带宽上进行频谱扩展。 对于反向链路，无线终端可以在所有N个可用子带上发送信令，并且可以在分配用于数据传输的L个子带上发送业务数据，其可以是N个可用子带的子集。 对于前向链路，基站可以在N个可用子带上为所有终端发送信令和业务数据。

    Method and device for forming beam in radio communication system
    6.
    发明专利
    Method and device for forming beam in radio communication system 有权
    用于在无线电通信系统中形成光束的方法和装置

    公开(公告)号：JP2011055507A

    公开(公告)日：2011-03-17

    申请号：JP2010211223

    申请日：2010-09-21

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

    Inventor： JALALI AHMAD

    IPC: H04B1/7097 ,  H04B7/26 ,  H04B7/06 ,  H04B7/10 ,  H04W16/28

    CPC classification number: H04B7/0617 ,  H04B7/0632

    Abstract: PROBLEM TO BE SOLVED: To provide a method for reducing mutual interference between elements in a system without requiring a large number of minute cells in the data communication system.
    SOLUTION: In a CDMA data communication system capable of variable rate transmission, the usage of a beam formation method reduces average interference caused by the transmission of a base station 104 to a subscriber station 112 in an adjoining cell 124. Base stations 102 and 104 utilize many kinds and a variety of transmission antennas 106 and 108 and transmit signals with controlled phases for forming transmission signal beams 110, 118, and 122 corresponding to subscriber stations 112, 116, and 120, respectively. Data and reference signals are transmitted along the beams 110, 118, and 122 that are changed according to a certain time slot and a sub-slot in order to minimize carrier waves to interference ratios (C/I) measured in the subscriber stations 112, 116, and 120.
    COPYRIGHT: (C)2011,JPO&INPIT

    Abstract translation: 要解决的问题：提供一种用于减少系统中的元件之间的相互干扰而不需要数据通信系统中的大量微小区的方法。 解决方案：在能够进行可变速率传输的CDMA数据通信系统中，波束形成方法的使用减少了由基站104向相邻小区124中的用户站112发送所造成的平均干扰。基站102 并且104利用多种类型和各种发送天线106和108并且发送具有受控相位的信号，以分别形成对应于用户站112,116和120的发射信号波束110,118和122。 数据和参考信号沿着根据特定时隙和子时隙而改变的波束110,118和122被传输，以便最小化在用户站112中测量的载波干扰比（C / I） 116和120.版权所有（C）2011，JPO＆INPIT

    Method and apparatus for transmitting data in time division duplex system
    7.
    发明专利
    Method and apparatus for transmitting data in time division duplex system 审中-公开
    用于在时分双工系统中传输数据的方法和装置

    公开(公告)号：JP2010093822A

    公开(公告)日：2010-04-22

    申请号：JP2009250647

    申请日：2009-10-30

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

    Inventor： JALALI AHMAD ,  SMEE JOHN E ,  WALLACE MARK S

    IPC: H04J11/00 ,  H04B7/04 ,  H04J3/00 ,  H04J15/00 ,  H04J99/00 ,  H04L1/00 ,  H04L1/06 ,  H04L5/22 ,  H04L25/02 ,  H04L25/03 ,  H04Q7/28

    CPC classification number: H04L1/0032 ,  H04B7/0434 ,  H04B7/0626 ,  H04L1/0003 ,  H04L1/0013 ,  H04L1/0026 ,  H04L1/0034 ,  H04L1/06 ,  H04L5/0023 ,  H04L25/0204 ,  H04L25/0224 ,  H04L25/0226 ,  H04L25/03343 ,  H04L27/2647 ,  H04L2025/03414 ,  H04L2025/03426

    Abstract: PROBLEM TO BE SOLVED: To provide techniques to process data for transmission in a time division duplexed (TDD) communication system. SOLUTION: A frequency response of a forward link is estimated in a base station on the basis of reverse link transmissions (e.g., pilots) from a terminal. Prior to a data transmission on the forward link, the base station determines a reverse transfer function on the basis of the pilots transmitted by the terminal, "calibrates" the reverse transfer function with a calibration function to derive an estimate of a forward transfer function, and preconditions modulation symbols on the basis of weights derived from the forward transfer function. In another aspect, the terminal estimates the "quality" of the forward link and provides this information to the base station. The base station then uses the information to properly code and modulate data prior to transmission such that the transmitted data is received by the terminal at the desired level of performance. COPYRIGHT: (C)2010,JPO&INPIT

    Abstract translation: 要解决的问题：提供在时分双工（TDD）通信系统中处理用于传输的数据的技术。 解决方案：基于来自终端的反向链路传输（例如，导频）在基站中估计前向链路的频率响应。 在前向链路上的数据传输之前，基站根据由终端发送的导频确定反向传递功能，用校准功能“校准”反向传递函数，以导出正向传递函数的估计， 并基于从前向传递函数导出的权重来调整前缀条件调制符号。 在另一方面，终端估计前向链路的“质量”，并将该信息提供给基站。 然后，基站使用该信息在发送之前对数据进行适当的编码和调制，使得终端以所需的性能水平接收发送的数据。 版权所有（C）2010，JPO＆INPIT

    Managing traffic in communications system having dissimilar cdma channels
    8.
    发明专利
    Managing traffic in communications system having dissimilar cdma channels 审中-公开
    管理DISSIMILAR CDMA通道的通信系统中的交通管理

    公开(公告)号：JP2010093826A

    公开(公告)日：2010-04-22

    申请号：JP2009253256

    申请日：2009-11-04

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

    Inventor： JALALI AHMAD

    IPC: H04W74/08 ,  H04B1/707 ,  H04J11/00 ,  H04J13/00 ,  H04J13/18 ,  H04L12/24 ,  H04L12/56 ,  H04W28/14 ,  H04W28/22 ,  H04W28/26 ,  H04W72/02 ,  H04W72/04 ,  H04W84/06

    CPC classification number: H04W28/26 ,  H04J13/0048 ,  H04J13/18 ,  H04L41/0896 ,  H04L47/14 ,  H04L47/29 ,  H04L47/70 ,  H04L47/72 ,  H04L47/803 ,  H04L47/822 ,  H04L47/823 ,  H04L47/824 ,  H04L47/826 ,  H04W28/14 ,  H04W28/22 ,  H04W72/02 ,  H04W74/08 ,  H04W84/06

    Abstract: PROBLEM TO BE SOLVED: To provide various schemes of managing communications traffic among the channels in a code division multiple access (CDMA) communications system including one or more terminals (such as customer premise equipments, CPEs) that communicate with a node (such as an Internet gateway) via at least a random access channel and a reservation-oriented channel. SOLUTION: The method involves examining a degree of loading of an output buffer of a given terminal to arrive at a Q-state (302). If the Q-state is greater than the threshold (310), then the method involves assigning to the given terminal, a code designating a reservation-oriented sub-channel; and causing the given terminal to transmit data on the reservation-oriented sub-channel based on orthogonal code division multiple access (OCDMA) (326). If the Q-state is less than the threshold (310), then the method involves causing the given terminal to transmit data on the random access channel based on asynchronous code division multiple access (ACDMA) (330). COPYRIGHT: (C)2010,JPO&INPIT

    Abstract translation: 要解决的问题：提供在包括与节点通信的一个或多个终端（诸如客户驻地设备，CPE）的码分多址（CDMA）通信系统中的信道之间管理通信业务的各种方案（ 例如因特网网关）经由至少一个随机接入信道和一个保留定向信道。 解决方案：该方法涉及检查给定终端的输出缓冲器的负载程度以达到Q状态（302）。 如果Q状态大于阈值（310），则该方法包括向给定终端分配指定面向预留的子信道的代码; 并使得给定终端基于正交码分多址（OCDMA）在面向预约的子信道上发送数据（326）。 如果Q状态小于阈值（310），则该方法涉及使给定终端基于异步码分多址（ACDMA）在随机接入信道上发送数据（330）。 版权所有（C）2010，JPO＆INPIT

    Rate selection for ofdm system
    9.
    发明专利
    Rate selection for ofdm system 有权
    OFDM系统的速率选择

    公开(公告)号：JP2009153158A

    公开(公告)日：2009-07-09

    申请号：JP2009011818

    申请日：2009-01-22

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

    Inventor： JALALI AHMAD ,  FERNANDEZ CORBATON IVAN JESUS

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

    CPC classification number: H04L5/006 ,  H04L1/0002 ,  H04L1/0021 ,  H04L1/0023 ,  H04L1/1819 ,  H04L5/0007 ,  H04L5/0046 ,  Y02D50/10

    Abstract: PROBLEM TO BE SOLVED: To determine a rate for a data transmission in OFDM transmission. SOLUTION: The maximum data rate that may be reliably transmitted over a given multipath channel by OFDM transmission is determined based on a metric for an equivalent channel. As for the given multipath channel and a particular rate, the metric is derived from an equivalent data rate and the particular modulation scheme. A threshold SNR needed reliably to transmit the particular data rate using the particular modulation scheme and coding rate is then determined. The particular rate is deemed as being supported by the multipath channel if the metric is greater than or equal to the threshold SNR. Incremental transmission is used to account for errors in the determined data rate. COPYRIGHT: (C)2009,JPO&INPIT

    Abstract translation: 要解决的问题：确定OFDM传输中数据传输的速率。 解决方案：通过OFDM传输可以在给定的多路径信道上可靠地发送的最大数据速率基于等效信道的度量来确定。 对于给定的多路径信道和特定速率，度量是从等效数据速率和特定调制方案导出的。 然后确定使用特定调制方案和编码速率来可靠地传送特定数据速率的阈值SNR。 如果度量大于或等于阈值SNR，则特定速率被认为是由多径信道支持的。 增量传输用于解决确定的数据速率中的错误。 版权所有（C）2009，JPO＆INPIT

    Method and apparatus for transmitting data in time division duplexed system
    10.
    发明专利
    Method and apparatus for transmitting data in time division duplexed system 有权
    用于在时分双工系统中传输数据的方法和装置

    公开(公告)号：JP2013168956A

    公开(公告)日：2013-08-29

    申请号：JP2013050563

    申请日：2013-03-13

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

    Inventor： JALALI AHMAD ,  ZHENG YI SUMI ,  MARK S WALLACE

    IPC: H04J11/00 ,  H04J99/00 ,  H04J3/00 ,  H04J15/00 ,  H04L1/00 ,  H04L1/06 ,  H04L5/22 ,  H04L25/02 ,  H04L25/03 ,  H04Q7/28

    CPC classification number: H04L1/0032 ,  H04B7/0434 ,  H04B7/0626 ,  H04L1/0003 ,  H04L1/0013 ,  H04L1/0026 ,  H04L1/0034 ,  H04L1/06 ,  H04L5/0023 ,  H04L25/0204 ,  H04L25/0224 ,  H04L25/0226 ,  H04L25/03343 ,  H04L27/2647 ,  H04L2025/03414 ,  H04L2025/03426

    Abstract: PROBLEM TO BE SOLVED: To provide techniques for processing data for transmission in a time division duplexed (TDD) communication system.SOLUTION: The frequency response of a forward link is estimated at a base station on the basis of reverse link transmissions (e.g., pilots) from a terminal. Prior to a data transmission on the forward link, it determines a reverse transfer function on the basis of the pilots transmitted by the terminal, "calibrates" the reverse transfer function with a calibration function to derive an estimate of a forward transfer function, and preconditions modulation symbols on the basis of weights derived from the forward transfer function. In another aspect, the terminal estimates the "quality" of the forward link and provides this information to the base station. The base station then uses the information to properly code and modulate data prior to transmission such that the transmitted data can be received by the terminal at the desired level of performance.

    Abstract translation: 要解决的问题：提供用于处理在时分双工（TDD）通信系统中传输的数据的技术。解决方案：基于反向链路传输（例如，导频）在基站处估计前向链路的频率响应 ）从终端。 在前向链路上的数据传输之前，它根据由终端发送的导频确定反向传递功能，用校准功能“校准”反向传递函数，以导出前向传递函数的估计，以及前提条件 基于从前向传递函数导出的权重的调制符号。 在另一方面，终端估计前向链路的“质量”，并将该信息提供给基站。 然后，基站使用该信息在发送之前对数据进行适当的编码和调制，使得所发送的数据能够以期望的性能水平由终端接收。

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