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    Method, apparatus and system for medium access control
    43.
    发明专利
    Method, apparatus and system for medium access control 有权
    方法，中等接入控制的装置和系统

    公开(公告)号：JP2010200363A

    公开(公告)日：2010-09-09

    申请号：JP2010106700

    申请日：2010-05-06

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

    Inventor： KETCHUM JOHN W ,  WALLACE MARK S ,  WALTON RODNEY J ,  NANDA SANJIV

    IPC: H04W80/02 ,  H04L12/56 ,  H04L29/06 ,  H04L29/08

    CPC classification number: H04L29/06 ,  H04L69/32 ,  H04L69/324 ,  H04L69/325

    Abstract: PROBLEM TO BE SOLVED: To provide a method, an apparatus and a system for medium access control. SOLUTION: Embodiments adapted to MAC processing for the efficient use of a high throughput system are disclosed. In one embodiment, an apparatus includes a first layer for receiving one or a plurality of packets from one or plurality of data flows and for generating one or a plurality of first layer Protocol Data Units (PDUs) from one or the plurality of packets. In another embodiment, a second layer is arranged for generating one or a plurality of MAC frames on the basis of one or the plurality of MAC layer PDUs. Moreover, in another embodiment, a MAC frame is arranged for transmitting one or a plurality of MAC layer PDUs. The MAC frame may include a control channel for transmitting one or a plurality of allocations. The MAC frame may also include one or a plurality of traffic segments according to allocation. COPYRIGHT: (C)2010,JPO&INPIT

    Abstract translation: 要解决的问题：提供一种用于媒体访问控制的方法，装置和系统。 公开了适用于高效率使用高吞吐量系统的MAC处理的实施例。 在一个实施例中，一种装置包括用于从一个或多个数据流接收一个或多个分组并用于从一个或多个分组生成一个或多个第一层协议数据单元（PDU）的第一层。 在另一个实施例中，第二层被安排用于基于一个或多个MAC层PDU生成一个或多个MAC帧。 此外，在另一个实施例中，布置MAC帧以发送一个或多个MAC层PDU。 MAC帧可以包括用于发送一个或多个分配的控制信道。 MAC帧还可以根据分配包括一个或多个业务段。 版权所有（C）2010，JPO＆INPIT

    Method and device for improving bandwidth efficiency in multiplex input and multiplex output channel
    46.
    发明专利
    Method and device for improving bandwidth efficiency in multiplex input and multiplex output channel 有权
    用于在多路输入和多路输出通道中提高带宽效率的方法和装置

    公开(公告)号：JP2010114940A

    公开(公告)日：2010-05-20

    申请号：JP2010019057

    申请日：2010-01-29

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

    Inventor： KETCHUM JOHN W

    IPC: H03M13/25 ,  H04J99/00 ,  H04B1/707 ,  H04B7/02 ,  H04J1/02 ,  H04J11/00 ,  H04J13/00 ,  H04L1/00

    CPC classification number: H04J13/0048 ,  H04B1/707 ,  H04J13/0077 ,  H04L1/0054 ,  H04L1/006 ,  H04L1/02

    Abstract: PROBLEM TO BE SOLVED: To provide a method and a device for improving bandwidth efficiency in a multiplex input and multiplex output channel. SOLUTION: An input bit stream is supplies to a trellis code block. The trellis code block performs convolutional coding using a code at a rate of 6/7. The output of the trellis code block is modulated using trellis coding orthogonal amplitude modulation to a signal point or a modulation symbol of 128, for example. The modulation symbol sequence thus generated is diversity encoded. The diversity coding is space-time coding or spatial frequency coding. The modulation symbol sequence, that is the diversity encoded modulation symbol sequence is supplied to two or more orthogonal Walsh covers. The diversity can be improved by supplying a replica of the modulation symbol sequence, or the data transmission rate or "throughput" can be improved by demultiplexing of the modulation symbol sequence. The output of the Walsh cover is supplied to a communication channel as separate inputs. COPYRIGHT: (C)2010,JPO&INPIT

    Abstract translation: 要解决的问题：提供一种用于提高复用输入和多路输出通道中的带宽效率的方法和装置。 解决方案：将输入比特流提供给网格码块。 网格码块使用6/7的速率进行卷积编码。 例如，网格码块的输出使用网格编码正交幅度调制被调制到信号点或调制符号128。 这样生成的调制符号序列被分集编码。 分集编码是空时编码或空间频率编码。 调制符号序列，即分集编码调制符号序列被提供给两个或更多个正交沃尔什覆盖。 可以通过提供调制符号序列的副本来改进分集，或者可以通过解调调制符号序列来提高数据传输速率或“吞吐量”。 沃尔什盖的输出作为单独的输入提供给通信通道。 版权所有（C）2010，JPO＆INPIT

    Multiple-access hybrid ofdm-cdma system with frequency-domain spreading
    47.
    发明专利
    Multiple-access hybrid ofdm-cdma system with frequency-domain spreading 审中-公开
    具有频域扩展的多访问混合OFDM-CDMA系统

    公开(公告)号：JP2010016837A

    公开(公告)日：2010-01-21

    申请号：JP2009176266

    申请日：2009-07-29

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

    Inventor： WALTON JAY R ,  KETCHUM JOHN W ,  HOWARD STEVEN J ,  WALLACE MARK

    IPC: H04J11/00 ,  H04B1/692 ,  H04B7/005 ,  H04L5/02 ,  H04W72/04

    CPC classification number: H04W52/12 ,  H04B1/692 ,  H04L5/0021 ,  H04L5/0048 ,  H04L5/026 ,  H04L25/0228 ,  H04L27/0008 ,  H04L27/2607 ,  H04L27/2613 ,  H04L27/2647 ,  H04L27/2655 ,  H04W52/286

    Abstract: PROBLEM TO BE SOLVED: To provide techniques for implementing a multiple-access hybrid OFDM-CDMA system that may be used to provide wireless voice and/or data communications. SOLUTION: In one aspect of a multiple-access OFDM-CDMA system, data spreading is performed in a frequency domain by spreading each data stream with a respective spreading code selected from a set of available spreading codes. To support multiple access, system resources may be allocated and de-allocated to users (e.g., spreading codes may be assigned to users as needed, and transmit power may be allocated to users). Variable rate data for each user may be supported via a combination of spreading adjustment and transmit power scaling. Interference control techniques are also provided to improve system performance via power control of downlink and/or uplink transmissions to achieve the desired level of performance while minimizing interference. A pilot may be transmitted by each transmitter unit to assist the receiver units perform acquisition, timing synchronization, carrier recovery, handoff, channel estimation, coherent data demodulation, and so on. COPYRIGHT: (C)2010,JPO&INPIT

    Abstract translation: 要解决的问题：提供用于实现可用于提供无线语音和/或数据通信的多址混合OFDM-CDMA系统的技术。 解决方案：在多址OFDM-CDMA系统的一个方面，通过用从一组可用的扩展码中选出的相应的扩展码扩展每个数据流，在频域中执行数据扩展。 为了支持多重访问，可以向用户分配和分配系统资源（例如，可以根据需要将扩展​​码分配给用户，并且发送功率可以被分配给用户）。 可以通过扩展调整和发射功率缩放的组合来支持每个用户的可变速率数据。 还提供干扰控制技术以通过下行链路和/或上行链路传输的功率控制来提高系统性能，以实现期望的性能水平同时最小化干扰。 每个发射机单元可以发送导频，以帮助接收机单元执行采集，定时同步，载波恢复，切换，信道估计，相干数据解调等。 版权所有（C）2010，JPO＆INPIT

    Time-domain transmit and receive processing with channel eigen-mode decomposition for mimo systems
    48.
    发明专利
    Time-domain transmit and receive processing with channel eigen-mode decomposition for mimo systems 有权
    用于MIMO系统的信道模式分解的时域发射和接收处理

    公开(公告)号：JP2009189045A

    公开(公告)日：2009-08-20

    申请号：JP2009102926

    申请日：2009-04-21

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

    Inventor： KETCHUM JOHN W ,  WALLACE MARK ,  HOWARD STEVEN J ,  WALTON JAY ROD

    IPC: H04J99/00 ,  H04B7/04 ,  H04L1/00 ,  H04L25/03 ,  H04L27/26

    CPC classification number: H04B7/0417 ,  H04B7/0443 ,  H04L1/0003 ,  H04L1/0009 ,  H04L1/0026 ,  H04L1/0029 ,  H04L25/03343 ,  H04L25/03834 ,  H04L27/2601 ,  H04L27/2647 ,  H04L2025/0349 ,  H04L2025/03605

    Abstract: PROBLEM TO BE SOLVED: To provide time-domain transmit and receive processing using channel eigen-mode decomposition for MIMO systems. SOLUTION: In an aspect, a time-domain implementation is provided which uses frequency-domain singular value decomposition and "water-pouring" results to derive time-domain pulse-shaping and beam-steering solutions at the transmitter and receiver. The singular value decomposition is performed at the transmitter to determine eigen-modes (i.e., spatial subchannels) of the MIMO channel and to derive a first set of steering vectors used to "precondition" modulation symbols. The singular value decomposition is also performed at the receiver to derive a second set of steering vectors used to precondition the received signals, such that orthogonal symbol streams are recovered at the receiver, which can simplify the receiver processing. COPYRIGHT: (C)2009,JPO&INPIT

    Abstract translation: 要解决的问题：使用MIMO系统的信道本征模式分解来提供时域发射和接收处理。 解决方案：在一方面，提供了时域实现，其使用频域奇异值分解和“浇注”结果以在发射机和接收机处导出时域脉冲整形和波束导引解决方案。 在发射机处执行奇异值分解以确定MIMO信道的本征模式（即，空间子信道），并导出用于“调制前缀”调制符号的第一组导引向量。 奇异值分解也在接收机处执行以导出用于预处理接收信号的第二组导引向量，使得在接收机处恢复正交符号流，这可以简化接收机处理。 版权所有（C）2009，JPO＆INPIT

    EFFICIENT FILTER WEIGHT COMPUTATION FOR A MIMO SYSTEM
    50.
    发明公开
    EFFICIENT FILTER WEIGHT COMPUTATION FOR A MIMO SYSTEM 审中-公开
    高效过滤器重量计算的MIMO系统

    公开(公告)号：EP1894329A4

    公开(公告)日：2009-07-29

    申请号：EP06772504

    申请日：2006-06-07

    Applicant: QUALCOMM INC

    Inventor： HOWARD STEVEN J ,  KETCHUM JOHN W ,  WALLACE MARK S ,  MONSEN PETER ,  WALTON JAY RODNEY

    IPC: H04J1/00 ,  H04B7/04 ,  H04B7/08 ,  H04L25/03

    CPC classification number: H04B7/0854 ,  H04B7/0413 ,  H04L25/0246 ,  H04L25/0248 ,  H04L2025/03426 ,  H04L2025/03605 ,  H04L2025/03611

    Abstract: Techniques to efficiently derive a spatial filter matrix are described. In a first scheme, a Hermitian matrix is iteratively derived based on a channel response matrix, and a matrix inversion is indirectly calculated by deriving the Hermitian matrix iteratively. The spatial filter matrix is derived based on the Hermitian matrix and the channel response matrix. In a second scheme, multiple rotations are performed to iteratively obtain first and second matrices for a pseudo-inverse matrix of the channel response matrix. The spatial filter matrix is derived based on the first and second matrices. In a third scheme, a matrix is formed based on the channel response matrix and decomposed to obtain a unitary matrix and a diagonal matrix. The spatial filter matrix is derived based on the unitary matrix, the diagonal matrix, and the channel response matrix.

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