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    SYSTEMS AND METHODS FOR REDUCING UPLINK RESOURCES TO PROVIDE CHANNEL PERFORMANCE FEEDBACK FOR ADJUSTMENT OF DOWNLINK MIMO CHANNEL DATA RATES
    1.
    发明授权
    SYSTEMS AND METHODS FOR REDUCING UPLINK RESOURCES TO PROVIDE CHANNEL PERFORMANCE FEEDBACK FOR ADJUSTMENT OF DOWNLINK MIMO CHANNEL DATA RATES 有权

    公开(公告)号：EP1856832B1

    公开(公告)日：2018-09-05

    申请号：EP06738520.3

    申请日：2006-03-13

    申请人： QUALCOMM INCORPORATED

    发明人： KIM, Byoung-Hoon

    IPC分类号： H04L1/00 ,  H04L1/20

    CPC分类号： H04L1/0656 ,  H04B7/04 ,  H04B7/0632 ,  H04L1/0675

    摘要： Systems and methods for improving the performance of a MIMO wireless communication system by reducing the amount of uplink resources that are needed to provide channel performance feedback for the adjustment of data rates on the downlink MIMO channels. In one embodiment, a method comprises encoding each of a set of data streams according to corresponding data rates, permuting the data streams on a set of MIMO channels according to a full permutation of combinations, transmitting the permuted data streams, receiving the permuted data streams, decoding and determining an SNR for each of the data streams, computing a condensed SNR metric for the set of data streams, providing the condensed metric as feedback, determining a set of individual SNR metrics for the data streams based on the condensed SNR metric, and adjusting the data rates at which the data streams are encoded based on the individual SNR metrics.

    EFFICIENT MIMO TRANSMISSION SCHEMES
    2.
    发明授权
    EFFICIENT MIMO TRANSMISSION SCHEMES 有权
    有效的MIMO传输方案

    公开(公告)号：EP2374252B1

    公开(公告)日：2018-03-28

    申请号：EP09837397.0

    申请日：2009-06-25

    申请人： Marvell World Trade Ltd.

    发明人： PERETS, Yona ,  GOMADAM, Krishna Srikanth ,  ERELL, Adoram ,  YELLIN, Daniel ,  MELZER, Ezer

    IPC分类号： H04L27/00 ,  H04L5/00 ,  H04L1/06 ,  H04B7/04 ,  H04L1/00

    CPC分类号： H04B7/0473 ,  H04L1/0009 ,  H04L1/0656 ,  H04L1/0675 ,  H04L5/0025

    摘要： A method for communication includes, in a transmitter having a first number of transmit antenna ports, setting an upper limit on a second number of spatial layers to be used by the transmitter to be less than the first number. An actual number of the spatial layers, which does not exceed the upper limit, is allocated for transmission to a given receiver. One or more streams of modulated symbols are mapped onto the allocated actual number of the spatial layers. The actual number of the spatial layers are transmitted from the transmitter to the given receiver. A precoding operation maps the spatial layers onto the transmit antenna ports. A first upper limit is set when the precoding operation depends on feedback from the given receiver. A second upper limit, which does not exceed the first upper limit, is set when the precoding operation is not dependent on the feedback.

    TRANSMISSION OF INFORMATION IN A WIRELESS COMMUNICATION SYSTEM
    3.
    发明公开
    TRANSMISSION OF INFORMATION IN A WIRELESS COMMUNICATION SYSTEM 审中-公开
    无线通信系统中的信息传输

    公开(公告)号：EP3249842A1

    公开(公告)日：2017-11-29

    申请号：EP17181007.0

    申请日：2010-08-20

    申请人： BlackBerry Limited

    发明人： XU, Hua ,  HEO, Youn Hyoung ,  CAI, Zhijun ,  EARNSHAW, Mark ,  FONG, Mo-Han ,  MCBEATH, Sean ,  HARRISON, Robert Mark

    IPC分类号： H04L1/16 ,  H04J13/18 ,  H04B7/06 ,  H04L1/00 ,  H04L1/06 ,  H04L5/00 ,  H04L27/26 ,  H04J13/16

    CPC分类号： H04L1/0668 ,  H04B1/69 ,  H04B7/0678 ,  H04J13/0077 ,  H04J13/18 ,  H04J2013/165 ,  H04J2211/005 ,  H04L1/0009 ,  H04L1/0618 ,  H04L1/0675 ,  H04L1/1671 ,  H04L5/0007 ,  H04L5/0026 ,  H04L5/003 ,  H04L5/0053 ,  H04L5/0094 ,  H04L27/2602 ,  H04W72/0406 ,  H04W72/0413

    摘要： Methods, devices, and computer-readable storage mediums for the transmission of information in a wireless communication system are disclosed. In one embodiment, a method for operating a user equipment in a wireless communication system comprises detecting a downlink control channel, wherein the downlink control channel includes a first control channel element; determining a first index using the location of the first control channel element; determining a second index (710b) based on the first index; determining a first indicator of a first orthogonal resource using the first index (710a); determining a second indicator of a second orthogonal resource based on the second index; spreading an uplink message using the first orthogonal resource to form a first spread signal; spreading the uplink message using a second orthogonal resource to form a second spread signal; transmitting the first spread signal using a first antenna; transmitting the second spread signal using a second antenna; and performing a random access procedure using single antenna transmission.

    摘要翻译： 公开了用于在无线通信系统中传输信息的方法，设备和计算机可读存储介质。 在一个实施例中，一种用于在无线通信系统中操作用户设备的方法包括：检测下行链路控制信道，其中，所述下行链路控制信道包括第一控制信道元素; 使用第一控制信道单元的位置确定第一索引; 基于第一索引确定第二索引（710b） 使用第一索引（710a）确定第一正交资源的第一指示符; 基于第二索引确定第二正交资源的第二指示符; 使用所述第一正交资源扩展上行链路消息以形成第一扩频信号; 使用第二正交资源扩展上行链路消息以形成第二扩展信号; 使用第一天线发送第一扩展信号; 使用第二天线发射第二扩展信号; 并使用单天线传输执行随机接入过程。

    Method and apparatus for adaptive time diversity and spatial diversity for OFDM
    7.
    发明公开
    Method and apparatus for adaptive time diversity and spatial diversity for OFDM 有权
    Verfahren und Vorrichtung zur adaptivenRaumdiversitätundZeitdiversitätfürOFDM

    公开(公告)号：EP2299606A2

    公开(公告)日：2011-03-23

    申请号：EP10184429.8

    申请日：2001-08-21

    申请人： Nortel Networks Limited

    发明人： Wu, Shiquan ,  TONG, Wen ,  Strawczynski, Leo

    IPC分类号： H04B7/06 ,  H04L1/06 ,  H04L27/26

    CPC分类号： H04B7/068 ,  H04B7/0417 ,  H04B7/063 ,  H04B7/0669 ,  H04B7/0689 ,  H04B7/0697 ,  H04B7/0891 ,  H04L1/0001 ,  H04L1/0003 ,  H04L1/0009 ,  H04L1/0025 ,  H04L1/0026 ,  H04L1/0625 ,  H04L1/0631 ,  H04L1/0662 ,  H04L1/0675 ,  H04L5/0007 ,  H04L5/0023 ,  H04L5/0025 ,  H04L5/0026 ,  H04L5/0046 ,  H04L5/006 ,  H04L27/0008 ,  H04L27/2604 ,  H04L27/2628 ,  H04L27/2646 ,  H04L27/2647

    摘要： An apparatus for transmitting data, comprising: an orthogonal frequency division multiplexing (OFDM) encoder for loading: a first data on a sub-carrier of an OFDM symbol associated with a first antenna; a second data on a sub-carrier of an another OFDM symbol associated with the first antenna; said first and said second data on sub-carriers of OFDM symbols being associated with a second antenna according to at least one mapping rule, wherein said at least one mapping rule is a conjugate mapping rule; said first antenna transmits said first data; said first antenna transmits said second data; and said second antenna transmits said first and said second data; wherein said transmission of said first data with said second antenna is transmitted subsequent to said transmission of said first data with said first antenna; and said transmission of said second data with said first antenna is transmitted subsequent to said transmission of said second data with said second antenna.

    摘要翻译： 一种用于发送数据的装置，包括：正交频分复用（OFDM）编码器，用于加载：与第一天线相关联的OFDM符号的子载波上的第一数据; 与第一天线相关联的另一OFDM符号的子载波上的第二数据; 根据至少一个映射规则，所述第一和所述OFDM符号子载波的第二数据与第二天线相关联，其中所述至少一个映射规则是共轭映射规则; 所述第一天线发送所述第一数据; 所述第一天线发送所述第二数据; 并且所述第二天线发送所述第一和所述第二数据; 其中在用所述第一天线发送所述第一数据之后传输所述第一数据与所述第二天线的传输; 并且在用所述第二天线发送所述第二数据之后，传输所述第二数据与所述第一天线的传输。

    Assigning selected interlace mode in wireless communication systems
    8.
    发明公开
    Assigning selected interlace mode in wireless communication systems 审中-公开
    Zuweisen einesgewähltenInterlace-Modus in drahtlosen Kommunikationssystemen

    公开(公告)号：EP2205034A2

    公开(公告)日：2010-07-07

    申请号：EP10161074.9

    申请日：2006-10-27

    申请人： Qualcomm Incorporated

    发明人： Prakash, Rajat ,  Khandekar, Aamod ,  Gorokhov, Alexei

    IPC分类号： H04W72/04

    CPC分类号： H04W52/0235 ,  H04B17/318 ,  H04B17/382 ,  H04L1/0003 ,  H04L1/0026 ,  H04L1/0028 ,  H04L1/0675 ,  H04L27/2647 ,  H04L41/0803 ,  H04L41/083 ,  H04L41/0869 ,  H04W24/10 ,  H04W88/02 ,  Y02D30/32 ,  Y02D70/1222 ,  Y02D70/1224 ,  Y02D70/1242 ,  Y02D70/142 ,  Y02D70/144 ,  Y02D70/146 ,  Y02D70/162

    摘要： A method of assigning selected interlace mode, the method comprising:
    generating a SelectedlnterlaceAssignment message comprising at least an 8 bit Message ID field, a 12 bit PilotPN field, a 1 bit SelectedlnterlacesEnabled field, a 4 bit NumAssignedInterlaces field, and a 3 bit InterlaceID field, wherein, the PilotPN field is set to a PilotPN of the sector that sends SelectedInterlace Assignment message, the NumAssignedInterlaccs field is set to a number of assigned interlaces, the InterlaceID field is set to an interlace assigned to an access terminal for SelectedInterlace operation; and transmitting the SelectedInterlaceAssignment message over a communication link.

    摘要翻译： 一种分配选择的隔行扫描模式的方法，所述方法包括：产生一个选择的标记分配消息，该消息包括至少8位消息ID字段，12位PilotPN字段，1位SelectedInterlacesEnabled字段，4位NumAssignedInterlaces字段和3位InterlaceID字段 其中，PilotPN字段被设置为发送SelectedInterlace Assignment消息的扇区的PilotPN，将NumAssignedInterlaccs字段设置为多个被分配的交织，将InterlaceID字段设置为分配给用于SelectedInterlace操作的接入终端的交织; 以及通过通信链路发送SelectedInterlaceAssignment消息。

    A 4x2 SFBC/STBC system with 2 spatial streams using angle feedback
    9.
    发明公开
    A 4x2 SFBC/STBC system with 2 spatial streams using angle feedback 审中-公开
    方法和使用反馈相位信息为4×2 STBC信号的自适应传输装置

    公开(公告)号：EP2184898A1

    公开(公告)日：2010-05-12

    申请号：EP09013907.2

    申请日：2009-11-05

    申请人： Broadcom Corporation

    发明人： Kim, Joonsuk

    IPC分类号： H04L25/02 ,  H04L25/03 ,  H04L1/06

    CPC分类号： H04L25/0204 ,  H04L1/0606 ,  H04L1/0662 ,  H04L1/0675 ,  H04L25/03343 ,  H04L2025/03414 ,  H04L2025/03426

    摘要： Aspects of a method and system for a 4x2 SFBC/STBC system with 2 spatial streams using angle feedback are presented. Aspects of the system include a 4x2 SFBC/STBC communication diversity system with 2 distinct spatial streams using angle feedback. A receiving station may concurrently receive signals. A channel estimate matrix may be computed based on the received signals. A rotation angle value may be computed based on the channel estimate matrix. The receiving station may transmit the computed rotation angle via feedback information to a transmitting station. The transmitting station may utilize the received feedback information to generate a plurality of 4 distinct transmit chain signals based on data symbols received via a plurality of 2 spatial streams. Each of the distinct transmit chain signals may comprise a plurality of codewords. The transmitting station may concurrently transmit the plurality of transmit chain signals via the plurality of transmitting antennas.

    摘要翻译： 为4×2 SFBC / STBC系统使用角反馈2个空间流的方法和系统的各方面被呈现。 该系统的各方面包括使用角反馈两个不同的空间流4×2 SFBC / STBC通信分集系统。 接收站可以同时接收信号。 信道估计矩阵，可以基于所接收的信号来计算。 的旋转角的值可以基于信道估计矩阵来计算。 接收站可以通过反馈信息计算的旋转角度发送到发送站。 发射站使用接收的反馈信息来生成的基于经由的2个空间流接收到的多个数据码元，4个不同的发射链信号的多个。 每个不同的发射链信号可以包括码字的多元性。 发射站可以经由发射天线的多个同时发送的发射链信号的多元性。