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    Medium accessing mechanisms within multiple user, multiple access, and/or MIMO wireless communications
    21.
    发明申请
    Medium accessing mechanisms within multiple user, multiple access, and/or MIMO wireless communications 有权
    多用户，多址和/或MIMO无线通信中的媒体接入机制

    公开(公告)号：US20100309872A1

    公开(公告)日：2010-12-09

    申请号：US12821094

    申请日：2010-06-22

    申请人： Peiman Amini ,  Matthew James Fischer ,  Vinko Erceg ,  Joseph Paul Lauer ,  Joonsuk Kim

    发明人： Peiman Amini ,  Matthew James Fischer ,  Vinko Erceg ,  Joseph Paul Lauer ,  Joonsuk Kim

    IPC分类号： H04W72/04 ,  H04W88/06 ,  H04B7/208 ,  H04L12/413

    CPC分类号： H04W74/04 ,  H04L12/413 ,  H04W74/002

    摘要： Medium accessing mechanisms within multiple user, multiple access, and/or MIMO wireless communications. A multi-user super-frame (MU-SF), as controlled by a MU-SF owner, is used to govern the manner by which various wireless communication devices have access to the communication medium. When various wireless communication devices operate within a wireless communication system, communication medium access can be handled differently for wireless communication devices having different capabilities. Per the MU-SF, those having a first capability may get medium access in accordance with a first operational mode (e.g., carrier sense multiple access/collision avoidance (CSMA/CA)), while those having a second capability may get medium access in accordance with a second operational mode (e.g., scheduled access). The respective durations for each of the first operational mode and the second operational mode within various MU-SFs need not be the same; the respective durations thereof may be adaptively modified based on any number considerations.

    摘要翻译： 多用户，多址和/或MIMO无线通信中的媒体接入机制。 由MU-SF所有者控制的多用户超帧（MU-SF）用于控制各种无线通信设备可以访问通信介质的方式。 当各种无线通信设备在无线通信系统内工作时，可以对具有不同能力的无线通信设备对不同的通信介质访问进行处理。 根据MU-SF，具有第一能力的那些可以根据第一操作模式（例如，载波侦听多路访问/冲突避免（CSMA / CA））获得媒体访问，而具有第二能力的那些可以获得媒体访问 根据第二操作模式（例如，预定访问）。 各种MU-SF中的第一操作模式和第二操作模式中的每个的相应持续时间不必相同; 可以基于任何数量考虑来自适应地修改其各自的持续时间。

    Carrier sense multiple access (CSMA) for multiple user, multiple access, and/or MIMO wireless communications
    22.
    发明申请
    Carrier sense multiple access (CSMA) for multiple user, multiple access, and/or MIMO wireless communications 有权
    用于多用户，多址和/或MIMO无线通信的载波侦听多路访问（CSMA）

    公开(公告)号：US20100309779A1

    公开(公告)日：2010-12-09

    申请号：US12816352

    申请日：2010-06-15

    申请人： Peiman Amini ,  Matthew James Fischer ,  Vinko Erceg ,  Joonsuk Kim ,  Joseph Paul Lauer

    发明人： Peiman Amini ,  Matthew James Fischer ,  Vinko Erceg ,  Joonsuk Kim ,  Joseph Paul Lauer

    IPC分类号： H04H20/71 ,  H04L12/26

    CPC分类号： H04L41/0893 ,  H04H20/61 ,  H04H20/72 ,  H04H40/27 ,  H04L43/024

    摘要： Carrier sense multiple access (CSMA) for multiple user, multiple access, and/or MIMO wireless communications. In wireless communication systems that operate in supporting communications via one or more clusters, appropriate determination of when to begin making such transmissions on one or more clusters is made in accordance with intelligent carrier sense multiple access (CSMA) that may be performed in a number of different ways. In accordance with this, a cluster may be any combination composed of one or more channels among one or more bands. In supporting multi-cluster access, CSMA may be performed in selecting a primary cluster and performing backoff (e.g., countdown) thereon. After backoff is finished for the primary cluster, and the availability of one or more others clusters is checked, transmissions may be made using the available clusters. Alternatively, backoff may be made for each or multiple (a subset of) clusters or even individually for each respective cluster.

    摘要翻译： 用于多用户，多址和/或MIMO无线通信的载波侦听多路访问（CSMA）。 在经由一个或多个集群支持通信的操作的无线通信系统中，根据可以在多个集群中执行的智能载波侦听多路访问（CSMA）来适当地确定何时开始在一个或多个集群上进行这样的传输。 不同的方式。 根据这一点，群集可以是由一个或多个频带中的一个或多个频道组成的任何组合。 在支持多集群访问时，可以在选择主集群并在其上执行退避（例如倒计时）时执行CSMA。 对于主集群的退避完成后，检查一个或多个其他集群的可用性，则可以使用可用集群进行传输。 或者，可以针对每个或多个（子集的）簇进行退避，或者甚至针对每个相应的簇进行退避。

    Beamforming feedback frame formats within multiple user, multiple access, and/or MIMO wireless communications
    24.
    发明授权
    Beamforming feedback frame formats within multiple user, multiple access, and/or MIMO wireless communications 有权
    在多用户，多路访问和/或MIMO无线通信范围内成像反馈帧格式

    公开(公告)号：US08576804B2

    公开(公告)日：2013-11-05

    申请号：US12856474

    申请日：2010-08-13

    申请人： Joonsuk Kim ,  Joseph Paul Lauer ,  Vinko Erceg ,  Peiman Amini ,  Matthew James Fischer

    发明人： Joonsuk Kim ,  Joseph Paul Lauer ,  Vinko Erceg ,  Peiman Amini ,  Matthew James Fischer

    IPC分类号： H04W4/00

    CPC分类号： H04B7/063 ,  H04B7/0456 ,  H04B7/0617 ,  H04B7/0619 ,  H04B7/0626 ,  H04B7/0634 ,  H04B7/0645 ,  H04B7/0669 ,  H04L1/0687 ,  H04W4/00

    摘要： Beamforming feedback frame formats within multiple user, multiple access, and/or MIMO wireless communications. A transmitting wireless communication device (TX) transmits a sounding frame to one or more receiving wireless communication devices (RXs) using one or more antennae and one or more clusters. Any antenna/cluster combination may be employed in communications between TXs and RXs. The one or more RXs receive/process the sounding frame to determine a type of beamforming feedback frame to be provided to the TX. Any one of a variety of beamforming feedback frame types and a types of information may be contained within a respective beamforming feedback frame including various characteristics of the respective communication channel between the TX and each of the various RXs. A common beamforming feedback frame format may be supported and employed by all such wireless communication devices (e.g., TX and RXs) when performing MU-MIMO operation such as in accordance with IEEE 802.11ac/VHT.

    摘要翻译： 在多用户，多路访问和/或MIMO无线通信范围内成像反馈帧格式。 发射无线通信设备（TX）使用一个或多个天线和一个或多个簇向一个或多个接收无线通信设备（RX）发送探测帧。 在TX和RX之间的通信中可以采用任何天线/群集组合。 一个或多个RX接收/处理探测帧以确定要提供给TX的波束形成反馈帧的类型。 各种波束形成反馈帧类型和信息类型中的任何一种可以包含在相应的波束成形反馈帧内，包括TX与各个RX之间的各个通信信道的各种特性。 当执行诸如根据IEEE 802.11ac / VHT的MU-MIMO操作时，所有这样的无线通信设备（例如，TX和RX）可以支持和采用公共波束形成反馈帧格式。

    Beamforming feedback frame formats within multiple user, multiple access, and/or MIMO wireless communications
    25.
    发明申请
    Beamforming feedback frame formats within multiple user, multiple access, and/or MIMO wireless communications 有权
    在多用户，多路访问和/或MIMO无线通信范围内成像反馈帧格式

    公开(公告)号：US20110199968A1

    公开(公告)日：2011-08-18

    申请号：US12856474

    申请日：2010-08-13

    申请人： Joonsuk Kim ,  Joseph Paul Lauer ,  Vinko Erceg ,  Peiman Amini ,  Matthew James Fischer

    发明人： Joonsuk Kim ,  Joseph Paul Lauer ,  Vinko Erceg ,  Peiman Amini ,  Matthew James Fischer

    IPC分类号： H04W4/00

    CPC分类号： H04B7/063 ,  H04B7/0456 ,  H04B7/0617 ,  H04B7/0619 ,  H04B7/0626 ,  H04B7/0634 ,  H04B7/0645 ,  H04B7/0669 ,  H04L1/0687 ,  H04W4/00

    摘要： Beamforming feedback frame formats within multiple user, multiple access, and/or MIMO wireless communications. A transmitting wireless communication device (TX) transmits a sounding frame to one or more receiving wireless communication devices (RXs) using one or more antennae and one or more clusters. Any antenna/cluster combination may be employed in communications between TXs and RXs. The one or more RXs receive/process the sounding frame to determine a type of beamforming feedback frame to be provided to the TX. Any one of a variety of beamforming feedback frame types and a types of information may be contained within a respective beamforming feedback frame including various characteristics of the respective communication channel between the TX and each of the various RXs. A common beamforming feedback frame format may be supported and employed by all such wireless communication devices (e.g., TX and RXs) when performing MU-MIMO operation such as in accordance with IEEE 802.11ac/VHT.

    摘要翻译： 在多用户，多路访问和/或MIMO无线通信范围内成像反馈帧格式。 发射无线通信设备（TX）使用一个或多个天线和一个或多个簇向一个或多个接收无线通信设备（RX）发送探测帧。 在TX和RX之间的通信中可以采用任何天线/群集组合。 一个或多个RX接收/处理探测帧以确定要提供给TX的波束形成反馈帧的类型。 各种波束形成反馈帧类型和信息类型中的任何一种可以包含在相应的波束形成反馈帧内，包括TX与各个RX之间的各个通信信道的各种特性。 当执行诸如根据IEEE 802.11ac / VHT的MU-MIMO操作时，所有这样的无线通信设备（例如，TX和RX）可以支持和采用公共波束形成反馈帧格式。

    Scheduled Clear To Send (CTS) for Multiple User, Multiple Access, and/or MIMO Wireless Communications
    26.
    发明申请
    Scheduled Clear To Send (CTS) for Multiple User, Multiple Access, and/or MIMO Wireless Communications 有权
    针对多用户，多路访问和/或MIMO无线通信的计划清除发送（CTS）

    公开(公告)号：US20100309871A1

    公开(公告)日：2010-12-09

    申请号：US12817118

    申请日：2010-06-16

    申请人： Matthew James Fischer ,  Peiman Amini ,  Vinko Erceg ,  Joseph Paul Lauer ,  Joonsuk Kim

    发明人： Matthew James Fischer ,  Peiman Amini ,  Vinko Erceg ,  Joseph Paul Lauer ,  Joonsuk Kim

    IPC分类号： H04W72/00

    CPC分类号： H04L5/0058 ,  H04L5/0023 ,  H04L5/0037 ,  H04L5/006 ,  H04L5/0064 ,  H04L25/0224 ,  H04L25/03343 ,  H04L2025/03802 ,  H04W74/04

    摘要： Scheduled clear to send (CTS) for multiple user, multiple access, and/or MIMO wireless communications. Before sending transmissions, a request to send (RTS)/clear to send (CTS) exchange takes place between a transmitting wireless communication device and multiple receiving wireless communication devices may take place therein. The transmitting wireless communication device (e.g., an AP) may generate and transmit a multi-user request to send (mRTS) frame to a number of receiving wireless communication devices (e.g., STAs). The mRTS frame can include information and instructions therein to direct the manner by which all or a subset of the receiving wireless communication devices are to provide CTS responses back to the transmitting wireless communication device. The mRTS frame may be an OFDMA frame, a MU-MIMO frame, or a combination thereof. The CTS responses may be received in accordance with any one or combination of OFDM signaling, OFDMA signaling, and MU-MIMO signaling.

    摘要翻译： 为多个用户，多路访问和/或MIMO无线通信计划明确发送（CTS）。 在发送传输之前，可以在发送无线通信设备和多个接收无线通信设备之间进行发送（RTS）/清除发送（CTS）交换的请求。 发射无线通信设备（例如，AP）可以生成并向多个接收无线通信设备（例如，STA）发送（mRTS）帧的多用户请求。 mRTS帧可以包括其中的信息和指令，以指导接收无线通信设备的全部或一部分子集将CTS响应提供给发送无线通信设备的方式。 mRTS帧可以是OFDMA帧，MU-MIMO帧或其组合。 可以根据OFDM信令，OFDMA信令和MU-MIMO信令的任何一个或组合来接收CTS响应。

    Maximum likelihood detection for MIMO receivers
    28.
    发明授权
    Maximum likelihood detection for MIMO receivers 失效
    MIMO接收机的最大似然检测

    公开(公告)号：US07542743B2

    公开(公告)日：2009-06-02

    申请号：US11525270

    申请日：2006-09-22

    申请人： Joseph Paul Lauer ,  Joachim S. Hammerschmidt

    发明人： Joseph Paul Lauer ,  Joachim S. Hammerschmidt

    IPC分类号： H04B7/08

    CPC分类号： H04L1/0054 ,  H04L1/06

    摘要： Maximum likelihood detection of signals in a MIMO receiver. A system transformation is obtained by selecting a weighting matrix that when linearly transforming a channel utilized for wireless communication, results in a particular transformed triangular matrix. The weighting matrix is then used to provide a transformed vector for a received signal that allows a search in one constellation. In searching the constellation recursion values are used to calculate the Euclidean distances between set points of the constellation and the location on the constellation corresponding to the received signal for both bit values 0 and 1. Minimum Euclidean distances are determined for bit values 0 and 1 and the difference of the minimum Euclidean distances is used to compute the maximum likelihood value for bits contained in the received signal.

    摘要翻译： MIMO接收机中信号的最大似然检测。 通过选择加权矩阵获得系统变换，该加权矩阵当线性变换用于无线通信的信道时，得到特定的变换三角矩阵。 然后，加权矩阵用于为允许在一个星座中进行搜索的接收信号提供变换矢量。 在搜索星座递归值时，用于计算星座的设定点与位值0和1对应的接收信号对应的星座上的位置之间的欧氏距离。对于位值0和1确定最小欧几里得距离， 使用最小欧几里德距离的差来计算接收信号中包含的位的最大似然值。

    Algebraic construction of LDPC (Low Density Parity Check) codes with corresponding parity check matrix having CSI (Cyclic Shifted Identity) sub-matrices
    29.
    发明授权
    Algebraic construction of LDPC (Low Density Parity Check) codes with corresponding parity check matrix having CSI (Cyclic Shifted Identity) sub-matrices 有权
    具有具有CSI（循环移位身份）子矩阵的相应奇偶校验矩阵的LDPC（低密度奇偶校验）码的代数构造

    公开(公告)号：US07617439B2

    公开(公告)日：2009-11-10

    申请号：US11292135

    申请日：2005-12-01

    申请人： Ba-Zhong Shen ,  Joseph Paul Lauer ,  Christopher J. Hansen ,  Kelly Brian Cameron

    发明人： Ba-Zhong Shen ,  Joseph Paul Lauer ,  Christopher J. Hansen ,  Kelly Brian Cameron

    IPC分类号： H03M13/00

    CPC分类号： H03M13/6362 ,  H03M13/1148 ,  H03M13/1151 ,  H03M13/116 ,  H03M13/1174 ,  H03M13/1177 ,  H03M13/1185 ,  H03M13/1188 ,  H03M13/1515 ,  H03M13/255

    摘要： Algebraic method to construct LDPC (Low Density Parity Check) codes with parity check matrix having CSI (Cyclic Shifted Identity) sub-matrices. A novel approach is presented by which identity sub-matrices undergo cyclic shifting, thereby generating CSI sub-matrices that are arranged forming a parity check matrix of an LDPC code. The parity check matrix of the LDPC code may correspond to a regular LDPC code, or the parity check matrix of the LDPC code may undergo further modification to transform it to that of an irregular LDPC code. The parity check matrix of the LDPC code may be partitioned into 2 sub-matrices such that one of these 2 sub-matrices is transformed to be a block dual diagonal matrix; the other of these 2 sub-matrices may be modified using a variety of means, including the density evolution approach, to ensure the desired bit and check degrees of the irregular LDPC code.

    摘要翻译： 使用具有CSI（循环移位身份）子矩阵的奇偶校验矩阵构造LDPC（低密度奇偶校验）码的代数方法。 提出了一种新颖的方法，其中身份子矩阵经历循环移位，从而产生排列形成LDPC码的奇偶校验矩阵的CSI子矩阵。 LDPC码的奇偶校验矩阵可以对应于常规LDPC码，或者LDPC码的奇偶校验矩阵可以经历进一步修改，以将其转换为不规则LDPC码的奇偶校验矩阵。 LDPC码的奇偶校验矩阵可以被划分为2个子矩阵，使得这2个子矩阵中的一个被变换为块双对角矩阵; 这两个子矩阵中的另一个可以使用包括密度演化方法的各种手段进行修改，以确保不规则LDPC码的期望比特和校正度。