Space-Time-Frequency Sensing of RF Spectrum in Cognitive Radios
    11.
    发明申请
    Space-Time-Frequency Sensing of RF Spectrum in Cognitive Radios 失效
    认知无线电射频频谱的时空频率检测

    公开(公告)号:US20080166974A1

    公开(公告)日:2008-07-10

    申请号:US11620759

    申请日:2007-01-08

    IPC分类号: H04B17/00

    摘要: A method detects unused frequency bands in a cognitive radio network. Multiple frequency bands for RF signals are sensed using an antenna array including a plurality of elements coupled to a receive RF chain, in which the plurality of elements are individually controllable. For each frequency band, multiple spatial directions are sensed for the RF signals using the antenna array. A particular frequency band and a particular direction and a particular time slot are assigned as an available frequency band, an available direction and a particular time slot for transmitting RF signals in a cognitive radio if the RF signals are not sensed in the particular spatial direction for the particular frequency band, and in which the RF signals are transmitted by a transmit chain connected to the antenna array.

    摘要翻译: 一种方法检测认知无线电网络中的未使用频带。 使用包括耦合到接收RF链的多个元件的天线阵列感测用于RF信号的多个频带,其中多个元件可单独地控制。 对于每个频带,使用天线阵列检测RF信号的多个空间方向。 如果在特定空间方向上没有感测到RF信号,则将特定频带和特定方向以及特定时隙分配为可用频带,可用方向和用于在认知无线电中发送RF信号的特定时隙 特定频带,并且其中通过连接到天线阵列的发射链发射RF信号。

    System and method for transmitting signals in cooperative base station multi-user MIMO networks
    12.
    发明申请
    System and method for transmitting signals in cooperative base station multi-user MIMO networks 有权
    在合作基站多用户MIMO网络中传输信号的系统和方法

    公开(公告)号:US20070248172A1

    公开(公告)日:2007-10-25

    申请号:US11408284

    申请日:2006-04-20

    IPC分类号: H04K1/10

    CPC分类号: H04B7/024

    摘要: A method transmits and receives signals in a cooperative, multi-user, multi-input, multi-output network. The network includes base stations (BSs) and mobile stations (MSs). Each BS has at least two antennas, and each MS has at least one antenna. At a first base station and a second base station using linear pre-coding matrices, a plurality of data streams are jointly pre-coded to produce first signals and second signals. The first signals are transmitted synchronously from the first BS and the second BS to a first MS, and the second signals are transmitted synchronously from the first BS and the second BS to a second MS, and in the first signal and the second signal are asynchronous with respect each other.

    摘要翻译: 一种方法是在合作,多用户,多输入,多输出网络中发送和接收信号。 网络包括基站(BS)和移动站(MS)。 每个BS具有至少两个天线,并且每个MS具有至少一个天线。 在使用线性预编码矩阵的第一基站和第二基站处,多个数据流被联合预编码以产生第一信号和第二信号。 第一信号从第一BS和第二BS同步发送到第一MS,并且第二信号从第一BS和第二BS同步发送到第二MS,并且在第一信号和第二信号是异步的 相互尊重

    Space-time-frequency sensing of RF spectrum in cognitive radios
    13.
    发明授权
    Space-time-frequency sensing of RF spectrum in cognitive radios 失效
    认知无线电中RF频谱的空时频率感知

    公开(公告)号:US07610036B2

    公开(公告)日:2009-10-27

    申请号:US11620759

    申请日:2007-01-08

    IPC分类号: H04B17/00 H04W72/00

    摘要: A method detects unused frequency bands in a cognitive radio network. Multiple frequency bands for RF signals are sensed using an antenna array including a plurality of elements coupled to a receive RF chain, in which the plurality of elements are individually controllable. For each frequency band, multiple spatial directions are sensed for the RF signals using the antenna array. A particular frequency band and a particular direction and a particular time slot are assigned as an available frequency band, an available direction and a particular time slot for transmitting RF signals in a cognitive radio if the RF signals are not sensed in the particular spatial direction for the particular frequency band, and in which the RF signals are transmitted by a transmit chain connected to the antenna array.

    摘要翻译: 一种方法检测认知无线电网络中的未使用频带。 使用包括耦合到接收RF链的多个元件的天线阵列感测用于RF信号的多个频带,其中多个元件可单独地控制。 对于每个频带,使用天线阵列检测RF信号的多个空间方向。 如果在特定空间方向上没有感测到RF信号,则将特定频带和特定方向以及特定时隙分配为可用频带,可用方向和用于在认知无线电中发送RF信号的特定时隙 特定频带,并且其中通过连接到天线阵列的发射链发射RF信号。

    Antenna selection with RF imbalance
    14.
    发明申请
    Antenna selection with RF imbalance 有权
    天线选择与RF不平衡

    公开(公告)号:US20070224943A1

    公开(公告)日:2007-09-27

    申请号:US11387252

    申请日:2006-03-23

    IPC分类号: H04B1/02 H04B7/00 H04M1/00

    摘要: A method for selecting antennas in a multiple-input, multiple-output wireless communications network that includes multiple stations is presented. Each station includes a set of transmit RF chains and a set of receive RF chains, and each RF chain is connectable to a set of antennas. A first station transmits a training frame for each possible subset of the set of antennas, and the set of transmit RF chains are connected to the subset of antennas according to a connection mapping rule while transmitting each training frame. A subchannel matrix is estimated in a second station for each frame. The subchannel matrices are combined to obtain a complete channel matrix. A particular subset of the antennas is selected according to the complete channel matrix. The set of transmit RF chains is connected to the selected particular subset of antennas to transmit data from the first station to the second station.

    摘要翻译: 提出了一种在包含多个站的多输入,多输出无线通信网络中选择天线的方法。 每个站包括一组发射RF链和一组接收RF链,并且每个RF链可连接到一组天线。 第一台站发送针对该组天线的每个可能子集的训练帧,并且该组发射RF链根据连接映射规则连接到天线子集,同时传输每个训练帧。 在每个帧的第二站中估计子信道矩阵。 子信道矩阵被组合以获得完整的信道矩阵。 根据完整的信道矩阵来选择天线的特定子集。 发射RF链的集合被连接到所选择的特定天线子集,以将数据从第一站传送到第二站。

    Short packet for use in beamforming
    15.
    发明授权
    Short packet for use in beamforming 有权
    用于波束成形的短包

    公开(公告)号:US09219576B2

    公开(公告)日:2015-12-22

    申请号:US12876758

    申请日:2010-09-07

    摘要: A method for generating a beamforming training (BFT) unit includes generating a physical layer (PHY) preamble of the BFT unit and generating a first encoding block and a second encoding block using PHY data and MAC data, including at least one of i) using a number of padding bits in a PHY layer of the BFT unit such that the BFT unit consists of the PHY preamble, the first encoding block, and the second encoding block, and ii) generating a MAC protocol data unit (MPDU) having a length such that the BFT unit consists of the PHY preamble, the first encoding block, and the second encoding block.

    摘要翻译: 一种用于生成波束形成训练(BFT)单元的方法包括:生成BFT单元的物理层(PHY)前导码并使用PHY数据和MAC数据生成第一编码块和第二编码块,包括以下各项中的至少一个:i)使用 BFT单元的PHY层中的多个填充比特,使得BFT单元由PHY前导码,第一编码块和第二编码块组成,以及ii)生成具有长度的MAC协议数据单元(MPDU) 使得BFT单元由PHY前导码,第一编码块和第二编码块组成。

    PHYSICAL LAYER FRAME FORMAT FOR LONG RANGE WLAN
    16.
    发明申请
    PHYSICAL LAYER FRAME FORMAT FOR LONG RANGE WLAN 审中-公开
    长距离WLAN的物理层框架格式

    公开(公告)号:US20150350950A1

    公开(公告)日:2015-12-03

    申请号:US14518846

    申请日:2014-10-20

    IPC分类号: H04W28/06 H04L27/26 H04L29/06

    摘要: In a method for generating a physical layer (PHY) data unit for transmission via a communication channel, the PHY data unit is generated according to a first PHY format when the PHY data unit is to be transmitted in a regular mode, wherein the first PHY format corresponds to a first bandwidth. The PHY data unit is generated according to a second PHY format when the PHY data unit is to be transmitted in an extended range mode, wherein the second PHY format corresponds to a second bandwidth. A preamble of the PHY data unit is modulated such that a receiving device can auto-detect whether the PHY data unit was transmitted at the first bandwidth or the second bandwidth.

    摘要翻译: 在用于生成经由通信信道传输的物理层(PHY)数据单元的方法中,当PHY数据单元将以常规模式发送时,根据第一PHY格式生成PHY数据单元,其中第一PHY 格式对应于第一带宽。 当要在扩展范围模式中发送PHY数据单元时,根据第二PHY格式生成PHY数据单元,其中第二PHY格式对应于第二带宽。 对PHY数据单元的前导码进行调制,使得接收设备可以自动检测PHY数据单元是否以第一带宽或第二带宽发送。

    Stream parsing in a communication system
    17.
    发明授权
    Stream parsing in a communication system 有权
    在通信系统中进行流解析

    公开(公告)号:US09178651B2

    公开(公告)日:2015-11-03

    申请号:US13231670

    申请日:2011-09-13

    IPC分类号: H04L1/00 H04L1/06

    摘要: In a method for parsing data in a data unit into a number of spatial streams, a modulation and coding scheme (MCS) is selected from a plurality of MCSs. Information bits are encoded using one or more encoders to generate coded bits, wherein the number of encoders used depends on the selected MCS. The coded bits into a number of spatial streams according to a first set of parsing rules if the coded bits satisfy a parsing constraint. The coded bits are parsed into the number of spatial streams according to a second set of parsing rules if the coded bits do not satisfy the parsing constraint.

    摘要翻译: 在将数据单元中的数据解析为多个空间流的方法中,从多个MCS中选择调制和编码方案(MCS)。 使用一个或多个编码器对信息比特进行编码以产生编码比特,其中使用的编码器数量取决于所选择的MCS。 如果编码比特满足解析约束,则根据第一组解析规则将编码比特转换成多个空间流。 如果编码比特不满足解析约束,则编码比特根据第二组解析规则解析为空间流数。

    Control data unit format for WLAN
    18.
    发明授权
    Control data unit format for WLAN 有权
    控制WLAN的数据单元格式

    公开(公告)号:US09131399B2

    公开(公告)日:2015-09-08

    申请号:US13586698

    申请日:2012-08-15

    摘要: In a method for generating a control data unit a physical layer (PHY) preamble of the control data unit is generated. In generating the PHY preamble, an address field is generated to indicate a communication device for which the data unit is intended, and a frame type field is generated to indicate a type of the control data unit. The address field and the frame type field are included in the PHY preamble. The control data unit is generated to include the PHY preamble. The control data unit is transmitted. The control data unit omits (i) a MAC header, and (iii) a payload.

    摘要翻译: 在产生控制数据单元的方法中,生成控制数据单元的物理层(PHY)前置码。 在生成PHY前导码时,生成地址字段以指示数据单元预期的通信设备,并且生成帧类型字段以指示控制数据单元的类型。 地址字段和帧类型字段包括在PHY前导码中。 生成控制数据单元以包括PHY前导码。 发送控制数据单元。 控制数据单元省略(i)MAC报头,和(iii)有效载荷。

    Reuse of a matrix equalizer for the purpose of transmit beamforming in a wireless MIMO communication system
    19.
    发明授权
    Reuse of a matrix equalizer for the purpose of transmit beamforming in a wireless MIMO communication system 有权
    在无线MIMO通信系统中为了发射波束成形的目的重用矩阵均衡器

    公开(公告)号:US09106295B1

    公开(公告)日:2015-08-11

    申请号:US13550298

    申请日:2012-07-16

    IPC分类号: H04B7/00 H04B7/06 H04L25/03

    摘要: An equalizer is applied to a signal to be transmitted via at least one multiple input, multiple output (MIMO) channel or received via at least one MIMO channel using a matrix equalizer computational device. Channel state information (CSI) is received, and the CSI is provided as an input to the matrix equalizer computational device when the matrix equalizer computational device is not needed for matrix equalization. One or more transmit beamsteering codewords are selected from a transmit beamsteering codebook based on output generated by the matrix equalizer computational device in response to the CSI input to the matrix equalizer computational device.

    摘要翻译: 均衡器被应用于要经由至少一个多输入多输出(MIMO)信道发射的信号或者通过使用矩阵均衡器计算设备经由至少一个MIMO信道接收的信号。 当矩阵均衡器计算设备不需要用于矩阵均衡时,接收到信道状态信息(CSI),并且将CSI作为矩阵均衡器计算设备的输入提供。 响应于对矩阵均衡器计算装置的CSI输入,基于由矩阵均衡器计算装置产生的输出,从发射波束导向码本中选择一个或多个发射波束引导码字。

    Signal field design for WLAN
    20.
    发明授权
    Signal field design for WLAN 有权
    WLAN的信号场设计

    公开(公告)号:US09078169B2

    公开(公告)日:2015-07-07

    申请号:US13587681

    申请日:2012-08-16

    摘要: A method of generating packets for transmission in a wireless communication system, wherein each packet includes a SIG field that includes a first SIG subfield, includes generating a data packet and a null data packet. Generating the data packet includes generating information bits of the first SIG subfield of the data packet and generating the data portion of the data packet. The information bits of the first SIG subfield of the data packet indicate, to a receiving device, a length corresponding to a data portion of the data packet. Generating the null data packet includes generating information bits of the first SIG subfield of the null data packet. The information bits of the first SIG subfield of the null data packet indicate, to a receiving device, a first physical layer (PHY) parameter value associated with the null data packet. The first PHY parameter value is not a length value.

    摘要翻译: 一种在无线通信系统中生成用于发送的分组的方法,其中每个分组包括包括第一SIG子字段的SIG字段,包括生成数据分组和空数据分组。 产生数据分组包括生成数据分组的第一SIG子字段的信息比特并生成数据分组的数据部分。 数据分组的第一SIG子字段的信息比特向接收设备指示对应于数据分组的数据部分的长度。 生成空数据分组包括产生空数据分组的第一SIG子字段的信息比特。 空数据分组的第一SIG子字段的信息位向接收设备指示与空数据分组相关联的第一物理层(PHY)参数值。 第一个PHY参数值不是长度值。