Low bandwidth PHY for WLAN
    112.
    发明授权
    Low bandwidth PHY for WLAN 有权
    WLAN的低带宽PHY

    公开(公告)号:US08891435B2

    公开(公告)日:2014-11-18

    申请号:US13494515

    申请日:2012-06-12

    摘要: A method includes generating first and second preambles for first and second data units corresponding to first and second PHY modes, respectively. Generating the first preamble includes generating a first STF, LTF, and SIG field. The first SIG field includes an OFDM symbol modulated according to a first modulation technique. The OFDM symbol begins a first time interval, and ends a second time interval, after the first LTF begins. Generating the second preamble includes generating a second STF and LTF. The second STF has a greater duration, and different repeating sequence, than the first STF. The second LTF includes a second OFDM symbol modulated according to a second modulation technique, and at least partially occupying a location beginning a third time interval, and ending a fourth time interval, after the second LTF begins. The third and fourth time intervals are equal to the first and second time intervals, respectively.

    摘要翻译: 一种方法包括分别为对应于第一和第二PHY模式的第一和第二数据单元生成第一和第二前导码。 生成第一前同步码包括生成第一STF,LTF和SIG字段。 第一SIG字段包括根据第一调制技术调制的OFDM符号。 OFDM符号开始第一时间间隔,并且在第一LTF开始之后结束第二时间间隔。 生成第二前导码包括生成第二STF和LTF。 第二STF具有比第一STF更长的持续时间和不同的重复序列。 第二LTF包括根据第二调制技术调制的第二OFDM符号,并且至少部分地占据从第三时间间隔开始的位置,并且在第二LTF开始之后结束第四时间间隔。 第三和第四时间间隔分别等于第一和第二时间间隔。

    Method and apparatus for processing a preamble of a packet
    113.
    发明授权
    Method and apparatus for processing a preamble of a packet 有权
    用于处理分组的前同步码的方法和装置

    公开(公告)号:US08885669B2

    公开(公告)日:2014-11-11

    申请号:US13456941

    申请日:2012-04-26

    摘要: A method for processing a preamble of a data packet, received via a communication channel, using a pair of complementary sequences, wherein a sum of out-of-phase aperiodic autocorrelation coefficients of the pair of complementary sequences is zero, and wherein the preamble includes a first field that provides synchronization information and a second field that provides channel estimation information, includes at least one of (i) correlating a received signal corresponding to the preamble with at least one sequence of the pair of complementary sequences to generate a plurality of respective correlation signals, or (ii) autocorrelating the received signal to generate an autocorrelation signal. The method also includes determining a cover code in the preamble using at least one of (i) the plurality of respective correlation signals, or (ii) the autocorrelation signal. The method also includes using the cover code to decode the preamble.

    摘要翻译: 一种用于处理经由通信信道,使用一对互补序列接收的数据分组的前导码的方法,其中所述一对互补序列的异相非周期自相关系数的和为零,并且其中所述前同步码包括 提供同步信息的第一场和提供信道估计信息的第二场包括以下中的至少一个:(i)将与所述前同步码相对应的接收信号与所述一对互补序列中的至少一个序列相关联以产生多个相应的 相关信号,或(ii)自动相关接收的信号以产生自相关信号。 该方法还包括使用(i)多个相关相关信号或(ii)自相关信号中的至少一个来确定前导码中的覆盖码。 该方法还包括使用覆盖码来解码前导码。

    WLAN channel allocation
    116.
    发明授权
    WLAN channel allocation 有权
    WLAN信道分配

    公开(公告)号:US08867481B2

    公开(公告)日:2014-10-21

    申请号:US13369102

    申请日:2012-02-08

    IPC分类号: H04W4/00 H04W72/04

    CPC分类号: H04W72/044 H04W72/0453

    摘要: In a method available frequency band for communication is determined and a frequency fc of a carrier is determined based on the available frequency band. The carrier is set to the frequency fc for communicating with one or more communication devices via a first communication channel within the available frequency band using. After communicating via the first communication channel, the carrier frequency fc is used for communicating with one or more communication devices via a second communication channel within the available bandwidth. A center frequency of the first channel is different than a center frequency of the second channel.

    摘要翻译: 在方法中确定用于通信的可用频带,并且基于可用频带确定载波的频率fc。 载波被设置为频率fc,用于经由可用频带内的第一通信信道与一个或多个通信设备进行通信。 在通过第一通信信道进行通信之后,载波频率fc用于经由可用带宽内的第二通信信道与一个或多个通信设备通信。 第一通道的中心频率不同于第二通道的中心频率。

    Multi-user communication group management and signaling
    117.
    发明授权
    Multi-user communication group management and signaling 有权
    多用户通信组管理和信令

    公开(公告)号:US08855067B2

    公开(公告)日:2014-10-07

    申请号:US13077623

    申请日:2011-03-31

    摘要: Systems and techniques relating to wireless communications are described. A described technique includes generating one or more assignment records for a wireless communication device, generating an assignment message that includes the one or more generated assignment records, and transmitting the assignment message to cause the wireless communication device to initialize or update a multi-user group table based on the assignment message and filter one or more received multi-user transmissions based on the multi-user group table. The assignment message can indicate one or more group identifiers and one or more group member identifiers that are assigned to the wireless communication device and one or more group identifiers that are not assigned to the wireless communication device.

    摘要翻译: 描述与无线通信相关的系统和技术。 所描述的技术包括为无线通信设备生成一个或多个分配记录,生成包括所述一个或多个生成的分配记录的分配消息,以及发送分配消息,以使无线通信设备初始化或更新多用户组 基于分配消息的表,并且基于多用户组表过滤一个或多个接收的多用户传输。 分配消息可以指示分配给无线通信设备的一个或多个组标识符和一个或多个组成员标识符以及未分配给无线通信设备的一个或多个组标识符。

    Multi-radio device for WLAN
    118.
    发明授权
    Multi-radio device for WLAN 有权
    WLAN无线电设备

    公开(公告)号:US08773969B1

    公开(公告)日:2014-07-08

    申请号:US12731007

    申请日:2010-03-24

    IPC分类号: H04J11/00

    摘要: The present disclosure includes systems and techniques relating to wireless local area network devices. Systems and techniques include multiplexing information for a single wireless communication device onto multiple radio pathways to produce a data packet, operating the multiple radio pathways to generate different portions of the data packet, and transmitting the data packet to the single wireless communication device by concurrent transmissions of the different portions of the data packet over different wireless channels.

    摘要翻译: 本公开包括与无线局域网设备有关的系统和技术。 系统和技术包括将用于单个无线通信设备的信息复用到多个无线电路径上以产生数据分组,操作多个无线电路径以生成数据分组的不同部分,以及通过并发传输将数据分组发送到单个无线通信设备 在不同的无线信道上的数据分组的不同部分。

    Compressed feedback format for WLAN
    119.
    发明授权
    Compressed feedback format for WLAN 有权
    WLAN的压缩反馈格式

    公开(公告)号:US08731090B2

    公开(公告)日:2014-05-20

    申请号:US13252710

    申请日:2011-10-04

    IPC分类号: H04B7/02

    摘要: In a method for transmitting channel feedback data from a receiver to a transmitter, channel data for a plurality of orthogonal frequency division multiplexing (OFDM) tones for one or more spatial streams corresponding to a communication channel is determined. A plurality of angle values associated with the one or more spatial streams and one or more OFDM tones is determined. For each of the one or more spatial streams, a per-tone signal to noise ratio (PT-SNR) associated with one or more OFDM tones is determined, and an average signal to noise ratio (avg-SNR) is determined by averaging the signal to noise ratio (SNR) values. A feedback report is generated to include at least i) the plurality of angle values, ii) the PT-SNRs, and iii) the avg-SNR. The feedback report is included in a data unit to be transmitted from the receiver to the transmitter.

    摘要翻译: 在从接收机向发射机发送信道反馈数据的方法中,确定用于与通信信道对应的一个或多个空间流的多个正交频分复用(OFDM)音调的信道数据。 确定与一个或多个空间流和一个或多个OFDM音调相关联的多个角度值。 对于一个或多个空间流中的每一个,确定与一个或多个OFDM音调相关联的每音调信噪比(PT-SNR),并且通过对平均信噪比(avg-SNR)进行平均来确定平均信噪比 信噪比(SNR)值。 生成反馈报告至少包括i)多个角度值,ii)PT-SNR,以及iii)平均SNR。 反馈报告被包括在要从接收机发射到发射机的数据单元中。

    Beamforming by sector sweeping
    120.
    发明授权
    Beamforming by sector sweeping 有权
    按行业划分波动

    公开(公告)号:US08706039B2

    公开(公告)日:2014-04-22

    申请号:US12548393

    申请日:2009-08-26

    IPC分类号: H04B1/00

    摘要: A method for beamforming in a communication system includes receiving a first plurality of training data units via a plurality of antennas, applying a different steering vector as each training data unit is received, generating a first plurality of quality indicators based on the first plurality of received training data units, such that each of the first plurality of quality indicators corresponds to a respective one of the first plurality of received training data units, and selecting a steering vector based on the different steering vectors and the first plurality of quality indicators.

    摘要翻译: 一种用于在通信系统中的波束成形的方法包括经由多个天线接收第一多个训练数据单元,在接收到每个训练数据单元时应用不同的导向向量,基于所接收的第一多个接收到的第一多个接收到的训练数据单元生成第一多个质量指示符 训练数据单元,使得所述第一多个质量指示符中的每一个对应于所述第一多个接收到的训练数据单元中的相应一个,并且基于所述不同的导向向量和所述第一多个质量指示符来选择导向向量。