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61 条记录 (耗时 0.038 秒)

    Parsing and encoding methods in a communication system
    2.
    发明授权
    Parsing and encoding methods in a communication system 有权
    通信系统中的解析和编码方法

    公开(公告)号：US08873652B2

    公开(公告)日：2014-10-28

    申请号：US13246577

    申请日：2011-09-27

    申请人： Sudhir Srinivasa ,  Hongyuan Zhang

    发明人： Sudhir Srinivasa ,  Hongyuan Zhang

    IPC分类号： H01K1/10

    CPC分类号： H04L1/0643 ,  H04L1/0016 ,  H04L1/0042 ,  H04L5/0044 ,  H04L27/2602 ,  H04L27/2626

    摘要： In a method for generating a physical layer (PHY) data unit for transmission via a communication channel, a plurality of information bits to be included in the PHY data unit is received. A number of padding bits that need to be added to the information bits such that the information bits, after having been encoded, fill an integer number of orthogonal frequency division multiplexing (OFDM) symbols is determined. The number of padding bits is added to the information bits prior to encoding and the information bits are parsed to a number of encoders. The information bits are encoded to generate coded data bits. A last block of the data unit is encoded differently from the previous blocks. The PHY data unit to include the coded data bits is generated.

    摘要翻译： 在通过通信信道生成用于发送的物理层（PHY）数据单元的方法中，接收要包括在PHY数据单元中的多个信息位。 需要添加到信息比特的多个填充比特，使得已经被编码之后的信息比特填满整数个正交频分复用（OFDM）符号。 将填充比特数添加到编码前的信息比特，并将信息比特解析为多个编码器。 信息位被编码以产生编码数据位。 数据单元的最后一个块与先前的块不同的编码。 生成包含编码数据位的PHY数据单元。

    Method and apparatus for sounding multiple stations
    3.
    发明授权
    Method and apparatus for sounding multiple stations 有权
    用于发声多台车站的方法和装置

    公开(公告)号：US08873525B2

    公开(公告)日：2014-10-28

    申请号：US12959145

    申请日：2010-12-02

    申请人： Yong Liu ,  Hongyuan Zhang ,  Raja Banerjea ,  Harish Ramamurthy ,  Sudhir Srinivasa

    发明人： Yong Liu ,  Hongyuan Zhang ,  Raja Banerjea ,  Harish Ramamurthy ,  Sudhir Srinivasa

    IPC分类号： H04W4/00 ,  H04L25/03 ,  H04L25/02

    CPC分类号： H04L25/03343 ,  H04L25/0204 ,  H04L25/0228 ,  H04L2025/03426 ,  H04L2025/03802

    摘要： One or more stations to provide sounding feedback in response to a training signal sequence are determined, and a schedule for the one or more stations to provide sounding feedback is determined based on capabilities of the one or more stations to transmit sounding feedback at a defined time period after an end of the training signal sequence. A communication frame is generated that includes i) an indication of a request for the plurality of stations to provide sounding feedback corresponding to the training signal sequence, and ii) an indication of when the one or more stations are to transmit sounding feedback. The communication frame is transmitted along with the training sequence.

    摘要翻译： 确定响应于训练信号序列提供探测反馈的一个或多个站，并且基于一个或多个站在定义的时间内发送探测反馈的能力来确定用于提供探测反馈的一个或多个站的调度 训练信号序列结束后的周期。 产生通信帧，其包括i）对多个站提供对应于训练信号序列的探测反馈的请求的指示，以及ii）一个或多个站何时发送探测反馈的指示。 通信帧与训练序列一起传输。

    Optimum interleaver design for a communication system
    4.
    发明授权
    Optimum interleaver design for a communication system 有权
    通信系统的最佳交织器设计

    公开(公告)号：US08699594B2

    公开(公告)日：2014-04-15

    申请号：US13212440

    申请日：2011-08-18

    申请人： Yihong Qi ,  Sudhir Srinivasa ,  Hongyuan Zhang

    发明人： Yihong Qi ,  Sudhir Srinivasa ,  Hongyuan Zhang

    IPC分类号： H04K1/10

    CPC分类号： H04B7/046 ,  H04L1/0009 ,  H04L1/0071 ,  H04L1/0643 ,  H04L1/203 ,  H04L5/0046 ,  H04L27/2601

    摘要： In a method for interleaving information bits in a physical layer (PHY) data unit, a channel bandwidth to be used for transmitting the PHY data unit is determined and a frequency rotation parameter NROT corresponding to the channel bandwidth is selected. A spatial stream constant is selected for each spatial stream from the set [0, 5, 2, 7, 3, 6, 1, 4] or a subset thereof depending on a number of spatial streams to be utilized, wherein each constant in the set corresponds to a respective spatial stream. Information bits are interleaved according to the selected frequency rotation parameter NROT and the selected spatial stream constant.

    摘要翻译： 在用于交织物理层（PHY）数据单元中的信息比特的方法中，确定要用于发送PHY数据单元的信道带宽，并且选择与信道带宽对应的频率旋转参数NROT。 根据要利用的空间流的数量，从集合[0,5,2,7,3,6,1,4]或其子集为每个空间流选择空间流常数，其中， 集合对应于相应的空间流。 信息比特根据所选择的频率旋转参数NROT和所选择的空间流常数进行交织。

    Methods and apparatus for WLAN transmission
    5.
    发明授权
    Methods and apparatus for WLAN transmission 有权

    公开(公告)号：US08681884B2

    公开(公告)日：2014-03-25

    申请号：US12846681

    申请日：2010-07-29

    申请人： Sudhir Srinivasa ,  Hongyuan Zhang ,  Rohit U. Nabar

    发明人： Sudhir Srinivasa ,  Hongyuan Zhang ,  Rohit U. Nabar

    IPC分类号： H04L27/28

    摘要： In a method for generating a physical layer (PHY) data unit for transmission via a communication channel, a first set of modulation coding schemes (MCSs) and a second set of MCSs that correspond to a number of spatial streams and a number of encoders are provided. The first set of MCSs correspond to a first channel bandwidth and the second set of MCSs correspond to a second channel bandwidth, and the first set of MCSs is different than the second set of MCSs. An MCS is selected from the first set of MCSs when the PHY data unit is to be transmitted using a channel having the first channel bandwidth, and the MCS is selected from the second set of MCSs when the PHY data unit is to be transmitted using a channel having the second channel bandwidth. Information bits are encoded using the number of encoders and according to the selected MCS, and the encoded information bits are parsed into the number of spatial streams. The encoded information bits are modulated according to the MCS, and a plurality of OFDM symbols are formed based on the modulated encoded information bits.

    Signaling guard interval capability in a communication system
    6.
    发明授权
    Signaling guard interval capability in a communication system 有权
    通信系统中的信令保护间隔功能

    公开(公告)号：US08665908B1

    公开(公告)日：2014-03-04

    申请号：US13102727

    申请日：2011-05-06

    申请人： Hongyuan Zhang ,  Sudhir Srinivasa ,  Yong Liu

    发明人： Hongyuan Zhang ,  Sudhir Srinivasa ,  Yong Liu

    IPC分类号： H04J3/24 ,  H04Q11/04

    CPC分类号： H04W24/02 ,  H04Q11/0478

    摘要： In a wireless network in which communication devices are configured to use a first guard interval between symbols or a second guard interval between symbols, wherein the first guard interval has a length shorter than a length of the second guard interval, a field is generated to indicate a set of one or more modulation and coding schemes (MCSs) supported by a first device in the wireless network and to indicate whether each of the one or more MCSs is supported when using the first guard interval. A data unit that includes the field is generated and transmitted to a second device in the wireless network.

    摘要翻译： 在其中通信设备被配置为使用符号之间的第一保护间隔或符号之间的第二保护间隔的无线网络中，其中第一保护间隔的长度短于第二保护间隔的长度，生成字段以指示 由无线网络中的第一设备支持的一个或多个调制和编码方案（MCS）的集合，并且在使用第一保护间隔时指示是否支持一个或多个MCS中的每一个。 生成包含该字段的数据单元并将其发送到无线网络中的第二设备。

    Narrow-band OFDM mode for WLAN
    8.
    发明授权
    Narrow-band OFDM mode for WLAN 有权
    用于WLAN的窄带OFDM模式

    公开(公告)号：US08379757B1

    公开(公告)日：2013-02-19

    申请号：US12789325

    申请日：2010-05-27

    申请人： Hongyuan Zhang ,  Sudhir Srinivasa ,  Rohit U. Nabar ,  Raja Banerjea

    发明人： Hongyuan Zhang ,  Sudhir Srinivasa ,  Rohit U. Nabar ,  Raja Banerjea

    IPC分类号： H04L27/00

    CPC分类号： H04L27/2627 ,  H04J3/0697 ,  H04L27/2626 ,  H04L27/2657 ,  H04L27/2675

    摘要： Systems and techniques relating to wireless local area network devices include a method involving generating a baseband signal indicative of one or more symbols, modulating the baseband signal at a carrier frequency to produce a modulated signal, transmitting the modulated signal via a wireless channel, and providing a clock signal to control, in the baseband signal, a duration of the one or more symbols. Providing the clock signal can include selectively using a first clock frequency to generate a first baseband signal having a first bandwidth. Providing the clock signal can include selectively using a second, lower clock frequency to generate a second baseband signal having a second, lower bandwidth. The second clock frequency can be used to extend a wireless communication range of the wireless channel.

    摘要翻译： 与无线局域网设备相关的系统和技术包括生成表示一个或多个符号的基带信号的方法，以载波频率调制基带信号以产生调制信号，经由无线信道发送调制信号，并提供 在基带信号中控制一个或多个符号的持续时间的时钟信号。 提供时钟信号可以包括选择性地使用第一时钟频率来产生具有第一带宽的第一基带信号。 提供时钟信号可以包括选择性地使用第二较低时钟频率来产生具有第二较低带宽的第二基带信号。 第二时钟频率可以用于扩展无线信道的无线通信范围。

    LOW BANDWIDTH PHY FOR WLAN
    9.
    发明申请
    LOW BANDWIDTH PHY FOR WLAN 有权
    WLAN的低带宽PHY

    公开(公告)号：US20120320890A1

    公开(公告)日：2012-12-20

    申请号：US13494527

    申请日：2012-06-12

    申请人： Hongyuan Zhang ,  Raja Banerjea ,  Sudhir Srinivasa

    发明人： Hongyuan Zhang ,  Raja Banerjea ,  Sudhir Srinivasa

    IPC分类号： H04W84/12

    CPC分类号： H04L1/004 ,  H04L1/0025 ,  H04L1/0043 ,  H04L1/0057 ,  H04L1/0061 ,  H04L1/08 ,  H04L7/048 ,  H04L27/2602 ,  H04L27/2613

    摘要： A method, in a communication system utilizing channels for transmitting first PHY mode data units, includes generating first and second data units conforming to first and second PHY modes, respectively, causing the first data unit to be transmitted via a channel, determining a frequency band for transmitting the second data unit, and causing the second data unit to be transmitted via the frequency band. Generating the first and second data units includes generating first and second series of OFDM symbols, respectively. At least a portion of the second OFDM symbols includes more upper-edge than lower-edge guard tones, or vice versa. The frequency band has a bandwidth equal to the channel bandwidth divided by n≧2, and either a lowest or highest sub-band of one or more channels is excluded from the frequency band when the second OFDM symbols include more upper-edge or more lower-edge guard tones, respectively.

    摘要翻译： 一种在利用用于发送第一PHY模式数据单元的信道的通信系统中的方法，包括分别产生符合第一和第二PHY模式的第一和第二数据单元，使得经由信道发送第一数据单元，确定频带 用于发送第二数据单元，并且使第二数据单元经由频带发送。 生成第一和第二数据单元包括分别产生第一和第二系列OFDM符号。 第二OFDM符号的至少一部分包括比下边缘保护音更多的上边缘，反之亦然。 频带具有等于信道带宽除以n≥2的带宽，并且当第二OFDM符号包括更多的上边缘或更低的边缘时，从频带中排除一个或多个信道的最低或最高子带 - 保护音，分别。

    Methods and Apparatus for WLAN Transmission
    10.
    发明申请
    Methods and Apparatus for WLAN Transmission 有权
    WLAN传输方法与装置

    公开(公告)号：US20110026623A1

    公开(公告)日：2011-02-03

    申请号：US12846681

    申请日：2010-07-29

    申请人： Sudhir Srinivasa ,  Hongyuan Zhang ,  Rohit U. Nabar

    发明人： Sudhir Srinivasa ,  Hongyuan Zhang ,  Rohit U. Nabar

    IPC分类号： H04L27/28

    CPC分类号： H04L1/0005 ,  H04L1/0016 ,  H04L27/2607 ,  H04L27/2608 ,  H04L27/34 ,  H04W84/12

    摘要： In a method for generating a physical layer (PHY) data unit for transmission via a communication channel, a first set of modulation coding schemes (MCSs) and a second set of MCSs that correspond to a number of spatial streams and a number of encoders are provided. The first set of MCSs correspond to a first channel bandwidth and the second set of MCSs correspond to a second channel bandwidth, and the first set of MCSs is different than the second set of MCSs. An MCS is selected from the first set of MCSs when the PHY data unit is to be transmitted using a channel having the first channel bandwidth, and the MCS is selected from the second set of MCSs when the PHY data unit is to be transmitted using a channel having the second channel bandwidth. Information bits are encoded using the number of encoders and according to the selected MCS, and the encoded information bits are parsed into the number of spatial streams. The encoded information bits are modulated according to the MCS, and a plurality of OFDM symbols are formed based on the modulated encoded information bits.

    摘要翻译： 在用于生成经由通信信道进行传输的物理层（PHY）数据单元的方法中，与多个空间流和多个编码器相对应的第一组调制编码方案（MCS）和第二组MCS相对应， 提供。 第一组MCS对应于第一信道带宽，并且第二组MCS对应于第二信道带宽，并且第一组MCS不同于第二组MCS。 当要使用具有第一信道带宽的信道来发送PHY数据单元时，从第一组MCS中选择MCS，并且当使用第一组MCS发送PHY数据单元时，从第二组MCS中选择MCS 信道具有第二信道带宽。 使用编码器的数量并根据所选择的MCS对信息比特进行编码，并将编码的信息比特解析为空间流的数量。 编码信息比特根据MCS进行调制，并且基于调制编码信息比特形成多个OFDM符号。