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公开(公告)号：US09661647B2
公开(公告)日：2017-05-23
申请号：US14673216
申请日：2015-03-30
发明人： Yong Liu , Raja Banerjea , Harish Ramamurthy
CPC分类号： H04W72/121 , H04L5/0023 , H04L5/0044 , H04W74/0816 , H04W74/0833 , H04W84/12
摘要： Systems and technique for wireless communication are described. A describe technique includes transmitting, from a first device, a request to send (RTS) to the second devices to protect a wireless communication neighborhood of the first device and wireless communication neighborhood of the second devices for transmission of a multi-user frame; receiving clear to send (CTS) responses from the second devices; determining a bandwidth width for the multi-user frame based on a bandwidth availability among the second devices as indicated by the CTS responses and bandwidth indications included in the CTS responses, the multi-user frame comprising spatially steered data frames that are respectively intended for the second devices and are in accordance with the determined bandwidth width; and transmitting the multi-user frame to the identified devices in accordance with the determined bandwidth width.
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公开(公告)号：US09419849B2
公开(公告)日：2016-08-16
申请号：US14930434
申请日：2015-11-02
发明人： Hongyuan Zhang , Rohit U. Nabar , Raja Banerjea , Yong Liu , Sudhir Srinivasa , Hyukjoon Kwon
CPC分类号： H04L29/0653 , H04L1/004 , H04L1/0046 , H04L1/0065 , H04L1/08 , H04L5/0007 , H04L27/2602 , H04L27/2613 , H04L27/2617 , H04L27/2621 , H04L27/2626 , H04L27/2636
摘要： In a method for generating a physical layer (PHY) data unit for transmission via a communication channel, information bits to be included in the PHY data unit are encoded using a forward error correction (FEC) encoder. Also, the information bits are encoded according to a block coding scheme, where m copies of each bit are included in the information bits, and one or more bits in the m copies of each bit are flipped. The information bits are mapped to a plurality of constellation symbols, and a plurality of orthogonal frequency division multiplexing (OFDM) symbols are generated to include the plurality of constellation symbols. The PHY data unit is generated to include the plurality of OFDM symbols.
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，使用前向纠错（FEC）编码器对要包括在PHY数据单元中的信息比特进行编码。 此外，信息比特根据块编码方案进行编码，其中每个比特的m个副本被包括在信息比特中，并且每个比特的m个副本中的一个或多个比特被翻转。 信息比特被映射到多个星座符号，并且生成多个正交频分复用（OFDM）符号以包括多个星座符号。 生成PHY数据单元以包括多个OFDM符号。
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23.发明授权Using duration field in beacon to reserve channel time subsequent to beacon 有权在信标中使用持续时间字段来保留信标后的信道时间公开(公告)号：US09386516B2
公开(公告)日：2016-07-05
申请号：US13931399
申请日：2013-06-28
发明人： Yong Liu
CPC分类号： H04W52/02 , H04W4/08 , H04W72/0446 , H04W74/002 , Y02D70/00 , Y02D70/142
摘要： A length of a time period corresponding to reserving a communication channel is determined, where the length of the time period exceeds the length of a beacon frame. A beacon frame is generated, the beacon frame having a duration field. The duration field is set to a value corresponding to the length of the time period in order to reserve the communication channel for the time period, the length of the time period exceeding the length of the beacon frame. The beacon frame is then transmitted.
摘要翻译： 确定对应于保留通信信道的时间段的长度，其中时间段的长度超过信标帧的长度。 生成信标帧，信标帧具有持续时间字段。 持续时间字段被设置为与时间段的长度相对应的值，以便保留该时间段的通信信道，该时间段的长度超过信标帧的长度。 然后发送信标帧。
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公开(公告)号：US20160119815A1
公开(公告)日：2016-04-28
申请号：US14989754
申请日：2016-01-06
发明人： Yong Liu , Harish Ramamurthy , Ken Kinwah Ho , Raja Banerjea , Hongyuan Zhang
CPC分类号： H04W28/06 , H04L1/06 , H04L1/1614 , H04L1/1685 , H04L5/001 , H04L5/0023 , H04L5/0032 , H04L5/0037 , H04L5/0064 , H04L5/0094 , H04L69/324 , H04W72/042 , H04W84/12
摘要： Systems and techniques relating to wireless communications are described. A described technique includes generating a physical frame, the physical frame including (i) spatially steered length fields and (ii) spatially steered frames that respectively include aggregated medium access control data units (A-MPDUs) that encapsulate data, the steered length fields respectively indicating lengths of the A-MPDUs in number of four-octet units. Generating the physical frame can include including after an A-MPDU of the A-MPDUs in a steered frame of the steered frames, (i) a medium access control layer pad and (ii) a physical layer pad. A length of the medium access control layer pad and a length of the physical layer pad can be based on the physical frame.
摘要翻译： 描述与无线通信相关的系统和技术。 所描述的技术包括生成物理帧，物理帧包括（i）空间转向长度字段和（ii）空间转向帧，其分别包括封装数据的聚合介质访问控制数据单元（A-MPDU），转向长度字段 指示A-MPDU的长度以四个八位字节为单位。 生成物理帧可以包括在转向帧的转向帧中的A-MPDU的A-MPDU之后包括，（i）介质访问控制层焊盘和（ii）物理层焊盘。 介质访问控制层焊盘的长度和物理层焊盘的长度可以基于物理帧。
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公开(公告)号：US09270431B2
公开(公告)日：2016-02-23
申请号：US14015722
申请日：2013-08-30
发明人： Hongyuan Zhang , Hui-Ling Lou , Rohit U. Nabar , Yong Liu
CPC分类号： H04B7/0456 , H04B7/0413 , H04B7/0617 , H04B7/0619 , H04B7/0626 , H04B7/0634 , H04B7/0697 , H04L5/0048
摘要： Systems, apparatuses, and techniques relating to wireless local area network devices are described. A described technique includes transmitting a sounding packet to wireless communication devices; receiving, in response to the sounding packet, feedback packets from the wireless communication devices, wherein the feedback packets are indicative of beamforming matrices, the beamforming matrices being derived from received versions of the sounding packet; determining steering matrices based on the beamforming matrices; generating spatially steered data packets for the wireless communication devices based respectively on the steering matrices and data streams intended respectively for the wireless communication devices; and transmitting, within a frame, the spatially steered data packets to the wireless communications devices, wherein the spatially steered data packets concurrently provide the data streams respectively within the frame to the wireless communication devices via different spatial wireless channels.
摘要翻译： 描述与无线局域网设备相关的系统，设备和技术。 所描述的技术包括向无线通信设备发送探测分组; 响应于所述探测分组，从所述无线通信设备接收反馈分组，其中所述反馈分组指示波束形成矩阵，所述波束形成矩阵从所述探测分组的接收版本导出; 基于所述波束形成矩阵确定导向矩阵; 基于分别用于无线通信设备的导向矩阵和数据流，为无线通信设备生成空间转向的数据分组; 以及在帧内将所述空间转向的数据分组发送到所述无线通信设备，其中所述空间转向数据分组在所述帧内分别通过不同的空间无线信道向所述无线通信设备提供所述数据流。
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公开(公告)号：US08942311B2
公开(公告)日：2015-01-27
申请号：US13768876
申请日：2013-02-15
发明人： Hongyuan Zhang , Yong Liu , Raja Banerjea
CPC分类号： H04W16/14 , H04L5/001 , H04L5/0023 , H04L5/0048 , H04L5/0064 , H04L27/2627 , H04L27/2628
摘要： A method for generating signals to be transmitted within a basic service set (BSS) channel, where a set of component channels is collectively coextensive with the BSS channel, includes determining that a first duplicate, in frequency, of a low bandwidth mode data unit will be located at an edge of the BSS channel. Each duplicate includes orthogonal frequency division multiplexing (OFDM) tones and has a bandwidth less than the narrowest channel of the component channels. The OFDM tones in each duplicate include one or more data tones, one or more pilot tones, and one or more guard tones. The method also includes generating a transmission signal comprising the duplicates, at least in part by scaling down at least one data tone, and/or zeroing out at least one data tone, of the first duplicate in response to determining that the first duplicate will be located at an edge of the BSS channel.
摘要翻译： 一种用于产生要在基本服务集（BSS）信道内发送的信号的方法，其中一组分量信道与BSS信道共同共同扩展，包括确定低频模式数据单元中频率的第一副本将 位于BSS通道的边缘。 每个副本包括正交频分复用（OFDM）音调，并且具有小于分量信道最窄信道的带宽。 每个副本中的OFDM音调包括一个或多个数据音调，一个或多个导频音调以及一个或多个保护音调。 所述方法还包括：响应于确定所述第一副本将是所述第一副本至少部分地通过缩放至少一个数据音调和/或清零所述第一副本的至少一个数据音调来生成包括所述重复的传输信号 位于BSS通道的边缘。
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公开(公告)号：US20140314053A1
公开(公告)日：2014-10-23
申请号：US14320306
申请日：2014-06-30
发明人： Yong Liu , Hongyuan Zhang , Raja Banerjea
IPC分类号： H04W72/04
CPC分类号： H04W72/0446 , H04B7/0617 , H04W16/28 , H04W84/12
摘要： A method for beamforming in a communication network includes generating a plurality of beamforming training (BFT) units associated with a beamforming session between a pair of devices, where each of the plurality of BFT units corresponds to a different beamsteering vector, causing a first non-zero subset of the plurality of BFT units to be transmitted during a first timeslot, and causing a second non-zero subset of the plurality of BFT units to be transmitted during a second timeslot, where the first time timeslot and the second timeslot are not contiguous.
摘要翻译： 一种用于通信网络中的波束成形的方法包括：生成与一对设备之间的波束形成会话相关联的多个波束形成训练（BFT）单元，其中多个BFT单元中的每一个对应于不同的波束引导向量， 在第一时隙期间要发送的多个BFT单元的零子集，以及在第二时隙期间发送多个BFT单元的第二非零子集，其中第一时隙和第二时隙不连续 。
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公开(公告)号：US08867569B2
公开(公告)日：2014-10-21
申请号：US13888223
申请日：2013-05-06
发明人： Hongyuan Zhang , Rohit U. Nabar , Manyuan Shen , Songping Wu , Hui-Ling Lou , Yong Liu
CPC分类号： H04W16/28 , H04L25/03343 , H04L27/2613 , H04L2025/03426 , H04L2025/03789 , H04L2025/03815
摘要： A beamforming training (BFT) data unit for transmission via a communication channel in a wireless personal area network is generated, and in particular, is for transmitting beamforming training information. A physical layer header and first BFT data are encoded using block encoding to generate a first block. Second BFT data are encoded using block encoding to generate a second block. The BFT data unit is generated with a fixed-length payload, such that the BFT data unit includes only i) a preamble, ii) the first block, and iii) the second block.
摘要翻译： 生成用于通过无线个域网中的通信信道传输的波束形成训练（BFT）数据单元，特别是用于发送波束成形训练信息。 使用块编码对物理层报头和第一BFT数据进行编码以生成第一块。 使用块编码对第二BFT数据进行编码以生成第二块。 生成具有固定长度有效载荷的BFT数据单元，使得BFT数据单元仅包括i）前置码，ii）第一块，以及iii）第二块。
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公开(公告)号：US20140206304A1
公开(公告)日：2014-07-24
申请号：US14222569
申请日：2014-03-21
发明人： Hongyuan Zhang , Manyuan Shen , Songping Wu , Hui-Ling Lou , Yong Liu
IPC分类号： H04B1/04
CPC分类号： H04B1/04 , H04B7/0617 , H04B7/063 , H04B7/0632 , H04B7/0684 , H04B7/0695 , H04B7/0848 , H04B7/086 , H04B7/088
摘要： A first plurality of training data units are transmitted via a plurality of antennas of a first station as part of a first transmit beamforming training procedure. Subsequently, a second plurality of training data units are received via the plurality of antennas as part of second transmit beamforming procedure while the first station applies a single receive antenna configuration. The second plurality of training data units includes an information element that specifies a feedback from a second station, the feedback including an identifier corresponding to one of the training data units in the first plurality of data units. The first station transmits a feedback message to the second station, that includes (i) one or more indicators of one or more training data units selected from the second plurality of training data units, and (ii) a request to perform a subsequent beamforming training procedure.
摘要翻译： 作为第一发射波束形成训练程序的一部分，经由第一站的多个天线发送第一多个训练数据单元。 随后，作为第二发射波束形成过程的一部分，经由多个天线接收第二多个训练数据单元，而第一站施加单个接收天线配置。 第二多个训练数据单元包括指定来自第二站的反馈的信息元素，所述反馈包括与第一多个数据单元中的训练数据单元之一相对应的标识符。 第一站向第二站发送反馈消息，其包括（i）从第二多个训练数据单元中选择的一个或多个训练数据单元的一个或多个指示符，以及（ii）执行后续波束形成训练的请求 程序。
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30.发明申请EFFICIENT AND FLEXIBLE TRANSMIT BEAMFORMING SECTOR SWEEP IN A MULTI-ANTENNA COMMUNICATION DEVICE 审中-公开在多天线通信设备中的有效和灵活的发射波束波束扫描公开(公告)号：US20140112317A1
公开(公告)日：2014-04-24
申请号：US14140120
申请日：2013-12-24
发明人： Yong Liu , Hongyuan Zhang , Songping Wu
CPC分类号： H04B7/04 , H04B7/0617 , H04B7/0632 , H04L43/0847 , H04W16/28 , H04W84/02
摘要： A method implemented in a communication device includes receiving a first beamforming training transmission corrupted by a collision, determining a first station to which the first beamforming training transmission corresponds based on the first beamforming training transmission corrupted by the collision, and in response to determining the first station, transmitting a signal to the first station to prompt the first station to transmit a second beamforming training transmission.
摘要翻译： 在通信设备中实现的方法包括接收由冲突损坏的第一波束成形训练发射，基于由所述冲突损坏的所述第一波束形成训练发射，确定所述第一波束形成训练传输对应的第一台，以及响应于确定所述第一 向第一站发送信号以提示第一站发送第二波束形成训练传输。
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