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公开(公告)号：US20160295599A1
公开(公告)日：2016-10-06
申请号：US15132179
申请日：2016-04-18
发明人： Yong Liu , Raja Banerjea , Harish Ramamurthy
摘要： Systems and techniques relating to wireless communications are described. A described technique includes determining a primary access category for a transmission opportunity (TXOP) to transmit data to a primary wireless communication device based on a first back-off timer associated with the primary access category; determining a secondary access category for the TXOP to transmit data to a secondary wireless communication device; and transmitting, during the TXOP, spatially steered streams that concurrently provide separate data to respective devices comprising the primary and the secondary device. The technique can include controlling a contention window and a second back-off timer associated with the secondary access category, where the second back-off timer is not penalized for a communication failure associated with the primary access category or the secondary access category during the TXOP, and where the contention window is not penalized for the communication failure associated with the secondary access category during the TXOP.
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：基于与主访问类别相关联的第一退避定时确定用于传输机会（TXOP）的主要访问类别以将数据发送到主要无线通信设备; 确定用于所述TXOP的辅助接入类别以将数据传输到辅助无线通信设备; 以及在所述TXOP期间，在同时向包括所述主设备和所述辅助设备的相应设备提供单独数据的空间转向流中传送。 该技术可以包括控制与次要访问类别相关联的竞争窗口和第二退避定时器，其中在TXOP期间第二退避定时器不对与主访问类别或次要访问类别相关联的通信故障造成惩罚 ，并且在TXOP期间争用窗口对于与次要访问类别相关联的通信故障不受惩罚。
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2.发明授权System and method for establishing security in network devices capable of operating in multiple frequency bands 有权能够在多个频段工作的网络设备建立安全的系统和方法公开(公告)号：US09462472B2
公开(公告)日：2016-10-04
申请号：US14459827
申请日：2014-08-14
发明人： Yong Liu , Paul A. Lambert
摘要： A Network device including a security module to establish, in response to the network device being capable of operating in multiple frequency bands, and in response to the network device operating in a first frequency band, security for the frequency band and a second frequency band by performing a single authentication in the first frequency band prior to the network device switching operation form the first frequency band to the second frequency band. A session transfer module to transfer, subsequent to the network device switching operation from the first frequency band to the second frequency band, a communication session of the network device from the first frequency band to the second frequency band. The communication session resumes in the second frequency band using the security established for the second frequency band during the operation of the network device in the first frequency band.
摘要翻译： 一种网络设备，包括安全模块，用于响应于所述网络设备能够在多个频带中操作，以及响应于在第一频带中操作的所述网络设备来建立所述频带的安全性和第二频带， 在网络设备切换操作之前的第一频带中执行从第一频带到第二频带的单个认证。 一种会话转移模块，用于在从第一频带到第二频带的网络设备切换操作之后传送网络设备从第一频带到第二频带的通信会话。 使用在第一频带中的网络设备的操作期间使用为第二频带建立的安全性在第二频带中恢复通信会话。
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公开(公告)号：US09432154B2
公开(公告)日：2016-08-30
申请号：US14834210
申请日：2015-08-24
发明人： Hongyuan Zhang , Yong Liu
CPC分类号： H04L5/001 , H04L5/0044 , H04L27/2602 , H04L27/2613 , H04L27/2621 , H04W72/04 , H04W72/048 , H04W84/12
摘要： A method for generating OFDM signals is implemented in a device operating according to a communication protocol. The protocol defines non-duplicate mode data units corresponding to single component channels of a BSS channel, and non-duplicate mode data units corresponding to sets of adjacent component channels. Non-duplicate mode data units corresponding to a set of component channels have more lower-edge and/or upper-edge guard tones than non-duplicate mode data units corresponding to single component channels. The method includes determining that a duplicate mode will be utilized for an OFDM transmission in the set of component channels and, in response, generating a duplicate mode data unit. The duplicate mode data unit has fewer lower-edge and/or upper-edge guard tones than a non-duplicate mode data unit corresponding to a set of component channels, and includes one duplicate of the non-duplicate mode data unit corresponding to the single component channel for each adjacent component channel.
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公开(公告)号：US20160173179A1
公开(公告)日：2016-06-16
申请号：US15048867
申请日：2016-02-19
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 collectively comprise beamforming feedback, the beamforming feedback being derived from received versions of the sounding packet; determining a steering matrix based on the beamforming feedback; and transmitting, within a frame, spatially steered data packets to the wireless communications devices. The spatially steered data packets can be based on the steering matrix and data streams intended respectively for the wireless communication devices. The spatially steered data packets can 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，其中所述反馈分组共同地包括波束成形反馈，所述波束成形反馈从所述探测分组的接收版本导出; 基于所述波束成形反馈确定导向矩阵; 以及在帧内发送空间控制的数据分组到所述无线通信设备。 空间转向的数据分组可以基于分别用于无线通信设备的导向矩阵和数据流。 空间转向的数据分组可以通过不同的空间无线信道在帧内分别向无线通信设备提供数据流。
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公开(公告)号：US20160127228A1
公开(公告)日：2016-05-05
申请号：US14992876
申请日：2016-01-11
发明人： Yong Liu , Harish Ramamurthy , Raja Banerjea
IPC分类号： H04L12/721 , H04L12/801
CPC分类号： H04L45/70 , H04L5/0007 , H04L5/001 , H04L5/0037 , H04L5/0098 , H04L25/0208 , H04L25/0224 , H04L43/0888 , H04L47/10 , H04L47/14 , H04L47/24 , H04L47/50 , H04W24/02 , H04W72/042 , H04W74/0816 , H04W84/12
摘要： A first communication device transmits one or more first communication frames during a transmit opportunity period (TXOP) of the first communication device via a first composite channel. A control frame is generated, wherein the control frame includes information indicating a bandwidth of the first composite channel. After the one or more first communication frames have been transmitted, the first communication device transmits, during the TXOP, the control frame via the first composite channel. Information from a response frame that indicates a bandwidth of a second composite communication channel is extracted, the response frame having been transmitted by a second communication device and received by the first communication device during the TXOP. The first communication device transmits one or more second communication frames during the TXOP, wherein the one or more communication frames span the second composite communication channel and do not span the entire first composite communication channel.
摘要翻译： 第一通信设备经由第一复合信道在第一通信设备的发送机会期间（TXOP）期间发送一个或多个第一通信帧。 生成控制帧，其中控制帧包括指示第一复合信道的带宽的信息。 在已经发送了一个或多个第一通信帧之后，第一通信设备在TXOP期间经由第一复合信道发送控制帧。 来自指示第二复合通信信道的带宽的响应帧的信息被提取，响应帧已由第二通信设备发送并且在TXOP期间被第一通信设备接收。 第一通信设备在TXOP期间发送一个或多个第二通信帧，其中一个或多个通信帧跨越第二复合通信信道，并且不跨越整个第一复合通信信道。
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公开(公告)号：US09160428B2
公开(公告)日：2015-10-13
申请号：US13964953
申请日：2013-08-12
发明人： Yong Liu , Hongyuan Zhang , Hui-Ling Lou , Raja Banerjea
CPC分类号： H04B7/0408 , H04B7/0695 , H04B7/088
摘要： Training data for a first training session is generated to include a first data unit, the first data unit having a field that specifies a first number of beamforming training data units that can be communicated during a second training session to occur after the first training session. The training data including the first data unit is transmitted to a second device during the first training session. A second data unit received from the second device is processed to determine whether a request for the second device to participate in the second training session was accepted by the second device based on a first field of the second data unit. In response to determining that the request to participate in the second training session was accepted by the second device, the first number of beamforming training data units are transmitted during the second training session.
摘要翻译： 生成用于第一训练会话的训练数据以包括第一数据单元，第一数据单元具有指定可以在第一训练会话之后发生的第二训练会话期间传送的波束形成训练数据单元的第一数量的字段。 包括第一数据单元的训练数据在第一训练期间被传送到第二装置。 处理从第二设备接收的第二数据单元，以基于第二数据单元的第一字段来确定第二设备是否接受了参与第二训练会话的第二设备的请求。 响应于确定参与第二训练会话的请求被第二设备接受，在第二训练会话期间发送第一数量的波束形成训练数据单元。
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公开(公告)号：US09125235B2
公开(公告)日：2015-09-01
申请号：US13959585
申请日：2013-08-05
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 obtaining data for transmission to a wireless communication device, the device being configured to process incoming transmissions based on an aggregate data unit format that specifies signaling for aggregating multiple medium access control (MAC) protocol data units (MPDUs); generating, based on the data and the aggregate data unit format, an aggregate MPDU (A-MPDU) that includes a single MPDU having a length greater than zero, the single MPDU residing in a subframe of the A-MPDU; setting a delimiter of the subframe to indicate that the single MPDU is the only MPDU within the A-MPDU that has a length greater than zero, and to cause the device to accept the A-MPDU without a corresponding block acknowledgement agreement; including, in a physical (PHY) frame, the A-MPDU; and transmitting the PHY frame to the device.
摘要翻译： 描述与无线通信相关的系统和技术。 所描述的技术包括获得用于传输到无线通信设备的数据，该设备被配置为基于指定用于聚合多个媒体接入控制（MAC）协议数据单元（MPDU）的信令的聚合数据单元格式来处理传入传输; 基于数据和聚合数据单元格式生成包括长度大于零的单个MPDU的聚合MPDU（A-MPDU），该单个MPDU驻留在A-MPDU的子帧中; 设置子帧的分隔符以指示单个MPDU是长度大于零的A-MPDU内的唯一MPDU，并且使得设备在没有相应的块确认协议的情况下接受A-MPDU; 包括在物理（PHY）帧中的A-MPDU; 并将PHY帧发送到设备。
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公开(公告)号：US08988979B2
公开(公告)日：2015-03-24
申请号：US13739657
申请日：2013-01-11
发明人： Sudhir Srinivasa , Hongyuan Zhang , Yong Liu
CPC分类号： H04L29/0653 , H04L1/0008 , H04L1/0041 , H04L1/0079 , H04L1/1671 , H04L5/0091 , H04L27/00
摘要： In a method for generating a data unit, a signal field is generated to include a first subfield having one of: a length indication to indicate a number of bytes in a data portion of the data unit, or a duration indication to indicate a number of OFDM symbols in the data portion of the data unit and a second subfield to indicate whether the first subfield includes the length indication or the duration indication. When the first subfield includes the length indication, one or more padding bits are added to a set of information bits according to a first padding scheme. When the first subfield includes the duration indication, one or more padding bits are added to the set of information bits to according to a second padding scheme. Padded information bits are encoded, and the data unit is generated to included the encoded information bits.
摘要翻译： 在用于产生数据单元的方法中，生成信号字段以包括具有以下之一的第一子场：指示数据单元的数据部分中的字节数的长度指示，或表示数据单元的数量的持续时间指示 数据单元的数据部分中的OFDM符号和第二子字段，以指示第一子字段是否包括长度指示或持续时间指示。 当第一子字段包括长度指示时，根据第一填充方案将一个或多个填充比特添加到一组信息比特。 当第一子场包括持续时间指示时，根据第二填充方案将一个或多个填充比特添加到该组信息比特。 编码填充信息比特，生成数据单元以包含编码信息比特。
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公开(公告)号：US20140036895A1
公开(公告)日：2014-02-06
申请号：US13959585
申请日：2013-08-05
发明人： Yong Liu , Harish Ramamurthy , Ken Kinwah Ho , Raja Banerjea , Hongyuan Zhang
IPC分类号： H04W84/12
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 obtaining data for a transmission to a wireless communication device. The wireless communication device can be configured to process incoming transmissions based on an aggregate data unit format that specifies signaling for aggregating multiple medium access control (MAC) data units. The technique includes, in a physical (PHY) frame, an aggregate data unit that is based on the data and the aggregate data unit format, the aggregate data unit including a single MAC data unit. The technique includes, in the PHY frame, an indication to signal that the MAC data unit in the aggregate data unit is singular and to cause the wireless communication device to accept the aggregate data unit without a corresponding block acknowledgement agreement.
摘要翻译： 描述与无线通信相关的系统和技术。 所描述的技术包括获得用于向无线通信设备发送的数据。 无线通信设备可以被配置为基于指定用于聚合多个媒体访问控制（MAC）数据单元的信令的聚合数据单元格式来处理传入传输。 该技术在物理（PHY）帧中包括基于数据和聚合数据单元格式的聚合数据单元，聚合数据单元包括单个MAC数据单元。 该技术在PHY帧中包括用于表明聚合数据单元中的MAC数据单元是奇异的并且使无线通信设备接受聚合数据单元而没有相应的块确认协议的指示。
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公开(公告)号：US20140003384A1
公开(公告)日：2014-01-02
申请号：US14015722
申请日：2013-08-30
发明人： Hongyuan Zhang , Hui-Ling Lou , Rohit U. Nabar , Yong Liu
IPC分类号： H04L5/00
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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