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公开(公告)号：US09918340B1
公开(公告)日：2018-03-13
申请号：US14875597
申请日：2015-10-05
发明人： Yong Liu
CPC分类号： H04W74/08 , H04L47/27 , H04W40/244 , H04W48/08 , H04W48/12 , H04W74/006 , H04W74/0808 , H04W84/12 , H04W88/02
摘要： A wireless access point includes a medium access control circuit that generates a first traffic indication map announcing a restricted access window (RAW). A physical layer device transmits a first beacon, including the first traffic indication map, over a wireless medium. The RAW begins subsequent to the first beacon and ends prior to the next beacon. During the RAW, the physical layer device accesses the wireless medium using a first set of channel access parameters. Outside of the RAW, the physical layer device accesses the wireless medium using a second set of channel access parameters different than the first set. The second set includes channel access values respectively corresponding to access categories. A first frame, associated with a first access category, is transmitted after waiting for a period of time that is based on a channel access value corresponding to the first access category.
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公开(公告)号：US09775097B1
公开(公告)日：2017-09-26
申请号：US15254219
申请日：2016-09-01
发明人： Yong Liu
IPC分类号： G06F15/173 , H04W48/08 , H04W8/24 , H04W52/02 , H04W84/12
CPC分类号： H04W48/08 , H04L5/0037 , H04L5/0058 , H04L5/0076 , H04W8/24 , H04W48/02 , H04W52/0209 , H04W52/0219 , H04W84/12 , Y02D70/00 , Y02D70/142 , Y02D70/144 , Y02D70/146
摘要： A client station includes a physical layer device to receive, from an access point, a requirement for assignment to a first power category among a plurality of power categories defined by the access point. Each of the plurality of power categories has a respective access priority associated with access to a communication channel. A request module is to determine whether an operating characteristic of the client station meets the requirement for assignment to the first power category and generate, in response to a determination that the operating characteristic meets the requirement, a request to be assigned to the first power category by the access point. The physical layer device is further to transmit the request to the access point and, based on whether the access point accepts or rejects the request, selectively access the communication channel according to a first access priority associated with the first power category.
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公开(公告)号：US09706599B1
公开(公告)日：2017-07-11
申请号：US13689183
申请日：2012-11-29
发明人： Hongyuan Zhang , Rohit U. Nabar , Sudhir Srinivasa , Raja Banerjea , Yong Liu
CPC分类号： H04W84/12 , H04J11/0026 , H04L27/2602 , H04L27/2613
摘要： A preamble, a first portion of a data payload, a midamble, and a second portion of the data payload of a single data unit are generated. The midamble is to be transmitted subsequent to transmission of the first portion of the data payload and prior to transmission of the second portion of the data payload. The midamble includes an indication of at least one characteristic of the data payload such as an indication of a size of the second portion of the data payload, or whether or not the data payload includes one or more other portions in addition to the first and second portions. A network interface of a communication device is configured to generate the preamble, the first and second portions of the data payload, and the midamble.
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4.发明授权Methods and apparatus for transmission of data at different modulation and/or coding rates 有权用于以不同调制和/或编码速率传输数据的方法和装置公开(公告)号：US09461858B1
公开(公告)日：2016-10-04
申请号：US14195185
申请日：2014-03-03
发明人： Hongyuan Zhang , Hui-Ling Lou , Yong Liu , Raja Banerjea
CPC分类号： H04L27/2604 , H04L1/0041 , H04L1/0625 , H04L25/03866 , H04L27/2627
摘要： In a method implemented in a communication device configured to transmit PHY data units via a communication channel, first data and second data is received. The first data is modulated according to a first constellation having a first number of constellation points, and the second data is modulated according to a second constellation having a second number of constellation points higher than the first number of constellation points. The first data and the second data is parsed to a plurality of spatial streams such that a first subset of the spatial streams includes at least some of the modulated first data but none of the modulated second data, and a second subset of the spatial streams includes at least some of the modulated second data but none of the modulated first data. A single PHY data unit that includes the plurality of spatial streams is generated.
摘要翻译： 在被配置为经由通信信道发送PHY数据单元的通信设备中实现的方法中，接收第一数据和第二数据。 根据具有第一数量的星座点的第一星座对第一数据进行调制，并且根据具有高于第一数量星座点的第二数量的星座点的第二星座对第二数据进行调制。 第一数据和第二数据被解析为多个空间流，使得空间流的第一子集包括调制的第一数据中的至少一些，但是调制的第二数据中的至少一个，空间流的第二子集包括 调制的第二数据中的至少一些，但是没有调制的第一数据。 生成包括多个空间流的单个PHY数据单元。
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公开(公告)号：US09456446B1
公开(公告)日：2016-09-27
申请号：US14981289
申请日：2015-12-28
发明人： Yong Liu , Hongyuan Zhang
CPC分类号： H04W74/0816 , H04W72/0406 , H04W72/0446 , H04W72/046 , H04W74/006 , H04W74/04 , H04W84/12
摘要： A first communication device determines that each second communication device in a plurality of second communication devices has respective data to be transmitted to the first communication device. The first communication device transmits a request to the plurality of second communication devices to transmit data to the first communication device simultaneously during a transmit opportunity period of the first communication device. The first communication device receives data transmitted simultaneously by the plurality of second communication devices during the transmit opportunity period of the first communication device.
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公开(公告)号：US09178745B2
公开(公告)日：2015-11-03
申请号：US14044710
申请日：2013-10-02
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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公开(公告)号：US09100074B1
公开(公告)日：2015-08-04
申请号：US14171773
申请日：2014-02-03
发明人： Hongyuan Zhang , Hui-Ling Lou , Yong Liu , Songping Wu
CPC分类号： H04B7/0617 , H04B7/0626 , H04B7/0634
摘要： A first communication device receives a plurality of training signals associated with a transmit beamforming training portion of a current iteration of a beamforming procedure between the first communication device and a second communication device. A receive antenna weight vector (AWV) is applied to an antenna array as each of the plurality of training signals is received. A channel estimate is determined based on reception of the plurality of training signals, and feedback is determined based on the channel estimate. The feedback is transmitted to the second communication device as part of the current iteration of the beamforming procedure.
摘要翻译： 第一通信设备接收与第一通信设备和第二通信设备之间的波束形成过程的当前迭代的发射波束形成训练部分相关联的多个训练信号。 接收天线权重向量（AWV）被施加到天线阵列，因为接收到多个训练信号中的每一个。 基于多个训练信号的接收来确定信道估计，并且基于信道估计来确定反馈。 作为波束形成过程的当前迭代的一部分，反馈被传送到第二通信设备。
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8.发明授权Systems and methods for selecting a modulation and coding scheme for wireless communication between wireless devices in a wireless network 有权用于选择用于无线网络中的无线设备之间的无线通信的调制和编码方案的系统和方法公开(公告)号：US08913582B1
公开(公告)日：2014-12-16
申请号：US14104168
申请日：2013-12-12
发明人： Hongyuan Zhang , Hui-Ling Lou , Rohit U. Nabar , Yong Liu
CPC分类号： H04L1/0003 , H04B7/0619 , H04W24/02 , H04W52/262
摘要： A first wireless device including a receiver and a transmitter. The receiver includes a channel estimation module configured to receive, from a second wireless device over a communication channel, a training packet and estimate a quality of the communication channel based on the training packet, and a modulation and coding scheme (MCS) determination module configured to determine an MCS based on one or more of the training packet and the estimated quality of the communication channel. The transmitter is configured to transmit, to the second wireless device over the communication channel, an indication of the MCS determined by the MCS determination module.
摘要翻译： 包括接收机和发射机的第一无线设备。 所述接收机包括：信道估计模块，被配置为通过通信信道从第二无线设备接收训练分组，并且基于所述训练分组来估计所述通信信道的质量;以及配置的调制和编码方案（MCS）确定模块 以基于训练分组中的一个或多个以及通信信道的估计质量来确定MCS。 发送器被配置为通过通信信道向第二无线设备发送由MCS确定模块确定的MCS的指示。
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公开(公告)号：US20140029681A1
公开(公告)日：2014-01-30
申请号：US14044710
申请日：2013-10-02
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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公开(公告)号：US10070482B1
公开(公告)日：2018-09-04
申请号：US15645335
申请日：2017-07-10
发明人： Hongyuan Zhang , Rohit U. Nabar , Sudhir Srinivasa , Raja Banerjea , Yong Liu
摘要： A preamble, a first portion of a data payload, a midamble, and a second portion of the data payload of a single data unit are generated. The midamble is to be transmitted subsequent to transmission of the first portion of the data payload and prior to transmission of the second portion of the data payload. The midamble includes an indication of at least one characteristic of the data payload such as an indication of a size of the second portion of the data payload, or whether or not the data payload includes one or more other portions in addition to the first and second portions. A network interface of a communication device is configured to generate the preamble, the first and second portions of the data payload, and the midamble.
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