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1. 发明申请

US20100260159A1 PHYSICAL LAYER FRAME FORMAT FOR WLAN 有权
标题翻译： WLAN的物理层框架格式
公开(公告)号：US20100260159A1
公开(公告)日：2010-10-14
申请号：US12758603
申请日：2010-04-12
申请人： Hongyuan Zhang , Hui-Ling Lou , Rohit U. Nabar , Sudhir Srinivasa , Mao Yu , Raja Banerjea
发明人： Hongyuan Zhang , Hui-Ling Lou , Rohit U. Nabar , Sudhir Srinivasa , Mao Yu , Raja Banerjea
IPC分类号： H04W4/00
CPC分类号： H04L1/0079 , H04L1/0072 , H04L1/009 , H04L27/2613 , H04L69/18 , H04W28/06 , H04W84/12 , H04W99/00
摘要： In a method for generating a data unit for transmission via a communication channel, wherein the data unit conforms to a first communication protocol, a preamble of the data unit is generated. The preamble includes a first field having information that indicates a duration of the data unit, the first field being formatted such that the first field is decodable by a receiver device that conforms to a second communication protocol but does not conform to the first communication protocol to determine the duration of the data unit based on the first field. Additionally, the preamble is formatted such that a portion of the preamble is decodable by a receiver device that conforms to a third communication protocol but does not conform to the first communication protocol. Also, the preamble is formatted such that a receiver device that conforms to the first communication protocol can determine that the data unit conforms to the first communication protocol. A data portion of the data unit that conforms to the first communication protocol and does not conform to either (i) the second communication protocol or (ii) the third communication protocol is generated.
摘要翻译：在通过通信信道生成用于发送的数据单元的方法中，其中数据单元符合第一通信协议，生成数据单元的前同步码。前导码包括具有指示数据单元的持续时间的信息的第一字段，第一字段被格式化，使得第一字段可由符合第二通信协议但不符合第一通信协议的接收机设备解码，基于第一个字段确定数据单元的持续时间。另外，前导码被格式化，使得前导码的一部分可以由符合第三通信协议但不符合第一通信协议的接收机设备解码。此外，前导码格式化使得符合第一通信协议的接收机设备可以确定数据单元符合第一通信协议。产生符合第一通信协议并且不符合（i）第二通信协议或（ii）第三通信协议的数据单元的数据部分。

2. 发明授权

US09655002B2 Physical layer frame format for WLAN 有权
公开(公告)号：US09655002B2
公开(公告)日：2017-05-16
申请号：US12758603
申请日：2010-04-12
申请人： Hongyuan Zhang , Hui-Ling Lou , Rohit U. Nabar , Sudhir Srinivasa , Mao Yu , Raja Banerjea
发明人： Hongyuan Zhang , Hui-Ling Lou , Rohit U. Nabar , Sudhir Srinivasa , Mao Yu , Raja Banerjea
IPC分类号： H04W80/00 , H04W28/06 , H04L1/00 , H04L29/06 , H04L27/26 , H04W84/12 , H04W99/00
CPC分类号： H04L1/0079 , H04L1/0072 , H04L1/009 , H04L27/2613 , H04L69/18 , H04W28/06 , H04W84/12 , H04W99/00
摘要： In a method for generating a data unit for transmission via a communication channel, wherein the data unit conforms to a first communication protocol, a preamble of the data unit is generated. The preamble includes a first field having information that indicates a duration of the data unit, the first field being formatted such that the first field is decodable by a receiver device that conforms to a second communication protocol but does not conform to the first communication protocol to determine the duration of the data unit based on the first field. Additionally, the preamble is formatted such that a portion of the preamble is decodable by a receiver device that conforms to a third communication protocol but does not conform to the first communication protocol. Also, the preamble is formatted such that a receiver device that conforms to the first communication protocol can determine that the data unit conforms to the first communication protocol. A data portion of the data unit that conforms to the first communication protocol and does not conform to either (i) the second communication protocol or (ii) the third communication protocol is generated.

3. 发明授权

US08599803B1 Open loop multiple access for WLAN 有权
公开(公告)号：US08599803B1
公开(公告)日：2013-12-03
申请号：US12772783
申请日：2010-05-03
申请人： Hongyuan Zhang , Rohit U. Nabar , Hui-Ling Lou , Sudhir Srinivasa , Arul Durai Murugan Palanivelu
发明人： Hongyuan Zhang , Rohit U. Nabar , Hui-Ling Lou , Sudhir Srinivasa , Arul Durai Murugan Palanivelu
IPC分类号： H04Q7/24
CPC分类号： H04W84/02 , H04J11/00 , H04L1/0643 , H04L27/2626
摘要： In a method for transmitting information in a wireless local area network (WLAN), a plurality of different data streams corresponding to a plurality of different devices are orthogonally multiplexed onto a single symbol stream without using channel state information corresponding to a plurality of channels between a transmitting device and the plurality of different devices. One or more transmit streams are generated using the single symbol stream.

4. 发明授权

US08477813B2 Physical layer data unit format 有权
标题翻译：物理层数据单元格式
公开(公告)号：US08477813B2
公开(公告)日：2013-07-02
申请号：US12548205
申请日：2009-08-26
申请人： Hongyuan Zhang , Rohit U. Nabar , Manyuan Shen , Songping Wu , Hui-Ling Lou , Yong Liu
发明人： Hongyuan Zhang , Rohit U. Nabar , Manyuan Shen , Songping Wu , Hui-Ling Lou , Yong Liu
IPC分类号： H04J3/06
CPC分类号： H04W16/28 , H04L25/03343 , H04L27/2613 , H04L2025/03426 , H04L2025/03789 , H04L2025/03815
摘要： In a wireless communication system wherein communication devices exchange information utilizing data units that conform to a first format, a beamforming training (BFT) data unit that conforms to a second format is transmitted, wherein a length of the BFT data unit is shorter than lengths supported by the first format, wherein the BFT data unit is for transmitting PHY beamforming training information. Information to indicate the BFT data unit conforms to the second format is transmitted to a receiving device. The BFT data unit is generated according to the second format, wherein the BFT data unit includes BFT information elements. The BFT data unit is then transmitted to the receiving device.
摘要翻译：在其中通信设备利用符合第一格式的数据单元交换信息的无线通信系统中，发送符合第二格式的波束形成训练（BFT）数据单元，其中所述BFT数据单元的长度短于所支持的长度通过第一格式，其中BFT数据单元用于发送PHY波束形成训练信息。用于指示符合第二格式的BFT数据单元的信息被发送到接收设备。 BFT数据单元根据第二格式生成，其中BFT数据单元包括BFT信息元素。然后将BFT数据单元发送到接收设备。

5. 发明授权

US08195112B1 Time-reversal-based communication 有权
标题翻译：基于时间反转的沟通
公开(公告)号：US08195112B1
公开(公告)日：2012-06-05
申请号：US12481884
申请日：2009-06-10
申请人： Hongyuan Zhang , Arul Durai Murugan Palanivelu , Rohit U. Nabar , Songping Wu , Hui-Ling Lou
发明人： Hongyuan Zhang , Arul Durai Murugan Palanivelu , Rohit U. Nabar , Songping Wu , Hui-Ling Lou
IPC分类号： H01Q11/12 , H04B1/04
CPC分类号： H04W52/225 , H04W52/226
摘要： Time-reversal filtering may be used to temporally focus a signal to be transmitted. Power can be reduced at the transmitter so that the temporally focused signal is within spectral mask requirements. In one embodiment, the effect of the time-reversal filter on the power spectral density for a particular transmitted signal can be calculated and the predicted power spectral density can be compared to the permitted spectral mask to identify violations, if any, of the spectral mask. The transmitter power can then be reduced by the amount of the violation. In another embodiment, a set of different time-reversal filters that meet the spectral mask requirements can be provided in advance, and the most appropriate filter—e.g., the one with the best signal-to-noise ratio for the particular signal—can be chosen from the set of filters.
摘要翻译：可以使用时间反转滤波来暂时聚焦待传输的信号。在发射机处可以降低功率，使得时间聚焦的信号在频谱掩模要求之内。在一个实施例中，可以计算时间反转滤波器对于特定发射信号的功率谱密度的影响，并且可以将预测的功率谱密度与允许的光谱掩模进行比较以识别光谱掩模（如果有的话）。然后可以将发射机功率减少违规量。在另一个实施例中，可以预先提供满足频谱掩模要求的一组不同的时间反转滤波器，并且最合适的滤波器（例如，对于特定信号具有最佳信噪比的滤波器）可以是从一组过滤器中选择。

6. 发明申请

US20100054223A1 Physical Layer Data Unit Format 有权
标题翻译：物理层数据单元格式
公开(公告)号：US20100054223A1
公开(公告)日：2010-03-04
申请号：US12548205
申请日：2009-08-26
申请人： Hongyuan Zhang , Rohit U. Nabar , Manyuan Shen , Songping Wu , Hui-Ling Lou , Yong Liu
发明人： Hongyuan Zhang , Rohit U. Nabar , Manyuan Shen , Songping Wu , Hui-Ling Lou , Yong Liu
IPC分类号： H04W4/00
CPC分类号： H04W16/28 , H04L25/03343 , H04L27/2613 , H04L2025/03426 , H04L2025/03789 , H04L2025/03815
摘要： In a wireless communication system wherein communication devices exchange information utilizing data units that conform to a first format, a beamforming training (BFT) data unit that conforms to a second format is transmitted, wherein a length of the BFT data unit is shorter than lengths supported by the first format, wherein the BFT data unit is for transmitting PHY beamforming training information. Information to indicate the BFT data unit conforms to the second format is transmitted to a receiving device. The BFT data unit is generated according to the second format, wherein the BFT data unit includes BFT information elements. The BFT data unit is then transmitted to the receiving device.
摘要翻译：在其中通信设备利用符合第一格式的数据单元交换信息的无线通信系统中，发送符合第二格式的波束形成训练（BFT）数据单元，其中所述BFT数据单元的长度短于所支持的长度通过第一格式，其中BFT数据单元用于发送PHY波束形成训练信息。用于指示符合第二格式的BFT数据单元的信息被发送到接收设备。 BFT数据单元根据第二格式生成，其中BFT数据单元包括BFT信息元素。然后将BFT数据单元发送到接收设备。

7. 发明申请

US20100008436A1 Physical Layer Frame Format Design for Wideband Wireless Communications Systems 有权
标题翻译：宽带无线通信系统的物理层帧格式设计
公开(公告)号：US20100008436A1
公开(公告)日：2010-01-14
申请号：US12489865
申请日：2009-06-23
申请人： Hongyuan Zhang , Rohit U. Nabar , Arul Durai Murugan Palanivelu , Hui-Ling Lou , Songping Wu
发明人： Hongyuan Zhang , Rohit U. Nabar , Arul Durai Murugan Palanivelu , Hui-Ling Lou , Songping Wu
IPC分类号： H04L27/28
CPC分类号： H04L27/2649 , H04L1/0072 , H04L1/0079 , H04L5/0007 , H04L5/0092 , H04L25/0204 , H04L25/022 , H04L27/0008 , H04L27/0012 , H04L27/2601 , H04L27/2602
摘要： Systems and methods are provided for processing a payload portion of a received signal in a single carrier mode or a multiple carrier mode based on a portion of the received signal. A single carrier signaling portion is received at a first rate, and whether the payload portion of the signal is a single carrier signal or a multiple carrier signal is detected from the received single carrier signaling portion. The payload portion of the received signal is received at the first rate and demodulated in a single carrier mode if the detecting determines that the payload portion of the received signal is a single carrier signal, and the payload portion of the received signal is demodulated in a multiple carrier mode if the detecting determines that the payload portion of the received signal is a multiple carrier signal.
摘要翻译：提供了系统和方法，用于基于接收信号的一部分，以单载波模式或多载波模式处理接收信号的有效载荷部分。以第一速率接收单载波信令部分，以及信号的有效载荷部分是单载波信号还是从所接收的单载波信令部分检测多载波信号。如果检测结果确定接收信号的有效载荷部分是单载波信号，则以第一速率接收接收信号的有效载荷部分并以单载波模式进行解调，并且接收信号的有效载荷部分被解调为多载波模式，如果检测确定接收信号的有效载荷部分是多载波信号。

8. 发明授权

US09924512B1 OFDMA with block tone assignment for WLAN 有权
公开(公告)号：US09924512B1
公开(公告)日：2018-03-20
申请号：US12730651
申请日：2010-03-24
申请人： Hongyuan Zhang , Rohit U. Nabar , Hui-Ling Lou
发明人： Hongyuan Zhang , Rohit U. Nabar , Hui-Ling Lou
IPC分类号： H04W4/00 , H04W72/04 , H04L5/00 , H04W84/12
CPC分类号： H04W72/0453 , H04L5/0007 , H04L5/003 , H04W84/12
摘要： A plurality of different orthogonal frequency division multiplexing (OFDM) sub-channel blocks are assigned to a plurality of devices including a first device and a second device. The plurality of OFDM sub-channel blocks includes a first OFDM sub-channel block assigned to the first device and a second OFDM sub-channel block assigned to the second device. Data for the first device and data for the second device are received. OFDM data units are generated, wherein data for the first device is modulated on sub-channels in the first OFDM sub-channel block and data for the second device is modulated on sub-channels in the second OFDM sub-channel block. At least one of the OFDM sub-channel blocks is formatted to substantially conform to a physical layer specification of a WLAN communication protocol having a maximum channel bandwidth smaller than a bandwidth of the generated OFDM data units.

9. 发明授权

US08897394B1 Methods and apparatus for adaptively selecting a communications mode in high frequency systems 有权
标题翻译：用于在高频系统中自适应选择通信模式的方法和装置
公开(公告)号：US08897394B1
公开(公告)日：2014-11-25
申请号：US12400442
申请日：2009-03-09
申请人： Rohit U. Nabar , Hongyuan Zhang , Arul Durai Murugan Palanivelu , Hui-Ling Lou , Songping Wu
发明人： Rohit U. Nabar , Hongyuan Zhang , Arul Durai Murugan Palanivelu , Hui-Ling Lou , Songping Wu
IPC分类号： H03K9/00
CPC分类号： H04W72/085 , H04L5/0007 , H04L5/0023 , H04L5/0028 , H04L5/0069 , H04L5/0085 , H04L25/0204 , H04L25/0228 , H04L27/0008 , H04L27/261 , H04W24/10 , H04W88/06
摘要： Methods and apparatus are provided for adaptively selecting a communications mode in high frequency systems. A first dual-mode device having capabilities of using two or more high frequency communications modes, such as OFDM and SC modulation, may transmit a signal to a second dual-mode device with the same capabilities. The second dual-mode device may compute a channel characteristic associated with a high frequency communications channel and select an optimal high frequency communications mode. The second dual-mode device may transmit information indicative of the channel characteristic or the selected communications mode to the first dual-mode device. The first dual-mode device may select and operate using the optimal high frequency communications mode based on the information received from the second dual-mode device. The first and second dual-mode devices may communicate using the selected high frequency communications mode.
摘要翻译：提供了用于在高频系统中自适应地选择通信模式的方法和装置。具有使用诸如OFDM和SC调制之类的两个或多个高频通信模式的能力的第一双模设备可以将信号发送到具有相同能力的第二双模设备。第二双模设备可以计算与高频通信信道相关联的信道特性，并选择最佳高频通信模式。第二双模设备可以向第一双模设备发送指示信道特性或所选通信模式的信息。第一双模设备可以基于从第二双模设备接收的信息，使用最佳高频通信模式来选择和操作。第一和第二双模式设备可以使用所选择的高频通信模式进行通信。

10. 发明申请

US20130235908A1 APPARATUS FOR GENERATING SPREADING SEQUENCES AND DETERMINING CORRELATION 审中-公开
标题翻译：用于生成扩展序列和确定相关性的装置
公开(公告)号：US20130235908A1
公开(公告)日：2013-09-12
申请号：US13771596
申请日：2013-02-20
申请人： Hongyuan Zhang , Rohit U. Nabar , Songping Wu , Hui-Ling Lou
发明人： Hongyuan Zhang , Rohit U. Nabar , Songping Wu , Hui-Ling Lou
IPC分类号： H04B1/707
CPC分类号： H04B1/707 , H04J13/0014 , H04J13/10 , H04L27/2613 , H04L27/262
摘要： A circuit for use in a complementary Golay sequence generator or in a complementary Golay sequence correlator includes an input configured to receive an input signal, a set of delay elements, including delay elements corresponding to respective delays of 1, 2, 4, 8, 16, 32, and 64, and a set of multipliers interconnected with the input and the set of delay elements. The set of multipliers is configured to apply weight factors, and the weight factors define the sequence 1,1,−1,1,−1,1,−1. The circuit also includes a pair of outputs configured to output, in response to the input signal, one of (i) a pair of complementary Golay sequences or (ii) a pair of correlation output signals, using (a) the set of delay elements and (b) the set of weight multipliers.
摘要翻译：用于互补Golay序列发生器或互补Golay序列相关器的电路包括被配置为接收输入信号的输入，一组延迟元件，包括对应于1,2,4,8,16的各个延迟的延迟元件，32和64，以及与输入和该组延迟元件互连的一组乘法器。乘数组被配置为应用权重因子，权重因子定义了序列1,1,1,1,1,1,1。电路还包括一对输出，其被配置为响应于输入信号输出（i）一对互补格雷序列中的一个或（ii）一对相关输出信号，使用（a）该组延迟元件和（b）一组权重乘数。

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