公开(公告)号：US08913515B2

公开(公告)日：2014-12-16

申请号：US13313920

申请日：2011-12-07

申请人： Ravishankar H. Mahadevappa ,  Thomas E. Pare, Jr. ,  Kiran Uln

发明人： Ravishankar H. Mahadevappa ,  Thomas E. Pare, Jr. ,  Kiran Uln

IPC分类号： G01R31/08 ,  H04W4/00 ,  H04W24/10 ,  H04W84/12

CPC分类号： H04W24/10 ,  H04W84/12

摘要： Embodiments for improving multi-user downlink reception quality in WLANS are disclosed. In one embodiment, a method includes receiving, at a station, at least one multi-user sounding packet from an access point. The method also includes determining a sum of desired signal strengths from the at least one received sounding packet. The method also includes determining a sum of interference signal strengths from the at least one received sounding packet. The method also includes generating link quality metrics based on a ratio of the sum of desired signal strengths to the sum of interference signal strengths.

摘要翻译： 公开了用于改善WLANS中的多用户下行接收质量的实施例。 在一个实施例中，一种方法包括在站处从接入点接收至少一个多用户探测分组。 该方法还包括从至少一个接收到的探测分组确定期望的信号强度之和。 该方法还包括确定来自至少一个接收的探测分组的干扰信号强度之和。 该方法还包括基于期望信号强度之和与干扰信号强度之和的比率来产生链路质量度量。

公开(公告)号：US08824386B2

公开(公告)日：2014-09-02

申请号：US13041177

申请日：2011-03-04

申请人： Thomas E. Pare, Jr. ,  Cheng-Hsuan Wu ,  Yung-Szu Tu ,  Kiran Uln ,  Ravishankar H. Mahadevappa

发明人： Thomas E. Pare, Jr. ,  Cheng-Hsuan Wu ,  Yung-Szu Tu ,  Kiran Uln ,  Ravishankar H. Mahadevappa

IPC分类号： H04W4/00 ,  H04W4/08 ,  H04W4/20 ,  H04W8/18 ,  H04B7/04

CPC分类号： H04B7/0456 ,  H04B7/0452 ,  H04B7/0465 ,  H04B7/0626 ,  H04W4/08 ,  H04W4/21 ,  H04W8/186 ,  H04W24/00 ,  H04W24/10

摘要： A method and system is disclosed for grouping the multiple stations connected to an access point (AP). The system and method comprise sending a sounding packet to a plurality of stations, wherein the stations may be all or part of the stations that are located within the range of the AP. The stations that receive the sounding packets respond to the AP, and the AP determines the channel state information (CSI) from the responses. According to the CSI, the AP divides the multiple stations into several groups. According to an embodiment of the present invention, a confirmation step is performed to each group of stations, respectively. The AP sends a second sounding packet to each group of stations, and verifies the CSI between each station group by group. Therefore, the method and system provides for monitoring the validation of each group by periodically sending sounding packets to each group.

摘要翻译： 公开了用于对连接到接入点（AP）的多个站进行分组的方法和系统。 该系统和方法包括向多个站发送探测分组，其中所述站可以是位于AP范围内的站的全部或部分。 接收到探测包的站响应AP，AP确定响应中的信道状态信息（CSI）。 根据CSI，AP将多个站分成几个组。 根据本发明的实施例，分别对每组电台执行确认步骤。 AP向每组站发送第二个探测包，并按组验证每个站组之间的CSI。 因此，该方法和系统通过周期性地向每个组发送声音分组来提供对每个组的验证的监视。

公开(公告)号：US08804681B2

公开(公告)日：2014-08-12

申请号：US13175746

申请日：2011-07-01

申请人： Kiran Uln ,  Thomas E. Pare, Jr. ,  Ravishankar H. Mahadevappa

发明人： Kiran Uln ,  Thomas E. Pare, Jr. ,  Ravishankar H. Mahadevappa

IPC分类号： H04W4/00

CPC分类号： H04W28/065 ,  H04L1/0069

摘要： A method and system utilized in a wireless communication system transmitting and receiving a multi-user packet is disclosed. The communication system includes a transmitter and a plurality of users in communication therewith. The method and system comprise determining a lowest coding scheme for transmitting the packet; and deriving a coding rate for the efficient transmission of the packet from a standard coding rate by de-puncturing bits in the packet. A system and method in accordance with the present invention provides for an efficient utilization of packet length, and improves the reliability by improving SNR, by lowering the MCS, un-puncturing, and/or repetition. More efficient packed data rates are also provided and both Tx and Rx compute parameters independently.

摘要翻译： 公开了一种在发送和接收多用户分组的无线通信系统中使用的方法和系统。 通信系统包括与其通信的发射机和多个用户。 该方法和系统包括确定用于发送分组的最低编码方案; 并且通过对分组中的比特进行去穿孔来导出用于从标准编码率有效传输分组的编码率。 根据本发明的系统和方法提供了对分组长度的有效利用，并且通过降低MCS，非穿孔和/或重复来提高SNR，从而提高了可靠性。 还提供了更高效的打包数据速率，并且Tx和Rx独立地计算参数。

公开(公告)号：US08868124B2

公开(公告)日：2014-10-21

申请号：US13599970

申请日：2012-08-30

申请人： Kiran Uln ,  Gary Anwyl ,  Thomas E. Pare, Jr.

发明人： Kiran Uln ,  Gary Anwyl ,  Thomas E. Pare, Jr.

IPC分类号： H04B7/00 ,  H04W52/24 ,  H04L5/00 ,  H04W52/34 ,  H04B7/04 ,  H04B7/06

CPC分类号： H04W52/24 ,  H04B7/0408 ,  H04B7/0426 ,  H04B7/0434 ,  H04B7/0617 ,  H04L5/006 ,  H04W52/241 ,  H04W52/346 ,  H04W52/42

摘要： A method, system, and computer program product for beamforming in a wireless communication system is disclosed. The method, system, and computer program product comprise a plurality of transmit antennas for a transmitter and at least one receive antenna for a receiver. The method, system, and computer program product comprise: initiating beamforming on a communication channel between the plurality of transmit antennas and the at least one receive antenna. The communication channel includes two data streams. A received signal to noise ratio (SNR) on one of the two data streams is weaker than a received SNR of the other data stream. The method, system, and computer program product include reallocating the transmit power between the stronger stream and the weaker stream to provide improved channel performance.

摘要翻译： 公开了一种在无线通信系统中用于波束成形的方法，系统和计算机程序产品。 方法，系统和计算机程序产品包括用于发射机的多个发射天线和用于接收机的至少一个接收天线。 所述方法，系统和计算机程序产品包括：在所述多个发射天线与所述至少一个接收天线之间的通信信道上发起波束成形。 通信信道包括两个数据流。 在两个数据流之一上的接收信噪比（SNR）比其他数据流的接收SNR更弱。 方法，系统和计算机程序产品包括在较强流和较弱流之间重新分配发射功率，以提供改善的信道性能。

公开(公告)号：US08976674B2

公开(公告)日：2015-03-10

申请号：US13026128

申请日：2011-02-11

申请人： Thomas E. Pare, Jr. ,  Kiran Uln

发明人： Thomas E. Pare, Jr. ,  Kiran Uln

IPC分类号： H04L12/26 ,  H04L27/00 ,  H04L27/26

CPC分类号： H04L27/0012 ,  H04L27/2613

摘要： A method and system in accordance with the present invention presents a new packet structure and an improved method for detecting the packet. The method and system comprise adding an additional field to the packet structure to allow for a sufficient time to process a very high throughput (VHT) signal field; and enabling the detection of the VHT signal field of the packet structure. The VHT signal field is distinguishable from other signal fields and the VHT signal field allows for a backward compatibility with other devices.

摘要翻译： 根据本发明的方法和系统提出了一种用于检测分组的新分组结构和改进的方法。 该方法和系统包括向分组结构添加附加字段以允许足够的时间来处理非常高的吞吐量（VHT）信号字段; 并且能够检测分组结构的VHT信号字段。 VHT信号场与其他信号场区分开，VHT信号域允许与其他设备的向后兼容。

公开(公告)号：US08228806B2

公开(公告)日：2012-07-24

申请号：US12563979

申请日：2009-09-21

申请人： Thomas Edward Pare, Jr. ,  Kiran Uln ,  Peter Loc

发明人： Thomas Edward Pare, Jr. ,  Kiran Uln ,  Peter Loc

IPC分类号： H04L12/26 ,  H04W84/02

CPC分类号： H04L27/0012 ,  H04L1/0091 ,  H04L27/2613

摘要： A method and system of communicating packets and detecting packets are disclosed. In a first aspect, the method and system comprise enabling the detection of a very high throughput (VHT) signal field. The VHT signal field is distinguishable from other signal fields, wherein the VHT signal field allows for a backward compatibility with other devices. In a second aspect, the method and system comprise initializing the device to be in receive mode and receiving at least one signal field symbol and detecting the presence of additional signal field symbols. The method and system further include distinguishing a very high throughput (VHT) signal field from other signal field symbols and decoding the VHT signal field parameters uniquely describing the VHT packet format.

摘要翻译： 公开了传送数据包和检测数据包的方法和系统。 在第一方面，该方法和系统包括能够检测非常高吞吐量（VHT）信号场。 VHT信号域与其他信号场区分开，其中VHT信号域允许与其它设备的向后兼容性。 在第二方面，所述方法和系统包括将设备初始化为处于接收模式并且接收至少一个信号字段符号并检测附加信号字段符号的存在。 该方法和系统还包括将非常高的吞吐量（VHT）信号字段与其他信号字段符号区分开来，并解码唯一描述VHT分组格式的VHT信号字段参数。

公开(公告)号：US10110361B2

公开(公告)日：2018-10-23

申请号：US15123247

申请日：2015-03-04

申请人： MEDIATEK INC. ,  Tianyu Wu ,  Jianhan Liu ,  Kiran Uln ,  Thomas Edward Pare, Jr.

发明人： Tianyu Wu ,  Jianhan Liu ,  Kiran Uln ,  Thomas Edward Pare, Jr.

IPC分类号： H04L5/00 ,  H04L25/02 ,  H04B17/24 ,  H04B17/336 ,  H04B7/0452 ,  H04B7/06 ,  H04L1/16 ,  H04B7/0417 ,  H04W72/04 ,  H04W72/08

摘要： A method of sub-channel feedback in OFDMA systems is provided. A wireless receiving device (STA) receives a radio signal from a transmitting device (AP) over a wide channel in an OFDMA system. The radio signal is transmitted over multiple sub-channels of the wide channel. The STA estimates channel quality information based on the received radio signal for each sub-channel. The STA then sends feedback information to the transmitting device. The feedback information comprises the estimated channel quality information for a selected subset of sub-channels from the wide channel based on a predefined rule. In one embodiment, the feedback information is embedded within an ACK/BA frame or is carried in a frame immediately subsequent to the ACK/BA frame.

公开(公告)号：US08411781B2

公开(公告)日：2013-04-02

申请号：US12483204

申请日：2009-06-11

申请人： Kiran Uln ,  Chih Liang Chang

发明人： Kiran Uln ,  Chih Liang Chang

IPC分类号： H04B7/02 ,  H04L1/02

CPC分类号： H04L25/0246 ,  H04L5/001 ,  H04L5/0035 ,  H04L25/03178 ,  H04L25/03203 ,  H04L2025/03426

摘要： Varying embodiments of the present invention provide a MIMO apparatus, such as a transceiver and a method of operation thereof. In an embodiment, the transceiver employs a parallelized., two-stage pipeline architecture that reduces the overall latency of the system. This reduction in latency translates to cost savings and higher data rates for the same hardware clock speed.

摘要翻译： 本发明的不同实施例提供了诸如收发器的MIMO装置及其操作方法。 在一个实施例中，收发器采用并行化的两级流水线架构，其降低了系统的总体延迟。 延迟的这种减少可以转换为相同硬件时钟速度的成本节省和更高的数据速率。

公开(公告)号：US20090160696A1

公开(公告)日：2009-06-25

申请号：US11963658

申请日：2007-12-21

申请人： Thomas E. PARE ,  Chien-Cheng Tung ,  Kiran Uln

发明人： Thomas E. PARE ,  Chien-Cheng Tung ,  Kiran Uln

IPC分类号： G01S7/42

CPC分类号： G01S7/023 ,  G01S7/021 ,  H04K3/226 ,  H04K3/822 ,  H04K2203/18 ,  H04W16/14

摘要： The present invention relates generally to wireless transceivers, and more particularly but not exclusively to radar detection and avoidance methodologies for wireless devices including transceivers. In one or more implementations, a method for detecting radar operating in the unlicensed 5.25-5.35 and 5.47-10.725 GHz radio bands, using wireless devices, such as WiFi AP, are provided. A WiFi AP is used to automatically detect the presence of radar on all channels in these bands, alert all of its clients, and move to another channel that is known to be devoid of radar using one or more implementations.

摘要翻译： 本发明一般涉及无线收发器，更具体地而非排他地涉及包括收发器的无线设备的雷达检测和回避方法。 在一个或多个实现中，提供了一种使用诸如WiFi AP之类的无线设备来检测在非许可的5.25-5.35和5.47-10.725GHz无线电频带中的雷达操作的方法。 WiFi AP用于自动检测这些频带中所有信道上雷达的存在，提醒其所有客户端，并使用一个或多个实现移动到已知无雷达的另一个信道。

公开(公告)号：US08891689B2

公开(公告)日：2014-11-18

申请号：US13429231

申请日：2012-03-23

申请人： Kiran Uln

发明人： Kiran Uln

IPC分类号： H04L27/06 ,  H04L27/38 ,  H04L1/00 ,  H04L25/02

CPC分类号： H04L27/38 ,  H04B7/086 ,  H04L1/0054 ,  H04L25/0258 ,  H04L25/065 ,  H04L27/2601 ,  H04L27/36

摘要： Embodiments for demodulating data streams are disclosed. In one embodiment, a method includes receiving, at a multiple-input device, a plurality of data streams. The method also includes determining a degree of correlation among the plurality of data streams. The method also includes selecting a demodulator based on the degree of correlation.

摘要翻译： 公开了解调数据流的实施例。 在一个实施例中，一种方法包括在多输入设备处接收多个数据流。 该方法还包括确定多个数据流之间的相关程度。 该方法还包括基于相关度选择解调器。