公开(公告)号：US08335167B1

公开(公告)日：2012-12-18

申请号：US12698810

申请日：2010-02-02

申请人： Hongyuan Zhang ,  Hui-Ling Lou ,  Yong Liu ,  Songping Wu

发明人： Hongyuan Zhang ,  Hui-Ling Lou ,  Yong Liu ,  Songping Wu

IPC分类号： H04B7/00

CPC分类号： H04B7/0617 ,  H04B7/0626 ,  H04B7/0634

摘要： Refining beamforming techniques for use in a communication system. In one embodiment, a method for beamforming in a communication system includes generating multiple training signals to be transmitted via multiple antennas over a communication channel, including applying a different antenna weight vector (AWV) to each of the multiple training signals. The method further includes receiving feedback generated using the multiple training signals, where the feedback includes a transmitter AWV for use with the multiple antennas and/or channel state information (CSI) descriptive of the communication channel.

摘要翻译： 用于通信系统的优化波束成形技术。 在一个实施例中，在通信系统中用于波束成形的方法包括：生成将通过通信信道经由多个天线发送的多个训练信号，包括对多个训练信号中的每一个应用不同的天线权重向量（AWV）。 该方法还包括接收使用多个训练信号产生的反馈，其中反馈包括用于与多个天线一起使用的发射机AWV和/或描述通信信道的信道状态信息（CSI）。

公开(公告)号：US08886755B1

公开(公告)日：2014-11-11

申请号：US12963053

申请日：2010-12-08

申请人： Yong Liu ,  Hongyuan Zhang

发明人： Yong Liu ,  Hongyuan Zhang

IPC分类号： H04B7/00 ,  H04Q7/00 ,  H04Q7/24

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.

摘要翻译： 第一通信设备确定多个第二通信设备中的每个第二通信设备具有要发送到第一通信设备的相应数据。 第一通信设备在第一通信设备的发送机会期间内向多个第二通信设备发送请求以同时向第一通信设备发送数据。 第一通信设备在第一通信设备的发送机会期间期间接收由多个第二通信设备同时发送的数据。

公开(公告)号：US08526892B2

公开(公告)日：2013-09-03

申请号：US13610654

申请日：2012-09-11

申请人： Hongyuan Zhang ,  Hui-Ling Lou ,  Rohit U. Nabar ,  Yong Liu

发明人： Hongyuan Zhang ,  Hui-Ling Lou ,  Rohit U. Nabar ,  Yong Liu

IPC分类号： H04B1/00 ,  H04B7/00

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 a wireless communication device(s) to determine characteristics of spatial wireless channels, the sounding packet being based on a spatial mapping matrix; receiving a feedback packet(s) from the device(s), the feedback packet(s) being indicative of one or more feedback matrices, the one or more feedback matrices being derived from wireless channel estimations that are based on received versions of the sounding packet; generating spatially steered data packets based on multiple data streams and one or more steering matrices, which are based on the spatial mapping matrix and the one or more feedback matrices; and transmitting a frame that includes the spatially steered data packets to the device(s). The spatially steered data packets can concurrently provide the streams respectively within the frame to the device(s) 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以确定空间无线信道的特性，所述探测分组基于空间映射矩阵; 从所述设备接收反馈分组，所述反馈分组指示一个或多个反馈矩阵，所述一个或多个反馈矩阵从基于所述发声的所接收的版本的无线信道估计导出 包; 基于多个数据流和基于所述空间映射矩阵和所述一个或多个反馈矩阵的一个或多个导向矩阵来生成空间转向数据分组; 以及将包括所述空间转向数据分组的帧发送到所述设备。 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同时提供流到设备的流。

公开(公告)号：US20130044688A1

公开(公告)日：2013-02-21

申请号：US13586704

申请日：2012-08-15

申请人： Yong Liu ,  Harish Ramamurthy ,  Hongyuan Zhang

发明人： Yong Liu ,  Harish Ramamurthy ,  Hongyuan Zhang

IPC分类号： H04W74/04 ,  H04W4/00

CPC分类号： H04L27/2613 ,  H04L5/0053 ,  H04L5/0091 ,  H04L27/0006 ,  H04L27/2602 ,  H04W8/26 ,  H04W28/06 ,  H04W72/08 ,  H04W84/12

摘要： In a method for generating a data unit for transmission in a wireless network, a physical layer (PHY) preamble is generated. A field to indicate whether an acknowledgment data unit is intended to follow the data unit is generated and included in the PHY preamble. A media access control layer (MAC) header is generated, and the data unit is generated to include the PHY preamble and the MAC header. The data unit is transmitted.

摘要翻译： 在用于生成用于在无线网络中传输的数据单元的方法中，生成物理层（PHY）前导码。 用于指示确认数据单元是否旨在跟随数据单元的字段被生成并包括在PHY前导码中。 生成媒体访问控制层（MAC）报头，并且生成数据单元以包括PHY前导码和MAC报头。 发送数据单元。

公开(公告)号：US20130044687A1

公开(公告)日：2013-02-21

申请号：US13586678

申请日：2012-08-15

申请人： Yong Liu ,  Harish Ramamurthy ,  Hongyuan Zhang

发明人： Yong Liu ,  Harish Ramamurthy ,  Hongyuan Zhang

IPC分类号： H04W8/26

CPC分类号： H04L27/2613 ,  H04L5/0053 ,  H04L5/0091 ,  H04L27/0006 ,  H04L27/2602 ,  H04W8/26 ,  H04W28/06 ,  H04W72/08 ,  H04W84/12

摘要： In a method for transmitting a data unit in a wireless communication network, a physical layer (PHY) preamble and a media access control layer (MAC) header are generated. In generating the MAC header, a first address field to include a first address and a second address field to include a second address are generated. The first, not globally unique, address indicates a communication device for which the data unit is intended or a communication device that is transmitting the data unit. The second address field indicates the other one of a communication device for which the data unit is intended or a communication device that is transmitting the data unit. The first address field and the second address field are included in the MAC header. The MAC header omits a globally unique address corresponding to the first address of the first address field.

摘要翻译： 在用于在无线通信网络中发送数据单元的方法中，生成物理层（PHY）前导码和媒体访问控制层（MAC）报头。 在生成MAC报头时，生成包括第一地址和第二地址字段以包括第二地址的第一地址字段。 第一个而不是全球唯一的地址指示数据单元所针对的通信设备或正在发送数据单元的通信设备。 第二地址字段指示数据单元所针对的通信设备中的另一个或正在发送数据单元的通信设备。 第一地址字段和第二地址字段包括在MAC报头中。 MAC标头省略与第一地址字段的第一地址相对应的全局唯一地址。

公开(公告)号：US08270909B2

公开(公告)日：2012-09-18

申请号：US12750636

申请日：2010-03-30

申请人： Hongyuan Zhang ,  Hui-Ling Lou ,  Rohit U. Nabar ,  Yong Liu

发明人： Hongyuan Zhang ,  Hui-Ling Lou ,  Rohit U. Nabar ,  Yong Liu

IPC分类号： H04B1/00 ,  H04B7/00

CPC分类号： H04B7/0456 ,  H04B7/0413 ,  H04B7/0617 ,  H04B7/0619 ,  H04B7/0626 ,  H04B7/0634 ,  H04B7/0697 ,  H04L5/0048

摘要： The present disclosure includes systems, apparatuses, and techniques relating to wireless local area network devices. Systems, apparatuses, and techniques include communicating with multiple wireless communication devices to determine characteristics of spatial wireless channels, determining steering matrices based on one or more outputs of the communicating, and transmitting signals that concurrently provide data to the wireless communication devices via different spatial wireless channels. The signals can be spatially steered to the wireless communication devices based on the steering matrices.

摘要翻译： 本公开包括与无线局域网设备相关的系统，设备和技术。 系统，设备和技术包括与多个无线通信设备通信以确定空间无线信道的特性，基于通信的一个或多个输出来确定导向矩阵，以及发送通过不同的空间无线连接向无线通信设备提供数据的信号 频道 可以基于导向矩阵将信号空间转向无线通信设备。

公开(公告)号：US20100248635A1

公开(公告)日：2010-09-30

申请号：US12750636

申请日：2010-03-30

申请人： Hongyuan Zhang ,  Hui-Ling Lou ,  Rohit U. Nabar ,  Yong Liu

发明人： Hongyuan Zhang ,  Hui-Ling Lou ,  Rohit U. Nabar ,  Yong Liu

IPC分类号： H04B15/00 ,  H04B17/00

CPC分类号： H04B7/0456 ,  H04B7/0413 ,  H04B7/0617 ,  H04B7/0619 ,  H04B7/0626 ,  H04B7/0634 ,  H04B7/0697 ,  H04L5/0048

摘要： The present disclosure includes systems, apparatuses, and techniques relating to wireless local area network devices. Systems, apparatuses, and techniques include communicating with multiple wireless communication devices to determine characteristics of spatial wireless channels, determining steering matrices based on one or more outputs of the communicating, and transmitting signals that concurrently provide data to the wireless communication devices via different spatial wireless channels. The signals can be spatially steered to the wireless communication devices based on the steering matrices.

摘要翻译： 本公开包括与无线局域网设备相关的系统，设备和技术。 系统，设备和技术包括与多个无线通信设备通信以确定空间无线信道的特性，基于通信的一个或多个输出来确定导向矩阵，以及发送通过不同的空间无线连接向无线通信设备提供数据的信号 频道 可以基于导向矩阵将信号空间转向无线通信设备。

公开(公告)号：US20100103045A1

公开(公告)日：2010-04-29

申请号：US12605978

申请日：2009-10-26

申请人： Yong Liu ,  Hongyuan Zhang ,  Songping Wu

发明人： Yong Liu ,  Hongyuan Zhang ,  Songping Wu

IPC分类号： H01Q3/00

CPC分类号： H04B7/04 ,  H04B7/0617 ,  H04B7/0632 ,  H04L43/0847 ,  H04W16/28 ,  H04W84/02

摘要： A plurality of beacon data units are generated, and each beacon data unit in the plurality of beacon data units includes an indication that the beacon data unit can be used for transmit beamforming training. The plurality of beacon data units are transmitted via a plurality of antennas during a timeslot reserved for the transmission of beacons. A different beamforming vector is applied to a beamforming network as each beacon data unit is transmitted. In another aspect, a first beamforming training transmission corrupted by a collision is received. A first station to which the first beamforming training transmission corresponds is determined based on the first beamforming training transmission corrupted by the collision. In response to determining the first station, a signal is transmitted to the first station to prompt the first station to transmit a second beamforming training transmission.

摘要翻译： 生成多个信标数据单元，并且多个信标数据单元中的每个信标数据单元包括信标数据单元可用于发送波束形成训练的指示。 在为发送信标而保留的时隙期间，经由多个天线发送多个信标数据单元。 当发送每个信标数据单元时，将不同的波束形成向量应用于波束形成网络。 在另一方面，接收到被冲突破坏的第一波束形成训练传输。 基于由碰撞破坏的第一波束形成训练传输来确定第一波束形成训练传输对应的第一站。 响应于确定第一站，将信号发送到第一站，以提示第一站发送第二波束形成训练传输。

公开(公告)号：US10311424B2

公开(公告)日：2019-06-04

申请号：US13885218

申请日：2010-12-09

申请人： Yong Liu ,  Xiaoxun Zhu ,  Jie Ren

发明人： Yong Liu ,  Xiaoxun Zhu ,  Jie Ren

IPC分类号： G06Q20/32 ,  G07G1/00 ,  G06Q30/06

摘要： An indicia encoding system is disclosed herein that encodes integrated information on products and/or services selected for purchase and payment information for purchasing the selected products and/or services, in accordance with a variety of embodiments involving various methods, devices and systems. In one illustrative embodiment, a method may include entering purchase order information via one or more input/output components. The purchase order may include an indication for one or more products and/or one or more services. The method may also include entering payment information, including information on a method of payment, via one or more input/output components. The method may also include generating a machine-readable indicia that encodes both the purchase order information and the payment information, with the payment information in an encrypted form; and displaying the machine-readable indicia on a screen.

公开(公告)号：US09479552B2

公开(公告)日：2016-10-25

申请号：US13483329

申请日：2012-05-30

申请人： Ming Chen ,  Xiwang Yang ,  Yong Liu ,  Lei Zhang

发明人： Ming Chen ,  Xiwang Yang ,  Yong Liu ,  Lei Zhang

IPC分类号： G06F15/16 ,  H04L29/06 ,  G06Q10/10 ,  H04L29/08 ,  G06F12/00

CPC分类号： H04L65/4084 ,  G06Q10/10 ,  H04L67/22 ,  H04L67/2852 ,  H04L67/306

摘要： A device includes a processor. The processor is configured to determine a hit time for each of a plurality of content items based on at least one of users' history of access to the content items on content distribution clusters in a content distribution network, the users' past ratings of the content items, and social network information associated with the users. The hit time of a content item indicates a number of times that the content item is likely to be accessed by the users. The processor is further configured to compute caching priorities of the content items based on a caching policy of the device and the determined hit times, and initiate a redistribution, over a network, of the plurality of content items over the content distribution clusters of the content distribution network based on the caching priorities.

摘要翻译： 设备包括处理器。 处理器被配置为基于用户对内容分发网络中的内容分发群集上的内容项的访问历史中的至少一个来确定多个内容项中的每一个的命中时间，用户的内容的过去评级 项目和与用户相关联的社交网络信息。 内容项的命中时间表示内容项目可能被用户访问的次数。 所述处理器还被配置为基于所述设备的高速缓存策略和所确定的命中次数来计算所述内容项的高速缓存优先级，以及通过所述内容的内容分发集群发起所述多个内容项目在网络上的再分配 分销网络基于缓存优先级。