公开(公告)号：USD913857S1

公开(公告)日：2021-03-23

申请号：US29715308

申请日：2019-11-30

Applicant: Chao Wang ,  Kun Lang ,  Lei Cao ,  Yongqiang Liu

Designer： Chao Wang ,  Kun Lang ,  Lei Cao ,  Yongqiang Liu

公开(公告)号：US20160149935A1

公开(公告)日：2016-05-26

申请号：US14900202

申请日：2013-07-04

Applicant: Yongqiang LIU ,  Shijian LI ,  Jun Qing XIE ,  HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.

Inventor： Yongqiang Liu ,  Shijian Li ,  Jun Qing Xie

IPC: H04L29/06 ,  H04W12/10

CPC classification number: H04W12/08 ,  H04L47/27 ,  H04L47/34 ,  H04L63/10 ,  H04L63/126 ,  H04L63/1416 ,  H04W12/10 ,  H04W12/12 ,  H04W48/14 ,  H04W84/12

Abstract: A first request is sent from a station to an access point. The station receives a first response from the access point that includes a first sequence number, and stores the first sequence number. The station sends a second request to the access point and sets a waiting period for receiving a response from the access point. The station receives a second response from the access point and a third response from a second access point during the waiting period. The second response includes a second sequence number and the third response includes a third sequence number. The station determines that the second response is a legitimate response by comparing the second and third sequence numbers to the first sequence number.

Abstract translation: 第一个请求从站点发送到接入点。 站从接入点接收包括第一序列号的第一响应，并存储第一序列号。 该站向接入点发送第二个请求，并设置从接入点接收响应的等待时间。 在等待期间，站接收来自接入点的第二响应和来自第二接入点的第三响应。 第二响应包括第二序列号，第三响应包括第三序列号。 通过将第二和第三序列号与第一序列号进行比较，站确定第二响应是合法响应。

公开(公告)号：US08411585B2

公开(公告)日：2013-04-02

申请号：US12498878

申请日：2009-07-07

Applicant: Yongqiang Liu ,  Yanlin Luo ,  Songjie Chen ,  Gang Wang

Inventor： Yongqiang Liu ,  Yanlin Luo ,  Songjie Chen ,  Gang Wang

IPC: G01R31/08 ,  G06F11/00 ,  G08C15/00 ,  H04J1/16 ,  H04J3/14 ,  H04L1/00 ,  H04L12/26 ,  H04W4/00 ,  H04W72/00 ,  H04B7/00 ,  H04B1/00 ,  H04B15/00 ,  H04B17/00

CPC classification number: H04W72/082

Abstract: There are disclosed a network interference evaluating method, a dynamic channel assignment method and apparatus used in wireless networks. The dynamic channel assignment method used in a wireless network, comprising steps of: calculating each pair of visual delayed time for each pair of basic service sets based on received signal strength indicators, traffic information and rate information, and evaluating an overall network interference under a current channel allocation based on the calculated visual delayed time; constructing an undirected graph so that each basic service set is located at a vertex, and each connection line between each pair of basic service sets has a weight obtained from the pair of visual delayed time for this pair of basic service sets; coloring the undirected graph to get a new channel allocation approach and an optimized minimal overall network interference under this new channel allocation approach; comparing a difference between the evaluated overall network interference under the current channel allocation and the optimized minimal overall network interference with a predetermined threshold; and changing channel allocation for the basic service sets according to the new channel allocation approach if the difference is larger than the predetermined threshold.

Abstract translation: 公开了一种在无线网络中使用的网络干扰评估方法，动态信道分配方法和装置。 一种在无线网络中使用的动态信道分配方法，包括以下步骤：基于接收到的信号强度指示符，业务信息和速率信息，计算每对基本业务集合的每对视觉延迟时间，以及评估一个 基于计算出的视觉延迟时间的当前频道分配; 构造无向图，使得每个基本服务集位于顶点，并且每对基本服务集之间的每个连接线具有从该对基本服务集合的一对视觉延迟时间获得的权重; 着色无向图，以获得新的信道分配方法，并在此新的信道分配方法下优化最小的总体网络干扰; 将当前信道分配下的所评估的总网络干扰与所述优化的最小总网络干扰之间的差与预定阈值进行比较; 以及如果差值大于预定阈值，则根据新的信道分配方法改变基本业务集的信道分配。

公开(公告)号：US06864971B2

公开(公告)日：2005-03-08

申请号：US10094119

申请日：2002-03-08

Applicant: YouLing Lin ,  A. Kathleen Hennessey ,  Yongqiang Liu ,  Yonghang Fu ,  Masami Yamashita ,  Ichiro Shimomura

Inventor： YouLing Lin ,  A. Kathleen Hennessey ,  Yongqiang Liu ,  Yonghang Fu ,  Masami Yamashita ,  Ichiro Shimomura

IPC: G01N21/95 ,  G01N21/88

CPC classification number: G01N21/9501

Abstract: A system and method for performing optical inspection of structures on the surface of a semiconductor wafer. The wafer surface is illuminated with a polychromatic light source. A multiple-charged couple-device (CCD) camera is positioned to capture light diffracted by the structures on the wafer surface at the first order of diffraction. The captured light is then separated into a plurality of component wavelengths which are directed onto the CCDs. A digital filter creates a plurality of digitized diffractive images of the wafer surface at different component wavelengths. The diffractive images may be integrated and analyzed to detect defects in the structures, or may be, analyzed individually. An image at a particular wavelength may be selected and analyzed by using the known grating pitch of the structures to calculate the wavelength.

Abstract translation: 一种用于对半导体晶片的表面上的结构执行光学检查的系统和方法。 用多色光源照射晶片表面。 定位多电荷耦合器件（CCD）照相机以捕获在第一衍射级上由晶片表面上的结构衍射的光。 然后将捕获的光分离成指向CCD的多个分量波长。 数字滤波器在不同的分量波长处产生晶片表面的多个数字化的衍射图像。 衍射图像可以被整合和分析以检测结构中的缺陷，或者可以单独地分析。 可以通过使用结构的已知光栅间距来选择和分析特定波长的图像以计算波长。

公开(公告)号：US08483089B2

公开(公告)日：2013-07-09

申请号：US13000981

申请日：2010-06-21

Applicant: Yan Hu ,  Yong Xia ,  Yongqiang Liu ,  Quan Huang

Inventor： Yan Hu ,  Yong Xia ,  Yongqiang Liu ,  Quan Huang

IPC: H04W16/02

CPC classification number: H04L12/56 ,  H04L45/121 ,  H04L49/15 ,  H04L67/104

Abstract: The invention provides a server, a method and a system for providing node information for P2P network. A server in a peer-to-peer (P2P) network comprises: a location information storage unit which stores coordinate information indicating a coordinate of each data node in the P2P network in a coordinate system that is created based on communication delays among data nodes in the P2P network; and a node information providing unit which, upon receipt of a request for information on data nodes having a first data item, selects one or more data nodes from data nodes having the first data item based on the coordinate information, and provides information indicating the selected one or more data nodes.

Abstract translation: 本发明提供了一种用于为P2P网络提供节点信息的服务器，方法和系统。 点对点（P2P）网络中的服务器包括：位置信息存储单元，其存储在基于数据节点之间的通信延迟创建的坐标系中的指示P2P网络中每个数据节点的坐标的坐标信息 P2P网络; 以及节点信息提供单元，其在接收到关于具有第一数据项的数据节点的信息的请求时，基于所述坐标信息从具有所述第一数据项的数据节点中选择一个或多个数据节点，并且提供指示所选择的 一个或多个数据节点。

公开(公告)号：US20120243403A1

公开(公告)日：2012-09-27

申请号：US13294636

申请日：2011-11-11

Applicant: Yan HU ,  Yong XIA ,  Yongqiang LIU ,  Quan HUANG

Inventor： Yan HU ,  Yong XIA ,  Yongqiang LIU ,  Quan HUANG

IPC: H04L12/28 ,  H04L12/56

CPC classification number: H04L61/103 ,  H04L45/48 ,  H04L61/2038

Abstract: The present disclosure provides an addressing method, an addressing apparatus, a fabric manager, a switch, and a data routing method for data center networks. The addressing apparatus includes a tree creating unit for, sequentially with each of switches as a root, creating a tree containing all hosts by means of network topology discovery function, to obtain a plurality of trees; a tree selecting unit for selecting a tree having a minimum height among the created plurality of trees; and an address assigning unit for assigning addresses to each of switches and each of hosts in a network with respect to each selected tree having a minimum height. The present disclosure is adaptable to various topologies employed by the data center. The present disclosure can achieve aggregation of locator addresses so that a forwarding table can be shortened, and can achieve load balance of the network.

Abstract translation: 本公开提供了一种用于数据中心网络的寻址方法，寻址装置，结构管理器，交换机和数据路由方法。 寻址装置包括：树生成单元，用于依次以每个交换机为根，通过网络拓扑发现功能创建包含所有主机的树，以获得多个树; 树选择单元，用于选择所生成的多个树中具有最小高度的树; 以及地址分配单元，用于相对于具有最小高度的每个所选树分配地址到每个交换机和网络中的每个主机。 本公开适用于数据中心采用的各种拓扑。 本公开可以实现定位器地址的聚合，从而可以缩短转发表，并且可以实现网络的负载平衡。

公开(公告)号：US08023468B2

公开(公告)日：2011-09-20

申请号：US11850969

申请日：2007-09-06

Applicant: Yongqiang Liu ,  Yanfeng Zhang ,  Yong Xia

Inventor： Yongqiang Liu ,  Yanfeng Zhang ,  Yong Xia

IPC: H04W36/00

CPC classification number: H04W48/12 ,  H04W36/08

Abstract: Methods, devices and system for access point facilitated fast handoff are provided. Each access point (AP) in a wireless local area network is provided with a primary interface and a secondary interface wherein the primary interface performs normal communication with user terminals and broadcasts standard beacon frames on its working channel, and the secondary interface broadcasts extended beacon frames on working channels of neighbor APs sequentially. The extended beacon frame includes at least information of BSSID, SSID, working channel and the like of the primary interface of the corresponding AP. The user terminal may receive the standard beacons from the serving AP it is communicating with and the extended beacons from the neighbor APs, and according to the two kinds of beacons, the terminal may calculate the signal quality with the primary interface of the serving AP and the signal qualities with the neighbor APs at the current position. By an algorithm of comparing the signal qualities of the best neighbor AP and the serving AP, the terminal may accurately and quickly determine whether to perform handoff with minimized cost.

Abstract translation: 提供了接入点的方法，设备和系统，促进了快速切换。 无线局域网中的每个接入点（AP）设置有主接口和次接口，其中主接口与用户终端进行正常通信，并在其工作信道上广播标准信标帧，并且辅助接口广播扩展信标帧 在相邻AP的工作信道上。 扩展信标帧至少包括相应AP的主要接口的BSSID，SSID，工作信道等的信息。 用户终端可以从其正在通信的服务AP接收标准信标，并从相邻AP接收扩展信标，并且根据两种信标，终端可以使用服务AP的主接口来计算信号质量， 与当前位置的邻居AP的信号质量。 通过比较最佳邻居AP和服务AP的信号质量的算法，终端可以准确且快速地确定是否以最小化的成本执行切换。

公开(公告)号：US20110212341A1

公开(公告)日：2011-09-01

申请号：US13008914

申请日：2011-01-19

Applicant: Ting Li ,  Qingchun He ,  Yongqiang Liu

Inventor： Ting Li ,  Qingchun He ,  Yongqiang Liu

IPC: H01L23/495

CPC classification number: H01L23/49541 ,  H01L21/4842 ,  H01L2924/0002 ,  Y10T428/12188 ,  Y10T428/12201 ,  Y10T428/12368 ,  H01L2924/00

Abstract: A lead frame sheet made of an electrically conductive material has lead frames integrally formed on it. Spacing members also are formed from the sheet. A first one of the spacing members is proximal to a first longitudinal edge of the sheet and a second one of the spacing members is proximal to a second longitudinal edge of the sheet. The spacing members extend from an underside surface of the sheet and, in use, space the underside surface from a planar support such as a surface of a heating block.

Abstract translation: 由导电材料制成的引线框架片一体地形成在其上。 间距构件也由片材形成。 间隔构件中的第一个靠近片材的第一纵向边缘，并且间隔构件中的第二个靠近片材的第二纵向边缘。 间隔构件从片材的下侧表面延伸，并且在使用中将下表面从诸如加热块的表面的平面支撑件间隔开。

公开(公告)号：US20080064404A1

公开(公告)日：2008-03-13

申请号：US11850209

申请日：2007-09-05

Applicant: Yanfeng Zhang ,  Yongqiang Liu ,  Yong Xia

Inventor： Yanfeng Zhang ,  Yongqiang Liu ,  Yong Xia

IPC: H04Q7/20

CPC classification number: H04W36/08 ,  H04W36/36 ,  H04W84/12

Abstract: Methods and device for user terminal based fast handoff are provided. User terminal builds a neighbor group list in which possible neighbor access points (APs) are divided into one or more groups. When a handoff needs to be prepared, the user terminal performs intermittently multiple pre-break probing subphases according to the neighbor group list while not breaking connection with a current serving AP. In each PBP subphase, signal qualities of neighbor APs in one group are probed in a manner of active probing. The user terminal selectively performs handoff according to the probed signal qualities of the neighbor APs. The user terminal may build the neighbor group list based on information of neighbor APs derived through overlapped channel scanning or information of neighbor APs received from the serving AP. The neighbor APs belonging to the same group work on the same channel and in each PBP subphase, a group of neighbor APs may be probed by using unicast probe request.

Abstract translation: 提供了基于用户终端快速切换的方法和设备。 用户终端构建邻居组列表，其中可能的邻居接入点（AP）被划分成一个或多个组。 当切换需要准备时，用户终端根据邻居组列表间歇地执行多个预中断探测子时间，而不断开与当前服务AP的连接。 在每个PBP子阶段，一组中相邻AP的信号质量以主动探测的方式进行探测。 用户终端根据相邻AP的探测信号质量有选择地执行切换。 用户终端可以基于通过重叠信道扫​​描导出的相邻AP的信息或从服务AP接收的相邻AP的信息来构建邻居组列表。 属于同一组的邻居AP在同一信道上工作，在每个PBP子时隙中，可以通过使用单播探测请求来探测一组邻居AP。

公开(公告)号：US20080062933A1

公开(公告)日：2008-03-13

申请号：US11850969

申请日：2007-09-06

Applicant: Yongqiang Liu ,  Yanfeng Zhang ,  Yong Xia

Inventor： Yongqiang Liu ,  Yanfeng Zhang ,  Yong Xia

IPC: H04Q7/00

CPC classification number: H04W48/12 ,  H04W36/08

Abstract: Methods, devices and system for access point facilitated fast handoff are provided. Each access point (AP) in a wireless local area network is provided with a primary interface and a secondary interface wherein the primary interface performs normal communication with user terminals and broadcasts standard beacon frames on its working channel, and the secondary interface broadcasts extended beacon frames on working channels of neighbor APs sequentially. The extended beacon frame includes at least information of BSSID, SSID, working channel and the like of the primary interface of the corresponding AP. The user terminal may receive the standard beacons from the serving AP it is communicating with and the extended beacons from the neighbor APs, and according to the two kinds of beacons, the terminal may calculate the signal quality with the primary interface of the serving AP and the signal qualities with the neighbor APs at the current position. By an algorithm of comparing the signal qualities of the best neighbor AP and the serving AP, the terminal may accurately and quickly determine whether to perform handoff with minimized cost.

Abstract translation: 提供了接入点的方法，设备和系统，促进了快速切换。 无线局域网中的每个接入点（AP）设置有主接口和次接口，其中主接口与用户终端进行正常通信，并在其工作信道上广播标准信标帧，并且辅助接口广播扩展信标帧 在相邻AP的工作信道上。 扩展信标帧至少包括相应AP的主要接口的BSSID，SSID，工作信道等的信息。 用户终端可以从其正在通信的服务AP接收标准信标，并从相邻AP接收扩展信标，并且根据两种信标，终端可以利用服务AP的主接口来计算信号质量， 与当前位置的邻居AP的信号质量。 通过比较最佳邻居AP和服务AP的信号质量的算法，终端可以准确且快速地确定是否以最小化的成本执行切换。