公开(公告)号：US20070010261A1

公开(公告)日：2007-01-11

申请号：US11240323

申请日：2005-09-30

申请人： Subrahmanyam Dravida ,  Jay Walton ,  Sanjiv Nanda ,  Shravan Surineni

发明人： Subrahmanyam Dravida ,  Jay Walton ,  Sanjiv Nanda ,  Shravan Surineni

IPC分类号： H04Q7/20

CPC分类号： G01S5/0009 ,  H04L12/5692 ,  H04L67/18 ,  H04L67/306 ,  H04W4/02 ,  H04W4/20 ,  H04W8/245 ,  H04W48/08 ,  H04W48/20 ,  H04W64/00 ,  H04W84/12 ,  H04W88/08

摘要： Embodiments describe methods, systems, and devices that utilize positional information to determine location of other device and/or to provide a location-based message. A method can include receiving a location information of a mobile device and using an access point to transmit location information to one or more other devices that do not include location functionality that are in communication with the mobile device. The method can further include transmitting a message to the mobile device based at least in part on the received access location information. In another embodiment, the method can include receiving a user preference data from the mobile device or one or more other devices and transmitting a communication to the mobile device or one or more other devices that conforms to the user preference data.

摘要翻译： 实施例描述利用位置信息来确定其他设备的位置和/或提供基于位置的消息的方法，系统和设备。 一种方法可以包括接收移动设备的位置信息并且使用接入点将位置信息发送到不包括与移动设备通信的位置功能的一个或多个其他设备。 该方法还可以包括至少部分地基于所接收的访问位置信息向移动设备发送消息。 在另一个实施例中，该方法可以包括从移动设备或一个或多个其他设备接收用户偏好数据，并向移动设备或符合用户偏好数据的一个或多个其他设备发送通信。

公开(公告)号：US20070037603A1

公开(公告)日：2007-02-15

申请号：US11502091

申请日：2006-08-09

申请人： Subrahmanyam Dravida ,  Jay Walton ,  Shravan Surineni

发明人： Subrahmanyam Dravida ,  Jay Walton ,  Shravan Surineni

IPC分类号： H04M1/00

CPC分类号： H04W36/0066 ,  H04W16/32 ,  H04W36/14 ,  H04W76/15 ,  H04W84/12 ,  H04W88/06 ,  H04W92/02

摘要： A wireless communication method, apparatus, and system for simultaneous communication of a wide area network with a wireless local area network. The system having the wide area network configured to transmit control signals, the wireless local area network configured to transmit data signals, and a mobile station configured to receive control signals from the wide area network and data signals from the wireless local area network.

摘要翻译： 一种用于同时通信广域网与无线局域网的无线通信方法，装置和系统。 具有被配置为发送控制信号的广域网的系统，被配置为发送数据信号的无线局域网，以及被配置为从广域网接收控制信号的移动站和来自无线局域网的数据信号。

公开(公告)号：US20070010248A1

公开(公告)日：2007-01-11

申请号：US11240725

申请日：2005-09-30

申请人： Subrahmanyam Dravida ,  Jay Walton ,  Sanjiv Nanda ,  Shravan Surineni

发明人： Subrahmanyam Dravida ,  Jay Walton ,  Sanjiv Nanda ,  Shravan Surineni

IPC分类号： H04Q7/20

CPC分类号： H04W84/18 ,  H04M7/0075 ,  H04W24/08 ,  H04W40/02 ,  H04W40/20 ,  H04W60/00 ,  H04W84/04 ,  H04W84/12 ,  H04W88/08 ,  H04W92/02

摘要： Embodiments describe registration in a wireless communication system. A method includes wirelessly transmitting over a WWAN a first registration message from a mobile device, wirelessly transmitting through the WWAN a second registration message to a WLAN access point and receiving at the mobile device access through the WLAN access point. According to another embodiment is a method for constructing a self-configuring ad-hoc network. The method can include receiving a GPS coordinate from a WWAN channel node at a management system and creating an initial topography based at least in part on the GPS coordinate to achieve a network connectivity with diverse routes between a plurality of nodes.

摘要翻译： 实施例描述了在无线通信系统中的配准。 一种方法包括通过WWAN无线地从移动设备发送第一注册消息，通过WWAN向WLAN接入点无线地发送第二注册消息，并在移动设备处接收通过WLAN接入点的接入。 根据另一个实施例是用于构建自配置自组织网络的方法。 该方法可以包括在管理系统处从WWAN信道节点接收GPS坐标并且至少部分地基于GPS坐标创建初始地形，以实现与多个节点之间的不同路由的网络连接。

公开(公告)号：US20070008925A1

公开(公告)日：2007-01-11

申请号：US11240045

申请日：2005-09-30

申请人： Subrahmanyam Dravida ,  Jay Walton ,  Sanjiv Nanda ,  Shravan Surineni

发明人： Subrahmanyam Dravida ,  Jay Walton ,  Sanjiv Nanda ,  Shravan Surineni

IPC分类号： H04Q7/00

CPC分类号： H04W36/30 ,  H04W36/14 ,  H04W36/36 ,  H04W88/06

摘要： Embodiments describe utilizing time-based information to improve communication in a wireless network. A method can include receiving beacon information from at least one access point and utilizing time-stamp information associated with the beacon information to determine whether to hand off communication with a second access point. According to other embodiments the method can further include detecting beacon quality is below a threshold level and transmitting a poor beacon quality message. Information relating to a plurality of alternate access points can be received in response to the transmitted poor beacon quality message.

摘要翻译： 实施例描述了利用基于时间的信息来改善无线网络中的通信。 一种方法可以包括从至少一个接入点接收信标信息，并利用与信标信息相关联的时间戳信息来确定是否切断与第二接入点的通信。 根据其他实施例，该方法还可以包括检测信标质量低于阈值水平并发送不良信标质量消息。 可以响应于所发送的差信标质量消息而接收与多个替代接入点相关的信息。

公开(公告)号：US20060159003A1

公开(公告)日：2006-07-20

申请号：US11253358

申请日：2005-10-18

申请人： Sanjiv Nanda ,  Shravan Surineni ,  Jay Walton

发明人： Sanjiv Nanda ,  Shravan Surineni ,  Jay Walton

IPC分类号： H04J11/00

CPC分类号： H04W16/10 ,  H04W24/10 ,  H04W72/00

摘要： Embodiments for bandwidth allocation methods, detecting interference with other systems, and/or redeploying in alternate bandwidth are described. Higher bandwidth channels may be deployed at channel boundaries, which are a subset of those for lower bandwidth channels, and may be restricted from overlapping. Interference may be detected on primary, secondary, or a combination of channels, and may be detected in response to energy measurements of the various channels. When interference is detected, a higher bandwidth Basic Service Set (BSS) may be relocated to an alternate channel, or may have its bandwidth reduced to avoid interference. Interference may be detected based on energy measured on the primary or secondary channel, and/or a difference between the two. An FFT may be used in energy measurement in either or both of the primary and secondary channels. Stations may also monitor messages from alternate systems to make channel allocation decisions. Various other aspects are also presented.

摘要翻译： 描述带宽分配方法的实施例，检测与其他系统的干扰和/或以备用带宽重新部署。 较高带宽信道可以部署在信道边界，其是用于较低带宽信道的子集，并且可以被限制为重叠。 可以在主要，次要或信道的组合上检测干扰，并且可以响应于各种信道的能量测量来检测干扰。 当检测到干扰时，较高带宽的基本业务集（BSS）可以被重定位到备用信道，或者可以减少其带宽以避免干扰。 可以基于在主要或次要信道上测量的能量和/或两者之间的差异来检测干扰。 可以在主要和次要信道中的一个或两个中的能量测量中使用FFT。 站点还可以监视来自备用系统的消息以进行信道分配决定。 还提出了各种其他方面。

公开(公告)号：US20060104340A1

公开(公告)日：2006-05-18

申请号：US11175787

申请日：2005-07-05

申请人： Jay Walton ,  Shravan Surineni ,  Arnaud Maylan ,  Sanjiv Nanda

发明人： Jay Walton ,  Shravan Surineni ,  Arnaud Maylan ,  Sanjiv Nanda

IPC分类号： H04B17/00

CPC分类号： H04L1/0015 ,  H04B17/309 ,  H04L1/0002 ,  H04L1/1607 ,  Y02D50/10

摘要： Techniques for performing open-loop rate control in a TDD communication system are described. The channel quality of a first link is estimated based on a transmission received via the first link. The channel quality of a second link is estimated based on the estimated channel quality of the first link and an asymmetric parameter. At least one rate for a data transmission via the second link is selected based on the estimated channel quality of the second link. The estimated channel quality for each link may be given by a set of SNR estimates for a set of transmission channels on that link. The asymmetric parameter may be determined based on (1) the capabilities (e.g., transmit power, receiver noise figure, and number of antennas) of the transmitting and receiving stations or (2) received SNRs for the first and second links.

公开(公告)号：US20080056305A1

公开(公告)日：2008-03-06

申请号：US11751471

申请日：2007-05-21

申请人： Irina Medvedev ,  Jay Walton ,  Mark Wallace ,  Steven Howard

发明人： Irina Medvedev ,  Jay Walton ,  Mark Wallace ,  Steven Howard

IPC分类号： H04B3/10

CPC分类号： H04L27/0014 ,  H04L1/0045 ,  H04L5/0023 ,  H04L5/0048 ,  H04L25/061 ,  H04L27/261 ,  H04L27/2657 ,  H04L27/2662 ,  H04L2027/0053 ,  H04L2027/0067 ,  H04L2027/0087

摘要： Techniques for performing phase correction for wireless communication are described. Received pilot symbols and received data symbols may be obtained from an orthogonal frequency division multiplexing (OFDM) and/or multiple-input multiple-output (MIMO) transmission. First phase information is obtained based upon the received pilot symbols. Second phase information is obtained based upon the received data symbols. The phase of the received data symbols is corrected based upon the first and second phase information (directly and/or indirectly). For example, the phase of the received data symbols may be corrected based upon the first phase information, detection may be performed on the phase corrected data symbols to obtain estimated data symbols, the second phase information may be obtained based upon the estimated data symbols, and the phase of the estimated data symbols may be corrected based upon the second phase information. The phase correction may also be performed in other manners.

摘要翻译： 描述用于执行无线通信的相位校正的技术。 可以从正交频分复用（OFDM）和/或多输入多输出（MIMO）传输中获得接收到的导频符号和接收的数据符号。 基于接收到的导频符号获得第一相位信息。 基于接收到的数据符号获得第二相位信息。 基于第一和第二相位信息（直接和/或间接地）校正接收到的数据符号的相位。 例如，可以基于第一相位信息来校正接收到的数据符号的相位，可以对相位校正数据符号执行检测以获得估计的数据符号，可以基于估计的数据符号获得第二相位信息， 并且可以基于第二相位信息来校正估计数据符号的相位。 相位校正也可以以其他方式进行。

公开(公告)号：US20080013638A1

公开(公告)日：2008-01-17

申请号：US11766362

申请日：2007-06-21

申请人： Jay Walton ,  Mark Wallace ,  Steven Howard

发明人： Jay Walton ,  Mark Wallace ,  Steven Howard

IPC分类号： H04L27/28

CPC分类号： H04W16/00 ,  H04B7/0417 ,  H04B7/0452 ,  H04B7/061 ,  H04L1/0003 ,  H04L1/0009 ,  H04L1/0026 ,  H04L1/06 ,  H04L25/0204 ,  H04L2025/03426 ,  H04W16/28 ,  H04W84/14

摘要： Techniques to schedule downlink data transmission to a number of terminals in a wireless communication system. In one method, one or more sets of terminals are formed for possible data transmission, with each set including a unique combination of one or more terminals and corresponding to a hypothesis to be evaluated. One or more sub-hypotheses may further be formed for each hypothesis, with each sub-hypothesis corresponding to specific assignments of a number of transmit antennas to the one or more terminals in the hypothesis. The performance of each sub-hypothesis is then evaluated, and one of the evaluated sub-hypotheses is selected based on their performance. The terminal(s) in the selected sub-hypothesis are then scheduled for data transmission, and data is thereafter coded, modulated, and transmitted to each scheduled terminal from one or more transmit antennas assigned to the terminal.

摘要翻译： 将无线通信系统中的下行链路数据传输调度到多个终端的技术。 在一种方法中，形成一组或多组终端用于可能的数据传输，每组包括一个或多个终端的唯一组合，并对应于待评估的假设。 可以针对每个假设进一步形成一个或多个子假设，其中每个子假设对应于假设中的一个或多个终端的多个发射天线的特定分配。 然后评估每个子假设的性能，并根据其性能选择评估的子假设之一。 然后将所选子假设中的终端调度用于数据传输，然后将数据从分配给终端的一个或多个发射天线编码，调制并发送到每个调度终端。

公开(公告)号：US20070162827A1

公开(公告)日：2007-07-12

申请号：US11349367

申请日：2006-02-06

申请人： Jay Walton ,  Mark Wallace ,  Steven Howard

发明人： Jay Walton ,  Mark Wallace ,  Steven Howard

IPC分类号： H03M13/00

CPC分类号： H04L1/06 ,  H04L1/0631 ,  H04L25/03242 ,  H04L25/03292

摘要： Techniques for performing sphere detection to recover data symbols sent in a MIMO transmission are described. In an aspect, sphere detection is performed for data symbols generated with at least two modulation schemes. In another aspect, sphere detection is performed for the data symbols in an order determined based on at least one attribute of the data symbols, which may be error probabilities, modulation schemes, and/or link margins for the data symbols. In yet another aspect, rates for multiple data streams detected with sphere detection are selected based on channel state information. Signal qualities of the data streams may be estimated based on the channel state information, e.g., (1) an upper triangular matrix used for sphere detection and/or (2) an assumption that interference from data streams already detected is canceled. The rates for the data streams may be selected based on the estimated signal qualities.

摘要翻译： 描述了用于执行球体检测以恢复在MIMO传输中发送的数据符号的技术。 在一个方面，对用至少两个调制方案产生的数据符号执行球体检测。 在另一方面，以数据符号的至少一个属性确定的顺序对数据符号执行球体检测，数据符号可以是数据符号的错误概率，调制方案和/或链接余量。 在另一方面，基于信道状态信息选择用球检测检测的多个数据流的速率。 可以基于信道状态信息来估计数据流的信号质量，例如（1）用于球体检测的上三角矩阵和/或（2）已经检测到的来自数据流的干扰被消除的假设。 可以基于估计的信号质量来选择数据流的速率。

公开(公告)号：US20060106902A1

公开(公告)日：2006-05-18

申请号：US11096839

申请日：2005-03-31

申请人： Steven Howard ,  John Ketchum ,  Mark Wallace ,  Jay Walton

发明人： Steven Howard ,  John Ketchum ,  Mark Wallace ,  Jay Walton

IPC分类号： G06F15/00

CPC分类号： G06F17/16 ,  H04B7/0413 ,  H04B7/0617 ,  H04L25/0208 ,  H04L25/0248 ,  H04L27/2647

摘要： For eigenvalue decomposition, a first set of at least one variable is derived based on a first matrix being decomposed and using Coordinate Rotational Digital Computer (CORDIC) computation. A second set of at least one variable is derived based on the first matrix and using a look-up table. A second matrix of eigenvectors of the first matrix is then derived based on the first and second variable sets. To derive the first variable set, CORDIC computation is performed on an element of the first matrix to determine the magnitude and phase of this element, and CORDIC computation is performed on the phase to determine the sine and cosine of this element. To derive the second variable set, intermediate quantities are derived based on the first matrix and used to access the look-up table.

摘要翻译： 对于特征值分解，基于正在分解的第一矩阵并使用坐标旋转数字计算机（CORDIC）计算来导出至少一个变量的第一组。 基于第一矩阵并使用查找表导出第二组至少一个变量。 然后基于第一和第二变量集导出第一矩阵的特征向量的第二矩阵。 为了导出第一变量集，对第一矩阵的元素执行CORDIC计算，以确定该元素的幅度和相位，并且在相位上执行CORDIC计算以确定该元素的正弦和余弦。 为了导出第二变量集，基于第一矩阵导出中间量并用于访问查找表。