公开(公告)号：US09602276B2

公开(公告)日：2017-03-21

申请号：US13157048

申请日：2011-06-09

申请人： David M. Jacobson ,  Lu Xiao ,  David J. Julian ,  Zhanfeng Jia ,  Brian M. Buesker ,  Vito R. Bica ,  Edward H. Teague

发明人： David M. Jacobson ,  Lu Xiao ,  David J. Julian ,  Zhanfeng Jia ,  Brian M. Buesker ,  Vito R. Bica ,  Edward H. Teague

IPC分类号： H04L9/08 ,  H04L9/32 ,  H04W12/04

CPC分类号： H04L9/0833 ,  H04L9/0844 ,  H04L9/3213 ,  H04L9/3297 ,  H04L2209/76 ,  H04L2209/80 ,  H04W12/04

摘要： One feature provides a method for a client node to establish a session key with a group node by obtaining an epoch identity value associated with a current epoch, wherein obtaining the epoch identity value includes one of computing the epoch identity value based on a node real time or negotiating the epoch identity value with the group node, computing a restricted key using a shared secret key, the epoch identity value, and a group node identity associated with the group node, and executing a session key establishment protocol with the group node to derive the session key using the restricted key as a master key in the session key establishment protocol. The session key may be established between the group node and the client node even though communications between the group node and the central node is only intermittently available during the current epoch.

公开(公告)号：US20110305333A1

公开(公告)日：2011-12-15

申请号：US13157048

申请日：2011-06-09

申请人： David M. JACOBSON ,  Lu Xiao ,  David J. Julian ,  Zhanfeng Jia ,  Brian M. Buesker ,  Vito R. Bica ,  Edward H. Teague

发明人： David M. JACOBSON ,  Lu Xiao ,  David J. Julian ,  Zhanfeng Jia ,  Brian M. Buesker ,  Vito R. Bica ,  Edward H. Teague

IPC分类号： H04L9/14

CPC分类号： H04L9/0833 ,  H04L9/0844 ,  H04L9/3213 ,  H04L9/3297 ,  H04L2209/76 ,  H04L2209/80 ,  H04W12/04

摘要： One feature provides a method for a client node to establish a session key with a group node by obtaining an epoch identity value associated with a current epoch, wherein obtaining the epoch identity value includes one of computing the epoch identity value based on a node real time or negotiating the epoch identity value with the group node, computing a restricted key using a shared secret key, the epoch identity value, and a group node identity associated with the group node, and executing a session key establishment protocol with the group node to derive the session key using the restricted key as a master key in the session key establishment protocol. The session key may be established between the group node and the client node even though communications between the group node and the central node is only intermittently available during the current epoch.

摘要翻译： 一个特征提供了一种用于客户端节点通过获得与当前时期相关联的时元标识值来建立与组节点的会话密钥的方法，其中获取时代标识值包括基于节点实时计算时代标识值之一 或者与组节点协商时代标识值，使用共享秘密密钥计算受限密钥，使用时代标识值和与该组节点相关联的组节点标识，并且与组节点执行会话密钥建立协议以导出 会话密钥使用受限密钥作为会话密钥建立协议中的主密钥。 即使组节点和中心节点之间的通信在当前时期仅间歇地可用，也可以在组节点和客户机节点之间建立会话密钥。

公开(公告)号：US07966011B2

公开(公告)日：2011-06-21

申请号：US12054175

申请日：2008-03-24

申请人： Hemanth Sampath ,  Edward H. Teague ,  Dhananjay Ashok Gore

发明人： Hemanth Sampath ,  Edward H. Teague ,  Dhananjay Ashok Gore

IPC分类号： H04W24/00

CPC分类号： H04W52/146 ,  H04W52/10 ,  H04W52/241 ,  H04W52/245 ,  H04W52/246 ,  H04W52/40

摘要： At a mobile device, a total received power represents signals received from all access points. In order to calculate an appropriate transmit power for communication with a single access point, a mobile device determines a per sector received power level. The mobile device can ascertain a time-domain channel response from each access point pilot signal, ascertain a received digital power lever per sector from each access point pilot signal and, based in part on the digital power level, calculate a received power level from each access point. A per sector received power level can be utilized to conserve battery power and/or to reduce interference in a wireless communications network.

摘要翻译： 在移动设备处，总接收功率表示从所有接入点接收的信号。 为了计算用于与单个接入点通信的适当发射功率，移动设备确定每扇区接收的功率电平。 移动设备可以确定来自每个接入点导频信号的时域信道响应，从每个接入点导频信号确定每扇区接收到的数字功率控制器，并且部分地基于数字功率电平，从每个接入点导频信号计算每个接入点导频信号的接收功率电平 切入点。 可以利用每扇区接收的功率电平来节省电池功率和/或减少无线通信网络中的干扰。

公开(公告)号：US20120151234A1

公开(公告)日：2012-06-14

申请号：US12969780

申请日：2010-12-16

申请人： Edward H. Teague ,  David J. Walker

发明人： Edward H. Teague ,  David J. Walker

IPC分类号： G06F1/32

CPC分类号： H04W52/0229 ,  Y02D70/26

摘要： A method for implementing a sleep control that includes the steps of receiving a message from a sending block via a messaging bus, wherein the message is destined for a receiving block; determining whether the receiving block is awake; and delaying further transmission of the message until the receiving block is awake. An apparatus for performing the method is also disclosed.

摘要翻译： 一种用于实现睡眠控制的方法，包括以下步骤：经由消息总线从发送块接收消息，其中所述消息指定给接收块; 确定接收块是否清醒; 并延迟消息的进一步传输，直到接收块清醒。 还公开了一种用于执行该方法的装置。

公开(公告)号：US08526963B2

公开(公告)日：2013-09-03

申请号：US10871084

申请日：2004-06-18

申请人： Tingfang Ji ,  Avneesh Agrawal ,  Edward H. Teague

发明人： Tingfang Ji ,  Avneesh Agrawal ,  Edward H. Teague

IPC分类号： H04Q7/20 ,  H04B15/00 ,  H04L5/26

CPC分类号： H04W16/12 ,  H04W16/02 ,  H04W72/0453 ,  H04W72/082

摘要： For restrictive reuse, each cell (or each sector) is assigned (1) a set of usable subbands that may be allocated to users in the cell and (2) a set of forbidden subbands that is not used. The usable and forbidden sets for each cell are orthogonal to one other. The usable set for each cell also overlaps the forbidden set for each neighboring cell. A user u in a cell x may be allocated subbands in the usable set for that cell. If user u observes/causes high level of interference from/to a neighboring cell y, then user u may be allocated subbands from a “restricted” set containing subbands included in both the usable set for cell x and the forbidden set for cell y. User u would then observe/cause no interference from/to cell y. The subband restriction may be extended to avoid interference from multiple neighboring cells.

公开(公告)号：US20080253319A1

公开(公告)日：2008-10-16

申请号：US12141557

申请日：2008-06-18

申请人： Tingfang Ji ,  Avneesh Agrawal ,  Edward H. Teague

发明人： Tingfang Ji ,  Avneesh Agrawal ,  Edward H. Teague

IPC分类号： H04Q7/00

CPC分类号： H04W16/12 ,  H04W16/02 ,  H04W72/0453 ,  H04W72/082

摘要： For restrictive reuse, each cell (or each sector) is assigned (1) a set of usable subbands that may be allocated to users in the cell and (2) a set of forbidden subbands that is not used. The usable and forbidden sets for each cell are orthogonal to one other. The usable set for each cell also overlaps the forbidden set for each neighboring cell. A user u in a cell x may be allocated subbands in the usable set for that cell. If user u observes/causes high level of interference from/to a neighboring cell y, then user u may be allocated subbands from a “restricted” set containing subbands included in both the usable set for cell x and the forbidden set for cell y. User u would then observe/cause no interference from/to cell y. The subband restriction may be extended to avoid interference from multiple neighboring cells.

摘要翻译： 对于限制性重用，分配每个小区（或每个扇区）（1）可以分配给小区中的用户的一组可用子带，以及（2）未使用的一组禁止子带。 每个单元的可用和禁止的集合彼此正交。 每个单元的可用集合也与每个相邻单元的禁止集重叠。 小区x中的用户u可以被分配给该小区的可用集合中的子带。 如果用户u观察到/来自相邻小区y的高水平的干扰，则可以从包含小区x的可用集合和小区y的禁止集合的包含子带的“限制”集合中分配用户u的子带。 用户u然后将观察/不造成来自/到小区y的干扰。 可以扩展子带限制以避免来自多个相邻小区的干扰。

公开(公告)号：US08644292B2

公开(公告)日：2014-02-04

申请号：US11260932

申请日：2005-10-27

申请人： Alexei Gorokhov ,  Edward H. Teague ,  Aamod Khandekar

发明人： Alexei Gorokhov ,  Edward H. Teague ,  Aamod Khandekar

IPC分类号： H04J3/24

CPC分类号： H04W72/1231

摘要： Embodiments describe a varied transmission time interval in wireless communication system. According to some embodiments is a method for assigning a transmission time interval. The method can include measuring a channel condition and/or a data rate of packet communicated by at least one wireless device. Based in part on the data rate and/or channel condition information, a determination can be made whether to schedule a long transmission time interval or a short transmission time interval to the packet. A long transmission time interval can be scheduled if the channel condition is poor and/or there is a low data rate. A short transmission time interval can be scheduled if the channel condition is good and/or the data rate is high or fast. The method can be repeated for multiple wireless devices. Also included is an alternative interlacing structure that supports both long transmission time intervals and short transmission time intervals.

摘要翻译： 实施例描述了无线通信系统中的变化的传输时间间隔。 根据一些实施例是用于分配传输时间间隔的方法。 该方法可以包括测量由至少一个无线设备传送的分组的信道条件和/或数据速率。 部分地基于数据速率和/或信道条件信息，可以确定是否为分组规划长的传输时间间隔或短的传输时间间隔。 如果信道条件差和/或数据速率低，则可以调度长传输时间间隔。 如果信道条件良好和/或数据速率高或快，则可以调度短传输时间间隔。 可以为多个无线设备重复该方法。 还包括支持长传输时间间隔和短传输时间间隔的替代交错结构。

公开(公告)号：US08391413B2

公开(公告)日：2013-03-05

申请号：US10741524

申请日：2003-12-19

申请人： Ashok Mantravadi ,  Aamod Khandekar ,  Edward H. Teague ,  Tamer Kadous

发明人： Ashok Mantravadi ,  Aamod Khandekar ,  Edward H. Teague ,  Tamer Kadous

IPC分类号： H03K9/00

CPC分类号： H04L25/022 ,  H04L25/0218 ,  H04L25/0232

摘要： For channel estimation in a spectrally shaped wireless communication system, an initial frequency response estimate is obtained for a first set of P uniformly spaced subbands (1) based on pilot symbols received on a second set of subbands used for pilot transmission and (2) using extrapolation and/or interpolation, where P is a power of two. A channel impulse response estimate is obtained by performing a P-point IFFT on the initial frequency response estimate. A final frequency response estimate for N total subbands is derived by (1) setting low quality taps for the channel impulse response estimate to zero, (2) zero-padding the channel impulse response estimate to length N, and (3) performing an N-point FFT on the zero-padded channel impulse response estimate. The channel frequency/impulse response estimate may be filtered to obtain a higher quality channel estimate.

摘要翻译： 对于频谱形状的无线通信系统中的信道估计，基于在用于导频传输的第二组子带上接收的导频符号，获得对于第一组P均匀间隔子带（1）的初始频率响应估计，以及（2）使用 外插和/或插值，其中P是2的幂。 通过对初始频率响应估计执行P点IFFT来获得信道脉冲响应估计。 通过（1）将信道脉冲响应估计的低质量抽头设置为零，（2）将信道脉冲响应估计零填充到长度N，得到N个总子带的最终频率响应估计，以及（3）执行N 点零点填充信道脉冲响应估计。 可以对信道频率/脉冲响应估计进行滤波以获得更高质量的信道估计。

公开(公告)号：US20090310526A1

公开(公告)日：2009-12-17

申请号：US12482215

申请日：2009-06-10

申请人： Dhananjay A. Gore ,  Edward H. Teague

发明人： Dhananjay A. Gore ,  Edward H. Teague

IPC分类号： H04H20/71

CPC分类号： H04B7/022 ,  H04W56/0045

摘要： Systems and methods for communicating with multiple receivers simultaneously are disclosed. In one embodiment, the method comprises applying a first adjustment to a first signal based on a first propagation path delay between a transmitter and a first receiver, combining the adjusted first signal and a second signal, and transmitting a composite signal based on the combined signal substantially concurrently to the first receiver and a second receiver.

摘要翻译： 公开了与多个接收器同时通信的系统和方法。 在一个实施例中，该方法包括基于发射机和第一接收机之间的第一传播路径延迟对第一信号施加第一调整，组合经调整的第一信号和第二信号，以及基于组合信号发送复合信号 基本上同时发送到第一接收器和第二接收器。

公开(公告)号：US20090213750A1

公开(公告)日：2009-08-27

申请号：US12389089

申请日：2009-02-19

申请人： Alexei Gorokhov ,  Edward H. Teague ,  Aamod Khandekar

发明人： Alexei Gorokhov ,  Edward H. Teague ,  Aamod Khandekar

IPC分类号： H04L12/26 ,  H04J3/00

CPC分类号： H04W72/1231

摘要： Embodiments describe a varied transmission time interval in wireless communication system. According to some embodiments is a method for assigning a transmission time interval. The method can include measuring a channel condition and/or a data rate of packet communicated by at least one wireless device. Based in part on the data rate and/or channel condition information, a determination can be made whether to schedule a long transmission time interval or a short transmission time interval to the packet. A long transmission time interval can be scheduled if the channel condition is poor and/or there is a low data rate. A short transmission time interval can be scheduled if the channel condition is good and/or the data rate is high or fast. The method can be repeated for multiple wireless devices. Also included is an alternative interlacing structure that supports both long transmission time intervals and short transmission time intervals.

摘要翻译： 实施例描述了无线通信系统中的变化的传输时间间隔。 根据一些实施例是用于分配传输时间间隔的方法。 该方法可以包括测量由至少一个无线设备传送的分组的信道条件和/或数据速率。 部分地基于数据速率和/或信道条件信息，可以确定是否为分组规划长的传输时间间隔或短的传输时间间隔。 如果信道条件差和/或数据速率低，则可以调度长传输时间间隔。 如果信道条件良好和/或数据速率高或快，则可以调度短传输时间间隔。 可以为多个无线设备重复该方法。 还包括支持长传输时间间隔和短传输时间间隔的替代交错结构。