公开(公告)号：US08489107B2

公开(公告)日：2013-07-16

申请号：US13030183

申请日：2011-02-18

申请人： J. Rodney Walton ,  Mark S. Wallace ,  Steven J. Howard

发明人： J. Rodney Walton ,  Mark S. Wallace ,  Steven J. Howard

IPC分类号： H04Q7/20

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：US08478820B2

公开(公告)日：2013-07-02

申请号：US12547672

申请日：2009-08-26

申请人： Oliver Michaelis ,  J. Rodney Walton ,  John W. Ketchum

发明人： Oliver Michaelis ,  J. Rodney Walton ,  John W. Ketchum

IPC分类号： G06F15/16

CPC分类号： H04L29/06326 ,  H04L67/04 ,  H04L67/16 ,  H04L67/18 ,  H04W4/00 ,  H04W48/08 ,  H04W48/16 ,  H04W76/20 ,  H04W92/18

摘要： Certain embodiments of the present disclosure relate to a method and an apparatus for managing and optimizing service discovery in a peer-to-peer (P2P) wireless network. Nodes of the P2P network advertise their capabilities to their peers in the form of services. Efficient propagation and management of node's services to other nodes is proposed in the present disclosure.

摘要翻译： 本公开的某些实施例涉及用于在对等（P2P）无线网络中管理和优化服务发现的方法和装置。 P2P网络的节点以服务的形式向他们的对等体发布他们的能力。 在本公开中提出了节点对其他节点的服务的有效传播和管理。

公开(公告)号：US08478776B2

公开(公告)日：2013-07-02

申请号：US12610255

申请日：2009-10-30

申请人： J. Rodney Walton ,  John W. Ketchum

发明人： J. Rodney Walton ,  John W. Ketchum

IPC分类号： G06F17/00

CPC分类号： H04W48/16 ,  H04L67/104 ,  H04L67/1068 ,  H04L67/16 ,  H04W8/005 ,  H04W84/18

摘要： A collection of nodes in a peer-to-peer (P2P) network can have a larger aggregate coverage footprint than any given single node. This inherent multi-site property of P2P wireless networks can provide each node with benefits of multi-user diversity. This can improve the effective coverage of nodes within a P2P wireless network and improve discovery of devices in the P2P network.

摘要翻译： 点对点（P2P）网络中的节点集合可以具有比任何给定的单个节点更大的聚合覆盖范围。 P2P无线网络固有的多站点属性可以为每个节点提供多用户多样性的优势。 这可以提高P2P无线网络内节点的有效覆盖，改善P2P网络中设备的发现。

公开(公告)号：US08462653B2

公开(公告)日：2013-06-11

申请号：US12778911

申请日：2010-05-12

申请人： Irina Medvedev ,  John W. Ketchum ,  J. Rodney Walton

发明人： Irina Medvedev ,  John W. Ketchum ,  J. Rodney Walton

IPC分类号： H04L12/26

CPC分类号： H04W24/02 ,  H04L1/0002 ,  H04L1/0016 ,  H04L1/0019 ,  H04L1/0025 ,  H04L1/06 ,  H04L1/20

摘要： Techniques to select a suitable transmission mode for a data transmission in a multi channel communication system with multiple spatial channels having varying SNRs are presented in this disclosure. For certain embodiments, a closed-loop technique may be applied, in which back-off factors used to calculate an effective SNR value fed back to a transmitter are adjusted. An open-loop rate control scheme is also presented in which a transmitter may select a data rate and number of streams based on whether transmitted packets are received in error at a receiver.

摘要翻译： 在本公开中提出了在具有变化的SNR的多个空间信道的多通道通信系统中选择用于数据传输的合适传输模式的技术。 对于某些实施例，可以应用闭环技术，其中调整用于计算反馈到发射机的有效SNR值的回退因子。 还提出了一种开环速率控制方案，其中发射机可以基于在接收机处是否发送的分组被错误地接收来选择数据速率和数量的数据流。

公开(公告)号：US08428175B2

公开(公告)日：2013-04-23

申请号：US11684566

申请日：2007-03-09

申请人： Rabih Chrabieh

发明人： Rabih Chrabieh

IPC分类号： H04L27/00

CPC分类号： H04B17/0085 ,  H04B17/20

摘要： A system and method are provided for transmitting a rotating training sequence. A rotating training signal is generated in quadrature modulation transmitter. The rotating training signal includes training information sent via an in-phase (I) modulation path, as well as training information sent via a quadrature (Q) modulation path. The rotating training signal may be generated by initially sending training information via the I modulation path, and subsequently sending training information via the Q modulation path. The training information sent via the I modulation path may include a first symbol having a reference phase (e.g., 0 degrees or 180 degrees). Then, the training information sent via the Q modulation path would include a second symbol having a phase that is ±90 from the reference phase.

摘要翻译： 提供了用于传送旋转训练序列的系统和方法。 在正交调制发射机中产生旋转训练信号。 旋转训练信号包括通过同相（I）调制路径发送的训练信息，以及通过正交（Q）调制路径发送的训练信息。 可以通过经由I调制路径初始发送训练信息，并且随后经由Q调制路径发送训练信息来生成旋转训练信号。 通过I调制路径发送的训练信息可以包括具有参考相位（例如，0度或180度）的第一符号。 然后，通过Q调制路径发送的训练信息将包括具有与参考相位相差±90°的相位的第二符号。

公开(公告)号：US08364148B2

公开(公告)日：2013-01-29

申请号：US11240725

申请日：2005-09-30

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

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

IPC分类号： H04W4/00

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.

公开(公告)号：US08358714B2

公开(公告)日：2013-01-22

申请号：US11190106

申请日：2005-07-25

申请人： Jay Rodney Walton ,  Irina Medvedev

发明人： Jay Rodney Walton ,  Irina Medvedev

IPC分类号： H04L1/02

CPC分类号： H04L1/0009 ,  H04L1/0003 ,  H04L1/06 ,  Y02D50/10

摘要： Techniques for transmitting multiple data streams to a single receiver using a single code rate and different modulation schemes are described. Channel estimates are determined for the multiple data streams and used to select a single code rate and multiple modulation schemes for the multiple data streams. The system may support a set of code rates, and each code rate may be associated with a respective set of modulation schemes that may be used with that code rate. The single code rate for all data streams is selected from among the set of supported code rates, and the modulation scheme for each data stream is selected from among the set of modulation schemes associated with the single code rate. The multiple data streams are encoded in accordance with the single code rate. Each data stream is further modulated in accordance with the modulation scheme selected for that stream.

摘要翻译： 描述了使用单个码率和不同调制方案将多个数据流发送到单个接收机的技术。 为多个数据流确定信道估计，并用于为多个数据流选择单个码率和多个调制方案。 该系统可以支持一组码率，并且每个码率可以与可以与该码率一起使用的相应的一组调制方案​​相关联。 从所支持的码率集合中选择所有数据流的单码率，并且从与单个码率相关联的调制方案组中选择每个数据流的调制方案。 多个数据流根据单码率进行编码。 根据为该流选择的调制方案进一步调制每个数据流。

公开(公告)号：US08311543B2

公开(公告)日：2012-11-13

申请号：US11240045

申请日：2005-09-30

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

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

IPC分类号： H04W36/00 ,  H04W4/00

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：US08254244B2

公开(公告)日：2012-08-28

申请号：US12258782

申请日：2008-10-27

申请人： Juan Montojo ,  Durga Prasad Malladi

发明人： Juan Montojo ,  Durga Prasad Malladi

IPC分类号： H04J11/00

CPC分类号： H04L5/0053 ,  H04L1/0026 ,  H04L1/003 ,  H04L1/1671 ,  H04L1/1858 ,  H04L5/0007 ,  H04L5/0064 ,  H04L5/0091

摘要： Systems and methodologies are described that facilitate arrangement and transmission of control information in a wireless communication system. As described herein, a scheduled transmission of acknowledgement (ACK) signaling and channel quality information (CQI) signaling in a common subframe can be adapted for network implementations with limited link budget wherein ACK signaling is configured for repetition over multiple subframes to ensure a desired error rate level for the ACK signaling. To these ends, various aspects described herein facilitate modification of a coding rate applied to ACK signaling to be transmitted with data based on a repetition factor of the ACK signaling. Additionally and/or alternatively, various aspects described herein facilitate dropping of CQI signaling and transmission of only ACK signaling on subframes where CQI and ACK signaling are to be transmitted substantially simultaneously and ACK transmission is configured for repetition over multiple subframes.

摘要翻译： 描述了有助于无线通信系统中的控制信息的布置和传输的系统和方法。 如本文所描述的，在公共子帧中的确认（ACK）信令和信道质量信息（CQI）信令的调度传输可以适用于具有有限链路预算的网络实现，其中ACK信令被配置为在多个子帧上重复以确保期望的误差 ACK信令的速率级别。 为此，本文描述的各个方面有助于修改应用于基于ACK信令的重复因素的数据传送的ACK信令的编码率。 附加地和/或替代地，本文描述的各个方面有助于丢弃CQI信令，并且仅在基本上同时发送CQI和ACK信令的子帧上发送ACK信令，并且将ACK传输配置为在多个子帧上进行重复。

公开(公告)号：US08194776B2

公开(公告)日：2012-06-05

申请号：US12704111

申请日：2010-02-11

申请人： Ahmad Jalali ,  Jay R. Walton ,  Mark Wallace

发明人： Ahmad Jalali ,  Jay R. Walton ,  Mark Wallace

IPC分类号： H04B7/02

CPC分类号： H04L5/023

摘要： Transmitter and receiver units for use in an OFDM communications system and configurable to support multiple types of services. The transmitter unit includes one or more encoders, a symbol mapping element, and a modulator. Each encoder receives and codes a respective channel data stream to generate a corresponding coded data stream. The symbol mapping element receives and maps data from the coded data streams to generate modulation symbol vectors, with each modulation symbol vector including a set of data values used to modulate a set of tones to generate an OFDM symbol. The modulator modulates the modulation symbol vectors to provide a modulated signal suitable for transmission. The data from each coded data stream is mapped to a respective set of one or more “circuits”. Each circuit can be defined to include a number of tones from a number of OFDM symbols, a number of tones from a single OFDM symbol, all tones from one or more OFDM symbols, or some other combination of tones. The circuits can have equal size or different sizes. Different circuits can be used for full rate data (e.g., active speech) and low rate data (e.g., silence periods).

摘要翻译： 发射机和接收机单元，用于OFDM通信系统并可配置为支持多种类型的业务。 发射机单元包括一个或多个编码器，符号映射元件和调制器。 每个编码器接收和编码相应的信道数据流以生成对应的编码数据流。 符号映射元件接收并映射来自编码数据流的数据以产生调制符号向量，其中每个调制符号向量包括用于调制一组音调以生成OFDM符号的一组数据值。 调制器调制调制符号向量以提供适于传输的调制信号。 来自每个编码数据流的数据被映射到一个或多个“电路”的相应集合。 每个电路可以被定义为包括来自多个OFDM符号的多个音调，来自单个OFDM符号的多个音调，来自一个或多个OFDM符号的所有音调，或一些其它音调组合。 电路可以具有相同的尺寸或不同的尺寸。 不同的电路可以用于全速率数据（例如，活动语音）和低速率数据（例如，静默时段）。