公开(公告)号：US07746827B2

公开(公告)日：2010-06-29

申请号：US11731528

申请日：2007-03-30

申请人： Feng Xue ,  Jun Shi ,  Sumeet Sandhu

发明人： Feng Xue ,  Jun Shi ,  Sumeet Sandhu

IPC分类号： H04W4/00

CPC分类号： H04W72/085 ,  H04L1/0002 ,  H04L1/0009

摘要： Methods and arrangements for wireless communications are contemplated. Embodiments include transformations, code, state machines or other logic to determine the signal to noise ratios (SNRs) of multiple stations associated with an access point in a wireless network. The embodiments may also include selecting whether one of the stations communicates with the access point by an orthogonal frequency division multiplexing (OFDM) transmission method or a multiple-access joint coding/decoding transmission method, the selecting based upon the SNRs and communicating the selected transmission method to the station of the multiple stations. Some embodiments may include determining an SNR threshold level, selecting the MAC transmission method if the SNR of at least one of the multiple stations is below the SNR threshold level, and selecting the OFDM transmission method if the SNRs of all of the multiple stations are above the SNR threshold level. Other embodiments are described and claimed.

摘要翻译： 考虑了无线通信的方法和布置。 实施例包括转换，代码，状态机或其他逻辑，以确定与无线网络中的接入点相关联的多个站的信噪比（SNR）。 实施例还可以包括：通过正交频分复用（OFDM）传输方法或多址联合编码/解码传输方法来选择站中的一个是否与接入点通信，基于SNR进行选择并传送所选择的传输 方法到多站的站。 一些实施例可以包括确定SNR阈值水平，如果多个站中的至少一个的SNR低于SNR阈值水平，则选择MAC传输方法，以及如果所有多个站的SNR在上面，则选择OFDM传输方法 SNR阈值水平。 描述和要求保护其他实施例。

公开(公告)号：US20080239977A1

公开(公告)日：2008-10-02

申请号：US11731528

申请日：2007-03-30

申请人： Feng Xue ,  Jun Shi ,  Sumeet Sandhu

发明人： Feng Xue ,  Jun Shi ,  Sumeet Sandhu

IPC分类号： G06F11/00

CPC分类号： H04W72/085 ,  H04L1/0002 ,  H04L1/0009

摘要： Methods and arrangements for wireless communications are contemplated. Embodiments include transformations, code, state machines or other logic to determine the signal to noise ratios (SNRs) of multiple stations associated with an access point in a wireless network. The embodiments may also include selecting whether one of the stations communicates with the access point by an orthogonal frequency division multiplexing (OFDM) transmission method or a multiple-access joint coding/decoding transmission method, the selecting based upon the SNRs and communicating the selected transmission method to the station of the multiple stations. Some embodiments may include determining an SNR threshold level, selecting the MAC transmission method if the SNR of at least one of the multiple stations is below the SNR threshold level, and selecting the OFDM transmission method if the SNRs of all of the multiple stations are above the SNR threshold level. Other embodiments are described and claimed.

摘要翻译： 考虑了无线通信的方法和布置。 实施例包括转换，代码，状态机或其他逻辑，以确定与无线网络中的接入点相关联的多个站的信噪比（SNR）。 实施例还可以包括：通过正交频分复用（OFDM）传输方法或多址联合编码/解码传输方法来选择站中的一个是否与接入点通信，基于SNR进行选择并传送所选择的传输 方法到多站的站。 一些实施例可以包括确定SNR阈值水平，如果多个站中的至少一个的SNR低于SNR阈值水平，则选择MAC传输方法，以及如果所有多个站的SNR在上方，则选择OFDM传输方法 SNR阈值水平。 描述和要求保护其他实施例。

公开(公告)号：US08077802B2

公开(公告)日：2011-12-13

申请号：US12049766

申请日：2008-03-17

申请人： Sumeet Sandhu ,  Feng Xue

发明人： Sumeet Sandhu ,  Feng Xue

IPC分类号： H04L27/04 ,  H04L23/00 ,  H04B1/00 ,  H04W72/04 ,  H04J3/16

CPC分类号： H04L5/0037 ,  H04L5/0023 ,  H04L5/006 ,  H04W72/0453 ,  H04W72/082 ,  Y02D70/1224 ,  Y02D70/124 ,  Y02D70/1262 ,  Y02D70/142 ,  Y02D70/144 ,  Y02D70/146 ,  Y02D70/162 ,  Y02D70/164 ,  Y02D70/166

摘要： Device, system, and method of resource allocation in a wireless network. Embodiments include optimal space-frequency architectures for very high peak rates in wireless systems. For example, an apparatus for wireless communication in a power-limited, very wideband system includes a wireless communication device having a media access controller (MAC) and a physical layer (PHY) that are adapted for a multiple-input-multiple-output (MIMO) orthogonal frequency-division multiple access (OFDMA) communication scheme; a plurality of antennas, operationally coupled to said device, to send and receive wireless communication signals according to the MIMO-OFDMA communication scheme; and a resource allocator, to allocate transmission resources of the device into desired MIMO channels optimized according to at least one of signal-to-noise ratio (SNR), bandwidth, number of users, and signal-to-noise-plus-interference ratio (SINR).

摘要翻译： 无线网络资源分配的设备，系统和方法。 实施例包括用于无线系统中极高峰值速率的最佳空频架构。 例如，在功率受限的非常宽带系统中的用于无线通信的装置包括具有媒体接入控制器（MAC）和物理层（PHY）的无线通信设备，该物理层适用于多输入多输出（ MIMO）正交频分多址（OFDMA）通信方案; 多个天线，可操作地耦合到所述设备，以根据MIMO-OFDMA通信方案发送和接收无线通信信号; 以及资源分配器，用于将所述设备的传输资源分配到根据信噪比（SNR），带宽，用户数量以及信噪比加干扰比中的至少一个优化的期望MIMO信道中 （SINR）。

公开(公告)号：US20080240018A1

公开(公告)日：2008-10-02

申请号：US11729451

申请日：2007-03-29

申请人： Feng Xue ,  Sumeet Sandhu

发明人： Feng Xue ,  Sumeet Sandhu

IPC分类号： H04Q7/00

CPC分类号： H04W72/1231 ,  H04B7/2606 ,  H04L25/0328 ,  H04W40/16 ,  H04W40/22 ,  H04W84/047

摘要： Methods, apparatuses and systems for communicating in a wireless network are disclosed. One embodiment includes a method for communication in a wireless network that comprises determining a signal-to-noise ratio (SNR) for channels between a base station, one or more relay stations, and a user and selecting a relay station based on the determined SNRs. Embodiments may also include determining a time sharing parameter and a total transmitting time, transmitting by the base station to the selected relay station for a first duration, and transmitting simultaneously by the base station and relay station using multi-access code for a second duration. The simultaneous transmission may be adapted to be decoded utilizing joint decoding with interference cancellation. Other embodiments are disclosed and claimed.

摘要翻译： 公开了在无线网络中进行通信的方法，装置和系统。 一个实施例包括一种在无线网络中进行通信的方法，包括确定基站，一个或多个中继站和用户之间的信道的信噪比（SNR），并且基于所确定的SNR来选择中继站 。 实施例还可以包括确定基站在第一持续时间内向所选中继站发送的时间共享参数和总发送时间，以及基站和中继站在第二持续时间内使用多接入码同时进行发送。 同时传输可以适于使用具有干扰消除的联合解码来解码。 公开和要求保护其他实施例。

公开(公告)号：US07746822B2

公开(公告)日：2010-06-29

申请号：US11729451

申请日：2007-03-29

申请人： Feng Xue ,  Sumeet Sandhu

发明人： Feng Xue ,  Sumeet Sandhu

IPC分类号： H04B7/14

CPC分类号： H04W72/1231 ,  H04B7/2606 ,  H04L25/0328 ,  H04W40/16 ,  H04W40/22 ,  H04W84/047

摘要： Methods, apparatuses and systems for communicating in a wireless network are disclosed. One embodiment includes a method for communication in a wireless network that comprises determining a signal-to-noise ratio (SNR) for channels between a base station, one or more relay stations, and a user and selecting a relay station based on the determined SNRs. Embodiments may also include determining a time sharing parameter and a total transmitting time, transmitting by the base station to the selected relay station for a first duration, and transmitting simultaneously by the base station and relay station using multi-access code for a second duration. The simultaneous transmission may be adapted to be decoded utilizing joint decoding with interference cancellation. Other embodiments are disclosed and claimed.

摘要翻译： 公开了在无线网络中进行通信的方法，装置和系统。 一个实施例包括一种在无线网络中进行通信的方法，包括确定基站，一个或多个中继站和用户之间的信道的信噪比（SNR），并且基于所确定的SNR来选择中继站 。 实施例还可以包括确定基站在第一持续时间内向所选中继站发送的时间共享参数和总发送时间，以及基站和中继站在第二持续时间内使用多接入码同时进行发送。 同时传输可以适于使用具有干扰消除的联合解码来解码。 公开和要求保护其他实施例。

公开(公告)号：US20090232229A1

公开(公告)日：2009-09-17

申请号：US12049766

申请日：2008-03-17

申请人： Sumeet Sandhu ,  Feng Xue

发明人： Sumeet Sandhu ,  Feng Xue

IPC分类号： H04K1/10

CPC分类号： H04L5/0037 ,  H04L5/0023 ,  H04L5/006 ,  H04W72/0453 ,  H04W72/082 ,  Y02D70/1224 ,  Y02D70/124 ,  Y02D70/1262 ,  Y02D70/142 ,  Y02D70/144 ,  Y02D70/146 ,  Y02D70/162 ,  Y02D70/164 ,  Y02D70/166

摘要： Device, system, and method of resource allocation in a wireless network. Embodiments include optimal space-frequency architectures for very high peak rates in wireless systems. For example, an apparatus for wireless communication in a power-limited, very wideband system includes a wireless communication device having a media access controller (MAC) and a physical layer (PHY) that are adapted for a multiple-input-multiple-output (MIMO) orthogonal frequency-division multiple access (OFDMA) communication scheme; a plurality of antennas, operationally coupled to said device, to send and receive wireless communication signals according to the MIMO-OFDMA communication scheme; and a resource allocator, to allocate transmission resources of the device into desired MIMO channels optimized according to at least one of signal-to-noise ratio (SNR), bandwidth, number of users, and signal-to-noise-plus-interference ratio (SINR).

摘要翻译： 无线网络资源分配的设备，系统和方法。 实施例包括用于无线系统中极高峰值速率的最佳空频架构。 例如，在功率受限的非常宽带系统中的用于无线通信的装置包括具有媒体接入控制器（MAC）和物理层（PHY）的无线通信设备，该物理层适用于多输入多输出（ MIMO）正交频分多址（OFDMA）通信方案; 多个天线，可操作地耦合到所述设备，以根据MIMO-OFDMA通信方案发送和接收无线通信信号; 以及资源分配器，用于将所述设备的传输资源分配到根据信噪比（SNR），带宽，用户数量以及信噪比加干扰比中的至少一个优化的期望MIMO信道中 （SINR）。

公开(公告)号：US20080219251A1

公开(公告)日：2008-09-11

申请号：US11715547

申请日：2007-03-08

申请人： Feng Xue ,  Sumeet Sandhu

发明人： Feng Xue ,  Sumeet Sandhu

IPC分类号： H04L12/56

CPC分类号： H04L1/0041 ,  H03M13/1102 ,  H03M13/13 ,  H03M13/23 ,  H03M13/29 ,  H03M13/2903 ,  H04L45/24 ,  H04L2001/0093 ,  H04L2001/0097

摘要： A method of transmitting two packets to two different nodes may include encoding a first packet according to a first channel to obtain an encoded first packet and encoding a second packet according to a second channel different than the first channel to obtain an encoded second packet. The encoded first packet and the encoded second packet may be combined to obtain a combined encoded packet. The method may include mapping the combined encoded packet to symbols for transmission. The symbols may be transmitted to the two different nodes over the first channel and the second channel.

摘要翻译： 将两个分组发送到两个不同节点的方法可以包括根据第一信道编码第一分组以获得编码的第一分组，并且根据与第一信道不同的第二信道对第二分组进行编码以获得编码的第二分组。 编码的第一分组和编码的第二分组可以被组合以获得组合的编码分组。 该方法可以包括将组合的编码分组映射到用于传输的符号。 符号可以在第一信道和第二信道上被发送到两个不同的节点。

公开(公告)号：US08396147B2

公开(公告)日：2013-03-12

申请号：US12757117

申请日：2010-04-09

申请人： John S. Sadowsky ,  Minnie Ho ,  Eric A. Jacobsen ,  Alexander A. Maltsev ,  Ali S. Sadri ,  Sumeet Sandhu

发明人： John S. Sadowsky ,  Minnie Ho ,  Eric A. Jacobsen ,  Alexander A. Maltsev ,  Ali S. Sadri ,  Sumeet Sandhu

IPC分类号： H04K1/10 ,  H04L27/28

CPC分类号： H04W16/28 ,  H04B7/0408 ,  H04L27/2602 ,  H04W74/02

摘要： A MIMO transmitter and method for transmitting a group of sequential OFDM symbols on a downlink channel using a plurality of antennas is disclosed herein. Groups of OFDM subcarriers are individually modulated in accordance with spatial-frequency subcarrier modulation assignments to generate groups of symbol-modulated subcarriers, corresponding symbol-modulated subcarriers are combined for transmission on each of a plurality of spatial channels, and beamforming is performed on the combined symbol-modulated subcarriers for transmission over the spatial channels. The channel comprises a plurality of the groups of the OFDM subcarriers and the OFDM subcarriers within each group of subcarriers and within each group of sequential OFDM symbols have the same spatial-frequency subcarrier modulation assignments. The spatial-frequency subcarrier modulation assignments for each group are determined based on feedback by a receiver, which is determined from spatial channel characteristics of the spatial channels.

摘要翻译： 这里公开了一种用于使用多个天线在下行链路信道上发送一组顺序OFDM符号的MIMO发射器和方法。 根据空间 - 频率副载波调制分配对OFDM子载波组进行单独调制，以生成符号调制子载波组，将多个空间信道中的每一个组合对应的符号调制副载波进行传输，并对组合 用于在空间信道上传输的符号调制副载波。 信道包括多个OFDM子载波组和每个子载波组内的OFDM子载波，并且在每组顺序OFDM符号内具有相同的空间频率副载波调制分配。 基于由空间信道的空间信道特性确定的接收机的反馈来确定每个组的空间频率副载波调制分配。

公开(公告)号：US08194777B2

公开(公告)日：2012-06-05

申请号：US12836929

申请日：2010-07-15

申请人： Sumeet Sandhu

发明人： Sumeet Sandhu

IPC分类号： H04L1/02

CPC分类号： H04L27/2602 ,  H04L1/0068 ,  H04L1/0071 ,  H04L5/0023 ,  H04L5/0046 ,  H04L25/0216 ,  H04L27/3416

摘要： An apparatus and associated methods for performing space-frequency interleaving in a multicarrier wireless communication system is generally described.

公开(公告)号：US08126077B2

公开(公告)日：2012-02-28

申请号：US12643035

申请日：2009-12-21

申请人： Sumeet Sandhu

发明人： Sumeet Sandhu

IPC分类号： H04B7/02 ,  H04L1/02

CPC分类号： H04L1/0071 ,  H04L1/0618 ,  H04L5/0023 ,  H04L25/0216 ,  H04L27/2602 ,  H04L27/2607 ,  H04L27/2626 ,  H04L27/36

摘要： A multiple-input multiple output (MIMO) transmitter and methods for transmitting orthogonal frequency division multiplexed (OFDM) symbols with cyclic-delay diversity (CDD) are generally described herein. In some embodiments, a base station uses a number of antennas for MIMO transmission of OFDM symbols. For the number of antennas, quadrature-amplitude modulated (QAM) symbols are distributed across a group of OFDM tones of a block comprising the group of tones and a group of OFDM symbols. An incremented cyclic delay is applied to the QAM symbols of the block associated with each subsequent of the antennas for CDD transmission. Each blocks is transmitted by an associated one of the antennas.

摘要翻译： 多输入多输出（MIMO）发射机和用于发送具有循环延迟分集（CDD）的正交频分复用（OFDM）符号的方法）。 在一些实施例中，基站使用多个天线进行OFDM符号的MIMO传输。 对于天线数量，正交幅度调制（QAM）符号分布在包括音调组和一组OFDM符号的块的一组OFDM音调上。 对与用于CDD传输的每个后续天线相关联的块的QAM符号应用递增的循环延迟。 每个块由相关联的一个天线发送。