公开(公告)号：US20050135318A1

公开(公告)日：2005-06-23

申请号：US10964330

申请日：2004-10-13

申请人： Jay Walton ,  John Ketchum ,  Sanjiv Nanda

发明人： Jay Walton ,  John Ketchum ,  Sanjiv Nanda

IPC分类号： H04B7/005 ,  H04L12/66 ,  H04L29/06 ,  H04L12/56

CPC分类号： H04L12/66 ,  H04L29/06 ,  H04L69/08 ,  H04L69/24 ,  H04W52/383

摘要： Techniques for MAC processing for efficient use of high throughput systems that is backward compatible with various types of legacy systems are disclosed. In one aspect a first signal is transmitted according to a legacy transmission format to reserve a portion of a shared medium, and communication according to a second transmission format transpires during the reserved portion. In another aspect, a communication device may contend for access on a legacy system, and then communicate according to a new class communication protocol with one or more remote communication devices during the access period. In another aspect, a device may request access to a shared medium according to a legacy protocol, and, upon grant of access, the device may communicate with or facilitate communication between one or more remote stations according to a new protocol.

摘要翻译： 公开了用于有效利用与各种类型的遗留系统向后兼容的高吞吐量系统的MAC处理技术。 在一个方面，根据传统的传输格式传输第一信号以保留共享介质的一部分，并且在保留部分期间发送根据第二传输格式的通信。 在另一方面，通信设备可以竞争在遗留系统上进行访问，然后在访问周期期间根据新的类通信协议与一个或多个远程通信设备进行通信。 在另一方面，设备可以根据传统协议请求对共享介质的访问，并且在授权访问时，设备可以根据新协议与一个或多个远程站通信或促进一个或多个远程站之间的通信。

公开(公告)号：US20050135416A1

公开(公告)日：2005-06-23

申请号：US10964237

申请日：2004-10-13

申请人： John Ketchum ,  Jay Walton ,  Sanjiv Nanda

发明人： John Ketchum ,  Jay Walton ,  Sanjiv Nanda

IPC分类号： H04L12/28 ,  H04L12/56 ,  H04L25/03 ,  H04L29/06 ,  H04L29/08 ,  H01L29/792

CPC分类号： H04W28/065 ,  H04L1/1635 ,  H04L25/03343 ,  H04L29/06 ,  H04L47/2441 ,  H04L69/16 ,  H04L69/161 ,  H04L69/22 ,  H04L69/32 ,  H04W80/02 ,  H04W84/12

摘要： Embodiments addressing MAC processing for efficient use of high throughput systems are disclosed. In one aspect, a protocol stack is disclosed comprising one or more of the following: an adaptation layer, a data link control layer, a physical layer, and a layer manager. In another aspect, physical layer feedback is used for adaptation layer processing. In one embodiment, physical layer feedback is used for segmentation. In another embodiment, physical layer feedback is used for multicast mapping onto one or more unicast channels. In another aspect, a data unit for transmission from a first station to a second station comprises zero or more complete sub-data units, zero or one partial sub-data units from a prior transmission, and zero or one partial sub-data units to fill the data unit. In one embodiment, a pointer may be used to indicate the location of any complete sub-data units.

摘要翻译： 公开了解决用于高吞吐量系统的有效使用的MAC处理的实施例。 一方面，公开了一种协议栈，其包括以下一个或多个：适配层，数据链路控制层，物理层和层管理器。 在另一方面，物理层反馈用于适应层处理。 在一个实施例中，物理层反馈用于分割。 在另一个实施例中，物理层反馈用于到一个或多个单播信道上的多播映射。 在另一方面，用于从第一站到第二站的传输的数据单元包括零个或多个完整的子数据单元，来自先前传输的零个或一个部分子数据单元，以及零个或一个部分子数据单元 填写数据单元。 在一个实施例中，可以使用指针来指示任何完整的子数据单元的位置。

公开(公告)号：US20050135403A1

公开(公告)日：2005-06-23

申请号：US10964332

申请日：2004-10-13

申请人： John Ketchum ,  Mark Wallace ,  Jay Walton ,  Sanjiv Nanda

发明人： John Ketchum ,  Mark Wallace ,  Jay Walton ,  Sanjiv Nanda

IPC分类号： H04L12/56 ,  H04L29/06 ,  H04L29/08

CPC分类号： H04L29/06 ,  H04L69/32 ,  H04L69/324 ,  H04L69/325

摘要： Embodiments addressing MAC processing for efficient use of high throughput systems are disclosed. In one aspect, an apparatus comprises a first layer for receiving one or more packets from one or more data flows and for generating one or more first layer Protocol Data Units (PDUs) from the one or more packets. In another aspect, a second layer is deployed for generating one or more MAC frames based on the one or more MAC layer PDUs. In another aspect, a MAC frame is deployed for transmitting one or more MAC layer PDUs. The MAC frame may comprise a control channel for transmitting one or more allocations. The MAC frame may comprise one or more traffic segments in accordance with allocations.

摘要翻译： 公开了解决用于高吞吐量系统的有效使用的MAC处理的实施例。 在一个方面，一种装置包括用于从一个或多个数据流接收一个或多个分组并用于从所述一个或多个分组生成一个或多个第一层协议数据单元（PDU）的第一层。 在另一方面，第二层被部署用于基于一个或多个MAC层PDU生成一个或多个MAC帧。 在另一方面，部署MAC帧以发送一个或多个MAC层PDU。 MAC帧可以包括用于发送一个或多个分配的控制信道。 MAC帧可以包括根据分配的一个或多个业务段。

公开(公告)号：US20050135291A1

公开(公告)日：2005-06-23

申请号：US10964320

申请日：2004-10-13

申请人： John Ketchum ,  Jay Walton ,  Sanjiv Nanda

发明人： John Ketchum ,  Jay Walton ,  Sanjiv Nanda

IPC分类号： H04L12/28 ,  H04L12/56 ,  H04L29/06 ,  H04J3/06

CPC分类号： H04W72/1273 ,  H04L29/06 ,  H04L69/08 ,  H04L69/24 ,  H04W28/065

摘要： Embodiments addressing MAC processing for efficient use of high throughput systems are disclosed. In one aspect, a protocol stack is disclosed comprising one or more of the following: an adaptation layer, a data link control layer, a physical layer, and a layer manager. In another aspect, physical layer feedback is used for adaptation layer processing. In one embodiment, physical layer feedback is used for segmentation. In another embodiment, physical layer feedback is used for multicast mapping onto one or more unicast channels. In another aspect, a data unit for transmission from a first station to a second station comprises zero or more complete sub-data units, zero or one partial sub-data units from a prior transmission, and zero or one partial sub-data units to fill the data unit. In one embodiment, a pointer may be used to indicate the location of any complete sub-data units.

摘要翻译： 公开了解决用于高吞吐量系统的有效使用的MAC处理的实施例。 一方面，公开了一种协议栈，其包括以下一个或多个：适配层，数据链路控制层，物理层和层管理器。 在另一方面，物理层反馈用于适应层处理。 在一个实施例中，物理层反馈用于分割。 在另一个实施例中，物理层反馈用于到一个或多个单播信道上的多播映射。 在另一方面，用于从第一站到第二站的传输的数据单元包括零个或多个完整的子数据单元，来自先前传输的零个或一个部分子数据单元，以及零个或一个部分子数据单元 填写数据单元。 在一个实施例中，可以使用指针来指示任何完整的子数据单元的位置。

公开(公告)号：US20050195733A1

公开(公告)日：2005-09-08

申请号：US10794918

申请日：2004-03-05

申请人： J. Walton ,  John Ketchum ,  Mark Wallace ,  Steven Howard ,  Sanjiv Nanda

发明人： J. Walton ,  John Ketchum ,  Mark Wallace ,  Steven Howard ,  Sanjiv Nanda

IPC分类号： H04J99/00 ,  H04B7/04 ,  H04B7/06 ,  H04L27/26 ,  H04J11/00

CPC分类号： H04B7/0615 ,  H04B7/0413 ,  H04L27/2602

摘要： A multi-antenna transmitting entity transmits data to a single- or multi-antenna receiving entity using (1) a steered mode to direct the data transmission toward the receiving entity or (2) a pseudo-random transmit steering (PRTS) mode to randomize the effective channels observed by the data transmission across the subbands. The PRTS mode may be used to achieve transmit diversity or spatial spreading. For transmit diversity, the transmitting entity uses different pseudo-random steering vectors across the subbands but the same steering vector across a packet for each subband. The receiving entity does not need to have knowledge of the pseudo-random steering vectors or perform any special processing. For spatial spreading, the transmitting entity uses different pseudo-random steering vectors across the subbands and different steering vectors across the packet for each subband. Only the transmitting and receiving entities know the steering vectors used for data transmission.

摘要翻译： 多天线发射实体使用（1）向接收实体指导数据传输的导向模式或（2）伪随机发射转向（PRTS）模式来将数据发送到单天线或多天线接收实体，以随机化 通过子带上的数据传输观察到的有效信道。 PRTS模式可以用于实现发射分集或空间扩展。 对于发射分集，发射实体在子带上使用不同的伪随机导引向量，但是在每个子带的分组上使用相同的导向向量。 接收实体不需要具有伪随机导引向量的知识或执行任何特殊处理。 对于空间扩展，发射实体在子带上使用不同的伪随机导引向量，并且跨每个子带的分组使用不同的导向矢量。 只有发送和接收实体知道用于数据传输的导向向量。

公开(公告)号：US20050180312A1

公开(公告)日：2005-08-18

申请号：US10781951

申请日：2004-02-18

申请人： J. Walton ,  John Ketchum ,  Mark Wallace ,  Steven Howard ,  Sanjiv Nanda

发明人： J. Walton ,  John Ketchum ,  Mark Wallace ,  Steven Howard ,  Sanjiv Nanda

IPC分类号： H04B7/04 ,  H04B7/06 ,  H04J99/00 ,  H04L1/06 ,  H04L25/02 ,  H04L27/26 ,  H04J11/00

CPC分类号： H04B7/0413 ,  H04B7/0408 ,  H04B7/0617 ,  H04B7/0695 ,  H04L1/06 ,  H04L5/0023 ,  H04L5/0048 ,  H04L25/0204 ,  H04L25/0226

摘要： A multi-antenna transmitting entity transmits data to a single- or multi-antenna receiving entity using (1) a steered mode to direct the data transmission toward the receiving entity or (2) a pseudo-random transmit steering (PRTS) mode to randomize the effective channels observed by the data transmission across the subbands. The PRTS mode may be used to achieve transmit diversity or spatial spreading. For transmit diversity, the transmitting entity uses different pseudo-random steering vectors across the subbands but the same steering vector across an entire packet for each subband. The receiving entity does not need to have knowledge of the pseudo-random steering vectors or perform any special processing. For spatial spreading, the transmitting entity uses different pseudo-random steering vectors across the subbands and different steering vectors across the packet for each subband. Only the transmitting and receiving entities know the steering vectors used for data transmission.

摘要翻译： 多天线发射实体使用（1）向接收实体指导数据传输的导向模式或（2）伪随机发射转向（PRTS）模式来将数据发送到单天线或多天线接收实体，以随机化 通过子带上的数据传输观察到的有效信道。 PRTS模式可以用于实现发射分集或空间扩展。 对于发射分集，发射实体在子带上使用不同的伪随机导向矢量，但是在每个子带的整个分组上使用相同的导向矢量。 接收实体不需要具有伪随机导引向量的知识或执行任何特殊处理。 对于空间扩展，发射实体在子带上使用不同的伪随机导引向量，并且跨每个子带的分组使用不同的导向矢量。 只有发送和接收实体知道用于数据传输的导向向量。

公开(公告)号：US20100002570A9

公开(公告)日：2010-01-07

申请号：US10794918

申请日：2004-03-05

申请人： J. Walton ,  John Ketchum ,  Mark Wallace ,  Steven Howard ,  Sanjiv Nanda

发明人： J. Walton ,  John Ketchum ,  Mark Wallace ,  Steven Howard ,  Sanjiv Nanda

IPC分类号： H04J11/00

CPC分类号： H04B7/0615 ,  H04B7/0413 ,  H04L27/2602

摘要： A multi-antenna transmitting entity transmits data to a single- or multi-antenna receiving entity using (1) a steered mode to direct the data transmission toward the receiving entity or (2) a pseudo-random transmit steering (PRTS) mode to randomize the effective channels observed by the data transmission across the subbands. The PRTS mode may be used to achieve transmit diversity or spatial spreading. For transmit diversity, the transmitting entity uses different pseudo-random steering vectors across the subbands but the same steering vector across a packet for each subband. The receiving entity does not need to have knowledge of the pseudo-random steering vectors or perform any special processing. For spatial spreading, the transmitting entity uses different pseudo-random steering vectors across the subbands and different steering vectors across the packet for each subband. Only the transmitting and receiving entities know the steering vectors used for data transmission.

摘要翻译： 多天线发射实体使用（1）向接收实体指导数据传输的导向模式或（2）伪随机发射转向（PRTS）模式来将数据发送到单天线或多天线接收实体，以随机化 通过子带上的数据传输观察到的有效信道。 PRTS模式可以用于实现发射分集或空间扩展。 对于发射分集，发射实体在子带上使用不同的伪随机导引向量，但是在每个子带的分组上使用相同的导向向量。 接收实体不需要具有伪随机导引向量的知识或执行任何特殊处理。 对于空间扩展，发射实体在子带上使用不同的伪随机导引向量，并且跨每个子带的分组使用不同的导向矢量。 只有发送和接收实体知道用于数据传输的导向向量。

公开(公告)号：US20060274849A1

公开(公告)日：2006-12-07

申请号：US11500852

申请日：2006-08-07

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

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

IPC分类号： H04L1/02

CPC分类号： H04B7/0617 ,  H04B7/0413 ,  H04B7/0443 ,  H04B7/0854 ,  H04L25/0204 ,  H04L25/0212 ,  H04L25/0248 ,  H04L25/03057 ,  H04L27/2608

摘要： Techniques for processing a data transmission at the transmitter and receiver. In an aspect, a time-domain implementation is provided which uses frequency-domain singular value decomposition and “water-pouring” results to derive time-domain pulse-shaping and beam-steering solutions at the transmitter and receiver. The singular value decomposition is performed at the transmitter to determine eigen-modes (i.e., spatial subchannels) of the MIMO channel and to derive a first set of steering vectors used to “precondition” modulation symbols. The singular value decomposition is also performed at the receiver to derive a second set of steering vectors used to precondition the received signals such that orthogonal symbol streams are recovered at the receiver, which can simplify the receiver processing. Water-pouring analysis is used to more optimally allocate the total available transmit power to the eigen-modes, which then determines the data rate and the coding and modulation scheme to be used for each eigen-mode.

公开(公告)号：US20060116155A1

公开(公告)日：2006-06-01

申请号：US11330733

申请日：2006-01-11

申请人： Irina Medvedev ,  Jay Walton ,  John Ketchum

发明人： Irina Medvedev ,  Jay Walton ,  John Ketchum

IPC分类号： H04B7/00 ,  H04Q7/20

CPC分类号： H04W52/346 ,  H04B7/0443 ,  H04W24/00 ,  H04W52/241 ,  H04W52/267 ,  H04W52/50 ,  H04W72/00

摘要： Techniques to allocate the total transmit power to the transmission channels in a multi-channel communication system such that higher overall system spectral efficiency and/or other benefits may be achieved. The total transmit power may be initially allocated to the transmission channels based on a particular power allocation scheme (e.g., the water-filling scheme). The initial allocation may result in more power being allocated to some transmission channels than needed to achieve the required SNR (e.g., the SNR needed to achieve the maximum allowed data rate), which would then result in these transmission channels being operated in the saturation region. In such situations, the techniques reallocate the excess transmit power of transmission channels operated in the saturation region to other transmission channels operated below the saturation region. In this way, higher data rate may be achieved for the “poorer” transmission channels without sacrificing the performance of the “better” transmission channels.

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。