公开(公告)号：US08060033B2

公开(公告)日：2011-11-15

申请号：US12454726

申请日：2009-05-20

申请人： Nageen Himayat ,  Sumeet Sandhu

发明人： Nageen Himayat ,  Sumeet Sandhu

IPC分类号： H04B7/02 ,  H04K1/00 ,  H04L1/02

CPC分类号： H04B7/0669 ,  H04B7/068 ,  H04L1/0041 ,  H04L1/0071 ,  H04L1/0606 ,  H04L27/2601

摘要： A system, apparatus, method and article to manage diversity for a wireless multicarrier communication system are described. An apparatus may include a diversity agent to couple to a transmitter, the diversity agent to convert a determined number of input bits into symbols, interleave the symbols across multiple spatial streams, and map the symbols to tones for each spatial stream. Other embodiments are described and claimed.

摘要翻译： 描述了一种用于管理无线多载波通信系统的分集的系统，装置，方法和文章。 设备可以包括分组代理以耦合到发射机，分集代理将确定数量的输入比特转换为符号，在多个空间流之间交织符号，并将符号映射到每个空间流的音调。 描述和要求保护其他实施例。

公开(公告)号：US07782970B2

公开(公告)日：2010-08-24

申请号：US10789387

申请日：2004-02-26

申请人： Lei Shao ,  Sumit Roy ,  Sumeet Sandhu

发明人： Lei Shao ,  Sumit Roy ,  Sumeet Sandhu

IPC分类号： H04B7/02

CPC分类号： H04L1/0631 ,  H04L1/0606 ,  H04L1/0637

摘要： An apparatus and associated methods to improve diversity gain while preserving channel throughput in a multicarrier communication channel are generally presented.

摘要翻译： 通常呈现了一种在多载波通信信道中保持信道吞吐量的同时提高分集增益的装置和相关方法。

公开(公告)号：US07760678B2

公开(公告)日：2010-07-20

申请号：US11563386

申请日：2006-11-27

申请人： Sumeet Sandhu ,  Ozgur Oyman ,  Timothy F. Cox

发明人： Sumeet Sandhu ,  Ozgur Oyman ,  Timothy F. Cox

IPC分类号： H04B7/14 ,  H04B3/36 ,  H04J1/10 ,  H04J3/08 ,  H04J3/14

CPC分类号： H04L25/14 ,  H04B7/15521 ,  H04B7/15592 ,  H04L1/0013 ,  H04L2001/0097

摘要： Embodiments herein may operate at a cooperating relay station (CRS) in a wireless packet-carrying network (WPCN). A source-to-CRS (SC) link quality of an SC wireless channel may be estimated using signal quality information derived from a packet transmitted by a source station and received by the CRS. A CRS-to-destination (CD) link quality of a CD wireless channel may also be estimated using signal quality information derived from a packet transmitted by a destination station and received by the CRS. A source-to-destination (SD) link quality parameter representing SD link quality may be extracted by the CRS from the packet transmitted by the destination station. The CRS may decide whether to participate with the source station or with another CRS in transmitting an SD packet based upon the SC link quality, the CD link quality, the SD link quality, or a combination thereof. Other embodiments may be described and claimed.

摘要翻译： 本文的实施例可以在无线分组承载网络（WPCN）中的协作中继站（CRS）处操作。 可以使用从源站发送并由CRS接收的分组导出的信号质量信息来估计SC无线信道的源到CRS（SC）链路质量。 也可以使用从由目的地站发送并由CRS接收的分组导出的信号质量信息来估计CD无线信道的CRS到目的地（CD）链路质量。 表示SD链路质量的源到目的地（SD）链路质量参数可以由目的站发送的分组由CRS提取。 CRS可以基于SC链路质量，CD链路质量，SD链路质量或其组合来决定是否与源站或另一个CRS一起发送SD分组。 可以描述和要求保护其他实施例。

公开(公告)号：US20090245159A1

公开(公告)日：2009-10-01

申请号：US12059682

申请日：2008-03-31

申请人： Ozgur Oyman ,  Sumeet Sandhu

发明人： Ozgur Oyman ,  Sumeet Sandhu

IPC分类号： H04B7/14

CPC分类号： H04B7/2606 ,  H04L45/122 ,  H04W4/08 ,  H04W28/22 ,  H04W40/08 ,  H04W40/32 ,  H04W84/18 ,  H04W88/04 ,  Y02D70/1242 ,  Y02D70/142 ,  Y02D70/144 ,  Y02D70/146 ,  Y02D70/22 ,  Y02D70/324 ,  Y02D70/449

摘要： An ad-hoc network system for computing a proposed number of node-clusters that enable a relative threshold data rate. The ad-hoc network system includes a source terminal, a destination terminal, a plurality of relay terminals, and a cluster determination engine. The source terminal sends a network communication to a destination terminal via a plurality of relay terminals. The cluster determination engine computes a threshold data rate, C, for a number of hops, N, based on a transmission power constraint. The cluster determination engine determines a proposed route for the wireless communication from the source terminal to the destination terminal according to the threshold data rate, C.

摘要翻译： 一种用于计算提出数量的能够实现相对阈值数据速率的节点簇的自组织网络系统。 自组织网络系统包括源终端，目的终端，多个中继终端和群集确定引擎。 源终端经由多个中继终端向目的地终端发送网络通信。 集群确定引擎基于传输功率约束计算针对跳数N的阈值数据速率C。 集群确定引擎根据阈值数据速率来确定用于从源终端到目的终端的无线通信的建议路由。

公开(公告)号：US20090147879A1

公开(公告)日：2009-06-11

申请号：US12324580

申请日：2008-11-26

申请人： Sumeet Sandhu

发明人： Sumeet Sandhu

IPC分类号： H04B7/02

CPC分类号： H04W88/06 ,  H04L1/0001 ,  H04L1/06 ,  H04L1/1854 ,  H04L1/188 ,  H04L5/00 ,  H04L27/261 ,  H04W16/28 ,  H04W74/02

摘要： Briefly, in accordance with one embodiment of the invention, a wireless communication system may adaptively switch between a multiple input, multiple output mode and a spatial division, multiple access mode based at least in part on channel conditions and traffic conditions.

摘要翻译： 简而言之，根据本发明的一个实施例，无线通信系统可以至少部分地基于信道条件和业务条件，在多输入多输出模式和空分多址接入模式之间自适应地进行切换。

公开(公告)号：US07529307B2

公开(公告)日：2009-05-05

申请号：US11093743

申请日：2005-03-30

申请人： Sumeet Sandhu ,  David Cheung

发明人： Sumeet Sandhu ,  David Cheung

IPC分类号： H04K1/10 ,  H04L27/28

CPC分类号： H03M13/27

摘要： An interleaver and scheme for interleaving in which highly correlated bits are maximally separated. The scheme involves interleaving a set of bits to be delivered to a modulation system that utilizes a quantity of N carrier frequencies. A first block of N consecutive bits is assigned to each of N bins, on a one-bit-per-one-bin basis. The aforementioned assignment proceeds in a particular sequence. A second block of N consecutive bits is assigned to each of the N bins, on a one-bit-per-one-bin basis. The second block is assigned in the same sequence the first block was assigned. The second block is consecutive to the first block.

摘要翻译： 用于交织的交织器和方案，其中高度相关的比特被最大程度地分离。 该方案涉及交织一组要传送到利用N个载波频率的调制系统的比特。 N个连续位的第一块被分配给每个N个存储体，每个一位一个。 上述分配以特定顺序进行。 N个连续位的第二块被分配给每个N个存储单元，每个一位一个bin。 第二个块以与分配第一个块相同的顺序分配。 第二个块与第一个块连续。

公开(公告)号：US07450489B2

公开(公告)日：2008-11-11

申请号：US10751007

申请日：2003-12-30

申请人： Sumeet Sandhu

发明人： Sumeet Sandhu

IPC分类号： H04J9/00

CPC分类号： H04L25/0232 ,  H04L1/0606 ,  H04L1/0618 ,  H04L5/0023 ,  H04L5/0048 ,  H04L25/0204 ,  H04L25/0226 ,  H04L27/2613

摘要： In a wireless local area network (WLAN) that includes high-throughput communication devices with multiple antennas and legacy communication devices with single antennas, training tones are transmitted over a plurality of spatial channels during a first portion of an orthogonal frequency division multiplexed (OFDM) packet-training preamble. The training tones are interspersed among subcarrier frequencies of the spatial channels. The training tones are retransmitted during a second portion of the packet-training preamble. The training tones are shifted among the subcarrier frequencies of the spatial channels during the retransmission allowing a high-throughput receiving station to perform a channel estimation on different subcarrier frequencies of the spatial channels. The legacy communication devices may receive and process the training tones and may set their network allocation vector to refrain from communicating during a subsequent interval.

摘要翻译： 在包括具有多个天线的高吞吐量通信设备和具有单个天线的传统通信设备的无线局域网（WLAN）中，在正交频分复用（OFDM）的第一部分期间，在多个空间信道上发送训练音调， 分组训练前导码。 训练色调分散在空间通道的子载波频率之间。 在分组训练前导码的第二部分期间重传训练音调。 在重传期间，训练音调在空间信道的子载波频率之间移位，允许高吞吐量接收站在空间信道的不同子载波频率上执行信道估计。 传统通信设备可以接收和处理训练音，并且可以设置其网络分配向量以避免在随后的间隔期间的通信。

公开(公告)号：US07436903B2

公开(公告)日：2008-10-14

申请号：US10954734

申请日：2004-09-29

申请人： Sumeet Sandhu ,  Minnie Ho

发明人： Sumeet Sandhu ,  Minnie Ho

IPC分类号： H03C7/00

CPC分类号： H04L27/2607 ,  H04B7/0671 ,  H04L1/0625

摘要： A multicarrier transmitter may transmit cyclically delayed linear combinations of two or more data streams with three or more antennas. In some embodiments, the multicarrier transmitter may transmit cyclically delayed linear combinations of three data streams with four antennas.

摘要翻译： 多载波发射机可以用三个或更多个天线发送两个或更多个数据流的循环延迟的线性组合。 在一些实施例中，多载波发射机可以用四个天线发射三个数据流的循环延迟的线性组合。

公开(公告)号：US20080080440A1

公开(公告)日：2008-04-03

申请号：US11541188

申请日：2006-09-30

申请人： Mark D. Yarvis ,  Sumeet Sandhu ,  W. Steven Conner

发明人： Mark D. Yarvis ,  Sumeet Sandhu ,  W. Steven Conner

IPC分类号： H04Q7/24

CPC分类号： H04B7/026 ,  H04W40/02

摘要： Methods, protocols and systems for communicating in a multi-hop wireless mesh network may use cooperative diversity transmission techniques in combination with mesh routing. In one example, a cooperation layer may be integrated with MAC and/or PHY layers and generate a plurality of virtual interfaces for use by a mesh routing layer. The plurality of virtual interfaces may include a first interface type defining potential mesh nodes that can be reached without using cooperative diversity transmission techniques, a second interface type defining potential mesh nodes that can be reached by cooperatively transmitting with one neighbor node, and a third interface type defining potential mesh nodes that can be reached by cooperatively transmitting with combinations of two or more neighbor nodes. The mesh routing layer may select which interface to use in determining multi-hop routing based on a range and/or cost metric of a particular virtual interface.

摘要翻译： 用于在多跳无线网状网络中通信的方法，协议和系统可以使用协作分集传输技术与网格路由组合。 在一个示例中，协作层可以与MAC和/或PHY层集成，并且生成多个虚拟接口以供网格路由层使用。 多个虚拟接口可以包括定义可以在不使用协作分集传输技术的情况下可达到的潜在网格节点的第一接口类型，定义可以通过与一个相邻节点协作传输而达到的潜在网格节点的第二接口类型，以及第三接口 类型定义可以通过与两个或更多个相邻节点的组合协作发送来达到的潜在网格节点。 网格路由层可以基于特定虚拟接口的范围和/或成本度量来选择用于确定多跳路由的接口。

公开(公告)号：US07349720B2

公开(公告)日：2008-03-25

申请号：US10955933

申请日：2004-09-30

申请人： Sumeet Sandhu

发明人： Sumeet Sandhu

IPC分类号： H04B1/38 ,  H04M1/00 ,  H04L12/413

CPC分类号： H04B7/0874 ,  Y02D70/142 ,  Y02D70/444

摘要： In a wireless device having multiple receive antennas, wireless medium sensing operations are performed using a reduced number of receive antennas. Receive chains associated with unused receive antennas are deactivated to reduce power consumption within the device.

摘要翻译： 在具有多个接收天线的无线设备中，使用减少数量的接收天线执行无线介质感测操作。 与未使用的接收天线相关的接收链被去激活以减少设备内的功耗。