公开(公告)号：US20080253337A1

公开(公告)日：2008-10-16

申请号：US11759203

申请日：2007-06-06

申请人： Joonsuk Kim

发明人： Joonsuk Kim

IPC分类号： H04J3/00

CPC分类号： H04B7/0617 ,  H04B7/0634 ,  H04L1/0606 ,  H04L1/0643 ,  H04L5/0023 ,  H04L5/006 ,  H04L25/0204 ,  H04L25/03178 ,  H04L25/03343 ,  H04L25/03866 ,  H04L2025/03414 ,  H04L2025/03426 ,  H04L2025/03802

摘要： Aspects of a method and system for SFBC/STBC transmission of orthogonally coded signals with angle feedback in a diversity transmission system are presented. Exemplary aspects of the system may include one or more circuits that enables generation of a plurality of concurrently transmitted signal groups based on a computed matrix such that a product of the plurality of concurrently transmitted signal groups, the computed matrix and/or a transformed version of the computed matrix, may generate at least one set of orthogonal signals based on at least one rotation angle.

摘要翻译： 提出了一种在分集传输系统中SFBC / STBC传输具有角度反馈的正交编码信号的方法和系统的方面。 系统的示例性方面可以包括一个或多个电路，其能够基于所计算的矩阵来生成多个同时发送的信号组，使得多个同时发送的信号组的乘积，所计算的矩阵和/或变换版本 所计算的矩阵可以基于至少一个旋转角度生成至少一组正交信号。

公开(公告)号：US20070213013A1

公开(公告)日：2007-09-13

申请号：US11450818

申请日：2006-06-09

申请人： Joonsuk Kim

发明人： Joonsuk Kim

IPC分类号： H04B7/00 ,  H04B1/00

CPC分类号： H04B7/0663 ,  H04B7/04 ,  H04B7/0617 ,  H04B7/0634 ,  H04B7/0639 ,  H04B7/066 ,  H04L25/03343 ,  H04L2025/03426 ,  H04L2025/03808 ,  H04W28/06

摘要： Aspects of a method and system for utilizing Givens rotation to reduce feedback information overhead are presented. Aspects of the system may include a receiver that may enable computation of a beamforming matrix for signals received from a transmitter in a multiple input multiple output (MIMO) communication system. The receiver may enable computation of Givens rotation angles and/or phase rotation angles based on the computed beamforming matrix. The receiver may also enable feedback of information containing the Givens rotation angles and/or phase rotation angles to the transmitter.

摘要翻译： 提出了利用Givens旋转来减少反馈信息开销的方法和系统的方面。 系统的方面可以包括可以使得能够在多输入多输出（MIMO）通信系统中从发射机接收的信号计算波束形成矩阵的接收机。 接收机可以基于所计算的波束成形矩阵来实现Givens旋转角度和/或相位旋转角度的计算。 接收机还可以使得能够向发射机反馈包含Givens旋转角度和/或相位旋转角度的信息。

公开(公告)号：US20070054683A1

公开(公告)日：2007-03-08

申请号：US11595363

申请日：2006-11-09

申请人： Christopher Hansen ,  Joonsuk Kim ,  Matthew Fischer ,  Rajugopal Gubbi ,  Jason Trachewsky

发明人： Christopher Hansen ,  Joonsuk Kim ,  Matthew Fischer ,  Rajugopal Gubbi ,  Jason Trachewsky

IPC分类号： H04B17/00 ,  H04Q7/20 ,  H04B15/00 ,  H04B7/00

CPC分类号： H04W16/10 ,  H04W36/06 ,  H04W36/30

摘要： A method and apparatus for dynamic frequency selection in a wireless communication system or network includes processing that begins when an access point determines interference on a wireless channel that is being used by the access point. When the interference exceeds an interference threshold, the access point provides a request packet to affiliated stations being serviced by the access point for channel spectrum information. The processing continues as the affiliated stations generate the channel spectrum information regarding each of the wireless channels in the wireless communication network. The processing proceeds then as the affiliated stations provide the channel spectrum information to the access point via the current wireless channel. The access point interprets the channel spectrum information to determine a desired wireless channel of the plurality of wireless channels within the wireless communication network. The access point then provides a selection packet to the affiliated stations via the current wireless channel to indicate that the access point will begin using the desired wireless channel at a particular future time.

摘要翻译： 一种用于在无线通信系统或网络中进行动态频率选择的方法和装置包括当接入点确定由接入点正在使用的无线信道上的干扰时开始的处理。 当干扰超过干扰阈值时，接入点向由接入点为信道频谱信息服务的附属站提供请求分组。 处理继续，因为附属站产生关于无线通信网络中的每个无线信道的信道频谱信息。 然后，处理继续，随着附属站经由当前无线信道向接入点提供信道频谱信息。 接入点解释信道频谱信息以确定无线通信网络内的多个无线信道的期望的无线信道。 接入点然后经由当前无线信道向附属站提供选择分组，以指示接入点将在特定的未来时间开始使用期望的无线信道。

公开(公告)号：US20060239372A1

公开(公告)日：2006-10-26

申请号：US11168793

申请日：2005-06-28

申请人： Joonsuk Kim

发明人： Joonsuk Kim

IPC分类号： H04B7/02 ,  H04K1/10

CPC分类号： H04B7/0617 ,  H04B7/0417 ,  H04B7/0634

摘要： A method for reduced feedback for beamforming in a wireless communication begins by receiving a baseband signal. The method continues by digitally beamforming the baseband signal using a unitary matrix having polar coordinates.

摘要翻译： 无线通信中用于波束成形的减少反馈的方法开始于接收基带信号。 该方法通过使用具有极坐标的酉矩阵的数字波束成形基带信号来继续。

公开(公告)号：US08804495B2

公开(公告)日：2014-08-12

申请号：US12816352

申请日：2010-06-15

申请人： Peiman Amini ,  Matthew James Fischer ,  Vinko Erceg ,  Joonsuk Kim ,  Joseph Paul Lauer

发明人： Peiman Amini ,  Matthew James Fischer ,  Vinko Erceg ,  Joonsuk Kim ,  Joseph Paul Lauer

IPC分类号： H04H20/71 ,  H04L12/26

CPC分类号： H04L41/0893 ,  H04H20/61 ,  H04H20/72 ,  H04H40/27 ,  H04L43/024

摘要： Carrier sense multiple access (CSMA) for multiple user, multiple access, and/or MIMO wireless communications. In wireless communication systems that operate in supporting communications via one or more clusters, appropriate determination of when to begin making such transmissions on one or more clusters is made in accordance with intelligent carrier sense multiple access (CSMA) that may be performed in a number of different ways. In accordance with this, a cluster may be any combination composed of one or more channels among one or more bands. In supporting multi-cluster access, CSMA may be performed in selecting a primary cluster and performing backoff (e.g., countdown) thereon. After backoff is finished for the primary cluster, and the availability of one or more others clusters is checked, transmissions may be made using the available clusters. Alternatively, backoff may be made for each or multiple (a subset of) clusters or even individually for each respective cluster.

摘要翻译： 用于多用户，多址和/或MIMO无线通信的载波侦听多路访问（CSMA）。 在经由一个或多个集群支持通信的操作的无线通信系统中，根据可以在多个集群中执行的智能载波侦听多路访问（CSMA）来适当地确定何时开始在一个或多个集群上进行这样的传输。 不同的方式。 根据这一点，群集可以是由一个或多个频带中的一个或多个频道组成的任何组合。 在支持多集群访问时，可以在选择主集群并在其上执行退避（例如倒计时）时执行CSMA。 对于主集群的退避完成后，检查一个或多个其他集群的可用性，则可以使用可用集群进行传输。 或者，可以针对每个或多个（子集的）簇进行退避，或者甚至针对每个相应的簇进行退避。

公开(公告)号：US08743994B2

公开(公告)日：2014-06-03

申请号：US13729881

申请日：2012-12-28

申请人： Matthew J. Fischer ,  Joonsuk Kim ,  Christopher J. Hansen ,  Jason A. Trachewsky

发明人： Matthew J. Fischer ,  Joonsuk Kim ,  Christopher J. Hansen ,  Jason A. Trachewsky

IPC分类号： H04W80/00

CPC分类号： H04W80/00 ,  H04B7/0421 ,  H04B7/0617 ,  H04B7/0628 ,  H04B7/0634 ,  H04L1/0026 ,  H04L1/0045 ,  H04L1/0068 ,  H04L1/06 ,  H04L27/2601

摘要： A method for feeding back transmitter beamforming information from a receiving wireless communication device to a transmitting wireless communication device includes a receiving wireless communication device receiving a preamble sequence from the transmitting wireless device. The receiving wireless device estimates a channel response based upon the preamble sequence and then determines an estimated transmitter beamforming unitary matrix based upon the channel response and a receiver beamforming unitary matrix. The receiving wireless device then decomposes the estimated transmitter beamforming unitary matrix to produce the transmitter beamforming information and then wirelessly sends the transmitter beamforming information to the transmitting wireless device.

摘要翻译： 将发射机波束形成信息从接收无线通信设备反馈到发射无线通信设备的方法包括从发射无线设备接收前同步码序列的接收无线通信设备。 接收无线设备基于前导序列估计信道响应，然后基于信道响应和接收机波束成形单位矩阵来确定估计的发射机波束成形单位矩阵。 接收无线设备然后分解估计的发射机波束成形单位矩阵以产生发射机波束形成信息，然后将发射机波束成形信息无线发送到发射无线设备。

公开(公告)号：US08717957B2

公开(公告)日：2014-05-06

申请号：US13023595

申请日：2011-02-09

申请人： Joonsuk Kim ,  Matthew James Fischer

发明人： Joonsuk Kim ,  Matthew James Fischer

IPC分类号： G08C17/00 ,  H04W52/02

CPC分类号： H04W72/0466 ,  H04L1/0053 ,  H04L1/007 ,  H04L1/0071 ,  H04L1/0088 ,  H04L5/0023 ,  H04L5/0053 ,  H04L69/22 ,  H04W52/02 ,  H04W52/0219 ,  H04W52/0222 ,  H04W52/0229 ,  H04W72/042 ,  Y02D70/1222 ,  Y02D70/1224 ,  Y02D70/1244 ,  Y02D70/1246 ,  Y02D70/142 ,  Y02D70/144 ,  Y02D70/162

摘要： Preamble and header bit allocation for power savings within multiple user, multiple access, and/or MIMO wireless communications. Within a multi-user packet, information (e.g., partial address information) related to a recipient group of wireless communication devices (e.g., as few as one wireless communication device or any subset of a number of wireless communication devices, sometimes including all of the wireless communication devices) is emplaced within a PHY (e.g., physical layer) header of such a multi-user packet to be communicated within a multi-user (MU) environment. Such recipient indicating information can be encoded with relatively higher robustness (e.g., lower coding rates, lower ordered modulation, cyclic redundancy check (CRC), etc.) that remaining portions of the multi-user packet. Various portions of the remainder of the multi-user packet may respectively correspond to different wireless communication devices (e.g., a first field for a first wireless communication device, a second field for a second wireless communication device, etc.).

摘要翻译： 前导码和头位分配用于在多用户，多路访问和/或MIMO无线通信中的功率节省。 在多用户分组中，与无线通信设备的接收者组（例如，少至一个无线通信设备或多个无线通信设备的任何子集）相关的信息（例如，部分地址信息）有时包括全部 无线通信设备）被放置在将在多用户（MU）环境内传送的这种多用户分组的PHY（例如，物理层）报头中。 这样的接收者指示信息可以用多个用户分组的剩余部分的相对较高的鲁棒性（例如较低的编码率，较低的有序调制，循环冗余校验（CRC）等）进行编码。 多用户分组的其余部分的各个部分可以分别对应于不同的无线通信设备（例如，第一无线通信设备的第一场，第二无线通信设备的第二场等）。

公开(公告)号：US08706048B2

公开(公告)日：2014-04-22

申请号：US11535794

申请日：2006-09-27

申请人： Joonsuk Kim

发明人： Joonsuk Kim

IPC分类号： H04B7/00

CPC分类号： H04L5/0048 ,  H04B7/0417 ,  H04B7/0617 ,  H04B7/0634 ,  H04B7/0643 ,  H04L25/0204 ,  H04L25/0228 ,  H04L25/03343 ,  H04L2025/03426 ,  H04L2025/03802 ,  H04W74/00

摘要： Aspects of a method and system for explicit feedback with a sounding packet for wireless local area networks (WLAN). Aspects of the system may include a beamforming block that may enable generation of a plurality of RF chain signals based on a current steering matrix, where the current steering matrix may be a non-identity matrix. A processor may enable transmission of a request for feedback information via the plurality of RF chain signals. The request may contain medium access control (MAC) layer protocol data unit (PDU) data and channel sounding information, which may be encapsulated in a physical (PHY) layer PDU.

摘要翻译： 用于针对无线局域网（WLAN）的探测分组进行显式反馈的方法和系统的方面。 系统的方面可以包括波束形成块，其可以使得能够基于当前导引矩阵生成多个RF链信号，其中当前导引矩阵可以是非单位矩阵。 处理器可以经由多个RF链信号来传送对反馈信息的请求。 该请求可以包含媒体访问控制（MAC）层协议数据单元（PDU）数据和信道探测信息，其可以被封装在物理（PHY）层PDU中。

公开(公告)号：US08599804B2

公开(公告)日：2013-12-03

申请号：US12852859

申请日：2010-08-09

申请人： Vinko Erceg ,  Joseph Paul Lauer ,  Matthew James Fischer ,  Peiman Amini ,  Joonsuk Kim

发明人： Vinko Erceg ,  Joseph Paul Lauer ,  Matthew James Fischer ,  Peiman Amini ,  Joonsuk Kim

IPC分类号： H04W4/00 ,  H04L12/28

CPC分类号： H04B7/0684 ,  H04B7/043 ,  H04B7/0452 ,  H04B7/0669 ,  H04B7/0697 ,  H04L1/0003 ,  H04L1/0009 ,  H04L1/0025 ,  H04L1/0075 ,  H04L1/0079 ,  H04L1/06 ,  H04L5/0023 ,  H04L5/005 ,  H04L5/0051 ,  H04L5/0053 ,  H04L69/22 ,  H04W28/06 ,  H04W28/065 ,  H04W84/12

摘要： Distributed signal field for communications within multiple user, multiple access, and/or MIMO wireless communications. In accordance with wireless communications, a signal (SIG) field employed within such packets is distributed or partitioned into at least two separate signal fields (e.g., SIG A and SIG B) that are located in different portions of the packet. A first of the SIG fields includes information that may be processed and decoded by all wireless communication devices, and a second of the SIG fields includes information that is specific to one or more particular wireless communication devices (e.g., a specific wireless communication device or a specific subset of the wireless communication devices). The precise locations of the at least first and second SIG fields within a packet may be varied, including placing a second of the SIG fields (e.g., including user-specific information) adjacent to and preceding a data field in the packet.

公开(公告)号：US08520576B2

公开(公告)日：2013-08-27

申请号：US13196721

申请日：2011-08-02

申请人： Joonsuk Kim ,  Ron Porat ,  Vinko Erceg

发明人： Joonsuk Kim ,  Ron Porat ,  Vinko Erceg

IPC分类号： H04B7/00

CPC分类号： H04B7/0452 ,  H04B7/0413 ,  H04B7/0417 ,  H04B7/043 ,  H04B7/0636 ,  H04B7/0689 ,  H04B7/0871 ,  H04L5/0048 ,  H04W88/06

摘要： Explicit feedback format within single user, multiple user, multiple access, and/or MIMO wireless communications. A beamformer provides a first communication to a beamformee, and based thereon, the beamformee may ascertain certain characteristics associated with the type and format of feedback to be provided to the beamformee via a second communication from the beamformee to the beamformer. For example, the first communication may include indication of a current operational mode, such as whether it is in accordance with single-user multiple input multiple output (SU-MIMO) or multi-user multiple-input-multiple-output (MU-MIMO). Also, the first communication may indicate a requested steering matrix's rank to be employed in accordance with subsequent beamforming by the beamformer. Also, additional information such as that pertaining to per-tone SNR values for each respective space-time stream, per-tone or per-sub-band eigen-values, the particular channel width being employed (e.g., 20, 40, 80, or 160 MHz), etc. may be included within the second communication.