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1. 发明申请

US20050265290A1 Feedback method for channel state information of a wireless link 审中-公开
标题翻译：无线链路信道状态信息的反馈方法
公开(公告)号：US20050265290A1
公开(公告)日：2005-12-01
申请号：US10856236
申请日：2004-05-28
申请人： Bertrand Hochwald , Thomas Marzetta
发明人： Bertrand Hochwald , Thomas Marzetta
IPC分类号： H04B7/06 , H04B7/216
CPC分类号： H04B7/0626
摘要： The user terminals of a wireless communication system transmit forward channel state information (CSI) to a base station having two or more antennas. The user terminals concurrently transmit pilot signals to the base station in the form of predetermined time sequences of values. The pilot transmissions of respective user terminals are orthogonal to each other, so that reverse CSI can be derived from the pilot signals as received at the base station. The user terminals also concurrently transmit sequences, referred to as “CSI sequences,” that encode channel coefficients for propagation from each of the base station antennas to the user terminals. The CSI sequences are transmitted within enough time of the pilot sequences for the base station to use reverse CSI derived from the pilot sequences to interpret the CSI sequences as received at the base station.
摘要翻译：无线通信系统的用户终端向具有两个或更多个天线的基站发送正向信道状态信息（CSI）。用户终端以预定的时间序列值的形式同时向基站发送导频信号。各个用户终端的导频传输彼此正交，从而可以从在基站接收的导频信号导出反向CSI。用户终端还同时发送称为“CSI序列”的序列，其编码用于从每个基站天线传播到用户终端的信道系数。 CSI序列在导频序列的足够的时间内被发送，以使基站使用从导频序列导出的反向CSI来解释在基站处接收到的CSI序列。

2. 发明授权

US09026123B2 Method and apparatus for managing uplink communication in wireless communication network 有权
标题翻译：用于管理无线通信网络中的上行链路通信的方法和装置
公开(公告)号：US09026123B2
公开(公告)日：2015-05-05
申请号：US12459912
申请日：2009-07-09
申请人： Louay Jalloul , Sriram Mudulodu , Sam P. Alex , Leena Zacharias , Bertrand Hochwald
发明人： Louay Jalloul , Sriram Mudulodu , Sam P. Alex , Leena Zacharias , Bertrand Hochwald
IPC分类号： H04W72/00 , H04L1/00 , H04W24/00 , H04W28/18
CPC分类号： H04W72/085 , H04L1/0003 , H04L1/0009 , H04L1/0015 , H04L1/0021 , H04W24/00 , H04W28/18
摘要： A method for managing uplink communication in wireless communication network is provided. The method includes selecting one or more Mobile Stations (MSs) from a plurality of MSs based on a first signal parameter corresponding to each MS of the one or more MSs, one or more second signal parameters corresponding to each MS of the one or more MSs, and one or more threshold parameters. The first signal parameter is associated with a Base Station (BS) serving a MS. Further, the one or more second signal parameters are associated with one or more BSs neighboring to the MS. The one or more threshold parameters are associated with a communication parameter. Thereafter, the method includes modifying uplink Modulation and Coding Scheme (MCS) level of the one or more MSs.
摘要翻译：提供了一种在无线通信网络中管理上行链路通信的方法。该方法包括基于与一个或多个MS的每个MS对应的第一信号参数从多个MS中选择一个或多个移动站（MS），对应于一个或多个MS的每个MS的一个或多个第二信号参数，以及一个或多个阈值参数。第一信号参数与服务于MS的基站（BS）相关联。此外，一个或多个第二信号参数与与MS相邻的一个或多个BS相关联。一个或多个阈值参数与通信参数相关联。此后，该方法包括修改一个或多个MS的上行链路调制和编码方案（MCS）级别。

3. 发明申请

US20120044919A1 Wireless Transceivers with Filter Arrangement for WiFi and WiMAX Coexsistence 失效
标题翻译：无线收发器具有WiFi和WiMAX共存的过滤器布置
公开(公告)号：US20120044919A1
公开(公告)日：2012-02-23
申请号：US13211933
申请日：2011-08-17
申请人： Kamesh MEDAPALLI , Erik Stauffer , Bertrand Hochwald , William Fujimoto , Yossi (Joseph) Saada , Richard Compton
发明人： Kamesh MEDAPALLI , Erik Stauffer , Bertrand Hochwald , William Fujimoto , Yossi (Joseph) Saada , Richard Compton
IPC分类号： H04W84/02
CPC分类号： H04W88/06 , H04B1/406 , H04B1/44 , H04B1/525
摘要： Embodiments provide WiFi and WiMAX tailored transceiver radio frequency (RF) filtering techniques and configurations to enable coexistence between WiFi and WiMAX transceivers operating in close proximity. In particular, embodiments provide filtering techniques to reject emissions from WiMAX into WiFi, and vice versa. The filtering techniques eliminate the need for additional isolation between WiMAX and WiFi antennas (approximately 50 dB), which is beyond what is achievable in practice. Embodiments can be tailored according to different use cases of the WiFi and WiMAX transceivers (e.g., fixed CPE, portable router, smart phone with tethering).
摘要翻译：实施例提供WiFi和WiMAX定制的收发射频（RF）滤波技术和配置，以实现在接近操作的WiFi和WiMAX收发器之间的共存。具体地，实施例提供了将WiMAX的发射抑制到WiFi的滤波技术，反之亦然。滤波技术消除了对WiMAX和WiFi天线之间的额外隔离的需求（约50dB），这超出了实际可实现的范围。可以根据WiFi和WiMAX收发器（例如，固定CPE，便携式路由器，带有束缚的智能电话）的不同使用情况来定制实施例。

4. 发明申请

US20110223870A1 Allocating Antennas for Cyclic Delay Diversity Transmission 有权
标题翻译：分配天线用于循环延迟分集传输
公开(公告)号：US20110223870A1
公开(公告)日：2011-09-15
申请号：US12815540
申请日：2010-06-15
申请人： Djordje Tujkovic , Vummintala Shashidhar , Erik Stauffer , Rishi Ranjan , Soumen Chakraborty , Bertrand Hochwald , Sriram Rajagopal , Sam Alex
发明人： Djordje Tujkovic , Vummintala Shashidhar , Erik Stauffer , Rishi Ranjan , Soumen Chakraborty , Bertrand Hochwald , Sriram Rajagopal , Sam Alex
IPC分类号： H04B7/02 , H04B1/38
CPC分类号： H04B7/0671 , H04B7/0691
摘要： Methods and apparatus of allocating antennas for cyclic delay diversity (CDD) transmission are disclosed. One method includes estimating a transmission channel of a transceiver having a plurality of antennas. A subset of a plurality of transceiver antennas is selected based on the estimated transmission channel. A single transceiver antenna of the subset is identified based on a channel quality of a transmission path of the single transceiver antenna. Cyclic delay diversity (CDD) signals are transmitted from the subset of the plurality of antennas, wherein a minimally delayed CDD signal is transmitted from the identified single transceiver antenna of the subset of the plurality of transceiver antennas.
摘要翻译：公开了分配用于循环延迟分集（CDD）传输的天线的方法和装置。一种方法包括估计具有多个天线的收发机的传输信道。基于估计的传输信道来选择多个收发天线的子集。基于单个收发器天线的传输路径的信道质量来识别该子集的单个收发天线。从多个天线的子集中发送循环延迟分集（CDD）信号，其中从所述多个收发器天线的子集的所识别的单个收发器天线发送最小延迟的CDD信号。

5. 发明授权

US07929595B2 Estimating frequency offset at a subscriber station receiver 有权
标题翻译：估计用户台接收机的频偏
公开(公告)号：US07929595B2
公开(公告)日：2011-04-19
申请号：US11998240
申请日：2007-11-29
申请人： Sriram Mudulodu , Harold Artes , Bertrand Hochwald , Guojie Dong , Robert G. Lorenz , Javvadi Varaprasad
发明人： Sriram Mudulodu , Harold Artes , Bertrand Hochwald , Guojie Dong , Robert G. Lorenz , Javvadi Varaprasad
IPC分类号： H04L27/18
CPC分类号： H04B7/01 , H04L27/2657 , H04L27/2675
摘要： A method and system of estimating frequency offset at a subscriber station is disclosed. One method includes the subscriber station receiving a composite signal, wherein the composite signal includes multi-carrier signals transmitted from a plurality of base stations. The subscriber station selects a first pair of multi-carrier symbols of the composite signal, wherein each multi-carrier symbol of the first pair of multi-carrier symbols includes a pilot sub-carrier having a common sub-carrier index. The subscriber station selects a second pair of multi-carrier symbols of the composite signal, the second pair having different symbol indices than the first pair, but having a same symbol index separation, wherein each of the multi-carrier symbols of the second pair of multi-carrier symbols includes a pilot sub-carrier having a second common sub-carrier index. The subscriber station estimates a phase based on a first sum of complex conjugate products between received symbols on the pilot sub-carriers of the first pair of multi-carrier symbols, and/or based on a second sum of complex conjugate products between received symbols on the pilot sub-carriers of the second pair of multi-carrier symbols. The subscriber station provides the phase to a filter of a frequency tracking loop of the subscriber station.
摘要翻译：公开了一种估计用户台频偏的方法和系统。一种方法包括用户站接收复合信号，其中复合信号包括从多个基站发送的多载波信号。用户站选择复合信号的第一对多载波符号，其中第一对多载波符号对的每个多载波符号包括具有公共子载波索引的导频子载波。用户站选择复合信号的第二对多载波符号，第二对具有与第一对不同的符号索引，但是具有相同的符号索引分离，其中第二对的多载波符号多载波符号包括具有第二公共子载波索引的导频子载波。用户站基于第一对多载波符号的导频子载波上的接收符号之间的复数共轭乘积的第一和估计相位，和/或基于接收符号之间的复共轭乘积的第二和第二对多载波符号的导频子载波。用户站向用户站的频率跟踪环路的滤波器提供相位。

6. 发明申请

US20100329370A1 Selection of a Subset of Antennas for Transmission 审中-公开
标题翻译：选择天线传输子集
公开(公告)号：US20100329370A1
公开(公告)日：2010-12-30
申请号：US12765686
申请日：2010-04-22
申请人： Bertrand Hochwald , Louay Jalloul , Arogyaswami Paulraj
发明人： Bertrand Hochwald , Louay Jalloul , Arogyaswami Paulraj
IPC分类号： H04K1/10
CPC分类号： H04B7/0691 , H04B7/0671 , H04B17/336
摘要： A method and apparatus of a subscriber station selecting a subset of a plurality of antennas for uplink transmission are disclosed. One method includes a base station transmitting a cyclic delay diversity transmission signal. The subscriber station receives the cyclic delay diversity transmission signal through the plurality of antennas. The subscriber station selects a subset of the plurality of antennas based on a received quality signal parameter. The subscriber station transmits uplink signals to the base station through the selected subset of the plurality of antennas.
摘要翻译：公开了一种选择用于上行链路传输的多个天线的子集的用户站的方法和装置。一种方法包括发送循环延迟分集发送信号的基站。用户站通过多个天线接收循环延迟分集发送信号。用户台基于接收到的质量信号参数选择多个天线的子集。订户台通过多个天线的选定子集向基站发送上行链路信号。

7. 发明申请

US20090316636A1 Selecting a transmission mode between a subscriber and a base station 有权
标题翻译：选择用户和基站之间的传输模式
公开(公告)号：US20090316636A1
公开(公告)日：2009-12-24
申请号：US12456562
申请日：2009-06-18
申请人： Kameswara Medapalli , Djordje Tujkovic , Kamlesh Rath , Louay Jalloul , Bertrand Hochwald
发明人： Kameswara Medapalli , Djordje Tujkovic , Kamlesh Rath , Louay Jalloul , Bertrand Hochwald
IPC分类号： H04W74/00
CPC分类号： H04W72/085 , H04L1/002 , H04L5/0007 , H04L5/006 , H04L5/0094
摘要： Embodiments for a method and apparatus of selecting a transmission mode between the subscriber and a base station are disclosed. One method includes determining a predictive window. Instantaneous channel quality measurements are averaged, wherein the averaging is dependent upon a size of the predictive window. A first estimate of the transmission mode is determined based on the averaged instantaneous channel quality measurements. A margin is calculated based on reception of a qualifying downlink transmission. The transmission mode is selected by updating the first estimate with the margin.
摘要翻译：公开了在用户和基站之间选择传输模式的方法和装置的实施例。一种方法包括确定预测窗口。对瞬时信道质量测量进行平均，其中平均取决于预测窗口的大小。基于平均的瞬时信道质量测量来确定传输模式的第一估计。基于合格的下行链路传输的接收来计算余量。通过用余量更新第一估计来选择传输模式。

8. 发明申请

US20090190488A1 Method of aiding uplink beamforming transmission 有权
标题翻译：协助上行波束成形传输的方法
公开(公告)号：US20090190488A1
公开(公告)日：2009-07-30
申请号：US12074186
申请日：2008-02-29
申请人： Bertrand Hochwald , Harold Artes
发明人： Bertrand Hochwald , Harold Artes
IPC分类号： H04L12/26
CPC分类号： H04B7/0689 , H04B7/0413 , H04B7/0617 , H04B7/0619 , H04B7/0671 , H04B7/0697 , H04W72/08
摘要： A method and apparatus of aiding uplink beamforming transmission is disclosed. One method includes a base station downlink transmitting beamformed signals to at least a first terminal, the beam formed signals directed and conveying data to at least the first terminal. The method further includes a second terminal eavesdropping the transmitted beamformed signals, and measuring a signal quality. The second terminal estimates uplink channel information based on the measured signal quality, for aiding uplink transmission. Based at least in part on the estimated transmission channel, the second terminal transmits beamformed uplink signals to the base station.
摘要翻译：公开了一种辅助上行波束成形传输的方法和装置。一种方法包括基站下行链路向至少第一终端发送波束形成的信号，所述波束形成的信号被引导并将数据传送到至少第一终端。该方法还包括第二终端窃听所发送的波束形成信号，并测量信号质量。第二终端基于测量的信号质量估计上行链路信道信息，用于辅助上行链路传输。至少部分地基于估计的传输信道，第二终端向基站发射波束形成的上行链路信号。

9. 发明授权

US08867459B2 Mobile subscriber information transmission over multiple uplink frames 有权
标题翻译：多个上行链路帧上的移动用户信息传输
公开(公告)号：US08867459B2
公开(公告)日：2014-10-21
申请号：US12837400
申请日：2010-07-15
申请人： Djordje Tujkovic , Louay Jalloul , Bertrand Hochwald
发明人： Djordje Tujkovic , Louay Jalloul , Bertrand Hochwald
IPC分类号： H04W4/00 , H04L5/00 , H04W72/04 , H01Q3/26 , H04W28/06 , H04W76/02
CPC分类号： H04L5/003 , H01Q3/2682 , H04L5/0007 , H04W28/065 , H04W72/04 , H04W76/10
摘要： Methods and apparatuses of a mobile subscriber transmitting information to a base station are disclosed. One method includes identifying an uplink transmission condition. If the uplink transmission condition is identified, the mobile subscriber transmits a message over multiple uplink frames. The mobile subscriber informs the base station that it is transmitting the message over the multiple uplink frames.
摘要翻译：公开了向基站发送信息的移动用户的方法和装置。一种方法包括识别上行链路传输条件。如果识别出上行链路传输条件，则移动用户通过多个上行链路帧发送消息。移动用户通知基站它正在多个上行链路帧上发送消息。

10. 发明授权

US08675761B2 Allocating antennas for cyclic delay diversity transmission 有权
标题翻译：分配天线进行循环延迟分集传输
公开(公告)号：US08675761B2
公开(公告)日：2014-03-18
申请号：US12815540
申请日：2010-06-15
申请人： Djordje Tujkovic , Vummintala Shashidhar , Erik Stauffer , Rishi Ranjan , Soumen Chakraborty , Bertrand Hochwald , Sriram Rajagopal , Sam Alex
发明人： Djordje Tujkovic , Vummintala Shashidhar , Erik Stauffer , Rishi Ranjan , Soumen Chakraborty , Bertrand Hochwald , Sriram Rajagopal , Sam Alex
IPC分类号： H04L1/02
CPC分类号： H04B7/0671 , H04B7/0691
摘要： Methods and apparatus of allocating antennas for cyclic delay diversity (CDD) transmission are disclosed. One method includes estimating a transmission channel of a transceiver having a plurality of antennas. A subset of a plurality of transceiver antennas is selected based on the estimated transmission channel. A single transceiver antenna of the subset is identified based on a channel quality of a transmission path of the single transceiver antenna. Cyclic delay diversity (CDD) signals are transmitted from the subset of the plurality of antennas, wherein a minimally delayed CDD signal is transmitted from the identified single transceiver antenna of the subset of the plurality of transceiver antennas.
摘要翻译：公开了分配用于循环延迟分集（CDD）传输的天线的方法和装置。一种方法包括估计具有多个天线的收发机的传输信道。基于估计的传输信道来选择多个收发天线的子集。基于单个收发器天线的传输路径的信道质量来识别该子集的单个收发天线。从多个天线的子集中发送循环延迟分集（CDD）信号，其中从所述多个收发器天线的子集的所识别的单个收发器天线发送最小延迟的CDD信号。

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