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21.发明授权公开(公告)号：US09860033B2
公开(公告)日：2018-01-02
申请号：US13271113
申请日：2011-10-11
IPC分类号： H04L5/00 , H04L27/26 , H04B7/04 , H04B7/06 , H04B7/0456
CPC分类号： H04L5/0023 , H04B7/0456 , H04B7/061 , H04B7/0671 , H04B7/0691 , H04B7/0697 , H04L27/2602
摘要： Transmission schemes that can flexibly achieve the desired spatial multiplexing order, spatial diversity order, and channel estimation overhead order are described. For data transmission, the assigned subcarriers and spatial multiplexing order (M) for a receiver are determined, where M≧1. For each assigned subcarrier, M virtual antennas are selected from among V virtual antennas formed with V columns of an orthonormal matrix, where V≧M. V may be selected to achieve the desired spatial diversity order and channel estimation overhead order. Output symbols are mapped to the M virtual antennas selected for each assigned subcarrier by applying the orthonormal matrix. Pilot symbols are also mapped to the V virtual antennas. The mapped symbols are provided for transmission from T transmit antennas, where T≧V. Transmission symbols are generated for the mapped symbols, e.g., based on OFDM or SC-FDMA. Different cyclic delays may be applied for the T transmit antennas to improve diversity.
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公开(公告)号：US09088384B2
公开(公告)日：2015-07-21
申请号：US11511735
申请日：2006-08-28
IPC分类号： G11B17/04 , H04B7/216 , H04B1/00 , H04B7/02 , H04J13/10 , H04L25/03 , H04B1/713 , H04L5/00 , H04L25/02
CPC分类号： H04J13/102 , H04B1/713 , H04L5/0026 , H04L5/0051 , H04L25/0204 , H04L25/0226 , H04L25/03866
摘要： Pilot symbols transmitted from different sectors of a same base station are multiplied with a same cell specific scrambling code and a first code having low cross correlation and second codes having low cross correlation. The second code is constant over the length of the first code, but may vary for repetitions of the first code.
摘要翻译： 从相同基站的不同扇区发送的导频符号与相同的小区特定扰码和具有低互相关的第一码和具有低互相关的第二码相乘。 第二个代码在第一个代码的长度上是恒定的，但是对于第一个代码的重复可能会有所不同。
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公开(公告)号：US08937874B2
公开(公告)日：2015-01-20
申请号：US13243899
申请日：2011-09-23
CPC分类号： H04B7/15578
摘要： A method of controlling gains within a repeater may include determining a power control set point value which controls a transmit power of a mobile station (MS), and receiving a downlink signal from a base station transceiver system (BTS). The method may further include measuring a power of the received downlink signal, and computing a power level of a signal expected at the uplink of the repeater, wherein the computing is based on the measured downlink power and the power control set point value. Finally, the method may further include adjusting a gain of at least one amplifier based on the computed power level. An apparatus for controlling gains in a repeater may include a baseband processor for performing the above method.
摘要翻译： 控制中继器内的增益的方法可以包括确定控制移动台（MS）的发射功率的功率控制设定点值，以及从基站收发信机（BTS）接收下行链路信号。 该方法还可以包括测量所接收的下行链路信号的功率，以及计算在中继器的上行链路上预期的信号的功率电平，其中所述计算基于所测量的下行链路功率和功率控制设定点值。 最后，该方法还可以包括基于所计算的功率电平来调整至少一个放大器的增益。 用于控制中继器中的增益的装置可以包括用于执行上述方法的基带处理器。
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公开(公告)号：US08902806B2
公开(公告)日：2014-12-02
申请号：US13069234
申请日：2011-03-22
IPC分类号： H04B7/14 , H04J1/10 , H04J3/08 , H04W4/00 , H04B7/155 , H04B7/26 , H04W16/00 , H04W16/26 , H04W24/02 , H04W84/04
CPC分类号： H04B7/15528 , H04B7/15507 , H04B7/15535 , H04B7/1555 , H04B7/15578 , H04B7/2606 , H04W16/00 , H04W16/26 , H04W24/02 , H04W84/047
摘要： A method of managing macro network coverage among a plurality of repeaters deployed to extend coverage of one or more base stations may include receiving feedback information from at least two repeaters indicative of macro network coverage at locations corresponding to each repeater, determining a coverage status of the macro network based on the feedback information, and sending a control signal to at least one repeater instructing the repeater to adjust one or more operating parameters based on the determined coverage status.
摘要翻译： 在部署以扩展一个或多个基站的覆盖范围的多个中继器之间管理宏网络覆盖的方法可以包括从至少两个中继器接收指示在与每个中继器相对应的位置处的宏网络覆盖的反馈信息，确定 基于所述反馈信息的宏网络，以及基于所确定的覆盖状态，向至少一个中继器发送控制信号，指示所述中继器调整一个或多个操作参数。
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公开(公告)号：US08861429B2
公开(公告)日：2014-10-14
申请号：US13155276
申请日：2011-06-07
IPC分类号： H04W88/04
CPC分类号： H04B7/15542
摘要： A method in a wireless repeater selects one or more carriers out of all carriers for amplification and transmission. The non-selected carriers may be blocked to mitigate delay spread, uplink noise contribution or other effects on the repeater environment due to multiple repeaters. The carriers may be selected based on signal characteristics, signal usage, and/or other parameters.
摘要翻译： 无线中继器中的方法从所有载波中选择一个或多个载波进行放大和发送。 由于多个中继器，可以阻止未选择的载波以减轻延迟扩展，上行链路噪声贡献或对中继器环境的其他影响。 可以基于信号特性，信号使用和/或其他参数来选择载波。
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公开(公告)号：US08849186B2
公开(公告)日：2014-09-30
申请号：US12776728
申请日：2010-05-10
申请人： Dhananjay Ashok Gore , Sanjiv Nanda , James Arthur Proctor, Jr. , Richard Finch Dean , Gwendolyn Denise Barriac
发明人： Dhananjay Ashok Gore , Sanjiv Nanda , James Arthur Proctor, Jr. , Richard Finch Dean , Gwendolyn Denise Barriac
CPC分类号： H04B7/15571 , H04B1/525 , H04B7/15535 , H04B7/2606 , H04W52/365 , H04W84/047 , Y02D70/1262 , Y02D70/142 , Y02D70/144 , Y02D70/146 , Y02D70/40 , Y02D70/446 , Y02D70/449
摘要： A method for providing repeater communication in a wireless repeater deployed in a multi-repeater environment includes inserting a message signal into the transmit signal of the repeater. The message signal may be a unique or quasi-unique low power spreading sequence uniquely identifying the repeater from other repeaters in the environment. The message signal may also contain information relating to the operational characteristics of the repeater. The message signal may be detected by another repeater or by an end-user wireless communication device.
摘要翻译： 一种在部署在多中继器环境中的无线中继器中提供中继器通信的方法包括将消息信号插入到中继器的发送信号中。 消息信号可以是唯一的或准唯一的低功率扩展序列，其唯一地从环境中的其他中继器识别中继器。 消息信号还可以包含与中继器的操作特性有关的信息。 消息信号可以由另一中继器或最终用户无线通信设备检测。
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公开(公告)号：US08774708B2
公开(公告)日：2014-07-08
申请号：US13372385
申请日：2012-02-13
IPC分类号： H04B7/14
CPC分类号： H04B7/15578 , H04B7/15535
摘要： Methods and apparatus for estimating a loop delay value (Ndelay) in an interference cancellation repeater are presented. For example, a method may include setting a repeater gain to an initial gain value, setting a delay parameter to an initial time value, and measuring a loop gain associated with the delay parameter and the repeater gain by detecting a feedback signal with an echo canceller disabled. The method may further include determining whether the measured loop gain is larger than a previously measured loop gain, and if so, designating the delay parameter as the loop delay value (Ndelay); and decrementing the delay parameter when the measured loop gain is not larger than the previously measured loop gain, and when the delay parameter is not at a final time value. The method may iterate until the delay parameter is less than or equal to the final time value.
摘要翻译： 提出了一种用于估计干扰消除中继器中的环路延迟值（Ndelay）的方法和装置。 例如，一种方法可以包括将中继器增益设置为初始增益值，将延迟参数设置为初始时间值，以及通过用回波消除器检测反馈信号来测量与延迟参数和中继器增益相关联的环路增益 残疾人士 该方法还可以包括确定测量的环路增益是否大于先前测量的环路增益，如果是，则将延迟参数指定为环路延迟值（Ndelay）; 并且当测量的环路增益不大于先前测量的环路增益时，以及当延迟参数不在最终时间值时，递减延迟参数。 该方法可以迭代，直到延迟参数小于或等于最终时间值。
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公开(公告)号：US08693405B2
公开(公告)日：2014-04-08
申请号：US11261837
申请日：2005-10-27
IPC分类号： H04B7/00
CPC分类号： H04W72/06 , H04B1/713 , H04B7/026 , H04L5/0023 , H04L5/0037 , H04L5/0044 , H04L5/023
摘要： A method for allocating resources in a wireless communications environment comprises receiving a mapping between a first hop-port and frequency range, and determining whether to map a second access terminal to a second hop-port that is mapped to at least the same frequency range during a substantially similar instance in time, the determination made as a function of characteristics relating to a first access terminal associated with the first hop-port. The method can further include determining that the first access terminal is a candidate for employing Space-Division Multiple Access (SDMA), and mapping the second-hop port and associating the second access terminal with the second hop-port when the second access terminal is also a candidate for employing SDMA.
摘要翻译： 一种用于在无线通信环境中分配资源的方法包括：接收第一跳跃端口和频率范围之间的映射，以及确定是否将第二接入终端映射到映射到至少相同频率范围的第二跳频端口 基本相似的时间实例，根据与与第一跳跃端口相关联的第一接入终端的特性的函数进行确定。 该方法还可以包括确定第一接入终端是采用空分多址（SDMA）的候选者，并且当第二接入终端是第二接入终端时，映射第二跳接口并将第二接入终端与第二跳接口相关联 也是采用SDMA的候选人。
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29.发明授权公开(公告)号：US08542623B2
公开(公告)日：2013-09-24
申请号：US12686608
申请日：2010-01-13
IPC分类号： H04J1/10
CPC分类号： H04B7/15585 , H04B1/525
摘要： A wireless repeater includes an echo canceller to cancel an estimated feedback amount from an input signal and a reference receiver to sample a portion of the transmit signal prior to over-the-air transmission for use as the reference signal for channel estimation. More accurate channel estimation is obtained by using the reference signal from the reference receiver as the reference signal accounts for distortions in the transmitter circuit of the repeater.
摘要翻译： 无线中继器包括回波消除器，以从输入信号和参考接收器消除估计的反馈量，以在空中传输之前对发射信号的一部分进行采样，以用作信道估计的参考信号。 通过使用来自参考接收机的参考信号获得更精确的信道估计，因为参考信号考虑了中继器的发射机电路中的失真。
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30.发明授权Delay control to improve frequency domain channel estimation in an echo cancellation repeater 有权延迟控制，以改善回波消除中继器中的频域信道估计公开(公告)号：US08385818B2
公开(公告)日：2013-02-26
申请号：US12609796
申请日：2009-10-30
申请人： Dhananjay Ashok Gore , Gwendolyn Denise Barriac , James Arthur Proctor, Jr. , Kenneth M. Gainey
发明人： Dhananjay Ashok Gore , Gwendolyn Denise Barriac , James Arthur Proctor, Jr. , Kenneth M. Gainey
IPC分类号： H04Q7/32
CPC分类号： H04B7/15535 , H04B7/15585 , H04L27/2607 , H04L27/2613
摘要： A wireless repeater has a receiving antenna for receiving an input signal and a transmitting antenna for transmitting an amplified signal where the input signal is a sum of a remote signal and a feedback signal. The repeater includes an echo canceller receiving the input signal and generating an echo cancelled signal by estimating a feedback channel between the transmitting antenna and the receiving antenna and cancelling a feedback signal estimate from the input signal, an amplifier for amplifying the echo cancelled signal and providing the amplified signal to the transmitting antenna, and a variable delay element receiving the echo cancelled signal and introducing a first delay to the echo cancelled signal. The first delay is selected to optimize the estimation of the feedback channel, thereby optimizing the cancellation of the feedback signal. The delayed echo cancelled signal is coupled to the echo canceller as a reference signal for estimating the feedback channel.
摘要翻译： 无线中继器具有用于接收输入信号的接收天线和用于发送放大信号的发送天线，其中输入信号是远程信号和反馈信号之和。 中继器包括回波消除器，其接收输入信号并通过估计发射天线和接收天线之间的反馈信道并从输入信号中消除反馈信号估计来产生回波消除信号，放大器用于放大回波消除信号并提供 向发射天线的放大信号，以及接收回声消除信号的可变延迟元件，并向回波消除信号引入第一延迟。 选择第一延迟以优化反馈信道的估计，从而优化反馈信号的消除。 延迟回波消除信号耦合到回波消除器作为用于估计反馈信道的参考信号。
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