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公开(公告)号：US09179319B2
公开(公告)日：2015-11-03
申请号：US11260895
申请日：2005-10-27
CPC分类号： H04W16/00 , H04B7/0408 , H04B7/0695 , H04W16/24 , H04W16/28 , H04W72/046 , H04W72/085
摘要： Apparatuses and methodologies are described that enhance performance in a wireless communication system using beamforming transmissions. According to one aspect, a set of transmit beams are defined that simultaneously provides for space division multiplexing, multiple-input multiple output (MIMO transmission and opportunistic beamforming. The addition of a wide beam guarantees a minimum acceptable performance for all user devices.
摘要翻译： 描述了使用波束成形传输来增强在无线通信系统中的性能的装置和方法。 根据一个方面，定义了一组发射波束，其同时提供空分多路复用，多输入多输出（MIMO传输和机会波束成形）。增加宽波束保证所有用户设备的最小可接受性能。
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公开(公告)号：US08874027B2
公开(公告)日：2014-10-28
申请号：US12722714
申请日：2010-03-12
CPC分类号： H04B7/15578
摘要： A method for controlling gain in a wireless repeater implementing echo cancellation determines a signal-to-interference-noise-ratio (SINR) of the input and output signals of the repeater and adjusts the gain of the repeater to optimize an achievable data rate and a coverage area of the repeater. The repeater gain may be decreased to increase the data rate and increase the achievable SINR of the output signal while the coverage area is reduced. Alternately, the repeater gain may be increased to decrease the data rate and decrease the achievable SINR of the output signal while the coverage area is increased.
摘要翻译： 用于控制实现回波消除的无线中继器中的增益的方法确定中继器的输入和输出信号的信噪比（SINR），并且调整中继器的增益以优化可实现的数据速率和 中继器的覆盖区域。 当覆盖区域减小时，可以减小中继器增益以增加数据速率并增加输出信号的可实现SINR。 或者，当覆盖区域增加时，可以增加中继器增益以降低数据速率并降低输出信号的可实现SINR。
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公开(公告)号：US08867987B2
公开(公告)日：2014-10-21
申请号：US12722733
申请日：2010-03-12
CPC分类号： H04B7/15578
摘要： A method for computing a gain control metric used in controlling gain in a wireless repeater operates to store correlation and normalization values associated with the gain control metric for the previous N samples in registers. For each new sample of the gain control input signal, the correlation and normalization values are computed by discarding the multiplication terms of the obsolete sample and adding the multiplication terms of the new sample to the stored correlation and normalization values. In this manner, the complexity of the computation is greatly reduced and the complexity of the computation does not increase with the integration length.
摘要翻译： 用于计算用于控制无线中继器中的增益的增益控制度量的方法用于存储与寄存器中先前N个采样的增益控制度量相关联的相关和归一化值。 对于增益控制输入信号的每个新样本，通过舍弃过时采样的乘法项和将新采样的乘法项加到存储的相关和归一化值来计算相关和归一化值。 以这种方式，大大降低了计算的复杂度，并且计算的复杂度不会随着积分长度而增加。
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104.发明授权Echo cancellation repeater using an inserted pilot with gain-based power level control scheme 失效使用带有增益的功率电平控制方案的插入导频的回波消除中继器公开(公告)号：US08687540B2
公开(公告)日：2014-04-01
申请号：US13155275
申请日：2011-06-07
CPC分类号： H04B7/15585
摘要： A device for generating a pilot signal for use in a wireless repeater where the pilot signal is added to a transmit signal for transmission includes a pilot power control unit configured to set a power level of the pilot signal as a function of a gain of the repeater and a power level of the transmit signal, where the function comprises a linear or non-linear function. In one embodiment, the operation of the repeater may be divided into gain regions and the inserted pilot power is controlled according to the different gain regions of the repeater. When the repeater gain is low, the pilot power may be set greater than the transmit power to ensure there is sufficient signal to use for channel estimation. When the repeater gain is in steady state, the pilot power may be set to be lower than the transmit power to avoid interference.
摘要翻译： 一种用于生成用于无线中继器的导频信号的装置，其中导频信号被添加到用于传输的发射信号中的导频功率控制单元被配置为将导频信号的功率电平设置为中继器的增益的函数 以及发射信号的功率电平，其中该功能包括线性或非线性函数。 在一个实施例中，中继器的操作可以被划分为增益区域，并且插入的导频功率根据中继器的不同的增益区域被控制。 当中继器增益低时，导频功率可以被设置为大于发射功率，以确保有足够的信号用于信道估计。 当中继器增益处于稳定状态时，可以将导频功率设置为低于发射功率以避免干扰。
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公开(公告)号：US08547951B2
公开(公告)日：2013-10-01
申请号：US12791702
申请日：2010-06-01
CPC分类号： H04J11/005 , H04B1/7143
摘要： A channel structure has at least two channel sets. Each channel set contains multiple channels and is associated with a specific mapping of the channels to the system resources available for data transmission. Each channel set may be defined based on a channel tree having a hierarchical structure. To achieve intra-cell interference diversity, the channel-to-resource mapping for each channel set is pseudo-random with respect to the mapping for each remaining channel set. In each scheduling interval, terminals are scheduled for transmission on the forward and/or reverse link. The scheduled terminals are assigned channels from the channel sets. Multiple terminals may use the same system resources and their overlapping transmissions may be separated in the spatial domain. For example, beamforming may be performed to send multiple overlapping transmissions on the forward link, and receiver spatial processing may be performed to separate out multiple overlapping transmissions received on the reverse link.
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106.发明授权Pilot transmission and channel estimation for an OFDM system with excess delay spread 有权具有超延迟扩展的OFDM系统的导频传输和信道估计公开(公告)号：US08537908B2
公开(公告)日：2013-09-17
申请号：US12041510
申请日：2008-03-03
IPC分类号： H04K1/10
CPC分类号： H04L25/0226 , H04L5/0007 , H04L5/0048 , H04L25/0202 , H04L25/0212 , H04L27/2607 , H04L27/2647
摘要： Pilot transmission and channel estimation techniques for an OFDM system with excess delay spread are described. To mitigate the deleterious effects of excess delay spread, the number of pilot subbands is greater than the cyclic prefix length. This “oversampling” may be achieved by using more pilot subbands in each symbol period or different sets of pilot subbands in different symbol periods. In one example, a first set of pilot subbands may be received in a first symbol period, and a second set of pilot subbands may be received in a second symbol period. The first set of pilot subbands and the second set of pilot subbands may be staggered in frequency.
摘要翻译： 描述了具有超延迟扩展的OFDM系统的导频传输和信道估计技术。 为了减轻多余的延迟扩展的有害影响，导频子带的数量大于循环前缀长度。 这种“过采样”可以通过在每个符号周期中使用更多的导频子带或在不同的符号周期内使用不同的导频子带集来实现。 在一个示例中，可以在第一符号周期中接收第一组导频子带，并且可以在第二符号周期中接收第二组导频子带。 第一组导频子带和第二组导频子带可以以频率交错。
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公开(公告)号：US08477710B2
公开(公告)日：2013-07-02
申请号：US11022144
申请日：2004-12-22
IPC分类号： H04W4/00
摘要： A method and apparatus are provided to manage the assignment transmission resource of forward and reserve link that is assigned to transmitting entity for a period of time. An indication of a gap is provided whenever the transmitting entity is not transmitting actual data packets (e.g. whole or part of intended data or content), yet the transmitting entity is to maintain the assignment of the allocated resource. For example, an erasure signature packet comprising a first data pattern is transmitted on the assigned resource when there is no actual data to transmit on the assigned resource.
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公开(公告)号：US20130142222A1
公开(公告)日：2013-06-06
申请号：US13312533
申请日：2011-12-06
IPC分类号： H04L25/52
CPC分类号： H04B7/15578
摘要： A wireless repeater incorporates a gain management block to implement a multi-parameter gain management algorithm. The gain management algorithm receives gain settings from at least a gain control metric for stability and output signal quality and signal headroom values associated with circuitry of the repeater. The gain management block provides secure and robust boot-up of the repeater as well as oscillation detection and prevention. Furthermore, the gain management block implements repeater stability control, output signal-to-noise level control, uplink and downlink gain balance control and compensation for device constraints.
摘要翻译： 无线中继器包含增益管理块以实现多参数增益管理算法。 增益管理算法从至少一个增益控制度量接收增益设置，用于稳定性和输出信号质量以及与中继器的电路相关联的信号余量值。 增益管理块提供中继器的安全可靠的启动以及振荡检测和防止。 此外，增益管理块实现中继器稳定性控制，输出信噪比电平控制，上行链路和下行链路增益平衡控制以及器件约束的补偿。
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109.发明申请公开(公告)号：US20130077556A1
公开(公告)日：2013-03-28
申请号：US13243822
申请日：2011-09-23
CPC分类号： H04B7/15578
摘要： A method of controlling gains in an interference cancellation repeater includes receiving a combined signal which comprises a downlink signal transmitted from a base station transceiver system (BTS) and a feedback signal. The method further includes performing interference cancellation on the combined signal to substantially remove the feedback signal from the downlink signal. The method further includes determining a path loss between the BTS and the interference cancellation repeater based on the downlink signal after interference cancellation is performed, and adjusting at least one gain in the interference cancellation repeater based on the path loss. An interference cancellation repeater which controls gains based on a downlink path loss includes a first and second transceiver coupled to a first and second antenna, respectively, and a baseband processor configure to perform the above method.
摘要翻译： 一种控制干扰消除中继器中的增益的方法包括接收包括从基站收发器系统（BTS）发送的下行链路信号和反馈信号的组合信号。 该方法还包括对组合信号执行干扰消除以基本上从该下行链路信号去除反馈信号。 该方法还包括基于干扰消除后的下行链路信号来确定BTS与干扰消除中继器之间的路径损耗，并且基于路径损耗来调整干扰消除中继器中的至少一个增益。 基于下行链路路径损耗控制增益的干扰消除中继器分别包括耦合到第一和第二天线的第一和第二收发器，以及配置为执行上述方法的基带处理器。
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110.发明授权User separation in space division multiple access for a multi-carrier communication system 有权用于多载波通信系统的空分多址的用户分离公开(公告)号：US08363603B2
公开(公告)日：2013-01-29
申请号：US11333890
申请日：2006-01-18
申请人： Min Dong , Tingfang Ji , Dhananjay Ashok Gore , Alexei Gorokhov , Arak Sutivong
发明人： Min Dong , Tingfang Ji , Dhananjay Ashok Gore , Alexei Gorokhov , Arak Sutivong
IPC分类号： H04W4/00
CPC分类号： H04B7/0617 , H04B7/0452 , H04W16/04 , H04W16/28
摘要： Apparatuses and methodologies are described that increase system capacity in a multi-access wireless communication system. Spatial dimensions may be utilized to distinguish between multiple signals utilizing the same channel and thereby increase system capacity. Signals may be separated by applying beamforming weights based upon the spatial signature of the user device-base station pair. Grouping spatially orthogonal or disparate user devices on the same channel facilitates separation of signals and maximization of user device throughput performance. User devices may be reassigned to groups periodically or based upon changes in the spatial relationships between the user devices and the base station.
摘要翻译： 描述了增加多址无线通信系统中的系统容量的装置和方法。 可利用空间维度来区分使用相同信道的多个信号，从而增加系统容量。 可以基于用户设备 - 基站对的空间签名应用波束成形权重来分离信号。 在相同信道上对空间正交或不同用户设备进行分组有助于信号分离和用户设备吞吐量性能的最大化。 用户设备可以周期性地或基于用户设备和基站之间的空间关系的改变重新分配给组。
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