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101.发明授权Simplified channel and interference estimation with dedicated pilot tones for OFDMA 有权用于OFDMA的专用导频音调的简化信道和干扰估计公开(公告)号：US07751510B2
公开(公告)日：2010-07-06
申请号：US11493643
申请日：2006-07-25
CPC分类号： H04L25/023 , H04B17/345 , H04L5/0007 , H04L5/0016 , H04L5/0032 , H04L5/0051 , H04L25/0204 , H04L25/021 , H04L25/0224 , H04L25/0248 , H04L25/03866 , H04L27/2647
摘要： Estimation of channel characteristics and interference level in a time-varying multi-carrier multi-user systems is carried out concurrently. To perform the estimation, a multitude of data symbols and dedicated pilot symbols are transmitted over the channel. The estimate of the interference level is used to estimate the channel parameters.
摘要翻译： 并行执行时变多载波多用户系统中的信道特性和干扰电平的估计。 为了执行估计，通过信道发送多个数据符号和专用导频符号。 干扰电平的估计用于估计信道参数。
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公开(公告)号：US20100074219A1
公开(公告)日：2010-03-25
申请号：US12234990
申请日：2008-09-22
IPC分类号： H04Q7/00
CPC分类号： H04W56/004 , H04W36/00
摘要： Methods and apparatus for reverse link timing correction in a wireless communication device. In particular, when a handoff of the device from a first sector currently serving the device to a second sector not currently serving the device is detected, a first function linking timing correction of a reverse link of the device to forward link timing corrections is changed to a second function for timing correction. In particular, the second function is configured to correct reverse link timing during a time period of either during or for a predetermined period after a handoff of the device from the first sector to the second sector, where the second function is based on a criterion different from criteria of the first function.
摘要翻译： 无线通信设备中反向链路定时校正的方法和装置。 特别地，当检测到设备从当前正在服务于设备的第一扇区到当前不在该设备服务的第二扇区的切换时，将设备的反向链路的定时校正链接到转发链路定时校正的第一功能改变为 用于定时校正的第二功能。 特别地，第二功能被配置为在设备从第一扇区切换到第二扇区之后的预定时段期间或在预定时段期间的时间段期间校正反向链路定时，其中第二功能基于不同的标准 从第一个功能的标准。
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公开(公告)号：US09185711B2
公开(公告)日：2015-11-10
申请号：US13229426
申请日：2011-09-09
申请人： Dexu Lin , Ravi Palanki , Dhananjay Ashok Gore
发明人： Dexu Lin , Ravi Palanki , Dhananjay Ashok Gore
CPC分类号： H04W72/082 , H04B7/15542 , H04B7/15571 , H04W84/047
摘要： Methods and apparatuses are provided that include selecting resources for assigning to a device to mitigate relay self-interference when also communicating with a base station. The resources can be selected based on one or more factors, such as based on resources that are negotiated with the base station, or based on resources indicated as not desired for allocation from the base station, etc. In other examples, reference signals and control data can be communicated such as to mitigate relay self-interference as well.
摘要翻译： 提供了包括选择用于分配给设备的资源以在还与基站通信时减轻中继自身干扰的方法和装置。 可以基于一个或多个因素来选择资源，例如基于与基站协商的资源，或者基于指示为从基站分配不期望的资源。在其他示例中，参考信号和控制 可以传送数据，以减轻继电器自身干扰。
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公开(公告)号：US09020009B2
公开(公告)日：2015-04-28
申请号：US12609579
申请日：2009-10-30
申请人： Gwendolyn Denise Barriac , Dhananjay Ashok Gore , James Arthur Proctor, Jr. , Michael Mao Wang , Tao Tian
发明人： Gwendolyn Denise Barriac , Dhananjay Ashok Gore , James Arthur Proctor, Jr. , Michael Mao Wang , Tao Tian
CPC分类号： H04B7/15535 , H04B7/15585 , H04L27/2607 , H04L27/2613
摘要： In one embodiment, a device for constructing a pilot signal for use in a wireless repeater where the pilot signal is added to a transmit signal includes one or more pilot generators. Each pilot generator generates a carrier pilot signal associated with a single carrier of the transmit signal and the carrier pilot signals generated by the one or more pilot generators are summed to generate the pilot signal. Each of the one or more pilot generators includes a pilot symbol unit providing multiple data symbols having a predetermined data structure as the carrier pilot signal, a pilot scrambler, a filter, a pilot power determination unit, and a cyclic prefix insertion unit for inserting a cyclic prefix to the carrier pilot signal. In another embodiment, the pilot symbol unit providing multiple data symbols in frequency domain as the carrier pilot signal.
摘要翻译： 在一个实施例中，用于构建在无线中继器中使用的导频信号的装置，其中导频信号被添加到发射信号包括一个或多个导频发生器。 每个导频发生器产生与发送信号的单个载波相关联的载波导频信号，并且由一个或多个导频发生器产生的载波导频信号相加以产生导频信号。 一个或多个导频发生器中的每一个包括导频符号单元，其提供具有作为载波导频信号的预定数据结构的多个数据符号，导频扰频器，滤波器，导频功率确定单元和循环前缀插入单元， 循环前缀到载波导频信号。 在另一个实施例中，导频符号单元在频域中提供多个数据符号作为载波导频信号。
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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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107.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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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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