-
公开(公告)号：US20130070653A1
公开(公告)日：2013-03-21
申请号：US13423497
申请日：2012-03-19
CPC分类号： H04W56/0015 , H04B7/2656
摘要： In a wireless communication device with multiple radio access technologies (RATs), frame timing for one RAT may be aligned with a frame timing of another RAT so as to reduce a number of communication frames of the different RATs that overlap in time with each other. The aligning reduces the number of communication frames that are subject to cancellation due to interference. Alignment may reduce a number of transmit frames of one RAT that overlap with multiple receive frames of another RAT. Alignment may reduce a number of receive frames of one RAT that overlap with multiple transmit frames of another RAT.
摘要翻译： 在具有多个无线电接入技术（RAT）的无线通信设备中，一个RAT的帧定时可以与另一RAT的帧定时对准，以便减少在时间上重叠的不同RAT的通信帧的数量。 对齐减少由于干扰而被取消的通信帧的数量。 对准可以减少与另一RAT的多个接收帧重叠的一个RAT的发送帧的数量。 对准可以减少与另一RAT的多个发送帧重叠的一个RAT的接收帧的数量。
-
公开(公告)号：US08379706B2
公开(公告)日：2013-02-19
申请号：US12510484
申请日：2009-07-28
申请人： Yan Zhou , Jibing Wang
发明人： Yan Zhou , Jibing Wang
IPC分类号： H04B3/46
CPC分类号： H04L25/0248 , H04B7/0413 , H04B17/336 , H04L5/0048 , H04L25/0204 , H04L27/2647
摘要： Techniques for estimating desired signal power and noise power of a signal received over a communications channel. In an aspect, a pilot autocorrelation matrix is derived based on certain assumptions about the time delay profile, Doppler profile, and/or spatial correlation of the channel. The pilot autocorrelation matrix is decomposed into a set of eigenvectors. From the eigenvector decomposition, a set of dominant eigenvectors is selected to estimate the signal power, while a set of non-dominant eigenvectors is selected to estimate the noise power. The techniques may readily be applied to arbitrary pilot patterns and to a wide array of SNR ranges and channel conditions.
摘要翻译： 用于估计通过通信信道接收的信号的期望信号功率和噪声功率的技术。 在一方面，基于关于信道的时间延迟分布，多普勒分布和/或空间相关性的某些假设导出导频自相关矩阵。 导频自相关矩阵被分解为一组特征向量。 从特征向量分解中，选择一组主要特征向量来估计信号功率，同时选择一组非显性特征向量来估计噪声功率。 这些技术可以容易地应用于任意导频模式和宽范围的SNR范围和信道条件。
-
公开(公告)号：US20130016635A1
公开(公告)日：2013-01-17
申请号：US13485610
申请日：2012-05-31
CPC分类号： H04W72/1215 , H04W84/18 , H04W88/06
摘要： To mitigate potential interference between radio access technologies (RATs) on a multi-RAT device, traffic scheduling rules may be implemented so that communications of the individual RATs are timed in a manner that reduces interference. For example, communications of a Bluetooth/WLAN RAT may be scheduled such that initial and responsive communications of the Bluetooth/WLAN RAT occur during sub-frames of an LTE RAT that are less likely to cause cross-RAT interference.
摘要翻译： 为了减轻多RAT设备上的无线电接入技术（RAT）之间的潜在干扰，可以实现业务调度规则，以便以降低干扰的方式对各个RAT的通信进行定时。 例如，可以调度蓝牙/ WLAN RAT的通信，使得蓝牙/ WLAN RAT的初始和响应通信在不太可能导致跨RAT干扰的LTE RAT的子帧期间发生。
-
公开(公告)号：US20120327850A1
公开(公告)日：2012-12-27
申请号：US13433159
申请日：2012-03-28
申请人： Jibing Wang , Joel Benjamin Linsky
发明人： Jibing Wang , Joel Benjamin Linsky
IPC分类号： H04W88/06
CPC分类号： H04W72/1215 , H04W72/1284 , H04W88/06
摘要： In a mobile device capable of wireless communications using multiple radio access technologies (RATs), transmit communications of one RAT may cause interference with receive communications of another RAT. In the case of wireless local area network (WLAN) communications, a CTS-to-Self message may control the timing of WLAN communications such that WLAN receptions do not overlap with transmissions of another RAT, such as a Long Term Evolution (LTE) radio. The CTS-to-Self message timing control may be executed by a mobile device operating as a WLAN access point.
摘要翻译： 在能够使用多种无线电接入技术（RAT）的无线通信的移动设备中，一个RAT的发射通信可能引起对另一RAT的接收通信的干扰。 在无线局域网（WLAN）通信的情况下，CTS到自身消息可以控制WLAN通信的定时，使得WLAN接收不与另一RAT的传输重叠，诸如长期演进（LTE）无线电 。 CTS对自身消息定时控制可以由作为WLAN接入点操作的移动设备来执行。
-
公开(公告)号：US20120314598A1
公开(公告)日：2012-12-13
申请号：US13491931
申请日：2012-06-08
IPC分类号： H04W24/00
CPC分类号： H04W72/1215 , H04W16/14 , H04W28/04 , H04W88/06
摘要： Prior to implementing a coexistence solution for a multi-radio device, a measurement determines whether interference experienced by one radio is caused by another radio on the device. This determination includes comparing measurements of the first radio during times when the other radio is operational and when the other radio is inactive. If the compared performance measurements are within a certain range, a coexistence/interference management solution may be implemented.
摘要翻译： 在实现多无线电设备的共存解决方案之前，测量确定一个无线电经受的干扰是否由设备上的另一个无线电引起。 该确定包括在另一个无线电操作的时间和当另一无线电处于非活动状态时比较第一无线电的测量。 如果比较的性能测量在一定范围内，则可以实现共存/干扰管理解决方案。
-
公开(公告)号：US20120071106A1
公开(公告)日：2012-03-22
申请号：US13232547
申请日：2011-09-14
申请人： Tamer Adel Kadous , Xiaoyin He , Pranav Dayal , Ashok Mantravadi , Jibing Wang
发明人： Tamer Adel Kadous , Xiaoyin He , Pranav Dayal , Ashok Mantravadi , Jibing Wang
IPC分类号： H04B17/00
摘要： In user equipments (UEs) with multiple radios, interference between those radios may be reduced by monitoring radio performance and adjusting aggressor transmit power levels to ensure victim and aggressor performance stay within desired operational levels. Various factors may determine when a reduced power approach is desired. Such factors may include aggressor transmit power, received signal strength indicator, victim error rate, throughput loss, coverage impact, etc. Various methods of reducing transmit power may be used. For example, for Long Term Evolution communications, a power headroom report may be altered to adjust a modulation coding scheme and bandwidth allocated for a particular UE. For Bluetooth communications a power control mechanism may be overridden to ensure a device stays within a desired transmit power. A power reduction loop may be employed to monitor a device's transmit power.
摘要翻译： 在具有多个无线电的用户设备（UE）中，可以通过监视无线电性能并调整攻击者发射功率电平来降低这些无线电之间的干扰，以确保受害者和侵略者的性能保持在期望的操作级别内。 各种因素可能决定何时需要降低功率的方法。 这些因素可能包括攻击者发射功率，接收信号强度指示符，受害者错误率，吞吐量损失，覆盖影响等。可以使用各种降低发射功率的方法。 例如，对于长期演进通信，可以改变功率余量报告以调整为特定UE分配的调制编码方案和带宽。 对于蓝牙通信，可以覆盖功率控制机制以确保设备保持在期望的发射功率内。 可以采用功率降低环路来监视设备的发射功率。
-
37.发明申请公开(公告)号：US20110194637A1
公开(公告)日：2011-08-11
申请号：US13019448
申请日：2011-02-02
申请人： Yibo Jiang , Sharad Deepak Sambhwani , Jilei Hou , Jibing Wang
发明人： Yibo Jiang , Sharad Deepak Sambhwani , Jilei Hou , Jibing Wang
IPC分类号： H04B7/02
CPC分类号： H04B7/0617 , H04B7/0634 , H04W52/146 , H04W52/325
摘要： A method and apparatus for enabling uplink beamforming transmit diversity is provided. The method may include receiving, by a wireless communications device (WCD), a beamforming weight vector in response to transmission by the WCD of two or more pilot channels, applying the received beamforming weight vector to at least one of a first of the two or more pilot channels, one or more data channels, or one or more control channels, and transmitting, using two or more antennas, at least one of the one or more data channels or at least one of the one or more control channels, wherein the number of pilot channels is greater than or equal to the number of antennas.
摘要翻译： 提供了一种用于实现上行链路波束成形发射分集的方法和装置。 该方法可以包括响应于WCD的两个或多个导频信道的传输，由无线通信设备（WCD）接收波束成形加权向量，将接收到的波束成形加权向量应用于两者中的至少一个或 更多导频信道，一个或多个数据信道或一个或多个控制信道，以及使用两个或更多个天线发送所述一个或多个数据信道中的至少一个或所述一个或多个控制信道中的至少一个，其中， 导频信道数大于或等于天线数。
-
公开(公告)号：US20110038445A1
公开(公告)日：2011-02-17
申请号：US12540574
申请日：2009-08-13
申请人： Yan Zhou , Jibing Wang
发明人： Yan Zhou , Jibing Wang
IPC分类号： H04B1/10
CPC分类号： H04L25/0248 , H04L25/0204 , H04L25/022 , H04L25/0228
摘要： Techniques for estimating the response of a communications channel. In an aspect, a channel autocorrelation matrix is derived based on, e.g., certain assumptions about the time delay profile, Doppler profile. An eigenvector decomposition is performed on the autocorrelation matrix, and a set of dominant eigenvectors is determined. A received pilot signal vector is projected onto a projection matrix derived from the dominant eigenvectors to generate a set of eigen-coefficients, which is then used to reconstruct an estimated channel vector. In an exemplary embodiment, the eigenvector-based approach is combined with a simplified minimum mean-square error based approach to generate an estimated channel vector when the received signal-to-noise ratio is below a threshold.
摘要翻译： 用于估计通信信道响应的技术。 在一方面，基于例如关于时间延迟分布，多普勒分布的某些假设，导出信道自相关矩阵。 对自相关矩阵执行特征向量分解，并确定一组主要特征向量。 将接收到的导频信号向量投影到从主要特征向量导出的投影矩阵上，以生成一组本征系数，然后将其用于重建估计的信道向量。 在示例性实施例中，当基于特征向量的方法与基于简化的基于最小均方误差的方法组合时，当接收到的信噪比低于阈值时，生成估计的信道向量。
-
公开(公告)号：US09282462B2
公开(公告)日：2016-03-08
申请号：US13004006
申请日：2011-01-10
申请人： Pranav Dayal , Tamer A. Kadous , Ashok Mantravadi , Jibing Wang , Rajat Prakash
发明人： Pranav Dayal , Tamer A. Kadous , Ashok Mantravadi , Jibing Wang , Rajat Prakash
摘要： A method of wireless communication includes receiving signaling from a served User Equipment (UE), via a radio access technology, indicating an interfering technology associated with coexistence issues experienced by the served UE. The method also includes calculating future subframes expected to experience coexistence issues based on previous subframes estimated to have experienced coexistence issues.
摘要翻译： 无线通信的方法包括经由无线电接入技术从所服务的用户设备（UE）接收指示与所服务的UE所经历的共存问题相关联的干扰技术的信令。 该方法还包括根据估计经历共存问题的先前子帧计算预期将遇到共存问题的未来子帧。
-
公开(公告)号：US08908656B2
公开(公告)日：2014-12-09
申请号：US13346490
申请日：2012-01-09
申请人： Ahmed K. Sadek , Ashok Mantravadi , Jibing Wang
发明人： Ahmed K. Sadek , Ashok Mantravadi , Jibing Wang
CPC分类号： H04W72/1215 , H04W24/10 , H04W52/243 , H04W88/06
摘要： In a user equipment (UE) with multiple radio access technologies (RATs), communications of one RAT engaged in connection setup may be protected from communications of other RATs. Techniques for protecting such connection setups include performing power backoff on a potentially interfering RAT or implementing a time division multiplexing (TDM) solution alternating when certain RATs are active.
摘要翻译： 在具有多个无线电接入技术（RAT）的用户设备（UE）中，可以保护参与连接建立的一个RAT的通信免受其他RAT的通信。 用于保护这种连接设置的技术包括在某些RAT有效时，在潜在的干扰RAT上执行功率回退或实施交替的时分复用（TDM）解决方案。
-
-
-
-
-
-
-
-
-
搜索结果
74 条记录 (耗时 0.032 秒)
