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121. 发明申请

US20070072611A1 Information for media independent handover 审中-公开
标题翻译：媒体独立切换信息
公开(公告)号：US20070072611A1
公开(公告)日：2007-03-29
申请号：US11237722
申请日：2005-09-29
申请人： Peretz Feder , Ajay Rajkumar , Sampath Rangarajan , Yousif Targali
发明人： Peretz Feder , Ajay Rajkumar , Sampath Rangarajan , Yousif Targali
IPC分类号： H04Q7/20
CPC分类号： H04W36/005 , H04W36/30
摘要： At least data link information generated at a medium access control layer or physical link information generated at a physical layer is used to send information to a media independent handover layer.
摘要翻译：至少在介质访问控制层产生的数据链路信息或在物理层产生的物理链路信息被用于向媒体独立的切换层发送信息。

122. 发明授权

US07187648B1 Redundancy in packet routing devices 失效
标题翻译：分组路由设备的冗余
公开(公告)号：US07187648B1
公开(公告)日：2007-03-06
申请号：US10299365
申请日：2002-11-18
申请人： Sampath Rangarajan , Ram Ayyakad , Raghuram A. Devarakonda , Alexander Pavlovsky , Alexander Sarin
发明人： Sampath Rangarajan , Ram Ayyakad , Raghuram A. Devarakonda , Alexander Pavlovsky , Alexander Sarin
IPC分类号： H04J1/16 , H04J3/14
CPC分类号： H04L45/00 , H04L45/586 , H04L45/60 , H04L49/557
摘要： An arrangement where a primary traffic management device includes ports that are connected to a network, and a backup device that is connected to the primary device and also to the network provides effective backup support. When a port of the primary become non-operational, a port of the backup device is enlisted to serve the function of the non-operational port, leaving the remaining port of the primary, as well as all of the processors to continue operating normally, employing whatever data has been accumulated in the primary. The enlisting is accomplished through a Layer 2 switch within the primary device and a Layer 2 switch within the secondary device.
摘要翻译：主要业务管理设备包括连接到网络的端口和连接到主设备以及网络的备份设备提供有效的备份支持的布置。当主端口不可操作时，备份设备的端口被登记为服务于非操作端口的功能，使主设备的剩余端口以及所有处理器继续正常运行，采用任何数据已经积累在小学。通过主设备中的第2层交换机和辅助设备内的第2层交换机来实现。

123. 发明授权

US08717922B2 Multitaper spectrum sensing systems and methods 有权
标题翻译：多频谱传感系统和方法
公开(公告)号：US08717922B2
公开(公告)日：2014-05-06
申请号：US13284442
申请日：2011-10-28
申请人： Yan Xin , Kyungtae Kim , Sampath Rangarajan
发明人： Yan Xin , Kyungtae Kim , Sampath Rangarajan
IPC分类号： H04L12/26
CPC分类号： H04W16/14 , H04L27/0006
摘要： Spectrum sensing methods and systems for detecting spectrum holes for use in cognitive radio secondary transmissions are disclosed. In one method, an indication of an assignment of a set of subcarriers to a primary user is received. The method further includes determining multitaper spectral estimates for at least a subset of the set of subcarriers based on the assignment of the set of subcarriers to the primary user by processing samples for the at least a subset of the set of subcarriers. In addition, a test statistic that is based on the multitaper spectral estimates is compared to a threshold to determine whether the set of subcarriers is utilized for primary transmissions to the primary user. Moreover, data signals are received on at least one of the subcarriers in the set of subcarriers if the set of subcarriers is not utilized for primary transmissions to the primary user.
摘要翻译：公开了用于在认知无线电二次传输中使用的用于检测频谱孔的频谱感测方法和系统。在一种方法中，接收向主用户分配一组子载波的指示。该方法还包括：通过处理子载波组的至少一个子集的样本，基于通过向主用户的子载波集合的分配来确定子载波组的至少子集的多频谱估计。此外，将基于多频谱估计的测试统计量与阈值进行比较，以确定该副载波集合是否用于主用户的主要传输。此外，如果子载波的集合不用于主要用户的主要传输，则在子载波组中的至少一个子载波上接收数据信号。

124. 发明授权

US08699621B2 Precoding selection for retransmission in uplink MIMO hybrid ARQ 有权
标题翻译：上行MIMO混合ARQ中重传的预编码选择
公开(公告)号：US08699621B2
公开(公告)日：2014-04-15
申请号：US13252650
申请日：2011-10-04
申请人： Guosen Yue , Narayan Prasad , Meilong Jiang , Sampath Rangarajan
发明人： Guosen Yue , Narayan Prasad , Meilong Jiang , Sampath Rangarajan
IPC分类号： H04L27/00
CPC分类号： H04B7/0456 , H04L1/0618 , H04L1/1896 , H04L25/03343 , H04L2025/03426
摘要： A method includes obtaining a precoder for retransmission of one codeword responsive to a known precoding matrix of a certain rank and modulation and coding scheme assignments used in an original transmission, and a desired retransmission rank', forming an approximate channel covariance matrix; stimating an a minimum mean square error receiver signal-to-noise-interference-ratio for each layer to be retransmitted responsive to the prior forming; and finding a precoding matrix from a preceding codebook that maximizes a sum-rate for enabling precoding selections for retransmissions in uplink multiple-input multiple-output MIMO hybrid automatic repeat request HARQ.
摘要翻译：一种方法包括响应于某一秩的已知预编码矩阵和在原始传输中使用的调制和编码方案分配以及形成近似信道协方差矩阵的期望重传等级来获得用于重传一个码字的预编码器; 响应于先前的形成，针对要重传的每个层激发最小均方误差接收机的信噪比干扰比; 以及从上一个码本中找到一个预编码矩阵，该预编码矩阵使上行链路多输入多输出MIMO混合自动重复请求HARQ中的重传的预编码选择最大化。

125. 发明授权

US08687527B2 Low complexity link adaptatation for LTE/LTE-A uplink with a turbo receiver 有权
标题翻译：具有turbo接收机的LTE / LTE-A上行链路的低复杂度链路适配
公开(公告)号：US08687527B2
公开(公告)日：2014-04-01
申请号：US13234885
申请日：2011-09-16
申请人： Meilong Jiang , Narayan Prasad , Guosen Yue , Sampath Rangarajan
发明人： Meilong Jiang , Narayan Prasad , Guosen Yue , Sampath Rangarajan
IPC分类号： H04B7/005 , H04B1/00
CPC分类号： H04B7/0417 , H04B7/0404 , H04B7/0486 , H04B7/0626 , H04B7/063 , H04B7/0639 , H04J11/0033 , H04L1/0031 , H04L5/0023
摘要： An inventive method for link adaptation for an LTE/LTE-A uplink with a turbo SIC receiver includes the steps of determining a precoding matrix index PMI and rank index RI selection for an LTE/LTE-A uplink when precoding of the uplink is enabled, responsive to channel state information of a subcarrier in the uplink; determining a decoding order for codewords in the uplink i) when the precoding of the uplink is not enabled and ii) if needed when the precoding of the uplink is enabled; performing modulation and coding scheme MCS assignment for the uplink based on a hard decision successive interference cancellation SIC rule (without intra-CW cancellation) or a partial hard decision successive interference cancellation SIC rule (with intra-CW cancellation), responsive to the determined PMI and RI selection; and influencing data transmission in the uplink responsive to the MCS assignment for detection by a turbo SIC receiver.
摘要翻译：用于具有turbo SIC接收机的LTE / LTE-A上行链路的链路适配的创新方法包括以下步骤：当启用上行链路的预编码时，确定LTE / LTE-A上行链路的预编码矩阵索引PMI和秩索引RI选择，响应于所述上行链路中的子载波的信道状态信息; 确定所述上行链路中的码字的解码顺序i）当所述上行链路的预编码不被使能时，以及ii）如果在启用所述上行链路的预编码时需要; 基于硬判决连续干扰消除SIC规则（无内部CW消除）或部分硬判决连续干扰消除SIC规则（具有CW内取消），执行针对上行链路的调制和编码方案MCS分配，响应于所确定的PMI 和RI选择; 并且响应于用于由turbo SIC接收机检测的MCS分配，影响上行链路中的数据传输。

126. 发明授权

US08644180B2 MU-MIMO-OFDMA methods and systems for signaling multi-rank CQIs and precoders 有权
标题翻译： MU-MIMO-OFDMA方法和用于信令多级CQI和预编码器的系统
公开(公告)号：US08644180B2
公开(公告)日：2014-02-04
申请号：US13080403
申请日：2011-04-05
申请人： Narayan Prasad , Guosen Yue , Mohammad A. Khojastepour , Meilong Jiang , Sampath Rangarajan
发明人： Narayan Prasad , Guosen Yue , Mohammad A. Khojastepour , Meilong Jiang , Sampath Rangarajan
IPC分类号： H04L12/26 , H04W4/00 , H04B7/02
CPC分类号： H04W24/08 , H04B7/0452 , H04B7/0465 , H04B7/0486 , H04W52/346 , H04W72/0406 , H04W72/085
摘要： Methods and systems for determining attributes of communication channels of MU-MIMO users in an OFDMA system are disclosed. One method includes receiving from a base station, for at least one sub-band of contiguous sub-carriers, an indication of an estimate of or an upper-bound on a total number of streams that are co-scheduled by the base station on the at least one sub-band and an indication of a fraction of a transmit power at the base station that is applied to streams that are scheduled for transmission to a particular user. The method further includes determining one or more signal quality measures for the at least one sub-band based on at least one of the fraction or the estimate of or the upper-bound on the total number of streams that are scheduled by the base station on the at least one sub-band. In addition, an indication of the one or more signal quality measures is transmitted to the base station in the method.
摘要翻译：公开了一种用于确定OFDMA系统中MU-MIMO用户的通信信道属性的方法和系统。一种方法包括从基站接收对于连续子载波的至少一个子带，对由基站在...上共同调度的流的总数的估计或上限的指示至少一个子带和基站处的发送功率的一小部分的指示，其被应用于被调度用于传输到特定用户的流。该方法还包括基于由基站对其进行调度的流的总数的分数或估计或上限中的至少一个来确定至少一个子带的一个或多个信号质量度量该至少一个子带。此外，在该方法中向基站发送一个或多个信号质量测量的指示。

127. 发明授权

US08599951B2 Feed-forward control signaling and decoding schemes 有权
公开(公告)号：US08599951B2
公开(公告)日：2013-12-03
申请号：US13115162
申请日：2011-05-25
申请人： Mohammad A. Khojastepour , Narayan Prasad , Sampath Rangarajan
发明人： Mohammad A. Khojastepour , Narayan Prasad , Sampath Rangarajan
IPC分类号： H04B7/02 , H04L1/02
摘要： Systems and methods for conveying wireless transmission allocation information are disclosed. In accordance with one method, an index indicating selected data stream parameters is received. In addition, an indication of a number of transmit antennas at a transmitter from which the data stream is transmitted is also received. Further, the selected parameters are determined from the index based on the number of transmit antennas at the transmitter. Moreover, data signals are received and processed with a processor in accordance with the selected data stream parameters.

128. 发明授权

US08588750B2 Method and apparatus for providing interactive services to users using unicast and broadcast wireless networks 有权
标题翻译：用于使用单播和广播无线网络向用户提供交互式服务的方法和装置
公开(公告)号：US08588750B2
公开(公告)日：2013-11-19
申请号：US11694977
申请日：2007-03-31
申请人： Randeep S. Bhatia , Girija J. Narlikar , Sampath Rangarajan
发明人： Randeep S. Bhatia , Girija J. Narlikar , Sampath Rangarajan
IPC分类号： H04M3/42
CPC分类号： H04L12/1859 , H04L12/189
摘要： The invention includes a method and apparatus for providing interactive services using unicast wireless networks and broadcast wireless networks. A method includes receiving content interaction information indicative of interactions by a user with content presented at a wireless user terminal, obtaining at least one service parameter, and providing a service using the content interaction information and the at least one service parameter, wherein the service is provided using one of the unicast wireless network or the broadcast wireless network. The content for which content interaction information is received is provided to the wireless user terminal using a broadcast wireless network and the content interaction information is received over a unicast wireless network. The service that is provided may include providing modified content over the broadcast wireless network, providing personalized content over the unicast wireless network, operating a proxy for a network-based service, and the like.
摘要翻译：本发明包括一种使用单播无线网络和广播无线网络提供交互式服务的方法和装置。一种方法包括接收表示用户与无线用户终端呈现的内容的交互的内容交互信息，获得至少一个服务参数，以及使用所述内容交互信息和所述至少一个服务参数提供服务，其中，所述服务是使用单播无线网络或广播无线网络之一提供。使用广播无线网络向无线用户终端提供接收到内容交互信息的内容，并且通过单播无线网络接收内容交互信息。提供的服务可以包括通过广播无线网络提供经修改的内容，通过单播无线网络提供个性化内容，为基于网络的服务操作代理等。

129. 发明授权

US08537737B2 Scalable video multicast with non-overlapping beamforming antennas 有权
标题翻译：具有非重叠波束成形天线的可扩展视频多播
公开(公告)号：US08537737B2
公开(公告)日：2013-09-17
申请号：US13046258
申请日：2011-03-11
申请人： Honghai Zhang , Yuanxi Jiang , Sampath Rangarajan
发明人： Honghai Zhang , Yuanxi Jiang , Sampath Rangarajan
IPC分类号： H04H20/71 , H04W4/00 , H04J3/26 , H01Q3/00 , H04M1/00
CPC分类号： H04B7/0408 , H04B7/0617
摘要： A method includes initializing transmission of multicast data with non-overlapping beamforming antennas by a wireless access point responsive to multiple clients; determining a beam pattern for transmission of the data by the access point responsive to feedback on a signal-to-noise-ratio SNR of each client under every beam pattern; and scheduling a multicast of the data to the clients responsive to the determining and to one of an optimal beam streaming configuration and a sub-optimal beam streaming configuration for partitioning the beam patterns into groups for creating composite beam patterns associated with assigned modulation coding and video streams.
摘要翻译：一种方法包括：响应于多个客户端，通过无线接入点初始化具有非重叠波束形成天线的多播数据的传输; 响应于在每个波束图案下对每个客户端的信噪比SNR的反馈，确定由接入点传输数据的波束图案; 以及响应于所述确定而将数据的多播调度到所述客户机，以及将最佳波束流配置和次优流波束流配置中的一个调整到用于将所述波束图案划分成组以用于创建与所分配的调制编码和视频相关联的合成波束图案流。

130. 发明授权

US08494459B2 Wideband codebook construction and applications 有权
标题翻译：宽带码本的构建与应用
公开(公告)号：US08494459B2
公开(公告)日：2013-07-23
申请号：US13213510
申请日：2011-08-19
申请人： Narayan Prasad , Mohammad Amir Khojastepour , Sampath Rangarajan
发明人： Narayan Prasad , Mohammad Amir Khojastepour , Sampath Rangarajan
IPC分类号： H04B7/02 , H04L27/28
CPC分类号： H04B7/0417 , H04B7/0469 , H04B7/0486 , H04B7/0632 , H04B7/0639 , H04B7/0669
摘要： A precoding scheme in which the downlink channel is estimated and an optimal precoding matrix to be used by the multi antenna transmitter is determined accordingly. The optimal precoding matrix is selected from a codebook of matrices that includes matrices having a structure matched to that of the eigenvectors of the spatial covariance matrix, wherein the spatial covariance matrix is modeled as a Hermitian and Toeplitz matrix parameterized by a single complex-valued scalar.
摘要翻译：相应地确定其中估计下行链路信道并由多天线发射机使用的最佳预编码矩阵的预编码方案。从包括具有与空间协方差矩阵的特征向量的结构匹配的矩阵的矩阵的码本中选择最佳预编码矩阵，其中空间协方差矩阵被建模为由单个复值标量参数化的Hermitian和Toeplitz矩阵。

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