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1. 发明授权

US08750358B2 Method for improving multiuser MIMO downlink transmissions 有权
标题翻译：用于改善多用户MIMO下行链路传输的方法
公开(公告)号：US08750358B2
公开(公告)日：2014-06-10
申请号：US13441231
申请日：2012-04-06
申请人： Guosen Yue , Narayan Prasad , Meilong Jiang , Mohammad A. Khojastepour , Sampath Rangarajan
发明人： Guosen Yue , Narayan Prasad , Meilong Jiang , Mohammad A. Khojastepour , Sampath Rangarajan
IPC分类号： H04B17/00
CPC分类号： H04B7/0452 , H04B7/0417 , H04B7/0469 , H04B7/0626 , H04B7/063 , H04B7/0639 , H04L1/0013 , H04L1/0015 , H04L1/0021 , H04L1/0035 , H04L25/03949 , H04L2025/03808
摘要： A method for improving multiple-input multiple-output MIMO downlink transmissions includes obtaining a channel state information CSI report including preferred matrix index PMI for precoding, channel quality index CQI and rank index RI at a base station from user terminals through a channel feedback; applying selectively a signal-to-interference-plus-noise-ratio SINR offset to a SINR of said CSI report; applying selectively a rate matching responsive to SINR offset or the CSI report; and controlling or adjusting the SINR offset.
摘要翻译：一种用于改善多输入多输出MIMO下行链路传输的方法包括从用户终端通过信道反馈获得包括用于预编码的优选矩阵索引PMI，信道质量指数CQI和基站处的秩索引RI的信道状态信息CSI报告; 选择性地对所述CSI报告的SINR应用信号与干扰加噪声比SINR偏移量; 选择性地应用响应于SINR偏移量或CSI报告的速率匹配; 并控制或调整SINR偏置。

2. 发明授权

US08705392B2 MU-MIMO-OFDMA multi-rank CQI and precoder signaling schemes 有权
标题翻译： MU-MIMO-OFDMA多级CQI和预编码器信令方案
公开(公告)号：US08705392B2
公开(公告)日：2014-04-22
申请号：US13080416
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. The method further includes determining one or more signal quality measures for the at least one sub-band based on 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 accordance with at least one of single-user scheduling rules or multi-user scheduling rules. In addition, the method includes transmitting to the base station an indication of the one or more signal quality measures and at least one tag identifying each signal quality measure as being determined in accordance with the single-user scheduling rules or the multi-user scheduling rules.
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。所述方法还包括基于由所述基站在所述至少一个子带上调度的流的总数的估计或所述上限来确定所述至少一个子带的一个或多个信号质量度量根据单用户调度规则或多用户调度规则中的至少一个。此外，该方法包括向基站发送一个或多个信号质量测量的指示，以及标识每个信号质量测量的至少一个标签，根据单用户调度规则或多用户调度规则确定。

3. 发明申请

US20120082259A1 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：US20120082259A1
公开(公告)日：2012-04-05
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： H04L25/03 , H04B15/00
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。

4. 发明授权

US08891677B2 Power scaling for retransmissions in uplink MIMO hybrid ARQ 有权
标题翻译：上行链路MIMO混合ARQ中的重传功率缩放
公开(公告)号：US08891677B2
公开(公告)日：2014-11-18
申请号：US13292659
申请日：2011-11-09
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 , H04L25/03 , H04L5/00 , H04W52/48 , H04L1/18 , H04L1/00
CPC分类号： H04L5/0055 , H04L1/0003 , H04L1/0009 , H04L1/1819 , H04L1/1867 , H04L25/03923 , H04W52/48
摘要： A method includes obtaining a precoder for retransmission of one codeword responsive to known precoding matrix P of rank r and modulation and coding scheme MCS assignments used in an original transmission, and a desired retransmission rank r′; and scaling power in the retransmission responsive to at least two of 1) information parameters Index of UL precoder in previous transmission, 2) rank r of uplink UL precoder in previous transmission, 3) MCS assignments in previous retransmission (MCSi), 4) rank r′ for UL retransmission 5) number of retransmit antennas used for codeword to be retransmitted x in previous transmission, 6) number of retransmit antennas x′ used for retransmission, 7) precoder for UL retransmission, 8) UL precoders and channel information for previous transmission, and 8) latest channel measurements.
摘要翻译：一种方法包括响应于已知的秩r的预编码矩阵P以及在原始传输中使用的调制和编码方案MCS分配以及期望的重传等级r'，获得用于重传一个码字的预编码器。并且响应于以前的传输中的UL预编码器的信息参数索引中的至少两个，2）先前传输中的上行链路UL预编码器的秩r，先前传输中的MCS分配（MCSi），4）等级 r'用于UL重传5）用于先前传输中的要重发的码字的重传天线数x 6用于重传的重传天线数x'7）用于UL重传的预编码器8）UL预编码器和用于前一个传输的信道信息传输，以及8）最新的频道测量。

5. 发明授权

US08798011B2 Enhancement of download multi-user multiple-input multiple-output wireless communications 有权
标题翻译：增强下载多用户多输入多输出无线通信
公开(公告)号：US08798011B2
公开(公告)日：2014-08-05
申请号：US13456881
申请日：2012-04-26
申请人： Narayan Prasad , Guosen Yue , Meilong Jiang , Mohammad A. Khojastepour , Sampath Rangarajan
发明人： Narayan Prasad , Guosen Yue , Meilong Jiang , Mohammad A. Khojastepour , Sampath Rangarajan
IPC分类号： H04B7/216
CPC分类号： H04W24/10 , H04B7/0417 , H04B7/0452 , H04B7/0469 , H04B7/0486 , H04B7/0626 , H04B7/063 , H04B7/065
摘要： A method implemented in a user equipment configured to be used in a multi-user (MU) multiple-input multiple-output (MIMO) wireless communications system is disclosed. In an aspect, the user equipment transmits to a base station a first channel state information (CSI) report determined according to a single-user (SU) MIMO rule and a second CSI report determined according to an MU-MIMO rule.
摘要翻译：公开了一种在配置成在多用户（MU）多输入多输出（MIMO）无线通信系统中使用的用户设备中实现的方法。一方面，用户设备向基站发送根据单用户（SU）MIMO规则确定的第一信道状态信息（CSI）报告和根据MU-MIMO规则确定的第二CSI报告。

6. 发明授权

US08503554B2 Selective joint demodulation 有权
标题翻译：选择性联合解调
公开(公告)号：US08503554B2
公开(公告)日：2013-08-06
申请号：US13088955
申请日：2011-04-18
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： H04L27/28
CPC分类号： H04B7/0452 , H04J11/0046 , H04L5/0023 , H04L25/03331 , H04L27/0008 , H04L27/0012 , H04L27/34 , H04W72/042 , H04W72/12
摘要： Systems, methods and apparatuses for jointly demodulating data signals are disclosed. In accordance with the method, pilot signals are received from a base station and are processed. In addition, from a set of expected co-scheduled data streams, a subset of the co-scheduled data streams that are actually transmitted by the base station are determined based on the pilot signals. Further, a group of the transmitted co-scheduled data streams are selected from the determined subset. The data signals are received and jointly demodulated by employing the selected group of co-scheduled data streams and by suppressing non-selected data streams from the determined subset.
摘要翻译：公开了用于联合解调数据信号的系统，方法和装置。根据该方法，从基站接收导频信号并进行处理。另外，从一组期望的共同调度数据流中，基于导频信号确定由基站实际发送的协同调度数据流的子集。此外，从确定的子集中选择一组发送的协调调度数据流。通过采用所选择的协同调度数据流组并通过从所确定的子集抑制未选择的数据流来接收和联合地解调数据信号。

7. 发明申请

US20120257664A1 Method for Improving Multiuser MIMO Downlink Transmissions 有权
标题翻译：改进多用户MIMO下行链路传输的方法
公开(公告)号：US20120257664A1
公开(公告)日：2012-10-11
申请号：US13441231
申请日：2012-04-06
申请人： Guosen Yue , Narayan Prasad , Meilong Jiang , Mohammad A. Khojastepour , Sampath Rangarajan
发明人： Guosen Yue , Narayan Prasad , Meilong Jiang , Mohammad A. Khojastepour , Sampath Rangarajan
IPC分类号： H04B7/02 , H04B15/00
CPC分类号： H04B7/0452 , H04B7/0417 , H04B7/0469 , H04B7/0626 , H04B7/063 , H04B7/0639 , H04L1/0013 , H04L1/0015 , H04L1/0021 , H04L1/0035 , H04L25/03949 , H04L2025/03808
摘要： A method for improving multiple-input multiple-output MIMO downlink transmissions includes obtaining a channel state information CSI report including preferred matrix index PMI for precoding, channel quality index CQI and rank index RI at a base station from user terminals through a channel feedback; applying selectively a signal-to-interference-plus-noise-ratio SINR offset to a SINR of said CSI report; applying selectively a rate matching responsive to SINR offset or the CSI report; and controlling or adjusting the SINR offset.
摘要翻译：一种用于改善多输入多输出MIMO下行链路传输的方法包括从用户终端通过信道反馈获得包括用于预编码的优选矩阵索引PMI，信道质量指数CQI和基站处的秩索引RI的信道状态信息CSI报告; 选择性地对所述CSI报告的SINR应用信号与干扰加噪声比SINR偏移量; 选择性地应用响应于SINR偏移量或CSI报告的速率匹配; 并控制或调整SINR偏置。

8. 发明授权

US08724573B2 Resource allocation in 4G MIMO cellular uplinks 有权
标题翻译： 4G MIMO蜂窝上行链路中的资源分配
公开(公告)号：US08724573B2
公开(公告)日：2014-05-13
申请号：US13343398
申请日：2012-01-04
申请人： Narayan Prasad , Honghai Zhang , Meilong Jiang , Guosen Yue , Sampath Rangarajan
发明人： Narayan Prasad , Honghai Zhang , Meilong Jiang , Guosen Yue , Sampath Rangarajan
IPC分类号： H04W72/04 , H04W72/06
CPC分类号： H04W72/04 , H04B7/0404 , H04W72/042 , H04W72/06 , H04W72/1257
摘要： A method of uplink resource allocation is disclosed. The method includes computing a set of utilities for each of a finite set of transmission modes with a processor across a plurality of user devices, each having multiple transmit antennas, and iteratively allocating uplink resource blocks (RBs) and transmission modes to the plurality of user devices until all users have been allocated or no allocation is found, by selecting a mode that has a highest incremental utility sum for each user across one or more RBs, determining which user has the highest incremental utility sum, allocating the mode and RBs associated with the highest incremental utility sum to the user, and removing the allocated user from consideration. Other apparatuses, systems, and methods also are disclosed.
摘要翻译：公开了一种上行链路资源分配的方法。该方法包括：通过跨多个用户设备的处理器计算一组有用传输模式的实用程序，每个用户设备具有多个发射天线，并向多个用户迭代地分配上行链路资源块（RB）和传输模式设备，直到所有用户已经被分配或没有找到分配，通过选择对于每个用户跨越一个或多个RB具有最高增量效用总和的模式，确定哪个用户具有最高的增量效用总和，分配与对用户的最大增量效用总和，并从分配中删除分配的用户。还公开了其他装置，系统和方法。

9. 发明授权

US08654663B2 MU-MIMO-OFDMA systems and methods for multi-rank CQI computation and precoder selection 有权
标题翻译： MU-MIMO-OFDMA系统和用于多级CQI计算和预编码器选择的方法
公开(公告)号：US08654663B2
公开(公告)日：2014-02-18
申请号：US13080374
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： H04L12/28 , H04W4/00 , H04L12/56
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 comprises 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. In addition, the method further comprises determining one or more signal quality measures for the at-least one sub-band based on 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. Moreover, an indication of the one or more signal quality measures is transmitted to the base station.
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，在基站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。另外，该方法还包括基于至少一个子带上基站的调度的流的总数的估计或上限确定至少一个子带的一个或多个信号质量度量一个子带。此外，向基站发送一个或多个信号质量测量的指示。

10. 发明申请

US20120275314A1 Enhancement of Download Multi-User Multiple-Input Multiple-Output Wireless Communications 有权
标题翻译：下载多用户多输入多输出无线通信的增强
公开(公告)号：US20120275314A1
公开(公告)日：2012-11-01
申请号：US13456881
申请日：2012-04-26
申请人： Narayan Prasad , Guosen Yue , Meilong Jiang , Mohammad A. Khojastepour , Sampath Rangarajan
发明人： Narayan Prasad , Guosen Yue , Meilong Jiang , Mohammad A. Khojastepour , Sampath Rangarajan
IPC分类号： H04W24/10
CPC分类号： H04W24/10 , H04B7/0417 , H04B7/0452 , H04B7/0469 , H04B7/0486 , H04B7/0626 , H04B7/063 , H04B7/065
摘要： A method implemented in a user equipment configured to be used in a multi-user (MU) multiple-input multiple-output (MIMO) wireless communications system is disclosed. In an aspect, the user equipment transmits to a base station a first channel state information (CSI) report determined according to a single-user (SU) MIMO rule and a second CSI report determined according to an MU-MIMO rule.
摘要翻译：公开了一种在配置成在多用户（MU）多输入多输出（MIMO）无线通信系统中使用的用户设备中实现的方法。一方面，用户设备向基站发送根据单用户（SU）MIMO规则确定的第一信道状态信息（CSI）报告和根据MU-MIMO规则确定的第二CSI报告。

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