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31. 发明授权

US09137802B2 DL MU-MIMO operation in LTE-A 有权
标题翻译： LTE-A中的DL MU-MIMO操作
公开(公告)号：US09137802B2
公开(公告)日：2015-09-15
申请号：US12857112
申请日：2010-08-16
申请人： Stefan Geirhofer , Amir Farajidana , Tingfang Ji , Alexei Yurievitch Gorokhov , Anastasios Stamoulis
发明人： Stefan Geirhofer , Amir Farajidana , Tingfang Ji , Alexei Yurievitch Gorokhov , Anastasios Stamoulis
IPC分类号： H04W4/00 , H04W72/04 , H04W72/08
CPC分类号： H04W72/048 , H04W72/0413 , H04W72/085
摘要： Techniques for scheduling UEs are described. In one design, a scheduler (e.g., for a cell) may receive channel direction information (CDI) and channel strength information (CSI) from a plurality of UEs. In one design, the CDI from each UE may include at least one eigenvector, and the CSI from each UE may include at least one singular value corresponding to the at least one eigenvector. The scheduler may schedule at least one UE among the plurality of UEs for data transmission based on the CDI and CSI from the plurality of UEs. The scheduler may select the at least one UE based on a metric related to signal-to-leakage ratio (SLR), or spectral efficiency, etc. In one design, the scheduler may evaluate the performance of different sets of UEs to determine whether to schedule one UE for single-user MIMO or multiple UEs for multi-user MIMO.
摘要翻译：描述用于调度UE的技术。在一种设计中，调度器（例如，用于小区）可以从多个UE接收信道方向信息（CDI）和信道强度信息（CSI）。在一种设计中，来自每个UE的CDI可以包括至少一个特征向量，并且来自每个UE的CSI可以包括对应于该至少一个特征向量的至少一个奇异值。调度器可以基于来自多个UE的CDI和CSI来调度多个UE中的至少一个UE进行数据传输。调度器可以基于与信号泄漏比（SLR）或频谱效率等相关的度量来选择至少一个UE。在一个设计中，调度器可以评估不同组的UE的性能，以确定是否调度一个UE用于单用户MIMO或多个UE用于多用户MIMO。

32. 发明授权

US08983389B2 Method and apparatus for switching between single user detection and multi user detection 有权
标题翻译：用于单用户检测和多用户检测之间切换的方法和装置
公开(公告)号：US08983389B2
公开(公告)日：2015-03-17
申请号：US13009174
申请日：2011-01-19
申请人： Kapil Bhattad , Peter Gaal , Alexei Yurievitch Gorokhov , Juan Montojo , Naga Bhushan
发明人： Kapil Bhattad , Peter Gaal , Alexei Yurievitch Gorokhov , Juan Montojo , Naga Bhushan
IPC分类号： H04B1/00 , H04B7/04 , H04B7/06 , H04B7/08
CPC分类号： H04B7/0452 , H04B7/0689 , H04B7/0871
摘要： Certain aspects of the present disclosure propose methods and apparatuses for detecting whether a user device is scheduled for a single user (SU) multiple-input multiple-output (MIMO) communication mode or for a multi-user (MU) MIMO communication mode. In an aspect, a method for wireless communications is provided which includes measuring, at a first apparatus based on received pilot signals, a first receive power corresponding to a first channel associated with the first apparatus, measuring, based on the received pilot signals, a second receive power corresponding to a second channel associated with at least one potentially present second apparatus, measuring a residual interference based on the received pilot signals, and determining, based on at least one of the first receive power, the second receive power and the residual interference, whether to apply a MU detection or a SU detection for estimating data received at the first apparatus.
摘要翻译：本公开的某些方面提出了用于检测是否为单用户（SU）多输入多输出（MIMO）通信模式或多用户（MU）MIMO通信模式）调度用户设备的方法和装置。一方面，提供了一种用于无线通信的方法，其包括在第一装置基于接收到的导频信号测量与第一装置相关联的第一信道对应的第一接收功率，基于接收到的导频信号，对应于与至少一个潜在存在的第二装置相关联的第二信道的第二接收功率，基于接收到的导频信号测量残余干扰，以及基于所述第一接收功率，所述第二接收功率和所述残差中的至少一个来确定干扰，是否应用MU检测或SU检测来估计在第一装置处接收到的数据。

33. 发明授权

US08948097B2 UE-RS sequence initialization for wireless communication systems 有权
标题翻译：无线通信系统的UE-RS序列初始化
公开(公告)号：US08948097B2
公开(公告)日：2015-02-03
申请号：US12890182
申请日：2010-09-24
申请人： Wanshi Chen , Juan Montojo , Tao Luo , Alexei Yurievitch Gorokhov , Aamod Dinkar Khandekar , Naga Bhushan , Amir Farajidana
发明人： Wanshi Chen , Juan Montojo , Tao Luo , Alexei Yurievitch Gorokhov , Aamod Dinkar Khandekar , Naga Bhushan , Amir Farajidana
IPC分类号： H04W4/00 , H04L5/00 , H04J11/00 , H04J13/16 , H04J13/10 , H04L27/26
CPC分类号： H04J11/003 , H04J11/005 , H04J13/10 , H04J13/16 , H04L5/0023 , H04L5/0051 , H04L27/2613
摘要： Pseudo-random sequences of a plurality of user equipment specific reference signals (UE-RSs) for use by a plurality of user equipments (UEs) are initialized, the initialization of each pseudo-random sequence associated with each UE-RS being independent of a specific UE identifier and independent of a resource bandwidth assigned to a specific UE. Pseudo-random sequences of the UE-RSs are generated. At least one of the pseudo-random sequences is mapped to a portion of common resources for at least one UE among the plurality of UEs.
摘要翻译：用于多个用户设备（UE）使用的多个用户设备特定参考信号（UE-RS）的伪随机序列被初始化，与每个UE-RS相关联的每个伪随机序列的初始化独立于特定UE标识符，并且独立于分配给特定UE的资源带宽。生成UE-RS的伪随机序列。至少一个伪随机序列被映射到多个UE中的至少一个UE的公共资源的一部分。

34. 发明授权

US08885541B2 Extension of UE-RS to DWPTS 有权
标题翻译：将UE-RS扩展到DWPTS
公开(公告)号：US08885541B2
公开(公告)日：2014-11-11
申请号：US12848969
申请日：2010-08-02
申请人： Alexei Yurievitch Gorokhov , Juan Montojo , Amir Farajidana , Kapil Bhattad , Brian Clarke Banister
发明人： Alexei Yurievitch Gorokhov , Juan Montojo , Amir Farajidana , Kapil Bhattad , Brian Clarke Banister
IPC分类号： H04J1/10 , H04L5/00
CPC分类号： H04L5/0051 , H04L5/0007 , H04L5/0058
摘要： Systems and methodologies are described that facilitate sending and/or receiving user equipment specific reference signals (UE-RSs) in a wireless communication environment. A UE-RS pattern can be selected, yielded, etc. based upon a number of symbols from a subframe utilized for downlink transmission. At least one time domain component of the UE-RS pattern can vary based upon the number of symbols from the subframe utilized for the downlink transmission. For instance, the at least one time domain component can be punctured, time-shifted, and so forth. Further, UE-RSs can be mapped to resource elements of the subframe as a function of the UE-RS pattern. Moreover, a UE can utilize the UE-RS pattern to detect UE-RSs on the resource elements of the subframe. Further, the UE can estimate a channel based upon the UE-RSs.
摘要翻译：描述了有助于在无线通信环境中发送和/或接收用户设备特定参考信号（UE-RS）的系统和方法。可以基于用于下行链路传输的子帧的多个符号来选择，产生UE-RS模式。 UE-RS模式的至少一个时域分量可以基于用于下行链路传输的子帧的符号数量而变化。例如，至少一个时域分量可以被打孔，时移等等。此外，UE-RS可以被映射到作为UE-RS模式的函数的子帧的资源元素。此外，UE可以利用UE-RS模式来检测子帧的资源元素上的UE-RS。此外，UE可以基于UE-RS估计信道。

35. 发明授权

US08842619B2 Scalable frequency band operation in wireless communication systems 有权
标题翻译：无线通信系统中的可扩展频带操作
公开(公告)号：US08842619B2
公开(公告)日：2014-09-23
申请号：US13178357
申请日：2011-07-07
申请人： Aamod Dinkar Khandekar , Alexei Yurievitch Gorokhov , Avneesh Agrawal , Rajiv Vijayan , Edward Harrison Teague , Fatih Ulupinar
发明人： Aamod Dinkar Khandekar , Alexei Yurievitch Gorokhov , Avneesh Agrawal , Rajiv Vijayan , Edward Harrison Teague , Fatih Ulupinar
IPC分类号： H04Q7/00 , H04L27/26 , H04L5/02 , H04W48/12
CPC分类号： H04L5/023 , H04L27/2602 , H04W48/12
摘要： To support mobile stations that are not capable of demodulating the entire bandwidth or that can be made to demodulate less than the entire bandwidth, a system, apparatus and method are provided to schedule users on less than all of the bandwidth. Further, certain users can be scheduled on more of the bandwidth than others.
摘要翻译：为了支持不能解调整个带宽或者可以使其解调的小于整个带宽的移动站，提供了一种系统，装置和方法，以在小于全部带宽上调度用户。此外，某些用户可以比其他用户更多地调度带宽。

36. 发明授权

US08781005B2 Scalable quantization of channel state information for MIMO transmission 有权
标题翻译：用于MIMO传输的信道状态信息的可扩展量化
公开(公告)号：US08781005B2
公开(公告)日：2014-07-15
申请号：US12893610
申请日：2010-09-29
申请人： Siddhartha Mallik , Alexei Yurievitch Gorokhov , Wooseok Nam
发明人： Siddhartha Mallik , Alexei Yurievitch Gorokhov , Wooseok Nam
IPC分类号： H04L27/00
CPC分类号： H04B7/0626 , H04B7/024 , H04B7/0639 , H04B7/0645 , H04B7/0658
摘要： Techniques for reporting channel state information (CSI) are described. A user equipment (UE) may receive data transmission from one or more cells among a plurality of cells and may report CSI for each of the plurality of cells. In an aspect, the UE may generate CSI with different quantization granularity (e.g., different codebook sizes), or different frequency granularity (e.g., different subband sizes), and/or different time granularity (e.g., different reporting intervals) for different cells based on the performance impact of each cell for data transmission to the UE. The performance impact of each cell may be determined based on a long-term channel gain or received power of the cell at the UE. The UE may quantize the CSI for each cell based on the codebook size for the cell. The UE may generate the CSI for each cell based on the subband size and/or the reporting interval for the cell.
摘要翻译：描述用于报告信道状态信息（CSI）的技术。用户设备（UE）可以从多个小区中的一个或多个小区接收数据传输，并且可以为多个小区中的每个小区报告CSI。在一方面，UE可以以不同的基于小区的不同的量化粒度（例如，不同的码本大小）或不同的频率粒度（例如，不同的子带大小）和/或不同的时间粒度（例如，不同的报告间隔）生成CSI 关于每个小区对UE的数据传输的性能影响。可以基于UE处的小区的长期信道增益或接收功率来确定每个小区的性能影响。 UE可以基于小区的码本大小量化每个小区的CSI。 UE可以基于小区的子带大小和/或报告间隔来生成每个小区的CSI。

37. 发明授权

US08761086B2 Method and apparatus for hierarchical codebook design in wireless communication 有权
标题翻译：无线通信中分层码本设计的方法和装置
公开(公告)号：US08761086B2
公开(公告)日：2014-06-24
申请号：US12917420
申请日：2010-11-01
申请人： Alexei Yurievitch Gorokhov , Amir Farajidana , Juan Montojo
发明人： Alexei Yurievitch Gorokhov , Amir Farajidana , Juan Montojo
IPC分类号： H04W4/00
CPC分类号： H04B7/0456 , H04B7/022 , H04B7/024 , H04B7/0452 , H04B7/0478 , H04B7/0639 , H04L27/2601 , H04W24/10
摘要： A method for use in a multi-user, multi-input multi-output (MU-MIMO) system includes generating a family of codebooks comprising at least one codebook set, the codebook set comprising a plurality of codebooks organized base on a transmission rank and providing the family of codebooks for use in a multiple description coding (MDC) channel feedback scheme.
摘要翻译：一种在多用户多输入多输出（MU-MIMO）系统中使用的方法包括生成包括至少一个码本集的码本族，所述码本集合包括基于传输秩组织的多个码本，提供用于多描述编码（MDC）信道反馈方案的码本系列。

38. 发明授权

US08675758B2 Methods and apparatus for measuring, communicating and/or using interference information 有权
标题翻译：用于测量，通信和/或使用干扰信息的方法和装置
公开(公告)号：US08675758B2
公开(公告)日：2014-03-18
申请号：US11766353
申请日：2007-06-21
申请人： Alexei Yurievitch Gorokhov , Aamod Dinkar Khandekar , Ravi Palanki , Rajat Prakash
发明人： Alexei Yurievitch Gorokhov , Aamod Dinkar Khandekar , Ravi Palanki , Rajat Prakash
IPC分类号： H04B7/02 , H04L1/02
CPC分类号： H04L27/2613 , H04B17/24 , H04B17/345 , H04B17/382 , H04L1/0026 , H04L5/0023 , H04L5/0053 , H04L5/0091 , H04W16/14 , H04W52/08 , H04W52/24 , H04W52/243 , H04W52/247 , H04W72/082
摘要： Wireless communications methods and apparatus are described. A communications apparatus, e.g., a base station, measures interference information, e.g., other sector interference information. The communications apparatus generates a preamble which includes a plurality of pilot symbols and at least one of the pilot symbols includes interference information. In some embodiments, the preamble is part of a superframe structure, e.g., a recurring superframe structure, including the preamble and a plurality of frames, at least some of the frames used to convey traffic data. The communications apparatus transmits the preamble, thus broadcasting the interference information to access terminals in the vicinity. An access terminal receives the preamble including a plurality of pilot signals, at least one of the pilot signals including interference information. The access terminal recovers the interference information from the received preamble and controls signal transmission based on the recovered interference information.
摘要翻译：描述了无线通信方法和装置。通信装置，例如基站，测量干扰信息，例如其他扇区干扰信息。通信装置生成包括多个导频符号的前导码，并且导频符号中的至少一个包括干扰信息。在一些实施例中，前导码是超帧结构的一部分，例如，包括前导码和多个帧的循环超帧结构，用于传送业务数据的至少一些帧。通信装置发送前导码，从而将干扰信息广播到附近的接入终端。接入终端接收包括多个导频信号的前导码，所述导频信号中的至少一个包括干扰信息。接入终端从接收到的前导码中恢复干扰信息，并根据恢复的干扰信息控制信号传输。

39. 发明授权

US08599708B2 Channel feedback based on reference signal 有权
标题翻译：基于参考信号的信道反馈
公开(公告)号：US08599708B2
公开(公告)日：2013-12-03
申请号：US13006216
申请日：2011-01-13
申请人： Wanshi Chen , Kapil Bhattad , Peter Gaal , Alexei Yurievitch Gorokhov , Juan Montojo
发明人： Wanshi Chen , Kapil Bhattad , Peter Gaal , Alexei Yurievitch Gorokhov , Juan Montojo
IPC分类号： G06F11/00 , H04J1/16 , H04L1/00 , H04L12/26
CPC分类号： H04W24/08 , H04L1/0026 , H04L1/0028 , H04L5/0041 , H04L5/0048
摘要： Techniques for supporting channel measurement and reporting in a wireless communication system are described. In one design, a cell transmits a cell-specific reference signal (CRS) used for channel estimation and coherent demodulation and a channel spatial information reference signal (CSI-RS) used for channel measurement and channel feedback reporting. The cell may transmit the CSI-RS less frequently than the CRS, or from more antenna ports than the CRS, or on fewer resource elements than the CRS, or a combination thereof. In one design, a user equipment (UE) determines at least one bandwidth part configured for the UE, with each bandwidth part covering at least one subband. The UE receives the CRS and CSI-RS from the cell, determines channel feedback information for the at least one bandwidth part based on the CSI-RS, sends the channel feedback information to the cell, and receives data transmitted by the cell based on the channel feedback information.
摘要翻译：描述了在无线通信系统中支持信道测量和报告的技术。在一种设计中，小区发送用于信道估计和相干解调的小区特定参考信号（CRS）以及用于信道测量和信道反馈报告的信道空间信息参考信号（CSI-RS）。小区可以比CRS更频繁地发送CSI-RS，或者比比CRS更多的天线端口或比CRS更少的资源元素或其组合来发送CSI-RS。在一种设计中，用户设备（UE）确定为UE配置的至少一个带宽部分，每个带宽部分覆盖至少一个子带。 UE从小区接收CRS和CSI-RS，基于CSI-RS确定至少一个带宽部分的信道反馈信息，向小区发送信道反馈信息，并接收基于小区的小区发送的数据渠道反馈信息。

40. 发明申请

US20120020433A1 FEEDBACK FOR SUPPORTING SU-MIMO AND MU-MIMO OPERATION IN WIRELESS COMMUNICATION 有权
标题翻译：用于在无线通信中支持SU-MIMO和MU-MIMO操作的反馈
公开(公告)号：US20120020433A1
公开(公告)日：2012-01-26
申请号：US13011595
申请日：2011-01-21
申请人： Kapil Bhattad , Peter Gaal , Alexei Yurievitch Gorokhov , Juan Montojo
发明人： Kapil Bhattad , Peter Gaal , Alexei Yurievitch Gorokhov , Juan Montojo
IPC分类号： H04L25/49
CPC分类号： H04B7/0417 , H04B7/0452 , H04B7/0639
摘要： A method, an apparatus, and a computer program product for wireless communication are provided in which a precoding matrix is determined from a set of precoding matrices with a first throughput based on a reference signal. In addition, a subset of precoding matrices is determined from the set of precoding matrices with a second throughput greater than a fraction of the first throughput based on the reference signal. Furthermore, a precoding matrix is selected from the subset of precoding matrices based on a metric.
摘要翻译：提供了一种用于无线通信的方法，装置和计算机程序产品，其中，从具有基于参考信号的第一吞吐量的一组预编码矩阵确定预编码矩阵。另外，根据基于参考信号的第二吞吐量大于第一吞吐量的一部分的预编码矩阵集来确定预编码矩阵的子集。此外，基于度量从预编码矩阵的子集中选择预编码矩阵。

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