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1. 发明授权

US08693588B2 Two-step joint demapping algorithm for LLR computation of MIMO signal based on sphere decoding 有权
标题翻译：基于球面解码的MIMO信号LLR计算的两步联合解映射算法
公开(公告)号：US08693588B2
公开(公告)日：2014-04-08
申请号：US13171915
申请日：2011-06-29
申请人： Michael L. McCloud , Dung Ngoc Doan , Alexei Yurievitch Gorokhov
发明人： Michael L. McCloud , Dung Ngoc Doan , Alexei Yurievitch Gorokhov
IPC分类号： H03D1/04
CPC分类号： H04L25/0328 , H04L25/03242 , H04L25/03305 , H04L25/067 , H04L27/38
摘要： Certain aspects of the present disclosure relate to a technique for two-step joint demapping based on sphere decoding for log-likelihood ratio (LLR) computation related to a received multiple-input multiple-output (MIMO) signal. The first step of the proposed algorithm comprises a linear minimum mean square error (LMMSE) based detection to form soft symbol estimates of symbols being transmitted. Then, the LMMSE-based soft symbol estimates can be utilized to form a set of constellation points of a stream interfering to a stream of interest. These candidate constellation points can be then subtracted (canceled) from the received signal to improve the LLR computations of the stream of interest. After the cancellation, the maximum ratio combining (MRC) can be applied to each individual stream to form more refined soft symbol estimates as well as an effective signal-to-noise ratio (SNR) estimate. The refined outputs of the MRC can be utilized to compute LLRs of transmitted bits based on the effective SNR and the refined soft symbol estimates associated with all the candidate constellation points from the set. The LLRs of transmitted bits may be employed by a channel decoder.
摘要翻译：本公开的某些方面涉及用于基于与接收的多输入多输出（MIMO）信号相关的对数似然比（LLR）计算的球体解码的两步联合解映射的技术。所提出的算法的第一步包括基于线性最小均方误差（LMMSE）的检测，以形成被发送的符号的软符号估计。然后，可以使用基于LMMSE的软符号估计来形成干扰感兴趣的流的流的一组星座点。然后可以从接收的信号中减去（取消）这些候选星座点，以改善感兴趣的流的LLR计算。在取消之后，最大比合并（MRC）可以应用于每个单独的流以形成更精细的软符号估计以及有效的信噪比（SNR）估计。可以利用MRC的精细输出来基于与集合中的所有候选星座点相关联的有效SNR和精细的软符号估计来计算发送比特的LLR。传输比特的LLR可以由信道解码器采用。

2. 发明申请

US20120219097A1 TWO-STEP JOINT DEMAPPING ALGORITHM FOR LLR COMPUTATION OF MIMO SIGNAL BASED ON SPHERE DECODING 有权
标题翻译：用于基于球面解码的MIMO信号的LLR计算的两步联合解算算法
公开(公告)号：US20120219097A1
公开(公告)日：2012-08-30
申请号：US13171915
申请日：2011-06-29
申请人： Michael L. McCloud , Dung Ngoc Doan , Alexei Yurievitch Gorokhov
发明人： Michael L. McCloud , Dung Ngoc Doan , Alexei Yurievitch Gorokhov
IPC分类号： H03D1/00
CPC分类号： H04L25/0328 , H04L25/03242 , H04L25/03305 , H04L25/067 , H04L27/38
摘要： Certain aspects of the present disclosure relate to a technique for two-step joint demapping based on sphere decoding for log-likelihood ratio (LLR) computation related to a received multiple-input multiple-output (MIMO) signal. The first step of the proposed algorithm comprises a linear minimum mean square error (LMMSE) based detection to form soft symbol estimates of symbols being transmitted. Then, the LMMSE-based soft symbol estimates can be utilized to form a set of constellation points of a stream interfering to a stream of interest. These candidate constellation points can be then subtracted (canceled) from the received signal to improve the LLR computations of the stream of interest. After the cancellation, the maximum ratio combining (MRC) can be applied to each individual stream to form more refined soft symbol estimates as well as an effective signal-to-noise ratio (SNR) estimate. The refined outputs of the MRC can be utilized to compute LLRs of transmitted bits based on the effective SNR and the refined soft symbol estimates associated with all the candidate constellation points from the set. The LLRs of transmitted bits may be employed by a channel decoder.
摘要翻译：本公开的某些方面涉及用于基于与接收的多输入多输出（MIMO）信号相关的对数似然比（LLR）计算的球体解码的两步联合解映射的技术。所提出的算法的第一步包括基于线性最小均方误差（LMMSE）的检测，以形成被发送的符号的软符号估计。然后，可以使用基于LMMSE的软符号估计来形成干扰感兴趣的流的流的一组星座点。然后可以从接收的信号中减去（取消）这些候选星座点，以改善感兴趣的流的LLR计算。在取消之后，最大比合并（MRC）可以应用于每个单独的流以形成更精细的软符号估计以及有效的信噪比（SNR）估计。可以利用MRC的精细输出来基于与集合中的所有候选星座点相关联的有效SNR和精细的软符号估计来计算发送比特的LLR。传输比特的LLR可以由信道解码器采用。

3. 发明授权

US09432991B2 Enabling support for transparent relays in wireless communication 有权
标题翻译：支持无线通信中的透明中继
公开(公告)号：US09432991B2
公开(公告)日：2016-08-30
申请号：US12763742
申请日：2010-04-20
申请人： Aamod Dinkar Khandekar , Ravi Palanki , Alexei Yurievitch Gorokhov
发明人： Aamod Dinkar Khandekar , Ravi Palanki , Alexei Yurievitch Gorokhov
IPC分类号： H04W72/00 , H04B7/14 , H04W72/04 , H04B7/26 , H04W72/12 , H04W84/04
CPC分类号： H04W72/121 , H04B7/0632 , H04B7/14 , H04B7/2606 , H04L5/005 , H04L5/14 , H04L25/0202 , H04W52/146 , H04W72/0433 , H04W72/0466 , H04W72/1289 , H04W84/047
摘要： Providing for improved implementation of supplemental wireless nodes in a wireless base station deployment is described herein. By way of example, a donor base station is configured to send a schedule of data transmission to and from a set of UEs served by the base station, and further can provide the schedule and identifiers for the set of UEs to one or more wireless nodes serving the base station. Respective access channel measurements between respective UEs and respective wireless nodes can be forwarded to the base station, which in turn can identify optimal access channels for the set of UEs. Additionally, the donor base station can schedule multiple data transmissions on these access channels in a common transmission time slot, to achieve cell-splitting gains for the data transmissions. Range boosting, differential coding, and supplemental channel quality mechanisms are also provided for various wireless communication arrangements described herein.
摘要翻译：本文描述了在无线基站部署中提供补充无线节点的改进实现。作为示例，施主基站被配置为向基站所服务的一组UE发送数据传输和从一组UE发送调度表，并且还可以向一组或多个无线节点提供该组UE的调度和标识符为基站服务。各个UE和各个无线节点之间的相应的接入信道测量可以被转发到基站，基站又可以识别该组UE的最佳接入信道。此外，施主基站可以在公共传输时隙中在这些接入信道上调度多个数据传输，以实现数据传输的小区分解增益。还提供了范围增强，差分编码和补充信道质量机制用于本文描述的各种无线通信布置。

4. 发明授权

US08923143B2 Open loop channel reporting in a wireless communication system 有权
标题翻译：无线通信系统中的开环通道报告
公开(公告)号：US08923143B2
公开(公告)日：2014-12-30
申请号：US12822086
申请日：2010-06-23
申请人： Alexei Yurievitch Gorokhov , Peter Gaal
发明人： Alexei Yurievitch Gorokhov , Peter Gaal
IPC分类号： H04J1/16 , H04L1/00 , H04L1/06 , H04L25/03
CPC分类号： H04L1/0026 , H04L1/0035 , H04L1/0631 , H04L2025/03426
摘要： Techniques for reporting channel quality indicator (CQI) in a wireless communication system are described. In one design, a UE determines CQI based on an assumption of a set of precoding matrices being used by a base station for data transmission to the UE. The base station may or may not actually use the set of precoding matrices assumed by the UE. The UE sends the CQI to the base station and thereafter receives data transmission sent by the base station based on the CQI. In one design, the UE determines the set of precoding matrices for a set of time-frequency resources available for data transmission to the UE. The UE determines the received signal quality of each time-frequency resource based on a precoding matrix for that time-frequency resource. The UE then determines the CQI based on the received signal qualities of the set of time-frequency resources.
摘要翻译：描述用于在无线通信系统中报告信道质量指示符（CQI）的技术。在一种设计中，UE基于由基站用于向UE的数据传输使用的一组预编码矩阵的假设来确定CQI。基站可以实际使用或不实际使用由UE假设的一组预编码矩阵。 UE将CQI发送到基站，然后基于CQI接收基站发送的数据发送。在一种设计中，UE确定可用于向UE传输数据的一组时频资源的预编码矩阵集合。 UE基于该时频资源的预编码矩阵来确定每个时频资源的接收信号质量。然后，UE基于该组时间 - 频率资源的接收信号质量来确定CQI。

5. 发明申请

US20120026940A1 RADIO REPORTING SET AND BACKHAUL REPORTING SET CONSTRUCTION FOR COORDINATED MULTI-POINT COMMUNICATION 审中-公开
标题翻译：无线电报告设置和协调多点通信的后台报告设置
公开(公告)号：US20120026940A1
公开(公告)日：2012-02-02
申请号：US13018980
申请日：2011-02-01
申请人： Alan Barbieri , Alexei Yurievitch Gorokhov , Siddhartha Mallik
发明人： Alan Barbieri , Alexei Yurievitch Gorokhov , Siddhartha Mallik
IPC分类号： H04W84/00
CPC分类号： H04W24/10 , H04B7/024 , H04L5/0032 , H04L5/0035 , H04L5/0057 , H04W72/085
摘要： Systems, methods, apparatus and articles of manufacture are disclosed for constructing radio reporting sets and backhaul reporting sets for coordinated multi-point transmission in a wireless communication network.
摘要翻译：公开了用于构建无线通信网络中的协调多点传输的无线电报告集和回程报告集的系统，方法，装置和制造。

6. 发明申请

US20120021688A1 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：US20120021688A1
公开(公告)日：2012-01-26
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： H04B15/00 , H04B1/00
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。

7. 发明申请

US20120020230A1 CHANNEL FEEDBACK BASED ON REFERENCE SIGNAL 有权
标题翻译：基于参考信号的通道反馈
公开(公告)号：US20120020230A1
公开(公告)日：2012-01-26
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： 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。

8. 发明申请

US20110268100A1 METHOD AND APPARATUS FOR HIERARCHICAL CODEBOOK DESIGN IN WIRELESS COMMUNICATION 有权
标题翻译：无线通信中层次化设计的方法与设备
公开(公告)号：US20110268100A1
公开(公告)日：2011-11-03
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： H04B7/216
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。

9. 发明申请

US20110237282A1 SCALABLE CHANNEL FEEDBACK FOR WIRELESS COMMUNICATION 有权
标题翻译：用于无线通信的可扩展通道反馈
公开(公告)号：US20110237282A1
公开(公告)日：2011-09-29
申请号：US12893538
申请日：2010-09-29
申请人： Stefan Geirhofer , Alexei Yurievitch Gorokhov , Siddhartha Mallik
发明人： Stefan Geirhofer , Alexei Yurievitch Gorokhov , Siddhartha Mallik
IPC分类号： H04B7/24 , H04B7/00
CPC分类号： H04W24/10 , H04B7/024 , H04B7/0626 , H04B7/0645 , H04B7/0658 , H04W8/24
摘要： Techniques for reporting channel state information (CSI) based on scalable channel feedback 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. For scalable channel feedback, the UE may report CSI with different granularity for different cells. The granularity of feedback for each cell may be selected based on the quality of a communication channel between the cell and the UE, which may be determined based on a long-term channel gain for the cell. The granularity of feedback may be defined by a subband size, a reporting interval, granularity of quantization of CSI, etc. The UE may report CSI for each cell based on the granularity of feedback for the cell. The UE may receive data transmission sent by at least one cell based on the reported CSI.
摘要翻译：描述了基于可扩展信道反馈来报告信道状态信息（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。对于可扩展的信道反馈，UE可以针对不同的小区报告具有不同粒度的CSI。可以基于小区和UE之间的通信信道的质量来选择每个小区的反馈的粒度，其可以基于小区的长期信道增益来确定。反馈的粒度可以由子带大小，报告间隔，CSI的量化粒度等来定义.UE可以基于小区的反馈的粒度来报告每个小区的CSI。 UE可以基于所报告的CSI接收由至少一个小区发送的数据传输。

10. 发明申请

US20210367724A1 METHOD FOR TRANSMITTING SOUNDING REFERENCE SIGNAL FOR USER EQUIPMENT WITH ASYMMETRIC TRANSMIT/RECEIVE 有权
公开(公告)号：US20210367724A1
公开(公告)日：2021-11-25
申请号：US16641639
申请日：2017-09-07
申请人： Yu ZHANG , Wanshi CHEN , Chao WEI , Peter GAAL , Timo Ville VINTOLA , Vishal MAHAJAN , Alexei Yurievitch GOROKHOV , Amir AMINZADEH GOHARI , Alexandros MANOLAKOS , Joseph Binamira SORIAGA , Valentin Alexandru GHEORGHIU , Quaicomm Incorporated
发明人： Yu Zhang , Wanshi Chen , Chao Wei , Peter Gaal , Timo Ville Vintola , Vishal Mahajan , Alexei Yurievitch Gorokhov , Amir Aminzadeh Gohari , Alexandros Manolakos , Joseph Binamira Soriaga , Valentin Alexandru Gheorghiu
IPC分类号： H04L5/00 , H04B7/0413
摘要： Methods, systems, and devices for wireless communications are described. A user equipment (UE) may transmit a UE capability message, the UE capability message indicating a supported transmit antenna switching (TxAS) capability for each port of the UE. The UE may receive a configuration message indicating an uplink multiple-input/multiple-output (UL MIMO) configuration for the UE, the UL MIMO configuration being based at least in part on the UE capability message. The UE may identify, based at least in part on the configuration message, a sounding reference signal (SRS) configuration to use for transmitting SRSs in conjunction with the UL MIMO communications, the SRS configuration comprising a configuration for transmission by the UE of SRSs using at least one of the two or more ports of the UE, the SRSs transmitted on one or more antennas of the UE selected according to a TxAS configuration for the respective port.

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