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21. 发明申请

US20090274226A1 SOUNDING CHANNEL BASED FEEDBACK IN A WIRELESS COMMUNICATION SYSTEM 审中-公开
标题翻译：无线通信系统中的基于通道的反馈
公开(公告)号：US20090274226A1
公开(公告)日：2009-11-05
申请号：US12420092
申请日：2009-04-08
申请人： Bishwarup Mondal , Amitabha Ghosh , Fan Wang
发明人： Bishwarup Mondal , Amitabha Ghosh , Fan Wang
IPC分类号： H04L27/28 , H04B1/00
CPC分类号： H04L5/0023 , H04L5/0048 , H04L25/0226 , H04L25/0228 , H04L25/03343 , H04L27/2613 , H04L2025/03808
摘要： An apparatus and method for providing sounding channel based feedback in an OFDM communication system includes a first step (400) of defining a sounding channel spread out over multiple OFDM symbols within a frame. A next step (402) includes conveying a message to a subscriber station including information about the sounding channel. A next step (404) includes requesting a sounding waveform from the subscriber station. A next step (408) includes sending the sounding waveform from the subscriber station over the multiple OFDM symbols. A next step (410) includes sending a downlink transmission weighted in response to the sounding waveform.
摘要翻译：一种用于在OFDM通信系统中提供基于探测信道的反馈的装置和方法包括：第一步骤（400），其定义在帧内的多个OFDM符号上扩展的探测信道。下一步骤（402）包括将消息传送到订户站，包括关于探测信道的信息。下一步骤（404）包括从用户站请求探测波形。下一步骤（408）包括通过多个OFDM符号从用户站发送探测波形。下一步骤（410）包括响应于探测波形发送加权的下行链路传输。

22. 发明授权

US08396162B2 Method and apparatus for choosing a modulation and coding rate in a multi-user, MIMO communication system 有权
标题翻译：用于在多用户MIMO通信系统中选择调制和编码率的方法和装置
公开(公告)号：US08396162B2
公开(公告)日：2013-03-12
申请号：US12263590
申请日：2008-11-03
申请人： Timothy A. Thomas , Amitabha Ghosh , Bishwarup Mondal
发明人： Timothy A. Thomas , Amitabha Ghosh , Bishwarup Mondal
IPC分类号： H04L25/03
CPC分类号： H04L1/0003 , H04B7/0634 , H04B7/0639 , H04L1/0025 , H04L1/0036
摘要： A method and apparatus for choosing a modulation and coding rate in a MU-MIMO communication system is provided herein. During operation, a node will determine the MCR to feed back to the base even though the mobile does not know which of the possible interferers (if any) will be using the same time/frequency resources as the mobile. This takes place via the mobile node calculating best antenna weights (codebook choice) for each group of subcarriers that can be potentially used by the mobile. Transmit weights v for each interferer are then determined and the weights are utilized to determine a best modulation and coding rate for the mobile.
摘要翻译：本文提供了一种在MU-MIMO通信系统中选择调制和编码速率的方法和装置。在运行期间，即使移动设备不知道哪个可能的干扰源（如果有的话）将使用与移动设备相同的时间/频率资源，节点将确定MCR反馈到基站。这通过移动节点进行，该移动节点为移动台可能使用的每组子载波计算最佳天线权重（码本选择）。然后确定每个干扰源的发射权重v，并且使用权重来确定移动台的最佳调制和编码率。

23. 发明申请

US20100111223A1 METHOD AND APPARATUS FOR CHOOSING A MODULATION AND CODING RATE IN A MULTI-USER, MIMO COMMUNICATION SYSTEM 有权
标题翻译：在多用户MIMO通信系统中选择调制和编码速率的方法和装置
公开(公告)号：US20100111223A1
公开(公告)日：2010-05-06
申请号：US12263590
申请日：2008-11-03
申请人： Timothy A. Thomas , Amitabha Ghosh , Bishwarup Mondal
发明人： Timothy A. Thomas , Amitabha Ghosh , Bishwarup Mondal
IPC分类号： H04L25/03
CPC分类号： H04L1/0003 , H04B7/0634 , H04B7/0639 , H04L1/0025 , H04L1/0036
摘要： A method and apparatus for choosing a modulation and coding rate in a MU-MIMO communication system is provided herein. During operation, a node will determine the MCR to feed back to the base even though the mobile does not know which of the possible interferers (if any) will be using the same time/frequency resources as the mobile. This takes place via the mobile node calculating best antenna weights (codebook choice) for each group of subcarriers that can be potentially used by the mobile. Transmit weights v for each interferer are then determined and the weights are utilized to determine a best modulation and coding rate for the mobile.
摘要翻译：本文提供了一种在MU-MIMO通信系统中选择调制和编码速率的方法和装置。在运行期间，即使移动设备不知道哪个可能的干扰源（如果有的话）将使用与移动设备相同的时间/频率资源，节点将确定MCR反馈到基站。这通过移动节点进行，该移动节点为移动台可能使用的每组子载波计算最佳天线权重（码本选择）。然后确定每个干扰源的发射权重v，并且使用权重来确定移动台的最佳调制和编码率。

24. 发明授权

US08204014B2 Method and system for codebook-based closed-loop MIMO using common pilots and analog feedback 有权
标题翻译：使用公共导频和模拟反馈的基于码本的闭环MIMO的方法和系统
公开(公告)号：US08204014B2
公开(公告)日：2012-06-19
申请号：US12405307
申请日：2009-03-17
申请人： Bishwarup Mondal , Kevin L. Baum , Amitabha Ghosh , Timothy Thomas , Frederick Vook , Fan Wang
发明人： Bishwarup Mondal , Kevin L. Baum , Amitabha Ghosh , Timothy Thomas , Frederick Vook , Fan Wang
IPC分类号： H04W4/00 , H04L1/00 , H04L12/26
CPC分类号： H04L5/005 , H04B7/0417 , H04B7/0617 , H04B7/0665 , H04L25/0204 , H04L25/0224 , H04L25/03343 , H04L2025/03414 , H04L2025/03808
摘要： A method and system that enables the usage of sounding-based feedback or analog feedback in a MIMO communication system with non-beamformed or broadcast pilot symbols is disclosed. The mobile station may employ a feedback channel to send a sounding waveform to a base station, a feedforward channel to receive from the base station codebook weights derived from the send sounding waveform, a receiver to receive communication from the base station, and a processor to detect beamformed data from the received communication and received codebook weights from the base station. The base station processes the sounding waveform to determine codebook weights on groups of subcarriers. Additionally, the base station transmits the beamformed payload and broadcast pilots to the mobile station.
摘要翻译：公开了一种能够在具有非波束形成或广播导频符号的MIMO通信系统中使用基于声音的反馈或模拟反馈的方法和系统。移动台可以使用反馈信道向基站发送探测波形，从基站接收来自发送探测波形的码本的前馈信道，从基站接收通信的接收机和处理器检测来自接收到的通信的波束形成的数据和从基站接收的码本权重。基站处理探测波形以确定子载波组上的码本权重。此外，基站将波束形成的有效载荷和广播导频发送到移动台。

25. 发明申请

US20100150266A1 METHOD AND APPARATUS FOR CODEBOOK-BASED FEEDBACK IN A CLOSED LOOP WIRELESS COMMUNICATION SYSTEM 有权
标题翻译：封闭式无线通信系统中基于代码的反馈的方法与装置
公开(公告)号：US20100150266A1
公开(公告)日：2010-06-17
申请号：US12334917
申请日：2008-12-15
申请人： Bishwarup Mondal , Amitabha Ghosh , Fan Wang
发明人： Bishwarup Mondal , Amitabha Ghosh , Fan Wang
IPC分类号： H04L25/03
CPC分类号： H04B7/0478 , H04B7/0417 , H04B7/0639 , H04L5/0007 , H04L25/03343
摘要： A method and apparatus are provided for feedback for closed-loop transmitting with multiple transmit antenna elements and multiple receive antenna elements. A base station includes a codebook containing sets of weightings for the multiple transmit antenna elements, with each set of weightings identified by an index and the codebook known to the base station and a served mobile station (MS). The base station pre-codes pilot signals using a precoding matrix, preferably a unitary matrix, to produce pre-coded pilot signals, which precoding matrix may or may not be known to the MS and which precoding matrix may or may not be included in the codebook. The base station then transmits the pre-coded pilot signals to the MS via the multiple transmit antenna elements and, in response, receives an index to a set of weightings in the codebook for use in a subsequent transmission of a data stream.
摘要翻译：提供了一种用于具有多个发射天线元件和多个接收天线元件的闭环发射的反馈的方法和装置。基站包括码本，其包含多个发射天线单元的加权集合，每一组加权由索引和基站已知的码本和被服务的移动台（MS）标识。基站使用预编码矩阵，优选地是酉矩阵来预编码导频信号，以产生预编码的导频信号，预编码矩阵可以是MS也可以不是已知的，并且哪个预编码矩阵可以或可以不包括在码本。然后，基站经由多个发送天线元件向MS发送预先编码的导频信号，作为响应，接收到码本中的一组加权的索引，用于数据流的后续发送。

26. 发明申请

US20090238303A1 METHOD AND SYSTEM FOR CODEBOOK-BASED CLOSED-LOOP MIMO USING COMMON PILOTS AND ANALOG FEEDBACK 有权
标题翻译：使用通用引导和模拟反馈的基于代码库的闭环MIMO的方法和系统
公开(公告)号：US20090238303A1
公开(公告)日：2009-09-24
申请号：US12405307
申请日：2009-03-17
申请人： Bishwarup Mondal , Kevin L. Baum , Amitabha Ghosh , Timothy Thomas , Frederick Vook , Fan Wang
发明人： Bishwarup Mondal , Kevin L. Baum , Amitabha Ghosh , Timothy Thomas , Frederick Vook , Fan Wang
IPC分类号： H04L27/00 , H04L27/06
CPC分类号： H04L5/005 , H04B7/0417 , H04B7/0617 , H04B7/0665 , H04L25/0204 , H04L25/0224 , H04L25/03343 , H04L2025/03414 , H04L2025/03808
摘要： A method and system that enables the usage of sounding-based feedback or analog feedback in a MIMO communication system with non-beamformed or broadcast pilot symbols is disclosed. The mobile station may employ a feedback channel to send a sounding waveform to a base station, a feedforward channel to receive from the base station codebook weights derived from the send sounding waveform, a receiver to receive communication from the base station, and a processor to detect beamformed data from the received communication and received codebook weights from the base station. The base station processes the sounding waveform to determine codebook weights on groups of subcarriers. Additionally, the base station transmits the beamformed payload and broadcast pilots to the mobile station.
摘要翻译：公开了一种能够在具有非波束形成或广播导频符号的MIMO通信系统中使用基于声音的反馈或模拟反馈的方法和系统。移动台可以使用反馈信道向基站发送探测波形，从基站接收来自发送探测波形的码本的前馈信道，从基站接收通信的接收机和处理器检测来自接收到的通信的波束形成的数据和从基站接收的码本权重。基站处理探测波形以确定子载波组上的码本权重。此外，基站将波束形成的有效载荷和广播导频发送到移动台。

27. 发明授权

US08194762B2 Feedforward of non-quantized precoding weights in a wireless communications system 有权
标题翻译：无量子化预编码权重在无线通信系统中的前馈
公开(公告)号：US08194762B2
公开(公告)日：2012-06-05
申请号：US12193820
申请日：2008-08-19
申请人： Bishwarup Mondal , Amitabha Ghosh , Fan Wang
发明人： Bishwarup Mondal , Amitabha Ghosh , Fan Wang
IPC分类号： H04K1/10
CPC分类号： H04L25/03343 , H04L5/0023 , H04L5/0048 , H04L2025/03414 , H04L2025/03426 , H04L2025/03808
摘要： An apparatus and method to feedforward non-quantized precoding weights in an OFDM communication system includes a first step (300) of sending feedback information from a subscriber station (SS) to a base station (BS). A next step (302) includes deriving non-quantized weight information from the feedback information. A next step (304) includes transmitting symbols carrying the non-quantized weight information and non-precoded pilot symbols by the BS. A next step (305) includes receiving the information and symbols by the SS. A next step (306) includes estimating the non-quantized weights from the symbols carrying the non-quantized weight information and the non-precoded pilot symbols by the SS. A next step (308) includes decoding data from the BS by the SS using the estimated non-quantized weight information.
摘要翻译：用于在OFDM通信系统中前馈非量化预编码权重的装置和方法包括从用户站（SS）向基站（BS）发送反馈信息的第一步骤（300）。下一步骤（302）包括从反馈信息中导出非量化的权重信息。下一步骤（304）包括由BS发送携带非量化权重信息和非预编码导频符号的符号。下一步骤（305）包括由SS接收信息和符号。下一步骤（306）包括通过SS从携带非量化权重信息和非预编码导频符号的符号估计非量化权重。下一步骤（308）包括使用估计的非量化权重信息从SS对来自BS的数据进行解码。

28. 发明申请

US20130242748A1 HIERARCHICAL NETWORK AND INTERFERENCE MANAGEMENT 有权
标题翻译：分层网络和干扰管理
公开(公告)号：US20130242748A1
公开(公告)日：2013-09-19
申请号：US13422459
申请日：2012-03-16
申请人： Nitin MANGALVEDHE , Amitabha Ghosh , Bishwarup Mondal , Rapeepat Ratasuk
发明人： Nitin MANGALVEDHE , Amitabha Ghosh , Bishwarup Mondal , Rapeepat Ratasuk
IPC分类号： H04L12/26
CPC分类号： H04W24/02
摘要： The specification and drawings present a new method, apparatus and software related product (e.g., a computer readable memory) for network management through a hierarchical architecture with a control functionality of a network server (e.g., C-SON) in relationship to clusters comprising eNBs (access points), and for implementing coordinated multi-point (CoMP) transmission and reception in conjunction with inter-cell interference coordination (ICIC) in wireless networks such as LTE wireless networks. In particular, embodiments of the invention describe control and coordination mechanisms among the network elements for different network architectures and use-case scenarios. Such mechanisms may be managed by a centralized self-organizing network controller such as C-SON and hierarchically via localized controllers (such as cluster coordinators) residing in macro eNBs depending on system architectural constraints and network state. A fault-tolerant mechanism then may be defined to recover from failure of controlling sub-elements so that the network remains stable at all times.
摘要翻译：本说明书和附图提出了一种用于网络管理的新方法，装置和软件相关产品（例如，计算机可读存储器），其通过具有与包括eNB的集群相关联的网络服务器（例如，C-SON）的控制功能的分级架构（接入点），以及在诸如LTE无线网络的无线网络中结合小区间干扰协调（ICIC）实现协调的多点（CoMP）发送和接收。特别地，本发明的实施例描述了用于不同网络架构和用例场景的网络元件之间的控制和协调机制。这样的机制可以由诸如C-SON的集中式自组织网络控制器管理，并且根据系统架构约束和网络状态分层地经由驻留在宏eNB中的集中式控制器（例如集群协调器）进行管理。然后可以定义容错机制以从控制子元件的故障中恢复，使得网络始终保持稳定。

29. 发明申请

US20110243262A1 METHOD AND APPARATUS FOR CHANNEL SOUNDING IN AN ORTHOGONAL FREQUENCY DIVISION MULTIPLEXING COMMUNICATION SYSTEM 有权
标题翻译：正交频分复用通信系统中信道的方法与装置
公开(公告)号：US20110243262A1
公开(公告)日：2011-10-06
申请号：US12848448
申请日：2010-08-02
申请人： Rapeepat Ratasuk , Amitabha Ghosh , Bishwarup Mondal
发明人： Rapeepat Ratasuk , Amitabha Ghosh , Bishwarup Mondal
IPC分类号： H04K1/10
CPC分类号： H04L5/003 , H04L27/261
摘要： An Orthogonal Frequency Division Multiplexing communication system is provided that triggers a transmission of an uplink sounding signal by use of a Downlink Control Information (DCI) message. In various embodiments of the invention, the DCI message may be used to individually trigger an uplink sounding signal by a single user equipment or may be used to trigger an uplink sounding signal by a group of users equipment.
摘要翻译：提供了一种通过使用下行链路控制信息（DCI）消息来触发上行链路探测信号的传输的正交频分复用通信系统。在本发明的各种实施例中，DCI消息可以用于单个用户设备单独地触发上行链路探测信号，或者可以用于一组用户设备触发上行链路探测信号。

30. 发明授权

US08798021B2 Hierarchical network and interference management 有权
标题翻译：分层网络和干扰管理
公开(公告)号：US08798021B2
公开(公告)日：2014-08-05
申请号：US13422459
申请日：2012-03-16
申请人： Nitin Mangalvedhe , Amitabha Ghosh , Bishwarup Mondal , Rapeepat Ratasuk
发明人： Nitin Mangalvedhe , Amitabha Ghosh , Bishwarup Mondal , Rapeepat Ratasuk
IPC分类号： H04W4/00
CPC分类号： H04W24/02
摘要： The specification and drawings present a new method, apparatus and software related product (e.g., a computer readable memory) for network management through a hierarchical architecture with a control functionality of a network server (e.g., C-SON) in relationship to clusters comprising eNBs (access points), and for implementing coordinated multi-point (CoMP) transmission and reception in conjunction with inter-cell interference coordination (ICIC) in wireless networks such as LTE wireless networks. In particular, embodiments of the invention describe control and coordination mechanisms among the network elements for different network architectures and use-case scenarios. Such mechanisms may be managed by a centralized self-organizing network controller such as C-SON and hierarchically via localized controllers (such as cluster coordinators) residing in macro eNBs depending on system architectural constraints and network state. A fault-tolerant mechanism then may be defined to recover from failure of controlling sub-elements so that the network remains stable at all times.
摘要翻译：说明书和附图提出了一种用于网络管理的新方法，装置和软件相关产品（例如，计算机可读存储器），其通过具有与包括eNB的集群相关联的网络服务器（例如，C-SON）的控制功能的分级架构（接入点），并且用于在诸如LTE无线网络的无线网络中结合小区间干扰协调（ICIC）来实现协调的多点（CoMP）发送和接收。特别地，本发明的实施例描述了用于不同网络架构和用例场景的网络元件之间的控制和协调机制。这样的机制可以由诸如C-SON的集中式自组织网络控制器管理，并且根据系统架构约束和网络状态分层地经由驻留在宏eNB中的集中式控制器（例如集群协调器）来管理。然后可以定义容错机制以从控制子元件的故障中恢复，使得网络始终保持稳定。

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