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公开(公告)号：US08509710B2
公开(公告)日：2013-08-13
申请号：US12235466
申请日：2008-09-22
IPC分类号： H04B1/18
CPC分类号： H04B7/0671 , H04B7/0413 , H04L5/0023 , H04L5/0048 , H04L25/0204 , H04L25/0226 , H04L25/0242 , H04L27/2613
摘要： Techniques for transmitting data using a combination of explicit cyclic delay and implicit cyclic delay are described. A transmitter may perform first processing for cyclic delay diversity (or explicit cyclic delay processing) based on a first set of cyclic delay values known to a receiver. The transmitter may perform precoding based on a precoding matrix either before or after the explicit cyclic delay processing. The transmitter may perform second processing for cyclic delay diversity (or implicit cyclic delay processing) based on a second set of cyclic delay values unknown to the receiver. The transmitter may perform both explicit and implicit cyclic delay processing for data and may perform only implicit cyclic delay processing for pilot. One entity may select the first set of cyclic delay values and inform the other entity. The transmitter may autonomously select the second set of cyclic delay values without informing the receiver.
摘要翻译： 描述了使用显式循环延迟和隐式循环延迟的组合来发送数据的技术。 发射机可以基于接收机已知的第一组循环延迟值来执行循环延迟分集（或显式循环延迟处理）的第一处理。 发射机可以在显式循环延迟处理之前或之后基于预编码矩阵执行预编码。 发射机可以基于接收机未知的第二组循环延迟值来执行循环延迟分集（或隐式循环延迟处理）的第二处理。 发射机可以对数据执行显式和隐式循环延迟处理，并且可以仅对导频执行隐式循环延迟处理。 一个实体可以选择第一组循环延迟值并通知另一个实体。 发射机可以自主地选择第二组循环延迟值而不通知接收机。
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公开(公告)号：US08780771B2
公开(公告)日：2014-07-15
申请号：US12026360
申请日：2008-02-05
CPC分类号： H04B7/0671 , H04B7/0473 , H04L5/0023 , H04L25/03898 , H04L27/2646
摘要： Techniques for sending a MIMO transmission using a combination of cyclic delay diversity and precoding are described. A set of delays (e.g., zero delay, small delay, and large delay) for cyclic delay diversity and a set of precoding matrices may be supported. In one design, a Node B may select a delay specifically for a UE or for a set of UEs served by the Node B. In another design, a UE may evaluate different combinations of precoding matrix and delay, determine the combination with the best performance, and send this combination of precoding matrix and delay to the Node B. The Node B may perform precoding with the precoding matrix and then processing for cyclic delay diversity based on the selected delay. Alternatively, the Node B may perform processing for cyclic delay diversity based on the selected delay and then precoding with the precoding matrix.
摘要翻译： 描述了使用循环延迟分集和预编码的组合来发送MIMO传输的技术。 可以支持用于循环延迟分集和一组预编码矩阵的一组延迟（例如，零延迟，小延迟和大延迟）。 在一种设计中，节点B可以针对UE或由节点B服务的一组UE选择延迟。在另一种设计中，UE可以评估预编码矩阵和延迟的不同组合，确定具有最佳性能的组合 并将预编码矩阵和延迟的组合发送到节点B.节点B可以利用预编码矩阵执行预编码，然后基于所选择的延迟来执行循环延迟分集的处理。 或者，节点B可以基于所选择的延迟执行循环延迟分集的处理，然后用预编码矩阵进行预编码。
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公开(公告)号：US20080247364A1
公开(公告)日：2008-10-09
申请号：US12026360
申请日：2008-02-05
CPC分类号： H04B7/0671 , H04B7/0473 , H04L5/0023 , H04L25/03898 , H04L27/2646
摘要： Techniques for sending a MIMO transmission using a combination of cyclic delay diversity and precoding are described. A set of delays (e.g., zero delay, small delay, and large delay) for cyclic delay diversity and a set of precoding matrices may be supported. In one design, a Node B may select a delay specifically for a UE or for a set of UEs served by the Node B. In another design, a UE may evaluate different combinations of precoding matrix and delay, determine the combination with the best performance, and send this combination of precoding matrix and delay to the Node B. The Node B may perform precoding with the precoding matrix and then processing for cyclic delay diversity based on the selected delay. Alternatively, the Node B may perform processing for cyclic delay diversity based on the selected delay and then precoding with the precoding matrix.
摘要翻译： 描述了使用循环延迟分集和预编码的组合来发送MIMO传输的技术。 可以支持用于循环延迟分集和一组预编码矩阵的一组延迟（例如，零延迟，小延迟和大延迟）。 在一种设计中，节点B可以针对UE或由节点B服务的一组UE选择延迟。在另一种设计中，UE可以评估预编码矩阵和延迟的不同组合，确定具有最佳性能的组合 并将预编码矩阵和延迟的组合发送到节点B.节点B可以利用预编码矩阵执行预编码，然后基于所选择的延迟来执行循环延迟分集的处理。 或者，节点B可以基于所选择的延迟执行循环延迟分集的处理，然后用预编码矩阵进行预编码。
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公开(公告)号：US20090197546A1
公开(公告)日：2009-08-06
申请号：US12235466
申请日：2008-09-22
IPC分类号： H04B1/02
CPC分类号： H04B7/0671 , H04B7/0413 , H04L5/0023 , H04L5/0048 , H04L25/0204 , H04L25/0226 , H04L25/0242 , H04L27/2613
摘要： Techniques for transmitting data using a combination of explicit cyclic delay and implicit cyclic delay are described. A transmitter may perform first processing for cyclic delay diversity (or explicit cyclic delay processing) based on a first set of cyclic delay values known to a receiver. The transmitter may perform precoding based on a precoding matrix either before or after the explicit cyclic delay processing. The transmitter may perform second processing for cyclic delay diversity (or implicit cyclic delay processing) based on a second set of cyclic delay values unknown to the receiver. The transmitter may perform both explicit and implicit cyclic delay processing for data and may perform only implicit cyclic delay processing for pilot. One entity may select the first set of cyclic delay values and inform the other entity. The transmitter may autonomously select the second set of cyclic delay values without informing the receiver.
摘要翻译： 描述了使用显式循环延迟和隐式循环延迟的组合来发送数据的技术。 发射机可以基于接收机已知的第一组循环延迟值来执行循环延迟分集（或显式循环延迟处理）的第一处理。 发射机可以在显式循环延迟处理之前或之后基于预编码矩阵执行预编码。 发射机可以基于接收机未知的第二组循环延迟值来执行循环延迟分集（或隐式循环延迟处理）的第二处理。 发射机可以对数据执行显式和隐式循环延迟处理，并且可以仅对导频执行隐式循环延迟处理。 一个实体可以选择第一组循环延迟值并通知另一个实体。 发射机可以自主地选择第二组循环延迟值而不通知接收机。
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5.发明授权公开(公告)号：US08588319B2
公开(公告)日：2013-11-19
申请号：US12444499
申请日：2007-11-06
CPC分类号： H04B7/065 , H04B7/0417 , H04B7/0617 , H04B7/0628 , H04B7/0641 , H04L1/0026 , H04L1/0625 , H04L1/0656 , H04L1/1812
摘要： Techniques for supporting MIMO transmission with layer permutation are described. In one aspect, multiple codewords may be generated for transmission from multiple antennas (e.g., virtual antennas), with the number of codewords being less than the number of antennas. Each codeword may be mapped across the multiple antennas. Two codewords may be generated. For rank 3, the first codeword may be mapped to one layer (or one antenna on each subcarrier), and the second codeword may be mapped to two layers (or two antennas on each subcarrier). For rank 4, each codeword may be mapped to two layers. In another aspect, a base CQI indicative of an average signal quality may be determined. A delta CQI indicative of improvement over the average signal quality may also be determined. In yet another aspect, selection may be performed with different penalty factors for different ranks or number of codewords.
摘要翻译： 描述了支持具有层置换的MIMO传输的技术。 在一个方面，可以生成多个码字用于从多个天线（例如，虚拟天线）的发射，其中码字的数量小于天线的数量。 每个码字可以跨多个天线映射。 可以生成两个码字。 对于秩3，第一码字可以映射到一个层（或每个子载波上的一个天线），并且第二码字可以映射到两个层（或每个子载波上的两个天线）。 对于等级4，每个码字可以映射到两个层。 另一方面，可以确定表示平均信号质量的基本CQI。 也可以确定表示对平均信号质量的改善的增量CQI。 在另一方面，可以针对不同等级或码字数量对不同的惩罚因素进行选择。
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6.发明申请公开(公告)号：US20100027697A1
公开(公告)日：2010-02-04
申请号：US12444499
申请日：2007-11-06
CPC分类号： H04B7/065 , H04B7/0417 , H04B7/0617 , H04B7/0628 , H04B7/0641 , H04L1/0026 , H04L1/0625 , H04L1/0656 , H04L1/1812
摘要： Techniques for supporting MIMO transmission with layer permutation are described. In one aspect, multiple codewords may be generated for transmission from multiple antennas (e.g., virtual antennas), with the number of codewords being less than the number of antennas. Each codeword may be mapped across the multiple antennas. Two codewords may be generated. For rank 3, the first codeword may be mapped to one layer (or one antenna on each subcarrier), and the second codeword may be mapped to two layers (or two antennas on each subcarrier). For rank 4, each codeword may be mapped to two layers. In another aspect, a base CQI indicative of an average signal quality may be determined. A delta CQI indicative of improvement over the average signal quality may also be determined. In yet another aspect, selection may be performed with different penalty factors for different ranks or number of codewords.
摘要翻译： 描述了用于支持具有层置换的MIMO传输的技术。 在一个方面，可以生成多个码字用于从多个天线（例如，虚拟天线）的发射，其中码字的数量小于天线的数量。 每个码字可以跨多个天线映射。 可以生成两个码字。 对于秩3，第一码字可以映射到一个层（或每个子载波上的一个天线），并且第二码字可以映射到两个层（或每个子载波上的两个天线）。 对于等级4，每个码字可以映射到两个层。 另一方面，可以确定表示平均信号质量的基本CQI。 也可以确定表示对平均信号质量的改善的增量CQI。 在另一方面，可以针对不同等级或码字数量对不同的惩罚因素进行选择。
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公开(公告)号：US09178640B2
公开(公告)日：2015-11-03
申请号：US13212829
申请日：2011-08-18
申请人： Kapil Bhattad , Tao Luo , Taesang Yoo , Xiaoxia Zhang , Xiliang Luo , Ke Liu , Durga Prasad Malladi
发明人： Kapil Bhattad , Tao Luo , Taesang Yoo , Xiaoxia Zhang , Xiliang Luo , Ke Liu , Durga Prasad Malladi
CPC分类号： H04J11/0083 , H04B1/70718 , H04L5/0007 , H04W28/04 , H04W48/16 , H04W88/02
摘要： User equipment (UE) associated with synchronous networks operate in a synchronous mode while UEs associated with asynchronous networks operate in an asynchronous mode. When operating in a synchronous mode, a UE can significantly improve performance of synchronization signal detection, data decoding, and tracking loop management by using the interference cancellation (IC) techniques that are not available in an asynchronous mode of operation. Obtaining synchronization indicators and determining the synchronization status of the current network by UE is disclosed. The determination may be based on the synchronization indicator, whether detected through signal detection, signal measurements, signal analysis, or the like.
摘要翻译： 与同步网络相关联的用户设备（UE）以同步模式工作，而与异步网络相关联的UE以异步模式工作。 当在同步模式下工作时，UE可以通过使用在异步操作模式中不可用的干扰消除（IC）技术来显着提高同步信号检测，数据解码和跟踪环路管理的性能。 公开了获取同步指示符并确定UE当前网络的同步状态。 该确定可以基于通过信号检测，信号测量，信号分析等检测的同步指示器。
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公开(公告)号：US20120044928A1
公开(公告)日：2012-02-23
申请号：US13212829
申请日：2011-08-18
申请人： Kapil Bhattad , Tao Luo , Taesang Yoo , Xiaoxia Zhang , Xiliang Luo , Ke Liu , Durga Prasad Malladi
发明人： Kapil Bhattad , Tao Luo , Taesang Yoo , Xiaoxia Zhang , Xiliang Luo , Ke Liu , Durga Prasad Malladi
IPC分类号： H04J3/06
CPC分类号： H04J11/0083 , H04B1/70718 , H04L5/0007 , H04W28/04 , H04W48/16 , H04W88/02
摘要： User equipment (UE) associated with synchronous networks operate in a synchronous mode while UEs associated with asynchronous networks operate in an asynchronous mode. When operating in a synchronous mode, a UE can significantly improve performance of synchronization signal detection, data decoding, and tracking loop management by using the interference cancellation (IC) techniques that are not available in an asynchronous mode of operation. Obtaining synchronization indicators and determining the synchronization status of the current network by UE is disclosed. The determination may be based on the synchronization indicator, whether detected through signal detection, signal measurements, signal analysis, or the like.
摘要翻译： 与同步网络相关联的用户设备（UE）以同步模式工作，而与异步网络相关联的UE以异步模式工作。 当在同步模式下工作时，UE可以通过使用在异步操作模式中不可用的干扰消除（IC）技术来显着提高同步信号检测，数据解码和跟踪环路管理的性能。 公开了获取同步指示符并确定UE当前网络的同步状态。 该确定可以基于通过信号检测，信号测量，信号分析等检测的同步指示器。
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9.发明授权公开(公告)号：US08594219B2
公开(公告)日：2013-11-26
申请号：US12109068
申请日：2008-04-24
申请人： Byoung-Hoon Kim , Taesang Yoo , Xiaoxia Zhang
发明人： Byoung-Hoon Kim , Taesang Yoo , Xiaoxia Zhang
CPC分类号： H04B7/0671 , H04B7/0434 , H04B7/0465 , H04B7/0617
摘要： Systems and methodologies are described that facilitate applying cyclic delay diversity (CDD) and precoding to wireless transmissions. In particular, data vectors to be transmitted to a number of receive antennas of a receiver can be transformed to a virtual antenna domain. CDD can be applied to this domain followed by precoding to allow the benefits of precoding to remain though CDD is applied. In this regard, the resulting signals can be transmitted without pouring transmission energy into null spaces unreachable by receiving devices.
摘要翻译： 描述了有助于将循环延迟分集（CDD）和预编码应用于无线传输的系统和方法。 具体地，可以将要发送到接收机的多个接收天线的数据向量变换为虚拟天线域。 可以将CDD应用于该域，然后进行预编码，以允许通过应用CDD来保留预编码的优点。 在这方面，可以传输所得到的信号，而不会将传输能量倾倒到通过接收装置不可达的空间空间中。
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10.发明申请公开(公告)号：US20080287075A1
公开(公告)日：2008-11-20
申请号：US12109068
申请日：2008-04-24
申请人： Byoung-Hoon Kim , Taesang Yoo , Xiaoxia Zhang
发明人： Byoung-Hoon Kim , Taesang Yoo , Xiaoxia Zhang
IPC分类号： H04B7/02
CPC分类号： H04B7/0671 , H04B7/0434 , H04B7/0465 , H04B7/0617
摘要： Systems and methodologies are described that facilitate applying cyclic delay diversity (CDD) and precoding to wireless transmissions. In particular, data vectors to be transmitted to a number of receive antennas of a receiver can be transformed to a virtual antenna domain. CDD can be applied to this domain followed by precoding to allow the benefits of precoding to remain though CDD is applied. In this regard, the resulting signals can be transmitted without pouring transmission energy into null spaces unreachable by receiving devices.
摘要翻译： 描述了有助于将循环延迟分集（CDD）和预编码应用于无线传输的系统和方法。 具体地，可以将要发送到接收机的多个接收天线的数据向量变换为虚拟天线域。 可以将CDD应用于该域，然后进行预编码，以允许通过应用CDD来保留预编码的优点。 在这方面，可以传输所得到的信号，而不会将传输能量倾倒到通过接收装置不可达的空间空间中。
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