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1. 发明授权

US09369885B2 Method and apparatus for selecting reference signal tones for decoding a channel 有权
公开(公告)号：US09369885B2
公开(公告)日：2016-06-14
申请号：US13269408
申请日：2011-10-07
申请人： Kapil Bhattad , Ke Liu , Tao Luo , Yongbin Wei
发明人： Kapil Bhattad , Ke Liu , Tao Luo , Yongbin Wei
IPC分类号： H04B1/00 , H04J11/00 , H04B7/00 , H04W24/02 , H04L27/26 , H04L5/00 , H04L25/02 , H04W84/04
CPC分类号： H04W24/02 , H03G1/02 , H04L5/0053 , H04L25/0202 , H04L27/2601 , H04W84/045
摘要： Methods and apparatuses are provided that include selecting reference signal (RS) or other tones to utilize in estimating a channel for decoding one or more channels. Where the RS tones are interfered by other base stations, interference cancelation can be performed over the RS tones. Since interference can vary over the tones, interference cancelation can yield RS tones of varying quality. Thus, a quality of each of the RS tones can be determined, and at least a subset of the RS tones can be selected for estimating a channel. Additionally or alternatively, the RS tones can be weighted or otherwise classified for performing channel estimation using the RS tones.

2. 发明申请

US20120263247A1 METHOD AND APPARATUS FOR SELECTING REFERENCE SIGNAL TONES FOR DECODING A CHANNEL 有权
标题翻译：用于选择用于解码通道的参考信号音的方法和装置
公开(公告)号：US20120263247A1
公开(公告)日：2012-10-18
申请号：US13269408
申请日：2011-10-07
申请人： Kapil Bhattad , Ke Liu , Tao Luo , Yongbin Wei
发明人： Kapil Bhattad , Ke Liu , Tao Luo , Yongbin Wei
IPC分类号： H04B15/00 , H04L27/28 , H04B1/10
CPC分类号： H04W24/02 , H03G1/02 , H04L5/0053 , H04L25/0202 , H04L27/2601 , H04W84/045
摘要： Methods and apparatuses are provided that include selecting reference signal (RS) or other tones to utilize in estimating a channel for decoding one or more channels. Where the RS tones are interfered by other base stations, interference cancelation can be performed over the RS tones. Since interference can vary over the tones, interference cancelation can yield RS tones of varying quality. Thus, a quality of each of the RS tones can be determined, and at least a subset of the RS tones can be selected for estimating a channel. Additionally or alternatively, the RS tones can be weighted or otherwise classified for performing channel estimation using the RS tones.
摘要翻译：提供了包括选择参考信号（RS）或其他音调以用于估计用于解码一个或多个信道的信道的方法和装置。在RS音调被其他基站干扰的情况下，可以通过RS音调进行干扰消除。由于干扰可以在音调上变化，所以干扰消除可以产生质量不同的RS音调。因此，可以确定每个RS音调的质量，并且可以选择RS音调的至少一个子集来估计频道。附加地或替代地，可以对RS音调进行加权或分类，以使用RS音调进行信道估计。

3. 发明申请

US20110292875A1 APPARATUS AND METHOD FOR PHYSICAL BROADCAST CHANNEL (PBCH) DECODING FOR MULTIPLE CELLS 有权
标题翻译：用于多个细胞的物理广播通道（PBCH）解码的装置和方法
公开(公告)号：US20110292875A1
公开(公告)日：2011-12-01
申请号：US13117033
申请日：2011-05-26
申请人： Tao Luo , Ke Liu , Kapil Bhattad , Taesang Yoo , Xiaoxia Zhang
发明人： Tao Luo , Ke Liu , Kapil Bhattad , Taesang Yoo , Xiaoxia Zhang
IPC分类号： H04W4/00
CPC分类号： H04J11/0056 , H04B1/7107
摘要： A method of wireless communication includes generating a list of cells for physical broadcast channel (PBCH) decoding. The method also includes allocating memory for decoding and cancelling a subset of cells from the generated cell list. The method further includes storing information related to subsets of cells from the generated list in the allocated memory during different time periods. The allocated memory is sufficient for attempting, at each time period, decoding of each subset of cells and cancelling of decoded cells in each subset. The method further includes cycling through the generated cell list by processing each subset of the cell list during the different time periods.
摘要翻译：一种无线通信方法包括：生成用于物理广播信道（PBCH）解码的小区列表。该方法还包括分配用于从所生成的小区列表中解码和消除小区子集的存储器。该方法还包括在不同时间段期间将与生成的列表中的小区子集有关的信息存储在所分配的存储器中。分配的存储器足以在每个时间段尝试对每个子集的每个子集进行解码并且消除每个子集中的解码单元。该方法还包括通过在不同时间段内处理单元列表的每个子集来循环通过所生成的单元列表。

4. 发明申请

US20110274097A1 DETECTING AND REPORTING PHYSICAL-LAYER CELL IDENTIFIER COLLISIONS IN WIRELESS NETWORKS 有权
标题翻译：在无线网络中检测和报告物理层细胞识别器碰撞
公开(公告)号：US20110274097A1
公开(公告)日：2011-11-10
申请号：US13101877
申请日：2011-05-05
申请人： Xiaoxia Zhang , Ke Liu , Kapil Bhattad , Taesang Yoo , Tao Luo
发明人： Xiaoxia Zhang , Ke Liu , Kapil Bhattad , Taesang Yoo , Tao Luo
IPC分类号： H04W4/00
CPC分类号： H04W24/02 , H04W16/14 , H04W48/08
摘要： Physical-Layer Cell Identifier (PCID) collisions may occur in a wireless network when two neighboring evolved Node Bs (eNBs) having different Global Cell Identifiers (GCID) select identical PCIDs. Evolved Node Bs may uniquely identify themselves by transmitting on a broadcast channel, such as a Physical Broadcast Channel (PBCH), a pattern of bits corresponding to the eNB's GCID. Individual User Equipments (UEs) may recognize the PCID collision by decoding the PBCH payload to identify different GCID-modulated payloads from two eNBs involved in the PCID collision. Alternatively, UEs may detect PCID collisions in the wireless network by monitoring Primary Synchronization Signals (PSS) and Secondary Synchronization Signals (SSS) on the PBCH for identical signals separated by a relatively large time offset. After detecting a PCID collision, the UEs may attempt by best effort to report the PCID collision, may report to a fallback eNB, or the UEs may use special resources on an uplink channel.
摘要翻译：当具有不同的全局小区标识符（GCID）的两个相邻演进节点B（eNB）选择相同的PCID时，物理层小区标识符（PCID）冲突可能发生在无线网络中。演进节点B可以通过在诸如物理广播信道（PBCH）的广播信道上发送与eNB的GCID相对应的比特模式来唯一地标识自身。个体用户设备（UE）可以通过解码PBCH净荷来识别PCID冲突，从而识别来自涉及PCID冲突的两个eNB的不同GCID调制的有效载荷。或者，UE可以通过监视PBCH上的主同步信号（PSS）和次同步信号（SSS）来检测无线网络中的PCID冲突，以相对较大的时间偏移分开的相同信号。在检测到PCID冲突之后，UE可以尽最大努力报告PCID冲突，可以向后退eNB报告，或者UE可以在上行链路信道上使用特殊资源。

5. 发明授权

US09143955B2 Detecting and reporting physical-layer cell identifier collisions in wireless networks 有权
标题翻译：检测和报告无线网络中的物理层小区标识符冲突
公开(公告)号：US09143955B2
公开(公告)日：2015-09-22
申请号：US13101877
申请日：2011-05-05
申请人： Xiaoxia Zhang , Ke Liu , Kapil Bhattad , Taesang Yoo , Tao Luo
发明人： Xiaoxia Zhang , Ke Liu , Kapil Bhattad , Taesang Yoo , Tao Luo
IPC分类号： H04W4/00 , H04W24/02 , H04W48/08 , H04W16/14
CPC分类号： H04W24/02 , H04W16/14 , H04W48/08
摘要： Physical-Layer Cell Identifier (PCID) collisions may occur in a wireless network when two neighboring evolved Node Bs (eNBs) having different Global Cell Identifiers (GCID) select identical PCIDs. Evolved Node Bs may uniquely identify themselves by transmitting on a broadcast channel, such as a Physical Broadcast Channel (PBCH), a pattern of bits corresponding to the eNB's GCID. Individual User Equipments (UEs) may recognize the PCID collision by decoding the PBCH payload to identify different GCID-modulated payloads from two eNBs involved in the PCID collision. Alternatively, UEs may detect PCID collisions in the wireless network by monitoring Primary Synchronization Signals (PSS) and Secondary Synchronization Signals (SSS) on the PBCH for identical signals separated by a relatively large time offset. After detecting a PCID collision, the UEs may attempt by best effort to report the PCID collision, may report to a fallback eNB, or the UEs may use special resources on an uplink channel.
摘要翻译：当具有不同的全局小区标识符（GCID）的两个相邻演进节点B（eNB）选择相同的PCID时，物理层小区标识符（PCID）冲突可能发生在无线网络中。演进节点B可以通过在诸如物理广播信道（PBCH）的广播信道上发送与eNB的GCID相对应的比特模式来唯一地标识自身。个体用户设备（UE）可以通过解码PBCH净荷来识别PCID冲突，从而识别来自涉及PCID冲突的两个eNB的不同GCID调制的有效载荷。或者，UE可以通过监视PBCH上的主同步信号（PSS）和次同步信号（SSS）来检测无线网络中的PCID冲突，用相对较大的时间偏移分开的相同信号。在检测到PCID冲突之后，UE可以尽最大努力报告PCID冲突，可以向后退eNB报告，或者UE可以在上行链路信道上使用特殊资源。

6. 发明授权

US08768359B2 Sample selection for secondary synchronization signal (SSS) detection 有权
标题翻译：次同步信号（SSS）检测的采样选择
公开(公告)号：US08768359B2
公开(公告)日：2014-07-01
申请号：US13212812
申请日：2011-08-18
申请人： Tao Luo , Kapil Bhattad , Xiaoxia Zhang , Taesang Yoo , Xiliang Luo , Ke Liu
发明人： Tao Luo , Kapil Bhattad , Xiaoxia Zhang , Taesang Yoo , Xiliang Luo , Ke Liu
IPC分类号： H04W36/00 , H04B7/00
CPC分类号： H04W56/001 , H04J11/005 , H04J11/0069 , H04J11/0093 , H04W24/02 , H04W72/042
摘要： Methods and apparatus for selecting samples for secondary synchronization signal (SSS) detection are described. Several alternatives are provided for efficient cell identifier detection. In a first alternative, multiple bursts of a signal received from a cell are sampled with non-uniform spacing between sampling intervals to determine a sequence for cell identification. In a second alternative, samples of a first and a second signal received from a stronger cell are cancelled, and a sequence for detecting a weaker cell is determined by reducing effects of the samples of a third signal received from the weaker cell which do not overlap with the primary synchronization signal (PSS) or SSS of the stronger cell. In a third alternative, a sequence for detecting a weaker cell is determined by reducing effects of any sampled bursts that correspond to a high transmission power portion of a signal from a stronger cell.
摘要翻译：描述了用于选择二次同步信号（SSS）检测的样本的方法和装置。提供了多种替代方案用于高效的小区标识符检测。在第一替代方案中，从采样间隔之间以不均匀的间隔对从小区接收的信号的多个突发进行采样，以确定用于小区识别的序列。在第二替代方案中，从较强小区接收到的第一和第二信号的样本被取消，并且用于检测较弱小区的序列是通过减少从不重叠的较弱小区接收的第三信号的样本的影响来确定的具有较强小区的主同步信号（PSS）或SSS。在第三替代方案中，用于检测较弱小区的序列通过减少对应于来自较强小区的信号的高发射功率部分的任何采样突发的影响来确定。

7. 发明申请

US20120046056A1 SAMPLE SELECTION FOR SECONDARY SYNCHRONIZATION SIGNAL (SSS) DETECTION 有权
标题翻译：用于二次同步信号（SSS）检测的样本选择
公开(公告)号：US20120046056A1
公开(公告)日：2012-02-23
申请号：US13212812
申请日：2011-08-18
申请人： Tao Luo , Kapil Bhattad , Xiaoxia Zhang , Taesang Yoo , Xiliang Luo , Ke Liu
发明人： Tao Luo , Kapil Bhattad , Xiaoxia Zhang , Taesang Yoo , Xiliang Luo , Ke Liu
IPC分类号： H04B7/24
CPC分类号： H04W56/001 , H04J11/005 , H04J11/0069 , H04J11/0093 , H04W24/02 , H04W72/042
摘要： Methods and apparatus for selecting samples for secondary synchronization signal (SSS) detection are described. Several alternatives are provided for efficient cell identifier detection. In a first alternative, multiple bursts of a signal received from a cell are sampled with non-uniform spacing between sampling intervals to determine a sequence for cell identification. In a second alternative, samples of a first and a second signal received from a stronger cell are cancelled, and a sequence for detecting a weaker cell is determined by reducing effects of the samples of a third signal received from the weaker cell which do not overlap with the primary synchronization signal (PSS) or SSS of the stronger cell. In a third alternative, a sequence for detecting a weaker cell is determined by reducing effects of any sampled bursts that correspond to a high transmission power portion of a signal from a stronger cell.
摘要翻译：描述了用于选择二次同步信号（SSS）检测的样本的方法和装置。提供了多种替代方案用于高效的小区标识符检测。在第一替代方案中，从采样间隔之间以不均匀的间隔对从小区接收的信号的多个突发进行采样，以确定用于小区识别的序列。在第二替代方案中，从较强小区接收到的第一和第二信号的样本被取消，并且用于检测较弱小区的序列是通过减少从不重叠的较弱小区接收的第三信号的样本的影响来确定的具有较强小区的主同步信号（PSS）或SSS。在第三替代方案中，用于检测较弱小区的序列通过减少对应于来自较强小区的信号的高发射功率部分的任何采样突发的影响来确定。

8. 发明申请

US20120044928A1 DETERMINATION OF NETWORK SYNCHRONIZATION 有权
标题翻译：网络同步的确定
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。

9. 发明授权

US09178640B2 Determination of network synchronization 有权
标题翻译：确定网络同步
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
IPC分类号： H04W56/00 , H04J11/00 , H04B1/707 , H04L5/00 , H04W28/04 , H04W48/16 , H04W88/02
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。

10. 发明申请

US20110261673A1 MODIFIED SPATIAL DIVERSITY SCHEMES FOR COVERAGE ENHANCEMENT 有权
标题翻译：改进的空间多样性方案进行覆盖增强
公开(公告)号：US20110261673A1
公开(公告)日：2011-10-27
申请号：US13094669
申请日：2011-04-26
申请人： Tao Luo , Kapil Bhattad , Xiaoxia Zhang , Taesang Yoo , Ke Liu
发明人： Tao Luo , Kapil Bhattad , Xiaoxia Zhang , Taesang Yoo , Ke Liu
IPC分类号： H04W72/04 , H04W24/00
CPC分类号： H04J11/0053 , H04B7/0473 , H04J11/0033
摘要： In one aspect, a method to enhance coverage in a heterogeneous wireless network wireless communication is disclosed. The method includes generating a reference signal indicating a plurality of transmit antenna ports and generating modulation symbols. Modulation symbols are assigned to each of the plurality of transmit antenna ports, in accordance with a spatial diversity coding scheme for the plurality of transmit antenna ports. At least one of the modulation symbols assigned to at least one of the plurality of transmit antenna ports is muted prior to transmission in accordance with the spatial diversity coding scheme. The non-muted modulation symbols and the reference signal are transmitted on the other of the plurality of transmit antenna ports.
摘要翻译：一方面，公开了一种在异构无线网络无线通信中增强覆盖的方法。该方法包括产生指示多个发射天线端口并产生调制符号的参考信号。根据用于多个发射天线端口的空间分集编码方案，将调制符号分配给多个发射天线端口中的每一个。根据空间分集编码方案，分配给多个发送天线端口中的至少一个的调制符号中的至少一个在发送之前被静音。在多个发送天线端口中的另一个发送非静噪调制符号和参考信号。

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