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21. 发明授权

US09172561B2 Adaptive transmissions in coordinated multiple point communications 有权
标题翻译：协调多点通信中的自适应传输
公开(公告)号：US09172561B2
公开(公告)日：2015-10-27
申请号：US12842752
申请日：2010-07-23
申请人： Tao Luo , Durga Prasad Malladi , Xiaoxia Zhang , Yongbin Wei , Juan Montojo , Ke Liu
发明人： Tao Luo , Durga Prasad Malladi , Xiaoxia Zhang , Yongbin Wei , Juan Montojo , Ke Liu
IPC分类号： H04L12/26 , H04L25/02 , H04B7/02 , H04B7/04
CPC分类号： H04L25/0224 , H04B7/024 , H04B7/0417
摘要： Systems and methodologies are described that facilitate adaptively communicating data to wireless devices. An access point can precode a dedicated reference signal (DRS) for transmitting to a wireless device, and the wireless device can receive the precoded DRS. The wireless device can determine the precoder by estimating a channel of the DRS and can provide channel condition feedback to the access point. The access point can create data signals including a single or a burst of data transmissions according to the feedback and can precode the data signals using the same precoder. The wireless device can additionally decode the data signals using the precoder. Moreover, the access point can cycle through precoders according to a patterned, random, pseudo-random, and/or similar sequence.
摘要翻译：描述了促进将数据自适应地传送到无线设备的系统和方法。接入点可以对专用参考信号（DRS）进行预编码，以发送到无线设备，并且无线设备可以接收预编码的DRS。无线设备可以通过估计DRS的信道来确定预编码器，并且可以向接入点提供信道条件反馈。接入点可以根据反馈创建数据信号，包括数据传输的单个或突发，并且可以使用相同的预编码器来对数据信号进行预编码。无线设备可以使用预编码器来附加地解码数据信号。此外，接入点可以根据图案化，随机，伪随机和/或类似的顺序循环穿过预编码器。

22. 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。

23. 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。

24. 发明授权

US08582516B2 Reference signaling for a high-mobility wireless communication device 有权
标题翻译：高移动性无线通信设备的参考信令
公开(公告)号：US08582516B2
公开(公告)日：2013-11-12
申请号：US12941704
申请日：2010-11-08
申请人： Wanshi Chen , Tao Luo , Juan Montojo , Xiaoxia Zhang
发明人： Wanshi Chen , Tao Luo , Juan Montojo , Xiaoxia Zhang
IPC分类号： H04W4/00 , H04B7/00
CPC分类号： H04B7/02 , H04L5/0051 , H04L5/0058 , H04L5/0094 , H04L27/2613
摘要： A base station for enabling communication with a high-mobility wireless communication device is described. The base station includes a processor and instructions stored in memory. The base station identifies a high-mobility wireless communication device and sends a reference signal configuration. The base station also allocates an additional specific reference signal and sends the additional specific reference signal to the high-mobility wireless communication device.
摘要翻译：描述了用于实现与高移动性无线通信设备的通信的基站。基站包括处理器和存储在存储器中的指令。基站识别高移动性无线通信设备并发送参考信号配置。基站还分配附加的特定参考信号，并将附加的特定参考信号发送到高移动性无线通信设备。

25. 发明授权

US08442069B2 System and method to enable uplink control for restricted association networks 有权
标题翻译：用于限制关联网络的上行链路控制的系统和方法
公开(公告)号：US08442069B2
公开(公告)日：2013-05-14
申请号：US12419831
申请日：2009-04-07
申请人： Tingfang Ji , Tao Luo , Xiaoxia Zhang
发明人： Tingfang Ji , Tao Luo , Xiaoxia Zhang
IPC分类号： H04J3/16
CPC分类号： H04W72/082 , H04W16/12 , H04W84/045
摘要： Systems and methodologies are described that facilitate resource management in a wireless communication system. Various techniques described herein can enable a network cell in a wireless communication system (e.g. a macro cell) to mitigate the effects of interference on other surrounding network cells (e.g., femto cells embedded within the coverage of the macro cell). For example, a network cell can allocate control resources that overlap control resources of a nearby cell and assign resources within the region of overlap only to users that will not cause substantial interference to the nearby cell. As another example, a network cell can utilize a control channelization that partially coincides with a control and/or random access channelization of a nearby cell. The network cell can subsequently elect not to use the control resources in the coinciding region in order to enable the nearby cell to control the effects of interference though data scheduling.
摘要翻译：描述了促进无线通信系统中的资源管理的系统和方法。本文描述的各种技术可以使得无线通信系统（例如，宏小区）中的网络小区能够减轻对其他周围网络小区（例如，嵌入在宏小区的覆盖范围内的毫微微小区）的干扰的影响。例如，网络小区可以分配与附近小区的控制资源重叠的控制资源，并且在重叠区域内的资源仅分配给不会对附近小区造成实质干扰的用户。作为另一示例，网络小区可以利用与附近小区的控制和/或随机接入信道化部分重合的控制信道化。网络小区随后可以选择不使用重合区域中的控制资源，以使附近小区能够通过数据调度来控制干扰的影响。

26. 发明授权

US08374109B2 Methods of sending control information for users sharing the same resource 有权
标题翻译：为共享同一资源的用户发送控制信息的方法
公开(公告)号：US08374109B2
公开(公告)日：2013-02-12
申请号：US12412190
申请日：2009-03-26
申请人： Tao Luo , Juan Montojo , Peter Gaal , Sandip Sarkar , Xiaoxia Zhang
发明人： Tao Luo , Juan Montojo , Peter Gaal , Sandip Sarkar , Xiaoxia Zhang
IPC分类号： H04B7/00
CPC分类号： H04W72/042 , H04L5/0007 , H04L5/0053 , H04L5/0064 , H04L5/0091 , H04W72/046
摘要： Certain aspects of the present disclosure relate to a method for sending control information to multiple user terminals that share the same resources in a Spatial Division Multiple Access (SDMA) wireless system. The control information can be transmitted from an access point over a physical downlink control channel (PDCCH) that is common for a plurality of user terminals. The overall PDCCH overhead can thus be reduced due to a smaller number of required PDCCH in the SDMA wireless system.
摘要翻译：本公开的某些方面涉及用于向在空分多址（SDMA）无线系统中共享相同资源的多个用户终端发送控制信息的方法。控制信息可以通过对于多个用户终端公用的物理下行链路控制信道（PDCCH）从接入点发送。由于SDMA无线系统中所需的PDCCH数量较少，因此可以减少总体PDCCH开销。

27. 发明授权

US08265642B2 Systems, apparatus and methods for physical random access channel processing 失效
标题翻译：用于物理随机接入信道处理的系统，装置和方法
公开(公告)号：US08265642B2
公开(公告)日：2012-09-11
申请号：US12816305
申请日：2010-06-15
申请人： Xiaoxia Zhang , Durga Prasad Malladi , Yongbin Wei , Hao Xu , Tao Luo
发明人： Xiaoxia Zhang , Durga Prasad Malladi , Yongbin Wei , Hao Xu , Tao Luo
IPC分类号： H04W72/00
CPC分类号： H04W74/008 , H04W74/004 , H04W74/0833
摘要： Systems and methods for processing a physical random access channel are provided. In some embodiments, a method can include: receiving a signal indicative of a strong user and a desired user on a physical random access channel; performing at least one of a single segment frequency domain detection or a multi-segment frequency domain detection on the signal indicative of a strong user and a desired user; generating a residual signal by cancelling out the signal indicative of a strong user; and obtaining a message transmitted by a user equipment by performing at least one of the single segment frequency domain detection or multi-segment frequency domain detection on the residual signal.
摘要翻译：提供了用于处理物理随机访问信道的系统和方法。在一些实施例中，方法可以包括：在物理随机接入信道上接收指示强用户和期望用户的信号; 对指示强用户和期望用户的信号执行单段频域检测或多段频域检测中的至少一个; 通过取消指示强用户的信号来产生残差信号; 以及通过对残差信号进行单段频域检测或多段频域检测中的至少一个来获得由用户设备发送的消息。

28. 发明申请

US20120182946A1 RATE MATCHING FOR COORDINATED MULTIPOINT TRANSMISSION SCHEMES 审中-公开
标题翻译：协调多点传输方案的速率匹配
公开(公告)号：US20120182946A1
公开(公告)日：2012-07-19
申请号：US13351156
申请日：2012-01-16
申请人： Wanshi Chen , Kapil Bhattad , Peter Gaal , Tao Luo , Xiaoxia Zhang
发明人： Wanshi Chen , Kapil Bhattad , Peter Gaal , Tao Luo , Xiaoxia Zhang
IPC分类号： H04W72/04
CPC分类号： H04L5/0032 , H04L5/0035 , H04L5/0044 , H04L5/0058 , H04L5/0092
摘要： Certain aspects of the present disclosure relate to techniques for determining resource elements REs used for Coordinated Multipoint (CoMP) transmission schemes. The techniques generally include determining, by a User Equipment (UE), a set of data REs used for Coordinated Multipoint (CoMP) operation. The determination is based on a CoMP scheme and data REs available to particular base stations involved in the CoMP operation. The technique further includes processing data received via the CoMP operation on the determined set of data REs.
摘要翻译：本公开的某些方面涉及用于确定用于协调多点（CoMP）传输方案的资源元素RE的技术。技术通常包括由用户设备（UE）确定用于协调多点（CoMP）操作的一组数据RE。该确定基于CoMP方案和参与CoMP操作的特定基站可用的数据RE。该技术还包括处理经由所确定的数据RE集合经由CoMP操作接收的数据。

29. 发明申请

US20120076213A1 INTERFERENCE CANCELATION USING EDGE SIGNALS FOR SYNCHRONIZATION SIGNAL DETECTION 有权
标题翻译：干扰消除使用边缘信号进行同步信号检测
公开(公告)号：US20120076213A1
公开(公告)日：2012-03-29
申请号：US13077685
申请日：2011-03-31
申请人： Xiaoxia Zhang , Tao Luo
发明人： Xiaoxia Zhang , Tao Luo
IPC分类号： H04L27/00 , H04B15/00 , H04B7/26
CPC分类号： H04L27/2662 , H04J11/0056 , H04J11/0069 , H04L5/0023 , H04L5/0048
摘要： In 3GPP Release (Rel) 8, a primary synchronization signal (PSS) and a secondary synchronization signal (SSS) may be transmitted in six resource blocks, occupying, for example, the center 62 tones (i.e., subcarriers) of an LTE-A system, wherein the center tone may be skipped. In synchronous networks, cells may transmit their respective PSS and SSS on the same frequency at the same time, wherein strong cells may overshadow the weak ones. However, strong cells may not be the serving cell for a user equipment (UE), particularly in a heterogeneous network. Traditionally, interference cancelation, an enhanced receiver technique, has been used, wherein the UE may first find the strong cells and cancel them out to find the serving cell. However, due to propagation delay and synchronization uncertainty, a timing offset may exist among cells, even in synchronous networks. Therefore, systems and methods are disclosed, providing for improved handling of the timing offset among different cells by applying a time domain cancelation.
摘要翻译：在3GPP Release（Rel）8中，可以在六个资源块中发送主同步信号（PSS）和次同步信号（SSS），占用例如LTE-A的中心62个音调（即，子载波）系统，其中可以跳过中心音。在同步网络中，小区可以同时在相同的频率上传送它们各自的PSS和SSS，其中强的小区可以遮蔽弱的小区。然而，强小区可能不是用户设备（UE）的服务小区，特别是在异构网络中。传统上，已经使用干扰消除，增强的接收机技术，其中，UE可以首先找到强小区并将其消除以找到服务小区。然而，由于传播延迟和同步不确定性，即使在同步网络中，也可能在单元之间存在定时偏移。因此，公开了系统和方法，通过应用时域消除来提供不同小区之间的定时偏移的改进处理。

30. 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。

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