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公开(公告)号：US20110039497A1
公开(公告)日：2011-02-17
申请号：US12988671
申请日：2009-02-27
申请人： David Hammarwall , George Jongren
发明人： David Hammarwall , George Jongren
IPC分类号： H04B1/00
CPC分类号： H04B7/04 , H01Q1/246 , H01Q3/2682 , H04B17/364
摘要： In a first aspect the present invention relates to a method of compensating for propagation delay in a wireless communication system. A first base station is in communication with a first plurality of antenna units which are adapted to be in wireless communication with a first terminal. The first terminal having a terminal antenna. The first plurality of antenna units is spatially separated. The method according to the first aspect comprises the steps of determining relative propagation delay from each of the first plurality of antenna units to the terminal antenna and using the determined propagation delay to establish a delay profile to compensate for propagation delay from each of the antenna units to the first terminal and applying the delay profile to a transmission between the base station and the terminal. In a second aspect the present invention further relates to a system implementing the method according to the first aspect.
摘要翻译： 在第一方面，本发明涉及一种在无线通信系统中补偿传播延迟的方法。 第一基站与适于与第一终端进行无线通信的第一多个天线单元通信。 第一终端具有终端天线。 第一多个天线单元在空间上分离。 根据第一方面的方法包括以下步骤：确定从第一多个天线单元中的每一个到终端天线的相对传播延迟，并且使用确定的传播延迟来建立延迟分布以补偿来自每个天线单元的传播延迟 并且将延迟分布应用于基站和终端之间的传输。 在第二方面，本发明还涉及实现根据第一方面的方法的系统。
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62.发明授权公开(公告)号：US10135595B2
公开(公告)日：2018-11-20
申请号：US13163151
申请日：2011-06-17
摘要： A system and method to instruct a User Equipment (UE) how Uplink Control Information (UCI) on a Physical Uplink Shared Channel (PUSCH) should be transmitted with carrier aggregation. A semi-static signaling of a UCI mapping bit (via a Radio Resource Control (RRC) parameter) is used by a base station such as an eNodeB to require the UE to transmit UCI using one of two pre-determined UCI transmission modes. The bit can be decided by the base station, considering, for example, the available bandwidth or quality of different Uplink Component Carriers (UL CCs) associated with the UE. This network-based solution allows the network to either configure a general rule of UCI transmission by the UE or to enforce the UCI transmission on the Uplink Primary cell (UL Pcell). Because of the rules governing abstracts, this abstract should not be used to construe the claims.
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公开(公告)号：US10014920B2
公开(公告)日：2018-07-03
申请号：US14427255
申请日：2012-09-12
CPC分类号： H04B7/0617 , H04B7/024 , H04B7/0695 , H04L5/0048 , H04W24/10 , H04W72/042
摘要： A method in a network node for selecting a beam candidate in a wireless communication network, including acquiring information including information indicative of signal qualities for multiple beam candidates; assigning to each of the multiple beam candidates a factor indicating signal interference generated by the corresponding beam candidate and selecting a beam candidate taking into account at least the associated signal quality and the factor assigned to the selected beam candidate.
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公开(公告)号：US09331386B2
公开(公告)日：2016-05-03
申请号：US13520251
申请日：2012-06-08
CPC分类号： H01Q3/00 , H04B7/0417 , H04B7/0469 , H04B7/0617 , H04B7/0626 , H04B7/0632
摘要： Some example embodiments presented herein are directed towards an eNodeB, and corresponding method therein, for establishing beamforming for downlink communications in a multiple antenna system. The eNodeB may transmit a plurality of reference signals, where each reference signal is beamformed into a distinct direction with in at least one correlated domain (e.g., an elevation and/or azimuth domain). The eNodeB may generate beamformed downlink communications for antenna elements and/or subelements based on received signal quality assessments of the plurality of reference signals. Some example embodiments may be directed towards a user equipment, and corresponding methods therein, for establishing beamforming for downlink communications. The user equipment may receive the plurality of reference signals and provide signal assessments of the reference signals based on measurements performed by the user equipment. The user equipment may transmit the signal quality assessments to the eNodeB and receive beamformed downlink communications based on the signal quality assessments.
摘要翻译： 本文呈现的一些示例性实施例针对eNodeB，以及其中的相应方法，用于建立用于多天线系统中的下行链路通信的波束成形。 eNodeB可以发送多个参考信号，其中每个参考信号在至少一个相关域（例如，高程和/或方位域）中被波束形成为不同的方向。 基于多个参考信号的接收信号质量评估，eNodeB可以为天线元件和/或子元件生成波束形成的下行链路通信。 一些示例实施例可以针对用于用于下行链路通信的建立波束形成的用户设备及其中的相应方法。 用户设备可以基于用户设备执行的测量来接收多个参考信号并提供参考信号的信号评估。 用户设备可以将信号质量评估传送到eNodeB，并且基于信号质量评估来接收波束形成的下行链路通信。
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公开(公告)号：US09204317B2
公开(公告)日：2015-12-01
申请号：US13469843
申请日：2012-05-11
申请人： David Hammarwall , Svante Bergman
发明人： David Hammarwall , Svante Bergman
IPC分类号： H04L12/26 , H04W24/02 , H04B7/04 , H04B7/06 , H04L1/00 , H04L25/02 , H04L25/03 , H04L5/00 , H04W52/16 , H04W52/32
CPC分类号： H04B7/0626 , H04B7/0456 , H04B7/0617 , H04B7/0619 , H04B7/063 , H04B7/0639 , H04L1/0026 , H04L5/0026 , H04L5/0035 , H04L5/005 , H04L5/0057 , H04L25/0224 , H04L25/03949 , H04W24/02 , H04W24/10 , H04W52/16 , H04W52/325
摘要： Some embodiments provide a method in a wireless device for reporting channel state information, CSI, for a CSI process. The CSI process corresponds to a reference signal resource and an interference measurement resource. According to the method, the wireless device obtains an adjustment value associated with the CSI process. The wireless device estimates an effective channel based on one or more reference signals received in the reference signal resource, and applies the adjustment value to the estimated effective channel, thereby obtaining an adjusted effective channel. Furthermore, the wireless device determines channel state information based on the adjusted effective channel, and on interference estimated based on the interference measurement resource. Finally, the channel state information is transmitted to a network node.
摘要翻译： 一些实施例提供了一种无线设备中用于为CSI过程报告信道状态信息CSI的方法。 CSI过程对应于参考信号资源和干扰测量资源。 根据该方法，无线设备获得与CSI进程相关联的调整值。 无线设备基于在参考信号资源中接收的一个或多个参考信号估计有效信道，并将调整值应用于估计的有效信道，由此获得调整的有效信道。 此外，无线设备基于调整的有效信道以及基于干扰测量资源估计的干扰来确定信道状态信息。 最后，将信道状态信息发送到网络节点。
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公开(公告)号：US20150200755A1
公开(公告)日：2015-07-16
申请号：US14409153
申请日：2012-07-03
IPC分类号： H04L5/00
CPC分类号： H04L5/0048 , H04B7/024 , H04B7/0626 , H04L5/0023 , H04L5/0035 , H04L5/0057 , H04L5/0062
摘要： There is disclosed a method of obtaining channel state information, CSI, with respect to a plurality of coordinated antennas. The method is performed in a control node. The Start method comprises transmitting, by said plurality of antennas, according to different CSI-RS transmit configurations and at different points in time, channel state information reference symbols, CSI-RS. At a first time instance a CSI report from at least one user equipment, UE, is received. Based on the CSI report being received at said first time instance, said received CSI report is associated with a specific CSI-RS transmit configuration of the different CSI-RS transmit configurations. A control node and a computer program are also disclosed.
摘要翻译： 公开了相对于多个协调天线获得信道状态信息CSI的方法。 该方法在控制节点中执行。 所述Start方法包括根据不同的CSI-RS发送配置和在不同的时间点，由所述多个天线发送信道状态信息参考符号CSI-RS。 在第一时间实例中，接收来自至少一个用户设备UE的CSI报告。 基于在所述第一时间接收到的CSI报告，所述接收到的CSI报告与不同的CSI-RS发送配置的特定CSI-RS发送配置相关联。 还公开了控制节点和计算机程序。
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公开(公告)号：US08831125B2
公开(公告)日：2014-09-09
申请号：US13520294
申请日：2012-06-08
IPC分类号： H04B7/02
CPC分类号： H01Q3/00 , H04B7/0417 , H04B7/0469 , H04B7/0617 , H04B7/0626 , H04B7/0632
摘要： Some of the example embodiments presented herein are directed towards an eNodeB (401), and corresponding method therein, for providing data transmission in a multiple antenna system. The eNodeB (401) may be configured to receive a plurality of signal quality assessments and a CSI report from a user equipment. Based on the received data the eNodeB (401) may determine a received power difference between the received data. The eNodeB (401) may further determine a beamforming direction for subsequent data transmissions. Based on the power difference, the eNodeB (401) may account for the received power difference in the subsequent data transmissions, thus improving data communications towards the user equipment.
摘要翻译： 这里呈现的一些示例性实施例针对eNodeB（401）及其中的相应方法，用于在多天线系统中提供数据传输。 eNodeB（401）可以被配置为从用户设备接收多个信号质量评估和CSI报告。 基于接收的数据，eNodeB（401）可以确定所接收的数据之间的接收功率差。 eNodeB（401）还可以确定用于后续数据传输的波束形成方向。 基于功率差异，eNodeB（401）可以考虑后续数据传输中的接收功率差异，从而改善到用户设备的数据通信。
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公开(公告)号：US08798550B2
公开(公告)日：2014-08-05
申请号：US13469809
申请日：2012-05-11
申请人： David Hammarwall , Svante Bergman
发明人： David Hammarwall , Svante Bergman
IPC分类号： H04B17/00
CPC分类号： H04B7/0456 , H04B7/063 , H04B7/0639 , H04J11/0053 , H04L1/0026 , H04L1/06 , H04L1/1671 , H04L5/0057
摘要： Some embodiments provide a method in a wireless device for reporting channel state information, CSI, for a CSI process. The CSI process corresponds to a reference signal resource and an associated interference measurement resource, IMR. According to the method, the wireless device obtains an interference power adjustment value. The wireless device estimates interference and noise based on the IMR, and on the interference power adjustment value. Furthermore, the wireless device determines channel state information based on an estimated effective channel measured based on the reference signal resource, and on the estimated interference and noise. Finally, the wireless device transmits the channel state information to a network node.
摘要翻译： 一些实施例提供了一种无线设备中用于为CSI过程报告信道状态信息CSI的方法。 CSI过程对应于参考信号资源和相关联的干扰测量资源IMR。 根据该方法，无线装置获得干扰功率调整值。 无线设备基于IMR估计干扰和噪声以及干扰功率调整值。 此外，无线设备基于基于参考信号资源测量的估计有效信道以及估计的干扰和噪声来确定信道状态信息。 最后，无线设备向网络节点发送信道状态信息。
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公开(公告)号：US08744468B2
公开(公告)日：2014-06-03
申请号：US13640337
申请日：2012-07-30
申请人： Stefan Parkvall , David Astely , Erik Dahlman , David Hammarwall , Bengt Lindoff , Stefano Sorrentino , Leif Wilhelmsson
发明人： Stefan Parkvall , David Astely , Erik Dahlman , David Hammarwall , Bengt Lindoff , Stefano Sorrentino , Leif Wilhelmsson
IPC分类号： H04W72/04
CPC分类号： H04W72/1231 , H04W52/143 , H04W52/244 , H04W72/0446 , Y02D70/00
摘要： In a heterogeneous cell deployment a mobile terminal may need to receive control data transmissions from a macro node at the same time as a pico node is transmitting user data for the mobile terminal, using the same frequency or set of frequencies. This can result in a problematic interference situation. According to several embodiments of the present invention, at least one of two general approaches is used to mitigate the interference situation described above. In a first approach, the pico node's transmission power is reduced in some time intervals, thereby reducing the interference to a level where reception from the macro node is possible. In a second approach, which may be combined with the first approach in some cases, the data transmitted from the macro node is provided by the pico node, either alone or in combination with the macro node.
摘要翻译： 在异构小区部署中，移动终端可能需要在微微节点正在使用相同的频率或频率集合为移动终端发送用户数据的同时从宏节点接收控制数据传输。 这可能导致有问题的干扰情况。 根据本发明的几个实施例，使用两种一般方法中的至少一种来减轻上述干扰情况。 在第一种方法中，微微节点的传输功率在一些时间间隔内减小，从而将干扰降低到可能从宏节点接收的水平。 在一些可能与第一种方法组合的第二种方法中，从宏节点发送的数据由微微节点单独提供，或与宏节点组合。
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70.发明申请Methods Providing Precoder Feedback Using Multiple Precoder Indices and Related Communications Devices and Systems 有权使用多个预编码器指示和相关通信设备和系统提供预编码器反馈的方法公开(公告)号：US20110305263A1
公开(公告)日：2011-12-15
申请号：US12973096
申请日：2010-12-20
CPC分类号： H04B7/0617 , H04B7/0639 , H04B7/065 , H04B7/0663
摘要： Data may be transmitted from a first communications device using multiple antennas to a second communications device based on precoder feedback defining a grid of transmission beams. A first precoder index may be received from the second communications device, and a second precoder index may be received from the second communications device. At least one symbol stream may be processed based at least in part on the first and second precoder indices to generate antenna signals for respective antenna elements of the multiple antennas, and the antenna signals may be transmitted over the multiple antennas to the communications device. Related base stations and user equipment are also discussed.
摘要翻译： 可以基于定义传输波束网格的预编码器反馈从多个天线的第一通信设备向第二通信设备发送数据。 可以从第二通信设备接收第一预编码器索引，并且可以从第二通信设备接收第二预编码器索引。 可以至少部分地基于第一和第二预编码器索引来处理至少一个符号流，以生成多个天线中的各个天线元件的天线信号，并且天线信号可以通过多个天线发送到通信设备。 还讨论了相关基站和用户设备。
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