专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

91. 发明申请

US20090274234A1 USING COVARIANCE MATRICES FOR LINK SELECTION IN MIMO COMMUNICATION SYSTEM 有权
标题翻译：使用MIMO通信系统中的链路选择的协变矩阵
公开(公告)号：US20090274234A1
公开(公告)日：2009-11-05
申请号：US12306132
申请日：2006-10-04
申请人： David Astely , Bo Göransson , Per Skillermark
发明人： David Astely , Bo Göransson , Per Skillermark
IPC分类号： H04B7/02
CPC分类号： H04B7/0626 , H04B7/043 , H04B7/0617 , H04B7/0684 , H04L1/20
摘要： A method of selecting at least one communication link in a wireless communication network is proposed, comprising the steps of transmitting from at least one transmitting node in the network a pilot signal from each of at least two transmitter antennas of the transmitting node, receiving the pilot signals from the at least two transmitter antennas in a receiving terminal, estimating, in the terminal, a covariance matrix of the channel, based on the pilot signals received, determining the pathloss for each antenna based on the covariance matrix, selecting one of at least two possible links for the communication between the terminal and the transmitting nodes. The terminal is enabled to measure on each transmitter antenna individually, which provides a better tool for link selection and cell selection.
摘要翻译：提出了一种在无线通信网络中选择至少一个通信链路的方法，包括以下步骤：从网络中的至少一个发射节点发送来自发射节点的至少两个发射机天线中的每一个的导频信号，接收导频来自接收终端中的至少两个发射机天线的信号，基于所接收的导频信号在终端中估计信道的协方差矩阵，基于协方差矩阵确定每个天线的路径损耗，至少选择一个用于终端和发射节点之间的通信的两个可能的链路。终端可以单独测量每个发射机天线，为链路选择和小区选择提供了更好的工具。

92. 发明授权

US07406336B2 Method for determining transmit weights 有权
标题翻译：确定发射权重的方法
公开(公告)号：US07406336B2
公开(公告)日：2008-07-29
申请号：US10596688
申请日：2003-12-22
申请人： David Astely , Peter Larsson
发明人： David Astely , Peter Larsson
IPC分类号： H04M1/00 , H04B1/02
CPC分类号： H04B7/0632 , H04B7/0617 , H04L1/0026 , H04L27/261 , H04L27/2626
摘要： The present invention relates to beamforming in a multi-carrier multi-user communication system applying an adaptive method for determining transmit weights for the various antenna beams. A set of complex transmission weights is adapted in response to appropriate feedback information on transmission quality from receiving units in order to achieve a maximization of a function of said quality indicator and thus optimize the transmission of the pilot signal.
摘要翻译：本发明涉及多载波多用户通信系统中的波束成形，其应用用于确定各种天线波束的发射权重的自适应方法。响应于来自接收单元的传输质量的适当反馈信息来适配一组复传输权重，以便实现所述质量指示符的功能的最大化，并且因此优化导频信号的传输。

93. 发明申请

US20070047552A1 Measurement method for spatial scheduling 审中-公开
标题翻译：空间调度测量方法
公开(公告)号：US20070047552A1
公开(公告)日：2007-03-01
申请号：US10596707
申请日：2003-12-22
申请人： David Astely
发明人： David Astely
IPC分类号： H04L12/56
CPC分类号： H04W52/346 , H04B7/0619
摘要： The present invention relates to methods in a communication system providing the steps of determining a set of spatial transport formats, and signalling a selected active set of transport formats to one or several mobile terminals. The transport formats are adjustable by means of adapting the parameters of their complex transmission weights and/or their transmission power by evaluating collected channel management information, e.g. feedback information received from the mobile terminals, in order to optimise the aggregate data throughput subject to quality and fairness requirements. Further the present invention allows to evaluate a plurality of feedback information received from the various mobile terminals, determining applicable data rates for each of the data streams associated to the transport formats, determining from said evaluation a scheduling scheme for scheduling data streams to said mobile terminals, and assigning applicable data rates to each of said scheduled data streams.
摘要翻译：本发明涉及通信系统中的方法，该通信系统提供了确定一组空间传输格式的步骤，以及向一个或多个移动终端发送所选择的传输格式的有效集合。传输格式可以通过调整其复杂传输权重的参数和/或其传输功率来评估所收集的信道管理信息，例如，从移动终端收到的反馈信息，以便根据质量和公平性要求优化聚合数据吞吐量。此外，本发明允许评估从各种移动终端接收的多个反馈信息，确定与传输格式相关联的每个数据流的适用数据速率，从所述评估中确定用于将数据流调度到所述移动终端的调度方案并且将适用的数据速率分配给每个所述调度的数据流。

94. 发明申请

US20050101352A1 Method and apparatus for a multi-beam antenna system 有权
标题翻译：多波束天线系统的方法和装置
公开(公告)号：US20050101352A1
公开(公告)日：2005-05-12
申请号：US10704158
申请日：2003-11-10
申请人： Andrew Logothetis , David Astely
发明人： Andrew Logothetis , David Astely
IPC分类号： H01Q1/24 , H01Q3/26 , H01Q3/40 , H01Q25/00 , H04B7/06 , H04M1/00
CPC分类号： H01Q3/2605 , H01Q1/246 , H01Q3/40 , H01Q25/002
摘要： An antenna array in a radio node includes multiple antenna elements for transmitting a wider beam covering a majority of a sector cell that includes a common signal and a narrower beam covering only a part of the sector cell that includes a mobile user-specific signal. Transmitting circuitry is coupled to the antenna array, and processing circuitry is coupled to the transmitting circuitry. The processing circuitry ensures the user-specific signal and the common signal in a mixed beam embodiment are in-phase and time-aligned at the antenna array. In a steered beam embodiment, the processing circuitry ensures the user-specific signal and the common signal are time-aligned and have a controlled phase difference when received at mobile stations in the sector cell. In both embodiments, distortions in the common signal and the user-specific signal associated with their conversion from baseband frequency to radio frequency are also compensated. And in the steered beam embodiment, beam forming weights are used not only to radiate a narrower beam to the desired mobile user but also to direct a wider common signal beam to reach all mobile users in the cell.
摘要翻译：无线电节点中的天线阵列包括多个天线元件，用于发射覆盖包括公共信号的扇区小区的大部分的较宽波束，以及仅覆盖包括移动用户专用信号的扇区小区的一部分的较窄波束。发射电路耦合到天线阵列，并且处理电路耦合到发射电路。处理电路确保混合波束实施例中的用户特定信号和公共信号在天线阵列处是同相和时间对准的。在转向光束实施例中，处理电路确保用户特定信号和公共信号是时间对准的，并且在扇区小区中的移动台处接收时具有受控的相位差。在这两个实施例中，公共信号的失真以及与从基带频率到射频的转换相关联的用户特定信号也被补偿。并且在转向束实施例中，波束形成权重不仅用于将较窄的波束辐射到期望的移动用户，而且还用于引导较宽的公共信号波束以到达小区中的所有移动用户。

95. 发明授权

US09699765B2 Methods and nodes for setting values of system parameters used in a wireless communication system 有权
公开(公告)号：US09699765B2
公开(公告)日：2017-07-04
申请号：US13993474
申请日：2010-12-20
申请人： Mats Sågfors , David Astely , Stefan Parkvall , Riikka Susitaival
发明人： Mats Sågfors , David Astely , Stefan Parkvall , Riikka Susitaival
IPC分类号： H04W72/02 , H04W48/12 , H04W8/18 , H04W28/06
CPC分类号： H04W8/183 , H04W28/06 , H04W48/12 , H04W72/02
摘要： Method in a user equipment (120), a user equipment (120), a method in a base station (110) and a base station (110) for setting values of system parameters used within a wireless communication system (100). A first set of parameter values and an associated first tag is sent from the base station (110) to be received and stored by the user equipment (120). Further, a second set of parameter values and an associated second tag is sent from the base station (110) to be received and stored by the user equipment (120). When the base station (110) determine to change system information parameters, a command tag is sent, to be received by the user equipment (120), which apply the set of parameter values associated with the tag corresponding to the received command tag.

96. 发明授权

US09426753B2 Radio network node, user equipment and methods therein 有权
标题翻译：无线网络节点，用户设备及其中的方法
公开(公告)号：US09426753B2
公开(公告)日：2016-08-23
申请号：US14397711
申请日：2012-05-03
申请人： Erik Eriksson , David Astely
发明人： Erik Eriksson , David Astely
IPC分类号： H04B7/00 , H04W52/14 , H04W52/22 , H04W52/38 , H04W52/24
CPC分类号： H04W52/146 , H04W52/226 , H04W52/242 , H04W52/243 , H04W52/386 , H04W72/0446 , H04W72/0473
摘要： Some embodiments herein relate to method in a user equipment (10) for determining a transmit power to be used by the user equipment when transmitting in a radio communications network, which user equipment (10) is served by a radio network node (12,12′) in the radio communications network. The user equipment (10) receives, from the radio network node (12,12′), an indication indicating a set of power control parameters out of multiple sets of power control parameters, which multiple sets of power control parameters are stored at the user equipment (10). The user equipment (10) determines a transmit power based on the indicated set of power control parameters.
摘要翻译：本文中的一些实施例涉及在用户设备（10）中用于确定在无线电通信网络中发送时由用户设备使用的发射功率的方法，哪个用户设备（10）被无线电网络节点（12,12 '）在无线电通信网络中。用户设备（10）从无线电网络节点（12,12'）接收指示多组功率控制参数中的一组功率控制参数的指示，多组功率控制参数存储在用户设备（10）。用户设备（10）基于所指示的一组功率控制参数确定发射功率。

97. 发明申请

US20150085769A1 TECHNIQUE FOR OPERATING A NETWORK NODE IN A HETEROGENEOUSLY DEPLOYED NETWORK 有权
标题翻译：在异构网络中操作网络节点的技术
公开(公告)号：US20150085769A1
公开(公告)日：2015-03-26
申请号：US14385954
申请日：2012-03-21
申请人： Stefan Parkvall , David Astely , Erik Dahlman , Pal Frenger
发明人： Stefan Parkvall , David Astely , Erik Dahlman , Pal Frenger
IPC分类号： H04W52/18
CPC分类号： H04W52/18 , H04W16/32 , H04W24/02 , H04W48/12 , H04W84/045
摘要： A technique for operating a network node in a heterogeneously deployed network comprising network nodes of different nominal transmit powers and at least partially overlapping coverage areas is described. A method implementation of this technique comprises a step of operating the network node in a base mode in which the network node is configured to transmit terminal-specific demodulation reference signals for a first set of terminal devices. The method comprises the further step of selectively activating or deactivating operation of the network node in a Single Frequency Network (SFN) mode in which the network node is configured to transmit, for a second set of terminal devices, the same cell-specific reference nodes as another network node of the heterogeneously deployed network that has a larger nominal transmit power.
摘要翻译：描述了在包括具有不同标称发射功率和至少部分重叠覆盖区域的网络节点的异构部署网络中操作网络节点的技术。该技术的方法实现包括以基本模式操作网络节点的步骤，其中网络节点被配置为发送用于第一组终端设备的终端特定解调参考信号。该方法包括以单频网络（SFN）模式选择性地激活或去激活网络节点的操作的步骤，其中网络节点被配置为针对第二组终端设备向相同的小区特定参考节点作为具有较大额定发射功率的异构部署网络的另一网络节点。

98. 发明授权

US08780798B2 Method and devices for providing enhanced signaling 有权
标题翻译：用于提供增强信令的方法和设备
公开(公告)号：US08780798B2
公开(公告)日：2014-07-15
申请号：US12990404
申请日：2008-02-05
申请人： Stefan Parkvall , Ylva Jading , Erik Dahlman , David Astely
发明人： Stefan Parkvall , Ylva Jading , Erik Dahlman , David Astely
IPC分类号： H04W4/20
CPC分类号： H04W4/20 , H04J11/0069 , H04L5/0007 , H04L5/0053
摘要： Methods and devices for introducing enhanced signals into a wireless environment. The enhanced signals provide for functionality that is not specified in a communication standard corresponding to a standard of a legacy terminal. The enhanced signals can be utilized by a non-legacy terminal. The legacy terminal is incapable of processing the enhanced signals and is unable to detect the presence of the enhanced signals.
摘要翻译：将增强信号引入无线环境的方法和设备。增强信号提供在对应于传统终端的标准的通信标准中未指定的功能。增强信号可以由非传统终端利用。遗留终端不能处理增强的信号，并且不能检测出增强的信号的存在。

99. 发明授权

US08767697B2 TDD time slot splitting 有权
标题翻译： TDD时隙分割
公开(公告)号：US08767697B2
公开(公告)日：2014-07-01
申请号：US13188493
申请日：2011-07-22
申请人： David Astely , Stefan Parkvall , Per Johan Anders Nystrom
发明人： David Astely , Stefan Parkvall , Per Johan Anders Nystrom
IPC分类号： H04W4/00
CPC分类号： H04M9/025 , H04B7/2656 , H04L5/14 , H04W72/04 , H04W72/1263
摘要： The invention discloses a method for a cellular communications system, in which traffic is sent in frames, each frame comprising a first number of subframes, with a second number of said subframes being available for at least either uplink or downlink traffic. At least one of said second number of subframes is made to comprise at least three parts, as follows: One part which is utilized for uplink traffic, One part which is utilized for downlink traffic, One part which is utilized as a guard period, with said guard period part being scheduled between the uplink and the downlink parts. The duration of at least two of said three parts may be varied to fit the current system need.
摘要翻译：本发明公开了一种用于蜂窝通信系统的方法，其中业务以帧的形式发送，每帧包括第一数量的子帧，其中第二数量的所述子帧可用于至少上行链路或下行链路业务。所述第二数量的子帧中的至少一个被制成包括至少三部分，如下：一部分用于上行链路业务，一部分用于下行链路业务，一部分被用作保护周期，具有所述保护周期部分被调度在上行链路和下行链路部分之间。可以改变所述三个部分中的至少两个的持续时间以适应当前的系统需要。

100. 发明授权

US08737507B2 Method for transmitting of reference signals and determination of precoding matrices for multi-antenna transmission 有权
标题翻译：用于发射参考信号的方法和用于多天线传输的预编码矩阵的确定
公开(公告)号：US08737507B2
公开(公告)日：2014-05-27
申请号：US13127176
申请日：2009-05-14
申请人： David Astely , George Jöngren , Muhammad Imadur Rahman
发明人： David Astely , George Jöngren , Muhammad Imadur Rahman
IPC分类号： H04B7/02
CPC分类号： H04B7/0639 , H04B7/0417 , H04B7/0469 , H04B7/0617 , H04B7/0691 , H04L5/0023 , H04L5/005 , H04L25/03343 , H04L2025/03426 , H04L2025/03802
摘要： Determining transmitter antenna weights at a base station having more available transmit antennas than the available number of reference signals can be performed by transmitting reference signals and receiving channel feedback data derived by a mobile terminal from the reference signals. The reference signals are each assigned to one of two or more antenna groupings, wherein at least a first one of the antenna groupings includes two or more transmit antennas, and transmitted using at least one transmit antenna from the corresponding antenna grouping. A first beam-forming vector for the first one of the antenna grouping is determined, and mapping the one or more data streams to the transmit antennas according to a final precoding matrix that depends on the channel feedback data and the first beam-forming vector is performed, to obtain a weighted transmit signal for each of the antennas.
摘要翻译：可以通过从参考信号发送参考信号和接收由移动终端导出的信道反馈数据来确定具有比可用参考信号数更多的可用发射天线的基站的发射机天线权重。每个参考信号被分配给两个或多个天线分组中的一个，其中天线分组中的至少第一天线分组包括两个或更多个发射天线，并且使用来自相应天线分组的至少一个发射天线发射。确定天线分组中的第一个的第一波束形成向量，并且根据取决于信道反馈数据和第一波束形成向量的最终预编码矩阵将一个或多个数据流映射到发射天线以获得每个天线的加权发射信号。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式