公开(公告)号：US10097324B2

公开(公告)日：2018-10-09

申请号：US13522106

申请日：2010-05-12

申请人： Ali Behravan ,  David Astely ,  George Jöngren

发明人： Ali Behravan ,  David Astely ,  George Jöngren

IPC分类号： H04L5/00

摘要： The present invention uses user-specific resources, as allocated on the uplink, for conveying one or more antenna-specific sounding reference signals (SRSs). This technique advantageously permits, for example, a user equipment (UE) configured for uplink Multiple-Input-Multiple-Output (MIMO) operation to send antenna-specific SRSs within the granted resources allocated to the UE via one or more scheduled uplink grants. That is, within the granted resources allocated by a given uplink grant, a UE uses at least a portion of those resources for sending antenna-specific SRSs, rather than for sending uplink data (user traffic). Thus, in one or more embodiments, the present invention comprises a method at a UE of transmitting antenna-specific SRSs for two or more uplink transmit antennas. The method comprises transmitting an antenna-specific sounding reference signal for at least one of the uplink transmit antennas within a granted resource allocated to the user equipment for a scheduled uplink data transmission.

公开(公告)号：US20130242949A1

公开(公告)日：2013-09-19

申请号：US13874768

申请日：2013-05-01

申请人： Yang Hu ,  David Astely ,  David Hammarwall ,  George Jöngren ,  Xinghua Song ,  Jianfeng Wang

发明人： Yang Hu ,  David Astely ,  David Hammarwall ,  George Jöngren ,  Xinghua Song ,  Jianfeng Wang

IPC分类号： H04W72/06

CPC分类号： H04W28/0263 ,  H04J11/00 ,  H04L5/0026 ,  H04L5/0048 ,  H04W72/042 ,  H04W72/0453 ,  H04W72/06

摘要： The present invention provides a unified, rank independent mapping between antenna ports and group/code pairs. Each antenna port is uniquely associated with one code division multiplexing (CDM) group and one orthogonal cover code (OCC). The mapping between antenna ports and group/code pairs is chosen such that, for a given antenna port, the CDM group and OCC will be the same for every transmission rank.

摘要翻译： 本发明提供天线端口和组/码对之间的统一的等级独立映射。 每个天线端口与一个码分多路复用（CDM）组和一个正交覆盖码（OCC）唯一相关。 选择天线端口和组/码对之间的映射，使得对于给定的天线端口，CDM组和OCC对于每个传输等级将是相同的。

公开(公告)号：US08358979B2

公开(公告)日：2013-01-22

申请号：US12365703

申请日：2009-02-04

申请人： David Astely ,  David Hammarwall ,  George Jöngren ,  Per Magnus Lundevall

发明人： David Astely ,  David Hammarwall ,  George Jöngren ,  Per Magnus Lundevall

IPC分类号： H04B1/00

CPC分类号： H04W24/10 ,  H04B17/345 ,  H04L5/003 ,  H04L5/0048 ,  H04L5/0062 ,  H04L5/0073 ,  H04W24/08

摘要： A method for facilitating noise and interference measurements on an air interface of a wireless network includes obtaining information relating to a time-varying layout of a silent resource element (RE) grid and taking a presence of a silent RE grid into account in the reception of a control or a data channel.

摘要翻译： 用于促进无线网络的空中接口上的噪声和干扰测量的方法包括获得与无声资源元素（RE）网格的时变布局有关的信息，并且在接收到无线资源元素 控制或数据通道。

公开(公告)号：US20120106471A1

公开(公告)日：2012-05-03

申请号：US13256595

申请日：2010-06-18

申请人： Ali Behravan ,  David Astely ,  George Jöngren

发明人： Ali Behravan ,  David Astely ,  George Jöngren

IPC分类号： H04W72/04

CPC分类号： H04W72/1289 ,  H04L5/0048 ,  H04L5/005 ,  H04L5/0092 ,  H04L5/0094 ,  H04L25/0224 ,  H04L27/2611 ,  H04W72/042 ,  H04W72/14 ,  H04W74/006

摘要： The present invention relates to methods and arrangements for providing a more flexible configuration of SRS transmission. This is achieved by dynamically triggering a mobile terminal to transmit SRS. Thus, embodiments of the invention allow dynamically trigged SRS in any uplink subframe, even without necessarily reserving resources semi-statically on cell level. This is done by signaling to the terminal whether the mobile terminal should leave the predefined uplink symbol empty for sounding reference signals or use it for data transmission. In case a terminal leaves the last symbol empty for sounding reference signals, there are two possibilities, either the UE shall transmit one or several reference signals from one or several antennas, or the terminal shall leave the last symbol blank since another terminal may be using the resource for sounding. Accordingly, in a specific embodiment, there are at least three different messages that can be conveyed to the terminal: use the predefined uplink symbol for data, leave it blank or use it for sounding reference signals.

摘要翻译： 本发明涉及用于提供更灵活的SRS传输配置的方法和装置。 这通过动态触发移动终端来发送SRS来实现。 因此，本发明的实施例允许在任何上行链路子帧中动态触发SRS，甚至不必在小区级别上半静态地保留资源。 这通过向终端发信号完成，移动终端是否应该将预定义的上行链路符号留空以用于探测参考信号或者将其用于数据传输。 在终端将最后一个符号留空以用于探测参考信号的情况下，存在两种可能性：UE应该从一个或多个天线发送一个或几个参考信号，或者终端应该将最后一个符号留空，因为另一个终端可能正在使用 侦听资源。 因此，在具体实施例中，存在可以传送到终端的至少三个不同的消息：使用预定义的上行链路符号用于数据，将其留空或用于探测参考信号。

公开(公告)号：US20110122819A1

公开(公告)日：2011-05-26

申请号：US12999863

申请日：2009-04-14

申请人： George Jöngren ,  David Astely

发明人： George Jöngren ,  David Astely

IPC分类号： H04W40/00

CPC分类号： H04L1/1822 ,  H04L1/1635 ,  H04L1/1812 ,  H04L1/1887

摘要： The present invention relates to methods and arrangements in a wireless communication system that enable the use of multi-codeword transmission and ACK/NACK compression with low performance loss. It also enables the use of advanced receivers of reasonable complexity. This is achieved by a solution based on the even distribution of the symbols of separately coded blocks of information bits over the available physical resources before transmission. Each physical resource will thus carry a mixture of symbols from all blocks of information bits, which results in a more similar channel quality for the blocks of information bits. A compressed ACK/NACK message corresponding to the blocks of information bits will thus be more accurate and the performance loss due to the ACK/NACK compression can be reduced.

摘要翻译： 本发明涉及无线通信系统中的方法和装置，其能够使用多码字传输和具有低性能损失的ACK / NACK压缩。 它还可以使用合理复杂的高级接收机。 这是通过基于在传输之前的可用物理资源上的分开编码的信息比特块的符号的均匀分布的解决方案来实现的。 因此，每个物理资源将携带来自所有信息比特块的符号的混合，这导致信息比特块的更相似的信道质量。 因此，与信息比特块相对应的压缩ACK / NACK消息将更加准确，并且可以减少由于ACK / NACK压缩引起的性能损失。

公开(公告)号：US09565696B2

公开(公告)日：2017-02-07

申请号：US13370649

申请日：2012-02-10

申请人： Ali Behravan ,  David Astely ,  George Jöngren

发明人： Ali Behravan ,  David Astely ,  George Jöngren

IPC分类号： H04W72/12 ,  H04L5/00 ,  H04L27/26 ,  H04W72/04 ,  H04W74/00 ,  H04L25/02

CPC分类号： H04W72/1289 ,  H04L5/0048 ,  H04L5/005 ,  H04L5/0092 ,  H04L5/0094 ,  H04L25/0224 ,  H04L27/2611 ,  H04W72/042 ,  H04W72/14 ,  H04W74/006

摘要： The present invention relates to methods and apparatus for providing a more flexible configuration of sounding reference signal, SRS, transmission. This is achieved by dynamically triggering a mobile terminal to transmit SRS. Thus, embodiments of the invention include a method implemented by a base station in a communications network that semi-statically configures some uplink symbols for periodic SRS transmission and other uplink symbols for aperiodic SRS transmission. The method includes dynamically determining whether an uplink symbol that has been semi-statically configured for aperiodic SRS transmission is to be used by a given mobile terminal at a given time for SRS transmission. The method then further includes signaling a terminal-specific instruction that indicates said determination to the given mobile terminal.

摘要翻译： 本发明涉及用于提供更灵活的探测参考信号SRS传输配置的方法和装置。 这通过动态触发移动终端来发送SRS来实现。 因此，本发明的实施例包括由通信网络中的基站实现的方法，其中半静态地配置用于周期性SRS传输的一些上行链路符号以及用于非周期SRS传输的其他上行链路符号。 该方法包括动态地确定给定移动终端在给定时间是否使用用于非周期性SRS传输的半静态配置的上行链路符号用于SRS传输。 该方法然后还包括向给定的移动终端发信号通知指示所述确定的终端专用指令。

公开(公告)号：US08817719B2

公开(公告)日：2014-08-26

申请号：US13256595

申请日：2010-06-18

申请人： Ali Behravan ,  David Astely ,  George Jöngren

发明人： Ali Behravan ,  David Astely ,  George Jöngren

IPC分类号： H04W72/04 ,  H04W72/12 ,  H04W74/00 ,  H04L5/00 ,  H04W56/00 ,  H04L25/02

CPC分类号： H04W72/1289 ,  H04L5/0048 ,  H04L5/005 ,  H04L5/0092 ,  H04L5/0094 ,  H04L25/0224 ,  H04L27/2611 ,  H04W72/042 ,  H04W72/14 ,  H04W74/006

摘要： The present invention relates to methods and arrangements for providing a more flexible configuration of SRS transmission. This is achieved by dynamically triggering a mobile terminal to transmit SRS. Thus, embodiments of the invention allow dynamically trigged SRS in any uplink subframe, even without necessarily reserving resources semi-statically on cell level. This is done by signaling to the terminal whether the mobile terminal should leave the predefined uplink symbol empty for sounding reference signals or use it for data transmission. In case a terminal leaves the last symbol empty for sounding reference signals, there are two possibilities, either the UE shall transmit one or several reference signals from one or several antennas, or the terminal shall leave the last symbol blank since another terminal may be using the resource for sounding. Accordingly, in a specific embodiment, there are at least three different messages that can be conveyed to the terminal: use the predefined uplink symbol for data, leave it blank or use it for sounding reference signals.

摘要翻译： 本发明涉及用于提供更灵活的SRS传输配置的方法和装置。 这通过动态触发移动终端来发送SRS来实现。 因此，本发明的实施例允许在任何上行链路子帧中动态触发SRS，甚至不必在小区级别上半静态地保留资源。 这通过向终端发信号完成，移动终端是否应该将预定义的上行链路符号留空以用于探测参考信号或者将其用于数据传输。 在终端将最后一个符号留空以用于探测参考信号的情况下，存在两种可能性：UE应该从一个或多个天线发射一个或多个参考信号，或者终端应该将最后一个符号留空，因为另一个终端可能正在使用 侦听资源。 因此，在具体实施例中，存在可以传送到终端的至少三个不同的消息：使用预定义的上行链路符号用于数据，将其留空或用于探测参考信号。

公开(公告)号：US08401485B2

公开(公告)日：2013-03-19

申请号：US12522794

申请日：2008-02-06

申请人： George Jöngren ,  David Astely ,  Bo Göransson ,  Jonas B. Karlsson

发明人： George Jöngren ,  David Astely ,  Bo Göransson ,  Jonas B. Karlsson

IPC分类号： H04B17/00

CPC分类号： H04B17/24 ,  H04B17/21

摘要： A device system, computer medium and method for calibrating at least one impairment of a signal transmitted from a transmitting unit to a receiving unit, the method including receiving at the receiving unit at least two signals transmitted from the transmitting unit, estimating at the receiving unit, based on the received at least two signals, at least one parameter associated with transmit chain links between the transmitting unit and corresponding antennas of the transmitting unit, collecting the at least one parameter in a measurement report at the receiving unit, and transmitting the measurement report from the receiving unit for correcting the at least one impairment based on the at least one parameter.

摘要翻译： 一种用于校准从发送单元发送到接收单元的信号的至少一个损害的设备系统，计算机介质和方法，所述方法包括在接收单元处接收从发送单元发送的至少两个信号，在接收单元处估计 基于所接收的至少两个信号，与所述发送单元与所述发送单元的相应天线之间的发送链路链路相关联的至少一个参数，在所述接收单元处收集测量报告中的所述至少一个参数，以及发送所述测量 从所述接收单元报告基于所述至少一个参数来校正所述至少一个损伤。

公开(公告)号：US20120294254A1

公开(公告)日：2012-11-22

申请号：US13522106

申请日：2010-05-12

申请人： Ali Behravan ,  David Astely ,  George Jöngren

发明人： Ali Behravan ,  David Astely ,  George Jöngren

IPC分类号： H04W72/04

CPC分类号： H04L5/0048 ,  H04L5/0023 ,  H04L5/0094

摘要： The present invention uses user-specific resources, as allocated on the uplink, for conveying one or more antenna-specific sounding reference signals (SRSs). This technique advantageously permits, for example, a user equipment (UE) configured for uplink Multiple-Input-Multiple-Output (MIMO) operation to send antenna-specific SRSs within the granted resources allocated to the UE via one or more scheduled uplink grants. That is, within the granted resources allocated by a given uplink grant, a UE uses at least a portion of those resources for sending antenna-specific SRSs, rather than for sending uplink data (user traffic). Thus, in one or more embodiments, the present invention comprises a method at a UE of transmitting antenna-specific SRSs for two or more uplink transmit antennas. The method comprises transmitting an antenna-specific sounding reference signal for at least one of the uplink transmit antennas within a granted resource allocated to the user equipment for a scheduled uplink data transmission.

摘要翻译： 本发明使用在上行链路上分配的用户特定资源来传送一个或多个天线特定的探测参考信号（SRS）。 该技术有利地允许例如配置用于上行链路多输入多输出（MIMO）操作的用户设备（UE），以经由一个或多个调度的上行链路授权在分配给UE的授权资源内发送天线专用SRS。 也就是说，在由给定的上行链路授权分配的授权资源内，UE使用这些资源的至少一部分来发送天线特定的SRS，而不是用于发送上行链路数据（用户业务）。 因此，在一个或多个实施例中，本发明包括在UE处发射用于两个或更多个上行链路发射天线的天线专用SRS的方法。 所述方法包括在分配给所述用户设备的授权资源中为所调度的上行链路数据传输发送用于所述上行链路发射天线中的至少一个的天线专用探测参考信号。

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。