公开(公告)号：US08699375B2

公开(公告)日：2014-04-15

申请号：US13617555

申请日：2012-09-14

Applicant: Tobias Tynderfeldt ,  David Astely ,  Stefan Parkvall ,  Johan Torsner

Inventor： Tobias Tynderfeldt ,  David Astely ,  Stefan Parkvall ,  Johan Torsner

IPC: H04J1/16

CPC classification number: H04L1/1607 ,  H04L1/0027 ,  H04L1/0029 ,  H04L1/0032 ,  H04L1/0034 ,  H04L1/0038 ,  H04L1/1854

Abstract: Method and apparatus for conveying feedback reports from a data receiving party (300) for data received from a data sending party (302) in a wireless connection. A plurality of feedback resources (304) assigned to different feedback information codes are allocated to the data receiving party for transmitting feedback reports. After checking whether the data was received correctly or not, the data receiving party selects a feedback resource (FR2) with a feedback information code that corresponds to one or more feedback reports on the received data. The data receiving party then sends feedback information on the selected feedback resource to the data sending party, thereby conveying the corresponding feedback information code. In this way, multiple feedback reports can be conveyed in a single feedback resource to the data sending party while still retaining single carrier properties.

Abstract translation: 从数据接收方（300）传送用于在无线连接中从数据发送方（302）接收的数据的反馈报告的方法和装置。 分配给不同反馈信息码的多个反馈资源（304）被分配给用于发送反馈报告的数据接收方。 在检查数据是否被正确接收之后，数据接收方使用与接收到的数据的一个或多个反馈报告相对应的反馈信息码来选择反馈资源（FR2）。 然后，数据接收方将所选择的反馈资源的反馈信息发送给数据发送方，从而传送相应的反馈信息码。 以这种方式，多个反馈报告可以在单个反馈资源中传达给数据发送方，同时仍然保留单载波属性。

公开(公告)号：US20140056190A1

公开(公告)日：2014-02-27

申请号：US14110164

申请日：2011-04-08

Applicant: Yu Qian ,  David Astely ,  Ali Behravan ,  Jiansong Gan

Inventor： Yu Qian ,  David Astely ,  Ali Behravan ,  Jiansong Gan

IPC: H04W24/02

CPC classification number: H04W24/02 ,  H04B7/2656 ,  H04L1/205 ,  H04W28/04 ,  H04W88/08

Abstract: A first base station (14) in a wireless communication system (10) operating according to a synchronised time division scheme detects interference of uplink communication, determines the delay of the interference in relation to an own communication structure (CS1), detects aerial interface identifying data of the source of interference identifying a further base station and sends an indication of the further base station interfering uplink communication to the interference handling node (22). The indication is accompanied by identification data comprising aerial interface identifying data of the further base station and distance data determining the distance (D1) between the first and the further base station. The interference handling node (37) receives the indication with accompanying identification data, investigates the identification data in order to determine the identity of a candidate for the further base station and orders the candidate base station to perform an interference limitation activity.

Abstract translation: 根据同步时分方式操作的无线通信系统（10）中的第一基站（14）检测上行链路通信的干扰，确定相对于自身的通信结构（CS1）的干扰的延迟，检测空中接口识别 识别另一基站的干扰源的数据，并向干扰处理节点（22）发送进一步的基站干扰上行链路通信的指示。 该指示伴随有识别数据，其包括另外的基站的空中接口标识数据和确定第一和另外的基站之间的距离（D1）的距离数据。 干扰处理节点（37）用附带的识别数据接收指示，调查识别数据，以便确定另外基站的候选者的身份，并命令候选基站执行干扰限制活动。

公开(公告)号：US08509122B2

公开(公告)日：2013-08-13

申请号：US12523134

申请日：2007-01-16

Applicant: David Astely ,  Hannes Ekström ,  Alireza Nejatian ,  Per Skillermark ,  Tobias Tynderfeldt ,  Erik Lars Westerberg

Inventor： David Astely ,  Hannes Ekström ,  Alireza Nejatian ,  Per Skillermark ,  Tobias Tynderfeldt ,  Erik Lars Westerberg

IPC: H04L5/14 ,  H04J3/00 ,  H04J3/06 ,  H04L12/26 ,  H04L12/56

CPC classification number: H04W72/1231 ,  H04W52/267 ,  H04W56/003

Abstract: The invention discloses a method (800) for use in a cellular wireless system (100) with a base station (120), a cell (110) in the system and a first user terminal (130) which can be scheduled for receiving traffic from the base station during a down link period, and for transmitting traffic to the base station during an up link period. There is a first guard period (TUD) between the up link period and the down link period, and a second guard period (TDU) between the down link period and the up link period. The method (800) comprises measuring the interference level in the cell for part of the time between two consecutive down link periods, and varying at least one of the following in accordance with the measured interference level: the duration of the first or second guard period, the duration of the up link period, or the traffic sent in the up link period.

Abstract translation: 本发明公开了一种在具有基站（120），系统中的小区（110）和第一用户终端（130）的蜂窝无线系统（100）中使用的方法（800），所述第一用户终端可被调度为从 在下行链路周期期间的基站，并且用于在上行链路周期期间向基站发送业务。 在上行链路周期和下行链路周期之间存在第一保护周期（TUD）和下行链路周期与上行链路周期之间的第二保护周期（TDU）。 方法（800）包括在两个连续的下行链路周期之间的部分时间内测量小区中的干扰电平，并且根据所测量的干扰电平来改变以下中的至少一个：第一或第二保护周期的持续时间 ，上行链路周期的持续时间，或在上行链路周期中发送的流量。

公开(公告)号：US08401485B2

公开(公告)日：2013-03-19

申请号：US12522794

申请日：2008-02-06

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

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

IPC: H04B17/00

CPC classification number: H04B17/24 ,  H04B17/21

Abstract: 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.

Abstract translation: 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：US20130034178A1

公开(公告)日：2013-02-07

申请号：US13520880

申请日：2010-01-12

Applicant: Yang Hu ,  David Astely ,  Xinghua Song ,  Jianfeng Wang

Inventor： Yang Hu ,  David Astely ,  Xinghua Song ,  Jianfeng Wang

IPC: H04B7/02 ,  H04L27/04 ,  H04L27/06

CPC classification number: H04L25/0226 ,  H04B7/0413 ,  H04B7/0678 ,  H04L5/0016 ,  H04L5/0023 ,  H04L5/005 ,  H04L5/0051 ,  H04L5/1469 ,  H04L25/0204 ,  H04L25/0224

Abstract: The prevent invention provides a method for performing channel estimation and detection in a Multiple-Input-Multiple-Output (MIMO) system, including: generating a demodulation reference signal, DM-RS, pattern for an extended cyclic prefix (CP); and estimating and detecting channel performance based on the generated DM-RS signal pattern. The DM-RS pattern supports from rank 1 to rank 8 patterns for 8 layer transmission. A transmitter, a receiver and a system thereof are also provided. The solution of the present invention improves channel estimation accuracy, saves channel estimation implementation and implementation complexity at terminals.

Abstract translation: 防止发明提供了一种在多输入多输出（MIMO）系统中执行信道估计和检测的方法，包括：产生用于扩展循环前缀（CP）的解调参考信号DM-RS，模式; 以及基于所生成的DM-RS信号模式来估计和检测信道性能。 DM-RS模式支持8层传输从1级到8级模式。 还提供发射机，接收机及其系统。 本发明的解决方案提高了信道估计精度，节省了终端的信道估计实现和实现复杂度。

公开(公告)号：US20120294254A1

公开(公告)日：2012-11-22

申请号：US13522106

申请日：2010-05-12

Applicant: Ali Behravan ,  David Astely ,  George Jöngren

Inventor： Ali Behravan ,  David Astely ,  George Jöngren

IPC: H04W72/04

CPC classification number: H04L5/0048 ,  H04L5/0023 ,  H04L5/0094

Abstract: 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.

Abstract translation: 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：US08270516B2

公开(公告)日：2012-09-18

申请号：US12306132

申请日：2006-10-04

Applicant: David Astely ,  Bo Göransson ,  Per Skillermark

Inventor： David Astely ,  Bo Göransson ,  Per Skillermark

IPC: H04B7/02

CPC classification number: H04B7/0626 ,  H04B7/043 ,  H04B7/0617 ,  H04B7/0684 ,  H04L1/20

Abstract: 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.

Abstract translation: 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 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。

公开(公告)号：US20110176443A1

公开(公告)日：2011-07-21

申请号：US13058474

申请日：2009-02-18

Applicant: David Astely ,  Daniel Larsson

Inventor： David Astely ,  Daniel Larsson

IPC: H04W24/00

CPC classification number: H04L1/1607 ,  H04L1/009 ,  H04L1/1642 ,  H04L1/1861 ,  H04W74/004

Abstract: Method and arrangement in a terminal for receiving data packets from a base station and providing feedback to the base station. The feedback concerns the reception status of the received data packets and may comprise an ACK/NAK. The method comprises receiving and decoding data packets from the base station in a sub-frame. It is further established whether any data packet within the received subframe is not correctly received and detected whether any subframe, expected to be received, has been missed. Further, acknowledgement information ACK/NAK is generated, a scrambling code selected with which the ACK/NAK is scrambled. The scrambled ACK/NAK is then sent to the base station, concerning the reception status of the data packets within the received subframes.

Abstract translation: 用于从基站接收数据分组并向基站提供反馈的终端中的方法和装置。 反馈涉及接收的数据分组的接收状态，并且可以包括ACK / NAK。 该方法包括在子帧中接收和解码来自基站的数据分组。 进一步确定接收到的子帧内的任何数据分组是否未被正确地接收和检测，预计将接收的子帧是否已被遗漏。 此外，产生确认信息ACK / NAK，选择ACK / NAK加扰的扰码。 然后将加扰的ACK / NAK发送到基站，涉及接收的子帧内的数据分组的接收状态。

公开(公告)号：US20110103338A1

公开(公告)日：2011-05-05

申请号：US12990404

申请日：2008-02-05

Applicant: David Astely ,  Erik Dahlman ,  Ylva Jading ,  Stefan Parkvall

Inventor： David Astely ,  Erik Dahlman ,  Ylva Jading ,  Stefan Parkvall

IPC: H04W72/04

CPC classification number: H04W4/20 ,  H04J11/0069 ,  H04L5/0007 ,  H04L5/0053

Abstract: 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.

Abstract translation: 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。

公开(公告)号：US20110096693A1

公开(公告)日：2011-04-28

申请号：US13002144

申请日：2008-12-09

Applicant: David Astely ,  Yang Hu ,  Daniel Larsson ,  Lei Wan

Inventor： David Astely ,  Yang Hu ,  Daniel Larsson ,  Lei Wan

IPC: H04L12/26

CPC classification number: H04L1/1657 ,  H04L1/1635 ,  H04L1/1692 ,  H04L1/1829 ,  H04L5/0055 ,  H04L27/18 ,  H04L27/34 ,  H04W72/042

Abstract: A method in a terminal for providing an ACK/NAK message to a base station is provided. The terminal counts the number of assigned downlink subframes detected from the base station resulting in k. The terminal then establishes whether each of a number of transport blocks comprised in the counted k downlink subframes is correctly received or not. In the case when each one of the transport blocks, comprised in the k downlink subframes is estimated as correctly received the terminal provides to the base station an encoded ACK message for the k subframes, which comprises k, the number of subframes.

Abstract translation: 提供了一种用于向基站提供ACK / NAK消息的终端中的方法。 终端计算从基站检测到的分配的下行链路子帧的数量导致k。 终端然后确定包含在计数的k个下行链路子帧中的多个传输块中的每一个是否被正确接收。 在包括在k个下行链路子帧中的每个传输块被估计为正确接收的情况下，终端向基站提供包括k个子帧的k个子帧的编码ACK消息。