公开(公告)号：US08457062B2

公开(公告)日：2013-06-04

申请号：US12934812

申请日：2008-09-15

申请人： Per Burström ,  Anders Furuskär ,  David Astely ,  Arne Simonsson

发明人： Per Burström ,  Anders Furuskär ,  David Astely ,  Arne Simonsson

IPC分类号： H04L5/22

CPC分类号： H04W52/146 ,  H04W52/10 ,  H04W52/242

摘要： A method performed in a wireless network includes receiving signals within a downlink frequency domain to enable channel estimation and measuring two or more signals only for two or more frequency bands of the downlink frequency domain that correspond to two or more uplink frequency bands associated with a scheduling grant or channel allocation that correspond to physical uplink channel frequency bands. The method also includes calculating path loss values for each of the frequency bands and calculating a total power based on the path loss values corresponding to the frequency bands. The method further includes determining a power allocation per frequency band based on the calculated total power to be applied to an uplink transmission and allocating the total power.

摘要翻译： 在无线网络中执行的方法包括：在下行链路频域内接收信号，以使能信道估计，并且仅测量与对应于与调度相关联的两个或多个上行链路频带的下行链路频域的两个或更多个频带 对应于物理上行链路信道频带的授权或信道分配。 该方法还包括计算每个频带的路径损耗值，并且基于对应于频带的路径损耗值来计算总功率。 该方法还包括基于所计算的上行链路传输的总功率来确定每个频带的功率分配并分配总功率。

公开(公告)号：US20110075594A1

公开(公告)日：2011-03-31

申请号：US12934812

申请日：2008-09-15

申请人： Per Burström ,  Anders Furuskär ,  David Astely ,  Arne Simonsson

发明人： Per Burström ,  Anders Furuskär ,  David Astely ,  Arne Simonsson

IPC分类号： H04B7/00 ,  H04J3/00

CPC分类号： H04W52/146 ,  H04W52/10 ,  H04W52/242

摘要： A method performed in a wireless network includes receiving signals within a downlink frequency domain to enable channel estimation and measuring two or more signals only for two or more frequency bands of the downlink frequency domain that correspond to two or more uplink frequency bands associated with a scheduling grant or channel allocation that correspond to physical uplink channel frequency bands. The method also includes calculating path loss values for each of the frequency bands and calculating a total power based on the path loss values corresponding to the frequency bands. The method further includes determining a power allocation per frequency band based on the calculated total power to be applied to an uplink transmission and allocating the total power.

摘要翻译： 在无线网络中执行的方法包括：在下行链路频域内接收信号，以使能信道估计，并且仅测量与对应于与调度相关联的两个或多个上行链路频带的下行链路频域的两个或更多个频带 对应于物理上行链路信道频带的授权或信道分配。 该方法还包括计算每个频带的路径损耗值，并且基于对应于频带的路径损耗值来计算总功率。 该方法还包括基于所计算的上行链路传输的总功率来确定每个频带的功率分配并分配总功率。

公开(公告)号：US09002387B2

公开(公告)日：2015-04-07

申请号：US13520305

申请日：2010-06-17

申请人： David Astely ,  Anders Furuskär ,  Stefan Parkvall

发明人： David Astely ,  Anders Furuskär ,  Stefan Parkvall

IPC分类号： H04B7/00 ,  H04B15/00 ,  H04W72/08

CPC分类号： H04W72/082

摘要： Methods and arrangements in a telecommunication network for intercell interference coordination. The telecommunication network comprises a first base station, acting as serving base station for a mobile station, and a second base station. The method comprises determining that transmission interference to the mobile station is to be limited. The method also comprises triggering the mobile station to send a signal on a radio resource, which signal is to be received by the second base station, enabling the second base station to select a transmission parameter that limits interference for the mobile station.

摘要翻译： 电信网络中用于小区间干扰协调的方法和布置。 电信网络包括作为移动台的服务基站的第一基站和第二基站。 该方法包括确定对移动站的传输干扰是有限的。 该方法还包括触发移动台在无线电资源上发送信号，该信号将由第二基站接收，使得第二基站能够选择限制移动台的干扰的传输参数。

公开(公告)号：US20120276937A1

公开(公告)日：2012-11-01

申请号：US13520305

申请日：2010-06-17

申请人： David Astely ,  Anders Furuskär ,  Stefan Parkvall

发明人： David Astely ,  Anders Furuskär ,  Stefan Parkvall

IPC分类号： H04W24/00 ,  H04W72/12

CPC分类号： H04W72/082

摘要： Methods and arrangements in a telecommunication network for intercell interference coordination. The telecommunication network comprises a first base station, acting as serving base station for a mobile station, and a second base station. The method comprises determining that transmission interference to the mobile station is to be limited. The method also comprises triggering the mobile station to send a signal on a radio resource, which signal is to be received by the second base station, enabling the second base station to select a transmission parameter that limits interference for the mobile station.

摘要翻译： 电信网络中用于小区间干扰协调的方法和布置。 电信网络包括作为移动台的服务基站的第一基站和第二基站。 该方法包括确定对移动站的传输干扰是有限的。 该方法还包括触发移动台在无线电资源上发送信号，该信号将由第二基站接收，使得第二基站能够选择限制移动台的干扰的传输参数。

公开(公告)号：US09603101B2

公开(公告)日：2017-03-21

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： H04W4/00 ,  H04W52/18 ,  H04W24/02 ,  H04W16/32 ,  H04W48/12 ,  H04W84/04

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.

公开(公告)号：US09596019B2

公开(公告)日：2017-03-14

申请号：US12992921

申请日：2008-05-28

申请人： Henrik Asplund ,  David Astely ,  Johan Nystrom ,  Tobias Tynderfeldt

发明人： Henrik Asplund ,  David Astely ,  Johan Nystrom ,  Tobias Tynderfeldt

IPC分类号： H04B1/38 ,  H04B7/10 ,  H01Q1/24 ,  H01Q21/24 ,  H04L5/04 ,  H04L5/06

CPC分类号： H04B7/10 ,  H01Q1/246 ,  H01Q21/24 ,  H04L5/04 ,  H04L5/06

摘要： The present invention relates to a group (G1, G2) of at least two transceiver units (1, 2; 3, 4) in at least one wireless communication system. The transceiver units (1, 2; 3, 4) in the group (G1, G2) are arranged for wireless communication with at least one other transceiver unit. The transceiver units (1, 2; 3, 4) in the group (G1, G2) are arranged to transmit signals with polarizations that are essentially parallel to each other when received by at least one transceiver unit for which the transmitted signals (5, 6) constitutes interference.The present invention also relates to a method, a node and a transceiver unit.

摘要翻译： 本发明还涉及一种方法，节点和收发机单元。

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：US08908789B2

公开(公告)日：2014-12-09

申请号：US13520880

申请日：2010-01-12

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

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

IPC分类号： H04L1/02 ,  H04L5/00 ,  H04L25/02

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

摘要： 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.

摘要翻译： 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：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：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。