公开(公告)号：US20120314592A1

公开(公告)日：2012-12-13

申请号：US13257607

申请日：2011-04-29

Applicant: Ali Behravan ,  David Astely ,  Yu Qian

Inventor： Ali Behravan ,  David Astely ,  Yu Qian

IPC: H04W24/02

CPC classification number: H04B7/2656

Abstract: A first base station (14) in a wireless communication system (10) operating according to a synchronised time division duplex scheme comprises an antenna (24), a radio communication unit (26) and an interference handling module (28). The interference handling module comprises an interference investigating unit (30) and a transmission control unit (34) configured to provide a sounding frame in which a variable downlink time interval has a pre-defined size long enough to provoke interference, order the interference investigating unit to obtain and analyse a link quality data parameter in a non-downlink time interval and determine whether interference from another base station is present. The transmission control unit is further configured to order the radio communication unit (26) to reduce the size of following variable downlink time intervals according to an interference reduction scheme for obtaining time intervals with a guaranteed reduced size if interference from another base station is present.

Abstract translation: 根据同步的时分双工方式操作的无线通信系统（10）中的第一基站（14）包括天线（24），无线电通信单元（26）和干扰处理模块（28）。 干扰处理模块包括干扰调查单元（30）和传输控制单元（34），其被配置为提供其中可变下行链路时间间隔具有足够长的预定义尺寸以引起干扰的探测帧，命令干扰调查单元 在非下行链路时间间隔中获取和分析链路质量数据参数，并确定是否存在来自另一个基站的干扰。 传输控制单元还被配置为：如果存在来自另一基站的干扰，则根据用于获得具有保证减小的大小的时间间隔的干扰减少方案，命令无线电通信单元（26）减小跟随可变下行链路时间间隔的大小。

公开(公告)号：US08295869B2

公开(公告)日：2012-10-23

申请号：US12521942

申请日：2007-02-05

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

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

IPC: H04B7/00 ,  H04Q7/20

CPC classification number: H01Q21/24 ,  H01Q3/26 ,  H04B7/0634 ,  H04B7/0639 ,  H04B7/066 ,  H04B7/0671 ,  H04B7/0673 ,  H04B17/21 ,  H04B17/364

Abstract: A method and apparatus of improving the performance of a mobile radio system (100) comprising at least one radio device (105, 120) having at least two transmission equipments (114) adapted to transmit radio signals within a frequency band is disclosed. The method comprises deriving (220) a relative time delay of the at least two transmission equipments based on at least two sub-band transmit weight vectors, wherein a sub-band transmit weight vector comprises weight vectors applicable to the at least two transmission equipments, respectively, in a sub-band of the frequency band.

Abstract translation: 公开了一种改进移动无线电系统（100）的性能的方法和装置，该移动无线电系统（100）包括至少一个无线电设备（105,120），该至少一个无线电设备具有适于在频带内发射无线电信号的至少两个传输设备（114）。 该方法包括基于至少两个子带发射权重向量导出（220）至少两个传输设备的相对时间延迟，其中子带发射权重向量包括可应用于至少两个传输设备的权重向量， 分别在频带的子带中。

公开(公告)号：US20120106471A1

公开(公告)日：2012-05-03

申请号：US13256595

申请日：2010-06-18

Applicant: Ali Behravan ,  David Astely ,  George Jöngren

Inventor： Ali Behravan ,  David Astely ,  George Jöngren

IPC: H04W72/04

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

Abstract: 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.

Abstract translation: 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：US20120099439A1

公开(公告)日：2012-04-26

申请号：US13381026

申请日：2010-06-29

Applicant: Robert Baldemair ,  Ylva Jading ,  Erik Dahlman ,  David Astely

Inventor： Robert Baldemair ,  Ylva Jading ,  Erik Dahlman ,  David Astely

IPC: H04W72/04 ,  H04W24/00

CPC classification number: H04W72/1289 ,  H04L5/0044 ,  H04L5/0094 ,  H04L5/0096 ,  H04W24/10

Abstract: Methods and user equipment are provided for activation of downlink component carriers. Even though configured to monitor multiple component carriers, a user equipment unit does not start to monitor them immediately, but instead monitors only one or a few carriers initially. Once a downlink scheduling assignment is received, the user equipment unit will then monitor additional component carriers. After one or more subframes where the user equipment unit is not scheduled, the user equipment unit returns to its original state where it monitors one or a few carriers.

Abstract translation: 提供了用于激活下行链路分量载波的方法和用户设备。 即使配置为监视多个分量载波，用户设备单元也不会立即开始监视它们，而是最初只监控一个或几个运营商。 一旦接收到下行链路调度分配，用户设备单元将监视附加分量载波。 在用户设备单元未被调度的一个或多个子帧之后，用户设备单元返回其监视一个或几个载波的其原始状态。

公开(公告)号：US20110179332A1

公开(公告)日：2011-07-21

申请号：US13063324

申请日：2009-09-10

Applicant: Tobias Rydén ,  David Astely ,  Johan Nilsson

Inventor： Tobias Rydén ,  David Astely ,  Johan Nilsson

IPC: H04L1/18 ,  G06F11/14

CPC classification number: H04L1/1607 ,  H04L1/1819 ,  H04L1/1822 ,  H04L1/1835

Abstract: A method for automatic repeat request operation of a plurality of simultaneous automatic repeat request processes is disclosed. The method comprises receiving a transmission comprising at least one transport block; storing soft bits of the transport block in a buffer; and transmitting an automatic repeat request process signal, wherein the transmitting of the automatic repeat request process signal comprises one of: transmitting an acknowledgment signal if the transport block is determined to be properly received, transmitting a negative acknowledgement signal if the transport block is determined to contain an error, and transmitting a blocking indication signal if there is not room enough for the soft bits in the buffer. A transceiver arrangement and a computer program are also disclosed.

Abstract translation: 公开了一种用于多个同时自动重复请求过程的自动重复请求操作的方法。 该方法包括接收包括至少一个传输块的传输; 将传输块的软比特存储在缓冲器中; 以及发送自动重发请求处理信号，其中所述自动重发请求处理信号的发送包括以下之一：如果所述传输块被确定为正确接收，则发送确认信号;如果所述传输块被确定为 包含错误，并且如果没有足够的空间用于缓冲器中的软比特，则发送阻塞指示信号。 还公开了收发器装置和计算机程序。

公开(公告)号：US20110170562A1

公开(公告)日：2011-07-14

申请号：US12987128

申请日：2011-01-09

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

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

IPC: H03K9/00 ,  H04J13/00

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：US20110122819A1

公开(公告)日：2011-05-26

申请号：US12999863

申请日：2009-04-14

Applicant: George Jöngren ,  David Astely

Inventor： George Jöngren ,  David Astely

IPC: H04W40/00

CPC classification number: H04L1/1822 ,  H04L1/1635 ,  H04L1/1812 ,  H04L1/1887

Abstract: 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.

Abstract translation: 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：US20110075594A1

公开(公告)日：2011-03-31

申请号：US12934812

申请日：2008-09-15

Applicant: Per Burström ,  Anders Furuskär ,  David Astely ,  Arne Simonsson

Inventor： Per Burström ,  Anders Furuskär ,  David Astely ,  Arne Simonsson

IPC: H04B7/00 ,  H04J3/00

CPC classification number: H04W52/146 ,  H04W52/10 ,  H04W52/242

Abstract: 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.

Abstract translation: 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：US20110013536A1

公开(公告)日：2011-01-20

申请号：US12933301

申请日：2008-11-03

Applicant: Sorour Falahati ,  David Astely ,  Robert Baldemair

Inventor： Sorour Falahati ,  David Astely ,  Robert Baldemair

IPC: H04L12/26

CPC classification number: H04L1/0073 ,  H04L1/0057 ,  H04L1/1628 ,  H04L1/1809 ,  H04L2001/125

Abstract: Methods and apparatus for generating, transmitting, and processing error control information in a wireless communication system are disclosed. The error control information is designed so that the probability of a NACK-to-ACK error in transmission is lower than the probability for an ACK-to-NACK error. Multiple ACK/NACK bits are transmitted along with one or more side information bits that indicate the relative quantities of ACK values and NACK values among the ACK/NACK bits. In an exemplary method for generating error control information in a communication device, a plurality of ACK/NACK bits indicating whether corresponding transport blocks were successfully received are generated. One or more side information bits are formed as a function of the ACK/NACK bits, the side information bits indicating the relative quantities of ACK values and NACK values among the ACK/NACK bits, and transmitted along with the ACK/NACK bits to the remote communication node.

Abstract translation: 公开了一种在无线通信系统中生成，发送和处理错误控制信息的方法和装置。 错误控制信息被设计成使得传输中的NACK到ACK错误的概率低于ACK到NACK错误的概率。 多个ACK / NACK比特与一个或多个辅助信息比特一起发送，该比特信息表示ACK / NACK比特中的ACK值和NACK值的相对量。 在用于在通信设备中产生错误控制信息的示例性方法中，生成指示是否已成功接收相应传输块的多个ACK / NACK比特。 作为ACK / NACK位的函数形成一个或多个侧信息位，侧信息位指示ACK / NACK位之间的ACK值和NACK值的相对量，并与ACK / NACK位一起发送到 远程通讯节点。

公开(公告)号：US20100260079A1

公开(公告)日：2010-10-14

申请号：US12746899

申请日：2008-08-21

Applicant: Robert Baldemair ,  David Astely

Inventor： Robert Baldemair ,  David Astely

IPC: H04W72/04 ,  H04J3/00

CPC classification number: H04W74/0833 ,  H04W74/004

Abstract: The invention relates to methods and communication devices in a network comprising the steps of mapping (S2) and allocating a first random access resource to a first frequency in an uplink subframe of a radio frame, and transmitting (S4) an expression on the radio channel expressing mapping of the first random access resource to use in relation to at least one uplink subframe.

Abstract translation: 本发明涉及网络中的方法和通信设备，包括以下步骤：在无线帧的上行链路子帧中映射（S2）和分配第一随机接入资源至第一频率，并且在无线电信道上发送（S4）表达式 表示关于至少一个上行链路子帧使用的第一随机接入资源的映射。