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    Decentralized control of interference reduction in a wireless communication system
    32.
    发明授权
    Decentralized control of interference reduction in a wireless communication system 有权
    无线通信系统中干扰减少的分散控制

    公开(公告)号：US08958319B2

    公开(公告)日：2015-02-17

    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: G01R31/08 ,  H04B7/26

    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）减小后续可变下行链路时间间隔的大小。

    METHOD AND NETWORK NODE FOR DETERMINING CHANNEL STATE INFORMATION IN AN UPCOMING TIME SLOT
    33.
    发明申请
    METHOD AND NETWORK NODE FOR DETERMINING CHANNEL STATE INFORMATION IN AN UPCOMING TIME SLOT 有权
    方法和网络节点用于确定在时间段内的信道状态信息

    公开(公告)号：US20140226508A1

    公开(公告)日：2014-08-14

    申请号：US14009075

    申请日：2011-03-31

    Applicant: Henrik Asplund ,  David Astely ,  Jonas Froberg Olsson ,  Kjell Larsson

    Inventor： Henrik Asplund ,  David Astely ,  Jonas Froberg Olsson ,  Kjell Larsson

    IPC: H04L5/14 ,  H04L12/26

    CPC classification number: H04W72/0446 ,  H04B7/0626 ,  H04J4/00 ,  H04L1/002 ,  H04L1/0026 ,  H04L5/0035 ,  H04L5/1469 ,  H04L43/50 ,  H04W24/10 ,  H04W28/18 ,  H04W48/16 ,  H04W72/00 ,  H04W72/042 ,  H04W72/082 ,  H04W72/085 ,  H04W72/1231

    Abstract: A method and a network node (110, 111) for determining first channel state information in an upcoming time slot for use by a first radio network node (111) when determining a set of radio transmission parameters for a transmission between the first radio network node (111) and a second radio network node (121) are provided. The net work node (110, 111) receives (201) second channel state information for said upcoming time slot. Furthermore, the network node (110, 111) determines (207) third channel state information for said upcoming time slot. The second and third channel state information are at least partly non-overlapping with each other. Next, the network node (110, 111) determines (208) the first channel state information, for said upcoming time slot, based on the second channel state information and the third channel state information.

    Abstract translation: 一种方法和网络节点（110,111），用于当确定用于第一无线电网络节点（111）之间的传输的一组无线电传输参数时，确定即将到来的时隙中的第一无线电网络节点（111）使用的第一信道状态信息 （111）和第二无线电网络节点（121）。 网络工作节点（110,111）接收（201）所述即将到来的时隙的第二信道状态信息。 此外，网络节点（110,111）确定（207）所述即将到来的时隙的第三信道状态信息。 第二和第三信道状态信息至少部分地彼此不重叠。 接下来，网络节点（110,111）基于第二信道状态信息和第三信道状态信息确定（208）针对所述即将到来的时隙的第一信道状态信息。

    Methods and devices for communicating over a radio channel
    34.
    发明授权
    Methods and devices for communicating over a radio channel 有权
    用于通过无线电信道进行通信的方法和装置

    公开(公告)号：US08781484B2

    公开(公告)日：2014-07-15

    申请号：US12742750

    申请日：2008-07-02

    Applicant: Robert Baldemair ,  Richard Abrahamsson ,  David Astely

    Inventor： Robert Baldemair ,  Richard Abrahamsson ,  David Astely

    IPC: H04W72/00

    CPC classification number: H04W74/006 ,  H04L7/041 ,  H04L7/043 ,  H04W72/005 ,  H04W72/042 ,  H04W74/002 ,  H04W74/0833

    Abstract: The invention relates to methods and communication devices for transmitting data on a radio channel comprising the steps of determining a first preamble format to be used in a cell of the second communication device, determining a basic cyclic shift value from a set of basic cyclic shift values, the set is selected based on the preamble format, and transmitting data comprising indication of the determined first preamble format and a basic cyclic shift value pointer indicating the basic cyclic shift value in the set of basic cyclic shift values.

    Abstract translation: 本发明涉及用于在无线电信道上传输数据的方法和通信设备，包括以下步骤：确定要在第二通信设备的小区中使用的第一前同步码格式，从一组基本循环移位值中确定基本循环移位值 基于前导码格式选择该组，并且发送包括所确定的第一前同步码格式的指示的数据和指示基本循环移位值集合中的基本循环移位值的基本循环移位值指针。

    Methods and Nodes for Setting Values of System Parameters Used in a Wireless Communication System
    35.
    发明申请
    Methods and Nodes for Setting Values of System Parameters Used in a Wireless Communication System 有权
    用于设置无线通信系统中使用的系统参数值的方法和节点

    公开(公告)号：US20130258938A1

    公开(公告)日：2013-10-03

    申请号：US13993474

    申请日：2010-12-20

    Applicant: Mats Sågfors ,  David Astely ,  Stefan Parkvall ,  Riikka Susitaival

    Inventor： Mats Sågfors ,  David Astely ,  Stefan Parkvall ,  Riikka Susitaival

    IPC: H04W72/02

    CPC classification number: H04W8/183 ,  H04W28/06 ,  H04W48/12 ,  H04W72/02

    Abstract: 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.

    Abstract translation: 用户设备（120）中的方法，用户设备（120），基站（110）中的方法和用于设置在无线通信系统（100）内使用的系统参数的值的基站（110）。 从基站（110）发送第一组参数值和相关联的第一标签，以由用户设备（120）接收和存储。 此外，从基站（110）发送第二组参数值和相关联的第二标签，以由用户设备（120）接收和存储。 当基站（110）确定改变系统信息参数时，发送命令标签，由用户设备（120）接收，该用户设备应用与对应于所接收的命令标签的标签相关联的一组参数值。

    BEAMFORMING METHOD, APPARATUS FOR POLARIZED ANTENNA ARRAY AND RADIO COMMUNICATION DEVICE AND SYSTEM THEREOF
    36.
    发明申请
    BEAMFORMING METHOD, APPARATUS FOR POLARIZED ANTENNA ARRAY AND RADIO COMMUNICATION DEVICE AND SYSTEM THEREOF 有权
    波束形成方法，用于极化天线阵列和无线电通信装置的装置及其系统

    公开(公告)号：US20130257655A1

    公开(公告)日：2013-10-03

    申请号：US13991990

    申请日：2010-12-17

    Applicant: Yang Hu ,  David Astely ,  Zhiheng Guo ,  Muhammad Imadur Rahman ,  Hai Wang ,  Ruiqi Zhang

    Inventor： Yang Hu ,  David Astely ,  Zhiheng Guo ,  Muhammad Imadur Rahman ,  Hai Wang ,  Ruiqi Zhang

    IPC: H01Q3/40

    CPC classification number: H01Q3/40 ,  H04B7/0408 ,  H04B7/0413 ,  H04B7/0469 ,  H04B7/0617 ,  H04B7/0671 ,  H04B7/0686 ,  H04B7/0691 ,  H04B7/10

    Abstract: The invention discloses a beamforming method for polarized antenna array consisting of a plurality of antenna elements, applied to single layer beamforming or dual layer beamforming, which includes the steps: determining (201) first beamforming weights for phase compensation among the antenna elements within each polarization direction; determining (202) second beamforming weights for phase compensation between equivalent channels of two polarization directions; and calculating (203) hybrid beamforming weights as product of the first beamforming weights and the second beamforming weights. A beamforming apparatus for polarized antenna array is also provided in the invention as well as a radio communication device and a system thereof. With the invention, the single-layer and dual-layer beamforming weights are determined for the cross-polarized antenna array without requiring full channel knowledge or the aid of PMI. Computation complexity is lowered and full power amplifier utilization can be achieved.

    Abstract translation: 本发明公开了一种用于由多个天线元件组成的极化天线阵列的波束成形方法，其应用于单层波束成形或双层波束成形，其包括以下步骤：确定（201）每个极化内的天线元件之间的相位补偿的第一波束成形加权 方向; 确定（202）第二波束形成权重用于两个偏振方向的等效信道之间的相位补偿; 以及计算（203）混合波束形成权重作为所述第一波束成形权重和所述第二波束成形权重的乘积。 在本发明中还提供了一种用于极化天线阵列的波束成形装置以及无线电通信装置及其系统。 利用本发明，对于交叉极化天线阵列确定单层和双层波束成形权重，而不需要全渠道知识或PMI的帮助。 计算复杂度降低，可实现全功率放大器利用。

    Uplink power control in a TDD communication system
    38.
    发明授权
    Uplink power control in a TDD communication system 有权
    TDD通信系统中的上行链路功率控制

    公开(公告)号：US08457062B2

    公开(公告)日：2013-06-04

    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: H04L5/22

    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。

    Method and Arrangement in a Wireless Communication System
    39.
    发明申请
    Method and Arrangement in a Wireless Communication System 有权
    无线通信系统中的方法与布置

    公开(公告)号：US20130039235A1

    公开(公告)日：2013-02-14

    申请号：US13643228

    申请日：2010-05-04

    Applicant: Muhammad Imadur Rahman ,  David Astely ,  Fan Sun

    Inventor： Muhammad Imadur Rahman ,  David Astely ,  Fan Sun

    IPC: H04B7/04 ,  H04W4/00

    CPC classification number: H04B7/0417 ,  H04B7/0465 ,  H04B7/0617 ,  H04B7/0626 ,  H04B7/0639 ,  H04B7/0665

    Abstract: Method and arrangement in a base station for sending data to a user equipment. The base station comprises an instance of a codebook, corresponding to another instance of the codebook comprised in the user equipment. The method comprises obtaining channel state information from a signal received from the user equipment, estimating a channel to be used for transmitting data to the user equipment, calculating a precoder, based on the obtained channel state information. Further is comprised the steps of selecting a precoding index from the codebook based on the calculated precoder, or selecting a precoding index received from the user equipment, precoding data to be transmitted to the user equipment using the calculated precoder and transmitting the precoded data, a non-user dedicated reference signal and the precoding index on the estimated channel to the user equipment. Further, corresponding method and arrangement in a user equipment are described.

    Abstract translation: 用于向用户设备发送数据的基站中的方法和装置。 基站包括对应于用户设备中包含的码本的另一实例的码本的实例。 该方法包括从用户设备接收到的信号中获取信道状态信息，根据所获得的信道状态信息估计用于向用户设备发送数据的信道，计算预编码器。 还包括以下步骤：基于所计算的预编码器从码本中选择预编码索引，或者选择从用户设备接收的预编码索引，使用所计算的预编码器对要发送给用户设备的数据进行预编码，并发送预编码数据; 非用户专用参考信号和估计信道上的用户设备的预编码索引。 此外，描述了用户设备中的相应方法和布置。

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