公开(公告)号：US08159954B2

公开(公告)日：2012-04-17

申请号：US11792286

申请日：2005-03-08

申请人： Peter Larsson ,  Niklas Johansson ,  Rong Hu ,  Zhang Zhang

发明人： Peter Larsson ,  Niklas Johansson ,  Rong Hu ,  Zhang Zhang

IPC分类号： G06F11/00

CPC分类号： H04W40/06 ,  H04L45/00 ,  H04L45/123 ,  H04W84/18 ,  Y02D70/22 ,  Y02D70/322

摘要： The inventors have envisioned a multihop network scenario in which nodes are equipped with advanced multi-antenna arrangements, and recognized the advantage of exploring the presence of such advanced antenna arrangements in multihop network nodes for the specific purpose of determining link cost for routing in the network. Link cost is determined for a wireless link between a pair of nodes in the network based on multi-channel characteristics between the nodes, where at least one of the nodes is configured for operation with multiple antennas to provide for multiple channels. These multi-channel characteristics may for example be determined based on explicit channel matrix estimation and/or the number of transmit and receive antennas or other information on the antenna capabilities of the involved nodes. The determined link cost information may subsequently be used together with additional routing cost information for route determination, and packet forwarding.

摘要翻译： 本发明人设想了一种多跳网络场景，其中节点配备有先进的多天线布置，并且认识到在多跳网络节点中探索这种高级天线布置的存在的优点，用于确定网络中的路由的链路成本 。 基于节点之间的多信道特性来确定网络中的一对节点之间的无线链路的链路成本，其中至少一个节点被配置为使用多个天线进行操作以提供多个信道。 这些多信道特征可以例如基于显式信道矩阵估计和/或发射和接收天线的数量或涉及节点的天线能力的其他信息来确定。 所确定的链路成本信息随后可以与用于路由确定和分组转发的附加路由成本信息一起使用。

公开(公告)号：US20080232258A1

公开(公告)日：2008-09-25

申请号：US11792286

申请日：2005-03-08

申请人： Peter Larsson ,  Niklas Johansson ,  Rong Hu ,  Zhang Zhang

发明人： Peter Larsson ,  Niklas Johansson ,  Rong Hu ,  Zhang Zhang

IPC分类号： H04L12/28

CPC分类号： H04W40/06 ,  H04L45/00 ,  H04L45/123 ,  H04W84/18 ,  Y02D70/22 ,  Y02D70/322

摘要： The inventors have envisioned a multihop network scenario in which nodes are equipped with advanced multi-antenna arrangements, and recognized the advantage of exploring the presence of such advanced antenna arrangements in multihop network nodes for the specific purpose of determining link cost for routing in the network. A basic idea of the invention is therefore to determine link cost for a wireless link between a pair of nodes in the network based on multi-channel characteristics between the nodes, where at least one of the nodes is configured for operation with multiple antennas to provide for multiple channels. These multi-channel characteristics may for example be determined based on explicit channel matrix estimation and/or the number of transmit and receive antennas or other information on the antenna capabilities of the involved nodes. The determined link cost information may subsequently be used together with additional routing cost information for route determination, and packet forwarding.

摘要翻译： 本发明人设想了一种多跳网络场景，其中节点配备有先进的多天线布置，并且认识到在多跳网络节点中探索这种高级天线布置的存在的优点，用于确定网络中的路由的链路成本 。 因此，本发明的基本思想是基于节点之间的多信道特性来确定网络中的一对节点之间的无线链路的链路成本，其中至少一个节点被配置为用多个天线进行操作以提供 用于多个通道。 这些多信道特征可以例如基于显式信道矩阵估计和/或发射和接收天线的数量或涉及节点的天线能力的其他信息来确定。 所确定的链路成本信息随后可以与用于路由确定和分组转发的附加路由成本信息一起使用。

公开(公告)号：US20110275313A1

公开(公告)日：2011-11-10

申请号：US13143522

申请日：2009-01-19

申请人： Robert Baldemair ,  Päl Frenger ,  Niklas Johansson ,  Peter Larsson

发明人： Robert Baldemair ,  Päl Frenger ,  Niklas Johansson ,  Peter Larsson

IPC分类号： H04W88/04 ,  H04B3/36

CPC分类号： H04B7/2606 ,  H04B7/15542 ,  H04L5/0007 ,  H04L5/0037

摘要： A dynamic frequency translating repeater operating in a mobile communications system is operable to receive a multi-user signal and perform time-varying and user-specific frequency shifting in the repeater signal. The dynamic frequency translating repeater may further perform user subcarrier specific dynamic frequency translation. Different mobile stations may be allocated different frequency shift amounts based on the interference environments, resource allocations, and scheduling constraints particular to each mobile station.

摘要翻译： 在移动通信系统中操作的动态频率转换中继器可操作以接收多用户信号并在中继器信号中执行时变和用户特定的频移。 动态频率转换中继器可以进一步执行用户子载波特定的动态频率转换。 可以基于每个移动台特有的干扰环境，资源分配和调度约束来分配不同的移动站的不同的频移量。

公开(公告)号：US07920501B2

公开(公告)日：2011-04-05

申请号：US11794473

申请日：2005-12-22

申请人： Peter Larsson ,  Niklas Johansson ,  Kai-Erik Sunell

发明人： Peter Larsson ,  Niklas Johansson ,  Kai-Erik Sunell

IPC分类号： H04B7/14

CPC分类号： H04L1/0041 ,  H03M7/30 ,  H04B7/15521 ,  H04B7/15592 ,  H04L2001/0097 ,  H04W16/26

摘要： A relaying node is in bidirectional communication with at least a first and a second sending/receiving radio node, and the relaying radio node receives at least a first signal carrying at least first data and a second signal carrying at least second data. The relaying node generates a reduced representation of at least the first and second signal, with a reduced information content as compared to the first and second data, by a joint non-linearly encoding operation, and transmits the reduced representation to at least the first and the second communication node. The first and second sending/receiving node can extract data from the reduced representation by a non-linear decoding operation using stored a priori information.

摘要翻译： 中继节点与至少第一和第二发送/接收无线电节点双向通信，并且中继无线电节点至少接收携带至少第一数据的第一信号和至少携带第二数据的第二信号。 通过联合非线性编码操作，中继节点通过联合非线性编码操作产生具有与第一和第二数据相比减少的信息内容的至少第一和第二信号的缩小表示，并将缩减表示发送到至少第一和第二信号 第二通信节点。 第一和第二发送/接收节点可以使用存储的先验信息通过非线性解码操作从缩小表示中提取数据。

公开(公告)号：US07464166B2

公开(公告)日：2008-12-09

申请号：US10729835

申请日：2003-12-08

申请人： Peter Larsson ,  Niklas Johansson

发明人： Peter Larsson ,  Niklas Johansson

IPC分类号： G06F15/16

CPC分类号： H04L45/00 ,  H04B7/2606 ,  H04L47/10 ,  H04L47/14 ,  H04L47/15 ,  H04L47/17 ,  H04L47/41

摘要： A basic idea is to employ multi-user detection (MUD) at the receiver side in a multi-hop network to concurrently decode multiple packets transmitted from multiple nodes (T1, T2), and prioritize among the correctly decoded packets to select one or more packets suitable for forwarding, and finally reply with a packet acknowledgement (ACK) to the corresponding transmitting node for each selected packet. In this way, the design choice of MUD is exploited in the forwarding procedure. It is furthermore beneficial to exploit also the diversity enabled by the existence of multiple relay nodes (R1, R2, R3). A transmitting node that transmits its data packet signal to multiple relay candidate nodes and then receives packet acknowledgements from at least two relay candidate nodes preferably performs a prioritization to select a suitable relay node. The transmitting node then transmits a forwarding order (FO) to the selected relay node, which takes on responsibility for forwarding the information to the next node.

摘要翻译： 一个基本思想是在多跳网络中的接收机侧采用多用户检测（MUD）来同时解码从多个节点（T1，T2）发送的多个分组，并且在正确解码的分组中优先选择一个或多个 适用于转发的分组，并且最后用每个所选分组的对应发送节点的分组确认（ACK）进行答复。 以这种方式，在转发过程中利用了MUD的设计选择。 此外，还有利于利用多个中继节点（R1，R2，R3）的存在实现的分集。 将其数据分组信号发送到多个中继候选节点，然后从至少两个中继候选节点接收分组确认的发送节点优选地执行优先级选择合适的中继节点。 然后，发送节点向所选择的中继节点发送转发顺序（FO），该中继节点负责将信息转发到下一个节点。

公开(公告)号：US08750789B2

公开(公告)日：2014-06-10

申请号：US13143522

申请日：2009-01-19

申请人： Robert Baldemair ,  Päl Frenger ,  Niklas Johansson ,  Peter Larsson

发明人： Robert Baldemair ,  Päl Frenger ,  Niklas Johansson ,  Peter Larsson

IPC分类号： H04W88/04 ,  H04B7/15

CPC分类号： H04B7/2606 ,  H04B7/15542 ,  H04L5/0007 ,  H04L5/0037

摘要： A dynamic frequency translating repeater operating in a mobile communications system is operable to receive a multi-user signal and perform time-varying and user-specific frequency shifting in the repeater signal. The dynamic frequency translating repeater may further perform user subcarrier specific dynamic frequency translation. Different mobile stations may be allocated different frequency shift amounts based on the interference environments, resource allocations, and scheduling constraints particular to each mobile station.

摘要翻译： 在移动通信系统中操作的动态频率转换中继器可操作以接收多用户信号并在中继器信号中执行时变和用户特定的频移。 动态频率转换中继器可以进一步执行用户子载波特定的动态频率转换。 可以基于每个移动台特有的干扰环境，资源分配和调度约束来分配不同的移动站的不同的频移量。

公开(公告)号：US08750786B2

公开(公告)日：2014-06-10

申请号：US12808511

申请日：2007-12-21

申请人： Peter Larsson ,  Niklas Johansson

发明人： Peter Larsson ,  Niklas Johansson

IPC分类号： H04B3/36 ,  H04B7/14

CPC分类号： H04B7/15535 ,  H04W16/02 ,  H04W16/26

摘要： The invention relates to a relay or repeater node (21) for use in a wireless communications system said node comprising a receive antenna (23) for receiving a signal through a wireless connection, an amplifier (30) for amplifying the signal and a transmit antenna (27) for forwarding the amplified signal, said node further comprising a mode switching unit (31) for switching between at least a first and a second mode of operation of the node in dependence of an amplification gain requirement. This enables optimization of the node for varying conditions in the network.

摘要翻译： 本发明涉及一种在无线通信系统中使用的中继器或中继器节点（21），所述节点包括用于通过无线连接接收信号的接收天线（23），用于放大信号的放大器（30）和发射天线 （27），用于转发放大的信号，所述节点还包括用于根据放大增益要求在节点的至少第一和第二操作模式之间切换的模式切换单元（31）。 这使得能够优化网络中不同条件的节点。

公开(公告)号：US20090231989A1

公开(公告)日：2009-09-17

申请号：US12306550

申请日：2006-07-12

申请人： Peter Larsson ,  Niklas Johansson

发明人： Peter Larsson ,  Niklas Johansson

IPC分类号： H04J3/10 ,  H04B7/00

CPC分类号： H04L5/0062 ,  H04B17/345 ,  H04J11/0053 ,  H04L5/0035 ,  H04W88/08

摘要： A method and apparatus for reducing interference caused by an interfering signal are disclosed for use in an access node, such as a base station, communicating with at least one mobile terminal in a wireless network, the method comprising the following steps: receiving information related to at least one data packet that is to be transmitted by a second access node to at least a second mobile terminal, receiving time-frequency information about the point in time when the at least one data packet will be transmitted from the second access node to the second mobile terminal, estimating the interfering signal based on the at least one data packet, cancelling interference based on the estimated interference signal at the point in time. This facilitates interference cancellation, especially in a network using distributed RRM.

摘要翻译： 公开了一种用于减少由干扰信号引起的干扰的方法和装置，用于与无线网络中的至少一个移动终端进行通信的接入节点（例如基站）中，该方法包括以下步骤：接收与 将要由第二接入节点发送到至少第二移动终端的至少一个数据分组，接收关于当所述至少一个数据分组将从第二接入节点发送到所述时间点的时间点的时间 - 频率信息 第二移动终端，基于所述至少一个数据分组估计所述干扰信号，基于所述估计的干扰信号在所述时间点消除干扰。 这有助于干扰消除，特别是在使用分布式RRM的网络中。

公开(公告)号：US20060229017A1

公开(公告)日：2006-10-12

申请号：US10549908

申请日：2004-04-26

申请人： Peter Larsson ,  Niklas Johansson

发明人： Peter Larsson ,  Niklas Johansson

IPC分类号： H04B1/00

CPC分类号： H04L27/2647 ,  H04B1/1027 ,  H04B1/7107 ,  H04B1/715 ,  H04B7/15592 ,  H04B7/2606 ,  H04W16/14 ,  H04W28/14 ,  H04W88/04

摘要： In accordance with the invention, signal information representative of a first set of information to be transmitted more than one time over at least one link is stored as a priori known signal information. This could be previously received and/or, detected information, own transmitted information or otherwise available relevant signal information in the node. Signal information representative of a second set of information is received, wherein a transmission of the first set of information interferes with the reception of the second set of information. In spite of the interference, at least part of the second set of information can still be successfully be detected by exploiting the received signal information and at least part of the previously stored a priori known signal information. The information is detected by interference cancellation based on the received signal information and relevant parts of the a priori known information. The set of priori known signal information is preferably updated by continuously storing newly detected information.

摘要翻译： 根据本发明，表示要在多于一个链路上多于一次发送的第一组信息的信号信息被存储为先验已知信号信息。 这可以先前接收和/或检测到的信息，在节点中拥有所发送的信息或其他可用的相关信号信息。 接收表示第二组信息的信号信息，其中第一组信息的传输干扰第二组信息的接收。 尽管存在干扰，但是仍然可以通过利用接收到的信号信息和先前存储的先验已知信号信息的至少一部分来成功地检测到第二组信息中的至少一部分。 基于接收的信号信息和先验已知信息的相关部分，通过干扰消除来检测信息。 先前已知信号信息的集合优选地通过连续地存储新检测到的信息来更新。

公开(公告)号：US08699942B2

公开(公告)日：2014-04-15

申请号：US13129778

申请日：2008-11-18

申请人： Pål Frenger ,  Niklas Johansson ,  Peter Larsson

发明人： Pål Frenger ,  Niklas Johansson ,  Peter Larsson

IPC分类号： H04B3/36 ,  H04B1/60 ,  H04B7/15

CPC分类号： H04B7/155 ,  H04W52/46

摘要： A method and arrangement in a first node (101) for determining radio characteristics of a radio link between a first repeater (103, 203) and at least one second repeater (104, 204) are provided. The first node sends a first message, to the first repeater (103, 203), instructing the first repeater (103, 203) to send a radio signal being measureable by the second repeater (104, 204). Furthermore, the first node sends a second message, to said at least one second repeater, instructing said at least one second repeater (104, 204) to measure on the radio signal. The first node receives measurement data of the radio signal, measured by said at least one second repeater (104, 204). The first node (101) determines radio characteristics of the radio link between the first repeater (103, 203) and said at least one second repeater based on the measurement data. Methods and arrangements in a first and second repeater and a method and arrangement in a second node for contributing to radio characteristics determination are provided.

摘要翻译： 提供了用于确定第一中继器（103,203）和至少一个第二中继器（104,204）之间的无线电链路的无线电特性的第一节点（101）中的方法和装置。 第一节点向第一中继器（103,203）发送第一消息，指示第一中继器（103,203）发送可由第二中继器（104,204）测量的无线电信号。 此外，第一节点向所述至少一个第二中继器发送第二消息，指示所述至少一个第二中继器（104,204）在无线电信号上进行测量。 第一节点接收由所述至少一个第二中继器（104,204）测量的无线电信号的测量数据。 第一节点（101）基于测量数据确定第一中继器（103,203）和所述至少一个第二中继器之间的无线电链路的无线电特性。 提供了第一和第二中继器中的方法和布置以及用于有助于无线电特性确定的第二节点中的方法和装置。