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    ROUTE DETERMINATION IN A MULTI-HOP NETWORK USING MULTIPLE ROUTING METRICS
    1.
    发明公开
    ROUTE DETERMINATION IN A MULTI-HOP NETWORK USING MULTIPLE ROUTING METRICS 审中-公开
    EINEM多功能网络麻醉机中的ROUTENBESTIMMUNG MEHREREN ROUTING-METRIKEN

    公开(公告)号：EP2923466A1

    公开(公告)日：2015-09-30

    申请号：EP12888807.0

    申请日：2012-11-26

    申请人： Telefonaktiebolaget L M Ericsson (publ)

    发明人： AXNÄS, Johan ,  TULLBERG, Hugo ,  BALDEMAIR, Robert ,  BALACHANDRAN, Kumar ,  HUI, Dennis

    IPC分类号： H04L12/725 ,  H04W40/02

    摘要： The proposed technology provides a computationally efficient way to find suitable routes under consideration of multiple metrics. The considered multi-hop network is represented by a connected graph having nodes and links interconnecting the nodes. The method comprises the step (S1) of obtaining a value of a reference route between a source node and a destination node in the connected graph according a first routing metric. The method further comprises the step (S2) of modifying, based on the value of the reference route according to the first routing metric, the connected graph by modifying link cost, with respect to a second routing metric, of at least one link in the connected graph. The method also comprises the step (S3) of determining at least part of a route between the source node and the destination node in the modified connected graph, based on the modified link cost, according to the second routing metric.

    摘要翻译： 所提出的技术提供了一种计算上有效的方法来在多个度量下考虑合适的路线。 所考虑的多跳网络由具有互连节点的节点和链路的连接图表示。 该方法包括步骤（S1），其根据第一路由度量获得连接的图中的源节点和目的地节点之间的参考路径的值。 该方法还包括步骤（S2），根据第一路由度量，基于参考路径的值修改连接图，通过相对于第二路由度量来修改链路成本 连接图。 该方法还包括根据第二路由度量，基于修改的链路成本来确定修改的连接图中的源节点和目的地节点之间的路由的至少一部分的步骤（S3）。

    METHOD OF DOWNLINK SIGNAL TRANSPORT OVER BACKHAUL COMMUNICATIONS THROUGH DISTRIBUTED PROCESSING
    3.
    发明公开
    METHOD OF DOWNLINK SIGNAL TRANSPORT OVER BACKHAUL COMMUNICATIONS THROUGH DISTRIBUTED PROCESSING 有权
    方法回程通信的分布式处理下行信号运输

    公开(公告)号：EP2684295A1

    公开(公告)日：2014-01-15

    申请号：EP12712156.4

    申请日：2012-03-08

    申请人： Telefonaktiebolaget L M Ericsson (PUBL)

    发明人： HUI, Dennis ,  WONG, Shing-Wa ,  CHENG, Jung-Fu ,  GUEY, Jiann-Ching ,  ZANGI, Kambiz

    IPC分类号： H04B7/02 ,  H04W92/12 ,  H04W92/20

    摘要： The amount of multi-antenna signals to be transmitted over the backhaul in a Coordinated MultiPoint (CoMP) system from the central processor (CP) to each base station is reduced. Embodiments of the present invention exploit characteristics of the underlying signal structure, and distribute some baseband processing functionalities—such as channel coding and the application of the multi-user precoding—from the CP to the remote base stations. Additionally, in some embodiments the non-precoded parts of multi-antenna signals are broadcast from the CP to all base stations in the CoMP system, to further reduce the burden on backhaul communications. In one embodiment, the backhaul network is a Gigabit-capable Passive Optical Network (GPON).

    JOINT DC OFFSET AND CHANNEL ESTIMATION BY USING A LEAST SQUARES (LS) ALGORITHM
    5.
    发明公开
    JOINT DC OFFSET AND CHANNEL ESTIMATION BY USING A LEAST SQUARES (LS) ALGORITHM 有权
    直接电压偏移常见的估值与通道都采用SMALLEST方方法

    公开(公告)号：EP1332592A1

    公开(公告)日：2003-08-06

    申请号：EP01994010.5

    申请日：2001-11-05

    申请人： Telefonaktiebolaget L M Ericsson (Publ)

    发明人： LINDOFF, Bengt ,  HUI, Dennis ,  ZANGI, Kambiz, Casey

    IPC分类号： H04L25/02 ,  H04L25/06 ,  H03L7/087 ,  H03J7/04

    CPC分类号： H04L25/0202 ,  H04L25/062

    摘要： A method and apparatus for offsetting the frequency of a local oscillator (214) in a receiver are disclosed. The local oscillator frequency is offset with an offset frequency that depends on the training sequence used. Training symbols are inputted to the control unit. The control unit (218) then provides an offset frequency depending on the training symbol received (TS). A rotation of the baseband signal, proportional to the offset frequency, is introduced which later is digitally compensated for (240). Upon reception of the signal, a DC offset is introduced in the radio part. The digital compensation transforms this DC offset, in the baseband signal, to a rotating signal. The rotating DC offset signal is then subtracted in the baseband processing (250, 270).

    ENERGY EFFICIENT OPERATION FOR DENSE DEPLOYMENT OF WIRELESS ACCESS NODES
    6.
    发明公开
    ENERGY EFFICIENT OPERATION FOR DENSE DEPLOYMENT OF WIRELESS ACCESS NODES 有权
    能源发电机工程研究所德国柏林EINSATZ VON DRAHTLOSEN ZUGANGSKNOTEN

    公开(公告)号：EP2783536A2

    公开(公告)日：2014-10-01

    申请号：EP12813110.9

    申请日：2012-11-19

    申请人： Telefonaktiebolaget L M Ericsson (publ)

    发明人： HUI, Dennis ,  BALACHANDRAN, Kumar ,  GUEY, Jiann-Ching

    IPC分类号： H04W52/02 ,  H04W88/08 ,  H04W76/04

    CPC分类号： H04W52/0206 ,  H04W76/28 ,  Y02D70/1262 ,  Y02D70/1264 ,  Y02D70/146 ,  Y02D70/164 ,  Y02D70/166 ,  Y02D70/24 ,  Y02D70/25

    摘要： Systems and methods are disclosed for providing energy efficient operation for wireless access nodes in a dense deployment of wireless access nodes in a cellular communication network. In one particular embodiment, wireless access nodes form a super dense network. In one embodiment, a wireless access node in a dense deployment of wireless access nodes in a cellular communication network includes a transmitter and a receiver that are operated according to a discontinuous transmit and a discontinuous receive mode of operation. The wireless access node controls one or more duty cycles for the discontinuous transmit and discontinuous receive mode of operation based on an alertness state of the wireless access node. In one embodiment, the one or more duty cycles increase as the alertness state of the wireless access node increases. In this manner, the wireless access node is operated in an energy efficient manner.

    摘要翻译： 公开了用于在蜂窝通信网络中的无线接入节点的密集部署中的无线接入节点提供能量效率操作的系统和方法。 在一个特定实施例中，无线接入节点形成超密集网络。 在一个实施例中，蜂窝通信网络中无线接入节点的密集部署中的无线接入节点包括根据不连续发射和不连续接收操作模式而操作的发射机和接收机。 无线接入节点基于无线接入节点的警觉状态来控制不连续发射和不连续接收操作模式的一个或多个占空比。 在一个实施例中，随着无线接入节点的警觉状态增加，一个或多个占空比增加。 以这种方式，以能量效率的方式操作无线接入节点。

    SIGNAL COMPRESSION FOR BACKHAUL COMMUNICATIONS USING LINEAR TRANSFORMATIONS
    7.
    发明公开
    SIGNAL COMPRESSION FOR BACKHAUL COMMUNICATIONS USING LINEAR TRANSFORMATIONS 有权
    信号压缩与线性变换回程通信

    公开(公告)号：EP2689539A1

    公开(公告)日：2014-01-29

    申请号：EP12711259.7

    申请日：2012-03-14

    申请人： Telefonaktiebolaget L M Ericsson (PUBL)

    发明人： HUI, Dennis ,  CHENG, Jung-Fu ,  GUEY, Jiann-Ching ,  KHAYRALLAH, Ali, S. ,  WONG, Shing-Wa

    IPC分类号： H04B7/02 ,  H03M7/30

    CPC分类号： H04B7/024 ,  H03M7/3068 ,  H03M7/3082

    摘要： A compression/decompression method for backhaul communication of a complex-valued radio signal between base stations and the network processing unit, such as a Central Processor of a Coordinated MultiPoint (CoMP) system, significantly reduces backhaul bandwidth. The spatial and temporal correlations of the wireless IQ signal are exploited in order to remove redundancy and substantially reduce signal bandwidth. Feature component signals of significance are extracted through linear transformation to form the radio signal, and are individually quantized, possibly at different bit rates in accordance with their relative importance. The transformation can either be pre-determined or computed in real-time based on the spatial and temporal statistics of the radio signal. In the latter case, the transformation matrix or matrices are also sent over the backhaul in order to allow the radio signal to be reconstructed at the receiving end. Different methods of generating the transformation matrices are proposed.

    METHODS AND APPARATUS FOR ROUTING COMMUNICATIONS USING SLOTTED RESOURCES OF RADIO ACCESS MESH NETWORKS
    9.
    发明公开
    METHODS AND APPARATUS FOR ROUTING COMMUNICATIONS USING SLOTTED RESOURCES OF RADIO ACCESS MESH NETWORKS 审中-公开
    方法和设备的通信路由与MESH-无线接入网的开槽资源

    公开(公告)号：EP2929743A1

    公开(公告)日：2015-10-14

    申请号：EP12818653.3

    申请日：2012-12-10

    申请人： Telefonaktiebolaget L M Ericsson (Publ)

    发明人： AXNÄS, Johan ,  HUI, Dennis ,  BALACHANDRAN, Kumar ,  BALDEMAIR, Robert ,  TULLBERG, Hugo

    IPC分类号： H04W72/04 ,  H04W40/02

    CPC分类号： H04W72/0446 ,  H04L45/22 ,  H04W28/26 ,  H04W40/02 ,  H04W40/16 ,  Y02D70/1224 ,  Y02D70/1226 ,  Y02D70/1242 ,  Y02D70/142 ,  Y02D70/146 ,  Y02D70/22 ,  Y02D70/30 ,  Y02D70/34

    摘要： Methods and network nodes (700-720) route communications between pairs of source and destination nodes through network nodes (700-720) of a wireless communication system. One resource slot of a wireless communication link is selected (1200) between each of a sequence of the network nodes (700-720) along a communication route between one pair of the source and destination nodes. Another resource slot of the wireless communication link is selected (1202) between at least some of the sequence of the network nodes (700-720) along the communication route between the one pair of the source and destination nodes. Selection of the other resource slot between each of the sequence of the network nodes along the communication route can be constrained to selection among resource slots that are available from only the sequence of the network nodes along the communication route between the one pair of the source and destination nodes.

    摘要翻译： 每一个序列的方法之间和网络节点（700-720）通过网络节点的无线通信系统的对源和目的地节点（700-720）之间路由通信。无线通信链路的一个资源时隙被选择（1200） 沿着一对源和目的地节点之间的通信路由的网络节点（700-720）。 所述无线通信链路的另一资源时隙被选择（1202）中的至少一些沿着所述一对源和目的地节点之间的通信路由的网络节点（700-720）的序列之间。 每个沿着通信路由的网络节点的序列之间的其它资源时隙的选择可被约束为选择资源时隙中没有可从仅沿着所述一对源极和之间的通信路由的网络节点的序列 目的节点。